10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number

1-10524 (UDR, Inc.)

333-156002-01 (United Dominion Realty, L.P.)

UDR, Inc.

United Dominion Realty, L.P.

(Exact name of registrant as specified in its charter)

Maryland (UDR, Inc.)	54-0857512
Delaware (United Dominion Realty, L.P.)	54-1776887
(State or other jurisdiction of	(I.R.S. Employer
incorporation of organization)	Identification No.)

1745 Shea Center Drive, Suite 200, Highlands Ranch, Colorado 80129

(Address of principal executive offices) (zip code)

(720) 283-6120

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

UDR, Inc.	Yes x No o
United Dominion Realty, L.P.	Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

UDR, Inc.	Yes x No o
United Dominion Realty, L.P.	Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

UDR, Inc.:
Large accelerated filer x	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

United Dominion Realty, L.P.:
Large accelerated filer o	Accelerated filer o	Non-accelerated filer x	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

UDR, Inc.	Yes o No x
United Dominion Realty, L.P.	Yes o No x

The number of shares of UDR, Inc.’s common stock, $0.01 par value, outstanding as of April 27, 2015 was 258,985,923.

UDR, INC.

UNITED DOMINION REALTY, L.P.

INDEX
	PAGE
PART I — FINANCIAL INFORMATION
Item 1. Consolidated Financial Statements
UDR, INC.:
Consolidated Balance Sheets as of March 31, 2015 (unaudited) and December 31, 2014 (audited)	4
Consolidated Statements of Operations for the three months ended March 31, 2015 and 2014 (unaudited)	5
Consolidated Statements of Comprehensive Income/(Loss) for the three months ended March 31, 2015 and 2014 (unaudited)	6
Consolidated Statement of Changes in Equity for the three months ended March 31, 2015 (unaudited)	7
Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014 (unaudited)	8
Notes to Consolidated Financial Statements (unaudited)	9
UNITED DOMINION REALTY, L.P.:
Consolidated Balance Sheets as of March 31 2015 (unaudited) and December 31, 2014 (audited)	34
Consolidated Statements of Operations for the three months ended March 31 2015 and 2014 (unaudited)	35
Consolidated Statements of Comprehensive Income/(Loss) for the three months ended March 31 2015 and 2014 (unaudited)	36
Consolidated Statement of Changes in Capital for the three months ended March 31 2015 (unaudited)	37
Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014 (unaudited)	38
Notes to Consolidated Financial Statements (unaudited)	39
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	54
Item 3. Quantitative and Qualitative Disclosures About Market Risk	77
Item 4. Controls and Procedures	77
PART II — OTHER INFORMATION
Item 1. Legal Proceedings	78
Item 1A. Risk Factors	78
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	90
Item 3. Defaults Upon Senior Securities	91
Item 4. Mine Safety Disclosures	91
Item 5. Other Information	91
Item 6. Exhibits	91
Signatures	92
Exhibit 12.1
Exhibit 12.2
Exhibit 31.1
Exhibit 31.2
Exhibit 31.3
Exhibit 31.4
Exhibit 32.1
Exhibit 32.2
Exhibit 32.3
Exhibit 32.4

EXPLANATORY NOTE

This Report combines the quarterly reports on Form 10-Q for the quarter ended March 31, 2015 of UDR, Inc., a Maryland corporation, and United Dominion Realty, L.P., a Delaware limited partnership, of which UDR, Inc. is the parent company and sole general partner. Unless the context otherwise requires, all references in this Report to “we,” “us,” “our,” the “Company”, “UDR” or “UDR, Inc.” refer collectively to UDR, Inc., together with its consolidated subsidiaries and joint ventures, including the Operating Partnership. Unless the context otherwise requires, the references in this Report to the “Operating Partnership” or the “OP” refer to United Dominion Realty, L.P. together with its consolidated subsidiaries. “Common stock” refers to the common stock of UDR and “stockholders” means the holders of shares of UDR’s common stock and preferred stock. The limited partnership interests of the Operating Partnership are referred to as the “OP Units” and the holders of the OP Units are referred to as “unitholders.” This combined Form 10-Q is being filed separately by UDR and the Operating Partnership.

There are a number of differences between our Company and our Operating Partnership, which are reflected in our disclosure in this Report. UDR is a real estate investment trust (a “REIT”), whose most significant asset is its ownership interest in the Operating Partnership. UDR also conducts business through other subsidiaries, including its taxable REIT subsidiary (“TRS”), whose activities include development of land and land entitlement. UDR acts as the sole general partner of the Operating Partnership, holds interests in subsidiaries and joint ventures, owns and operates properties, issues securities from time to time and guarantees debt of certain of our subsidiaries. The Operating Partnership conducts the operations of a substantial portion of the business and is structured as a partnership with no publicly traded equity securities. The Operating Partnership has guaranteed certain outstanding debt of UDR.

As of March 31, 2015, UDR owned 110,883 units (100%) of the general partnership interests of the Operating Partnership and 174,002,876 units (approximately 95.0%) of the limited partnership interests of the Operating Partnership. UDR conducts a substantial amount of its business and holds a substantial amount of its assets through the Operating Partnership, and, by virtue of its ownership of the OP Units and being the Operating Partnership’s sole general partner, UDR has the ability to control all of the day-to-day operations of the Operating Partnership. Separate financial statements and accompanying notes, as well as separate discussions under “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” are provided for each of UDR and the Operating Partnership.

UDR, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

	March 31, 2015			December 31, 2014
	(unaudited)			(audited)
ASSETS
Real estate owned:
Real estate held for investment	$	8,256,995		$	8,205,627
Less: accumulated depreciation	(2,521,958		)	(2,434,772		)
Real estate held for investment, net	5,735,037			5,770,855
Real estate under development (net of accumulated depreciation of $142 and $0, respectively)	196,511			177,632
Total real estate owned, net of accumulated depreciation	5,931,548			5,948,487
Cash and cash equivalents	6,274			15,224
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Investment in and advances to unconsolidated joint ventures, net	763,540			718,226
Other assets	96,713			105,202
Total assets	$	6,858,511		$	6,846,534
LIABILITIES AND EQUITY
Liabilities:
Secured debt	$	1,370,673		$	1,361,529
Unsecured debt	2,145,996			2,221,576
Real estate taxes payable	21,848			15,978
Accrued interest payable	23,460			34,215
Security deposits and prepaid rent	34,624			34,064
Distributions payable	75,129			69,460
Accounts payable, accrued expenses, and other liabilities	63,857			91,282
Total liabilities	3,735,587			3,828,104
Commitments and contingencies (Note 12)
Redeemable noncontrolling interests in the Operating Partnership	311,883			282,480
Equity:
Preferred stock, no par value; 50,000,000 shares authorized:
8.00% Series E Cumulative Convertible; 2,803,812 shares issued and outstanding at March 31, 2015 and December 31, 2014	46,571			46,571
Common stock, $0.01 par value; 350,000,000 shares authorized:
258,988,739 and 255,114,603 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	2,590			2,551
Additional paid-in capital	4,334,418			4,223,747
Distributions in excess of net income	(1,557,953		)	(1,528,917		)
Accumulated other comprehensive income/(loss), net	(15,445		)	(8,855		)
Total stockholders’ equity	2,810,181			2,735,097
Noncontrolling interests	860			853
Total equity	2,811,041			2,735,950
Total liabilities and equity	$	6,858,511		$	6,846,534

See accompanying notes to consolidated financial statements.

4

UDR, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
REVENUES:
Rental income	$	207,047		$	194,352
Joint venture management and other fees	12,706			3,687
Total revenues	219,753			198,039
OPERATING EXPENSES:
Property operating and maintenance	37,250			36,720
Real estate taxes and insurance	26,222			25,431
Property management	5,694			5,345
Other operating expenses	1,766			1,926
Real estate depreciation and amortization	88,777			88,533
General and administrative	12,152			11,994
Casualty-related (recoveries)/charges, net	996			500
Other depreciation and amortization	1,623			1,080
Total operating expenses	174,480			171,529
Operating income	45,273			26,510
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Income/(loss) before income taxes, discontinued operations, and gain/(loss) on sale of real estate owned	75,992			(8,524		)
Tax benefit/(expense), net	425			3,329
Income/(loss) from continuing operations	76,417			(5,195		)
Income/(loss) from discontinued operations, net of tax	—			(87		)
Income/(loss) before gain/(loss) on sale of real estate owned	76,417			(5,282		)
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net income/(loss)	76,417			19,012
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	73,822			18,361
Distributions to preferred stockholders — Series E (Convertible)	(931		)	(931		)
Net income/(loss) attributable to common stockholders	$	72,891		$	17,430
Income/(loss) per weighted average common share — basic:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07
Income/(loss) per weighted average common share — diluted:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07
Common distributions declared per share	$	0.2775		$	0.2600
Weighted average number of common shares outstanding — basic	256,834			250,177
Weighted average number of common shares outstanding — diluted	258,662			251,822

See accompanying notes to consolidated financial statements.

5

UDR, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS)

(In thousands)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
Net income/(loss)	$	76,417		$	19,012
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Other comprehensive income/(loss) - derivative instruments:
Unrealized holding gain/(loss)	(7,552		)	(55		)
(Gain)/loss reclassified into earnings from other comprehensive income/(loss)	737			1,532
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	(6,815		)	1,477
Comprehensive income/(loss)	69,602			20,489
Comprehensive (income)/loss attributable to noncontrolling interests	(2,371		)	(707		)
Comprehensive income/(loss) attributable to UDR, Inc.	$	67,231		$	19,782

See accompanying notes to consolidated financial statements.

6

UDR, INC.

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY

(In thousands, except share and per share data)

(Unaudited)

	Preferred Stock			Common Stock			Paid-in Capital		Distributions in Excess of Net Income			Accumulated Other Comprehensive Income/(Loss), net			Noncontrolling Interests		Total
	Shares	Amount		Shares	Amount
Balance at December 31, 2014	2,803,812	$	46,571	255,114,603	$	2,551	$	4,223,747	$	(1,528,917	)	$	(8,855	)	$	853	$	2,735,950
Net income/(loss) attributable to UDR, Inc.	—	—		—	—		—		73,822			—			—		73,822
Net income/(loss) attributable to noncontrolling interests	—	—		—	—		—		—			—			7		7
Other comprehensive income/(loss)	—	—		—	—		—		—			(6,590		)	—		(6,590		)
Issuance/(forfeiture) of common and restricted shares, net	—	—		433,966	4		1,899		—			—			—		1,903
Issuance of common shares through public offering	—	—		3,439,636	34		108,756		—			—			—		108,790
Adjustment for conversion of noncontrolling interest of unitholders in the Operating Partnership	—	—		534	1		16		—			—			—		17
Common stock distributions declared ($0.2775 per share)	—	—		—	—		—		(72,231		)	—			—		(72,231		)
Preferred stock distributions declared-Series E ($0.3322 per share)	—	—		—	—		—		(931		)	—			—		(931		)
Adjustment to reflect redemption value of redeemable noncontrolling interests	—	—		—	—		—		(29,696		)	—			—		(29,696		)
Balance at March 31, 2015	2,803,812	$	46,571	258,988,739	$	2,590	$	4,334,418	$	(1,557,953	)	$	(15,445	)	$	860	$	2,811,041

See accompanying notes to consolidated financial statements.

7

UDR, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands, except for share data)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
Operating Activities
Net income/(loss)	$	76,417		$	19,012
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:
Depreciation and amortization	90,400			89,613
(Gain)/loss on sale of real estate owned, net of tax	—			(24,294		)
Tax (benefit)/provision, net	(425		)	(3,329		)
(Income)/loss from unconsolidated entities	(59,159		)	3,565
Casualty-related (recoveries)/charges, net	996			500
Other	6,324			6,697
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	4,794			8,422
Increase/(decrease) in operating liabilities	(23,329		)	(17,665		)
Net cash provided by/(used in) operating activities	96,018			82,521
Investing Activities
Acquisition of real estate assets	—			(77,793		)
Proceeds from sale of real estate investments, net	—			47,922
Development of real estate assets	(43,563		)	(56,147		)
Capital expenditures and other major improvements — real estate assets, net of escrow reimbursement	(20,431		)	(30,226		)
Capital expenditures — non-real estate assets	(437		)	(1,115		)
Investment in unconsolidated joint ventures	(25,463		)	(21,476		)
Distributions received from unconsolidated joint ventures	41,481			7,661
Purchase deposits on pending acquisitions	—			(4,000		)
(Issuance)/repayment of notes receivable	(1,125		)	(1,535		)
Net cash provided by/(used in) investing activities	(49,538		)	(136,709		)
Financing Activities
Payments on secured debt	(2,266		)	(2,486		)
Proceeds from the issuance of secured debt	—			4,553
Payments on unsecured debt	(325,211		)	(184,000		)
Net proceeds/(repayment) of revolving bank debt	236,500			287,500
Proceeds from the issuance of common shares through public offering, net	108,790			—
Distributions paid to redeemable noncontrolling interests	(2,509		)	(2,360		)
Distributions paid to preferred stockholders	(931		)	(931		)
Distributions paid to common stockholders	(66,692		)	(58,952		)
Other	(3,111		)	(3,494		)
Net cash provided by/(used in) financing activities	(55,430		)	39,830
Net increase/(decrease) in cash and cash equivalents	(8,950		)	(14,358		)
Cash and cash equivalents, beginning of period	15,224			30,249
Cash and cash equivalents, end of period	6,274			15,891
	Three Months Ended
	March 31,
	2015			2014
Supplemental Information:
Interest paid during the period, net of amounts capitalized	$	40,282		$	38,180
Non-cash transactions:
Acquisition of real estate	$	24,067		$	—
Fair value adjustment of debt acquired as part of acquisition of real estate	$	1,363		$	—

See accompanying notes to consolidated financial statements.

8

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 2015

1. CONSOLIDATION AND BASIS OF PRESENTATION

Consolidation and Basis of Presentation

UDR, Inc., collectively with our consolidated subsidiaries (“UDR,” the “Company,” “we,” “our,” or “us”), is a self-administered real estate investment trust, or REIT, that owns, operates, acquires, renovates, develops, redevelops, and manages apartment communities. The accompanying consolidated financial statements include the accounts of UDR and its subsidiaries, including United Dominion Realty, L.P. (the “Operating Partnership” or the “OP”). As of March 31, 2015, there were 183,278,698 units in the Operating Partnership outstanding, of which 174,113,759 units, or 95.0%, were owned by UDR and 9,164,939 units, or 5.0%, were owned by limited partners. The consolidated financial statements of UDR include the noncontrolling interests of the unitholders in the Operating Partnership.

The accompanying interim unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of our financial position as of March 31, 2015, and results of operations for the three months endedMarch 31, 2015 and 2014 have been included. Such adjustments are normal and recurring in nature. The interim results presented are not necessarily indicative of results that can be expected for a full year. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2014 appearing in UDR’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 24, 2015.

The accompanying interim unaudited consolidated financial statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the interim unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company evaluated subsequent events through the date its financial statements were issued. No significant recognized or non-recognized subsequent events were noted.

2. SIGNIFICANT ACCOUNTING POLICIES

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Company on January 1, 2017; early adoption is not permitted. The Company has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

9

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Company recognizes interest income, management and other fees and incentives when earned, and the amounts are fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we retain. The Company recognizes any deferred gain when the property is sold to a third party. In transactions accounted for by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Notes Receivable

The following table summarizes our notes receivable, net as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Interest rate at		Balance outstanding
	March 31, 2015		March 31, 2015		December 31, 2014
Note due February 2017 (a)	10.00	%	$	12,994	$	11,869
Note due July 2017 (b)	8.00	%	2,500		2,500
Total notes receivable, net			$	15,494	$	14,369

(a) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $13.0 million. During the three months ended March 31, 2015, the Company loaned an additional $1.1 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (February 2017).

(b) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $2.5 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (July 2017).

The Company recognized $0.4 million and $1.2 million of interest income from notes receivable during the three months endedMarch 31, 2015 and 2014, respectively, none of which was related party interest income. Interest income is included in Interest and other income/(expense), net on the Consolidated Statements of Operations.

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to stockholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Company’s other comprehensive

10

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges, (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) into earnings, and the allocation of other comprehensive income/(loss) to redeemable noncontrolling interests. The (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 10, Derivatives and Hedging Activity, for further discussion. The allocation of other comprehensive income/(loss) to redeemable noncontrolling interests was $(225,000) and $56,000 during the three months endedMarch 31, 2015 and 2014, respectively.

Income Taxes

Due to the structure of the Company as a REIT and the nature of the operations for the operating properties, no provision for federal income taxes has been provided for at UDR. Historically, the Company has generally incurred only state and local excise and franchise taxes. UDR has elected for certain consolidated subsidiaries to be treated as taxable REIT subsidiaries (“TRS”), primarily those engaged in development activities.

Income taxes for our TRS are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. The Company’s deferred tax assets are generally the result of differing depreciable lives on capitalized assets and timing of expense recognition for certain accrued liabilities. As of March 31, 2015, UDR’s net deferred tax asset was $7.6 million (net of a valuation allowance of less than $0.1 million), which is included in Other assets on the Consolidated Balance Sheets.

GAAP defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. GAAP also provides guidance on derecognition, classification, interest and penalties, accounting for interim periods, disclosure and transition.

The Company recognizes its tax positions and evaluates them using a two-step process. First, UDR determines whether a tax position is more likely than not (greater than 50 percent probability) to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Second, the Company will determine the amount of benefit to recognize and record the amount that is more likely than not to be realized upon ultimate settlement.

UDR had no material unrecognized tax benefit, accrued interest or penalties at March 31, 2015. UDR and its subsidiaries are subject to federal income tax as well as income tax of various state and local jurisdictions. The tax years 2010 through 2013 remain open to examination by tax jurisdictions to which we are subject. When applicable, UDR recognizes interest and/or penalties related to uncertain tax positions in Tax benefit/(expense), net on the Consolidated Statements of Operations.

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MARCH 31, 2015

3. REAL ESTATE OWNED

Real estate assets owned by the Company consist of income producing operating properties, properties under development, land held for future development, and sold or held for disposition properties. As of March 31, 2015, the Company owned and consolidated 138 communities in 10 states plus the District of Columbia totaling 39,956 apartment homes. The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land and land improvements	$	1,984,019		$	1,980,221
Depreciable property — held and used:
Building, improvements, and furniture, fixtures and equipment	6,272,976			6,225,406
Under development:
Land and land improvements	24,584			24,584
Building, improvements, and furniture, fixtures and equipment	172,069			153,048
Real estate owned	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Real estate owned, net	$	5,931,548		$	5,948,487

In February 2015, the Company acquired an office building in Highlands Ranch, Colorado, for total consideration of approximately $24.0 million, which was comprised of assumed debt. The Company's corporate offices, as well as other leased office space, are located in the acquired building. The building consists of approximately 120,000 square feet, of which UDR occupies approximately 44,000 square feet. All existing leases were assumed by the Company at the time of acquisition.

During the three months endedMarch 31, 2015, the Company did not sell or have any properties classified as held for sale.

Predevelopment, development, and redevelopment projects and related costs are capitalized and reported on the Consolidated Balance Sheets as Total real estate owned, net of accumulated depreciation. The Company capitalizes costs directly related to the predevelopment, development, and redevelopment of a capital project, which include, but are not limited to, interest, real estate taxes, insurance, and allocated development and redevelopment overhead related to support costs for personnel working on the capital projects. We use our professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. These costs, excluding the direct costs of development and redevelopment and capitalized interest, were $2.2 million and $3.4 million for the three months endedMarch 31, 2015 and 2014, respectively. Total interest capitalized was $4.8 million and $5.3 million for the three months endedMarch 31, 2015 and 2014, respectively. As each home in a capital project is completed and becomes available for lease-up, the Company ceases capitalization on the related portion and depreciation commences over the estimated useful life.

During the three months endedMarch 31, 2015, the Company recorded a loss of of $996,000 related to damage caused by severe snow storms to properties located on the east coast, which is included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.

4. DISCONTINUED OPERATIONS

Effective January 1, 2014, UDR prospectively adopted ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, for all communities not previously sold or classified as held for sale. The standard had a material impact on the Company’s consolidated financial statements. As a result of adopting the ASU, during the three months endedMarch 31, 2014, gains (net of tax) of $23.3 million from disposition of real estate, excluding a $1.1 million gain related to the sale of land, are included in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Statements of Operations rather than in Income/(loss) from discontinued operations, net of tax on the Consolidated Statements of Operations.

As of March 31, 2014, the Company held one operating property that was classified as held for disposition prior to the adoption of ASU 2014-08 and, therefore, met the requirements to be reported as a discontinued operation. The operating results of the property for the three months endedMarch 31, 2014 are included in Income/(loss) from discontinued operations, net of tax on the Consolidated Statements of Operations. The property was subsequently sold during the third quarter of 2014.

The following is a summary of income/(loss) from discontinued operations, net of tax for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Rental income	$	—	$	48
Rental expenses	—		125
Property management	—		1
Interest and other (income)/expense, net	—		9
Income/(loss) from discontinued operations, net of tax	$	—	$	(87	)
Income/(loss) from discontinued operations attributable to UDR, Inc.	$	—	$	(84	)

5. JOINT VENTURES AND PARTNERSHIPS

UDR has entered into joint ventures and partnerships with unrelated third parties to acquire real estate assets that are either consolidated and included in Real estate owned on the Consolidated Balance Sheets or are accounted for under the equity method of accounting, and are included in Investment in and advances to unconsolidated joint ventures, net on the Consolidated Balance Sheets. The Company consolidates the entities that we control as well as any variable interest entity where we are the primary beneficiary. In addition, the Company consolidates any joint venture or partnership in which we are the general partner or managing member and the third party does not have the ability to substantively participate in the decision-making process nor the ability to remove us as general partner or managing member without cause.

UDR’s joint ventures and partnerships are funded with a combination of debt and equity. Our losses are limited to our investment and except as noted below, the Company does not guarantee any debt, capital payout or other obligations associated with our joint ventures and partnerships.

Unconsolidated Joint Ventures and Partnerships

The Company recognizes earnings or losses from our investments in unconsolidated joint ventures and partnerships consisting of our proportionate share of the net earnings or losses of the joint ventures and partnerships. In addition, we may earn fees for providing management services to the unconsolidated joint ventures and partnerships.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The following table summarizes the Company’s investment in and advances to unconsolidated joint ventures and partnerships, net, which are accounted for under the equity method of accounting as of March 31, 2015 and December 31, 2014(dollars in thousands):

Joint Venture	Location of Properties	Number of Properties	Number of Apartment Homes	Investment at					UDR’s Ownership Interest
		March 31, 2015	March 31, 2015	March 31, 2015		December 31, 2014			March 31, 2015			December 31, 2014
Operating and development:
UDR/MetLife I	Various	4 land parcels	—	$	13,473	$	13,306		15.7		%	15.7		%
UDR/MetLife II	Various	21 operating communities	4,642	429,635		431,277			50.0		%	50.0		%
Other UDR/MetLife Development Joint Ventures		1 operating community;
		4 development communities (a);
	Various	1 land parcels	1,437	145,681		134,939			50.6		%	50.6		%
UDR/MetLife Vitruvian Park®	Addison, TX	3 operating communities
		6 land parcels	1,130	78,669		80,302			50.0		%	50.0		%
UDR/KFH	Washington, D.C.	3 operating communities	660	20,435		21,596			30.0		%	30.0		%
Texas (b)	Texas	—	—	—		(25,901		)	—		%	20.0		%
Investment in and advances to unconsolidated joint ventures, net, before participating loan investment				687,893		655,519
	Location	Interest Rate	Years To Maturity	Investment at					Income From Participating Loan Investment for the Three Months Ended March 31,
				March 31, 2015		December 31, 2014			2015			2014
Participating loan investment:
Steele Creek	Denver, CO	6.5%	2.3	75,647		62,707			$	1,154		$	321
Total investment in and advances to unconsolidated joint ventures, net				$	763,540	$	718,226

(a) The number of apartment homes for the communities under development presented in the table above is based on the projected number of total homes. As of March 31, 2015, no apartment homes had been completed in Other UDR/MetLife Development Joint Ventures.

(b) In January 2015, the eight communities held by the Texas joint venture were sold, generating net proceeds to UDR of $43.5 million. The Company recorded promote and disposition fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale.

Subsequent to quarter end, the Company entered into a joint venture agreement with real estate private equity firm, The Wolff Company (“Wolff”), to invest $136 million for a 48 percent interest in a portfolio of five communities that are currently under construction. The transaction is expected to close in May 2015. The communities are located in three of the Company’s core, coastal markets: Metro Seattle, Los Angeles and Orange County, CA. UDR will earn a 6.5 percent preferred return on its $136 million investment through each individual community’s date of stabilization, defined as when a community reaches 80 percent occupancy for ninety consecutive days, while Wolff is allocated all income and expense during the pre-stabilization period. Upon stabilization, income and expense will be shared based on each partner’s ownership percentage. The Company will serve as property manager and be paid a management fee during the lease-up phase and subsequent operation of each of the communities.

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The Company has a fixed price option to acquire Wolff’s remaining interest in each community beginning one year after completion. If the options are exercised for all five communities, the Company’s total price will be $597 million. In the event the Company does not exercise its options to purchase at least two communities, Wolff will be entitled to a 6.5 percent return on its implied equity in the communities not acquired. Wolff is providing certain guaranties and there will be construction loans on all five communities. Once completed the five communities will contain 1,533 homes.

As of March 31, 2015 and December 31, 2014, the Company had deferred fees and deferred profit from the sale of properties to joint ventures or partnerships of $5.6 million and $28.5 million, respectively, which will be recognized through earnings over the weighted average life of the related properties, upon the disposition of the properties to a third party, or upon completion of certain development obligations.

The Company recognized management fees for our management of the joint ventures and partnerships of $2.6 million and $3.3 million for the three months endedMarch 31, 2015 and 2014, respectively. The management fees are included in Joint venture management and other fees on the Consolidated Statements of Operations.

The Company may, in the future, make additional capital contributions to certain of our joint ventures and partnerships should additional capital contributions be necessary to fund acquisitions or operations.

We evaluate our investments in unconsolidated joint ventures and partnerships when events or changes in circumstances indicate that there may be an other-than-temporary decline in value. We consider various factors to determine if a decrease in the value of the investment is other-than-temporary. The Company did not recognize any other-than-temporary decreases in the value of its investments in unconsolidated joint ventures or partnerships during the three months endedMarch 31, 2015 and 2014.

Combined summary balance sheets relating to all of the unconsolidated joint ventures and partnerships (not just our proportionate share) are presented below as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	March 31, 2015		December 31, 2014
Total real estate, net	$	2,970,102	$	2,941,803
Assets held for sale	—		216,196
Cash and cash equivalents	29,544		32,544
Other assets	31,162		28,707
Total assets	$	3,030,808	$	3,219,250
Amount due to UDR	$	4,691	$	2,997
Third party debt	1,514,886		1,504,477
Liabilities held for sale	—		229,706
Accounts payable and accrued liabilities	52,146		44,335
Total liabilities	1,571,723		1,781,515
Total equity	1,459,085		1,437,735
Total liabilities and equity	$	3,030,808	$	3,219,250
UDR’s investment in unconsolidated joint ventures	$	763,540	$	718,226

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Combined summary financial information relating to all of the unconsolidated joint ventures’ and partnerships’ operations (not just our proportionate share), is presented below for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total revenues	$	54,546		$	38,955
Property operating expenses	(20,168		)	(14,360		)
Real estate depreciation and amortization	(19,351		)	(14,688		)
Operating income/(loss)	15,027			9,907
Interest expense	(16,061		)	(12,151		)
Income/(loss) from discontinued operations	182,488			(29,997		)
Net income/(loss)	$	181,454		$	(32,241	)
UDR income/(loss) from unconsolidated entities	$	59,159		$	(3,565	)

6. SECURED AND UNSECURED DEBT

The following is a summary of our secured and unsecured debt at March 31, 2015 and December 31, 2014 (dollars in thousands):

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Secured Debt:
Fixed Rate Debt
Mortgage notes payable (a)	$	411,271	$	401,210	5.49	%	1.4	7
Fannie Mae credit facilities (b)	567,169		568,086		5.12	%	3.8	22
Total fixed rate secured debt	978,440		969,296		5.28	%	2.8	29
Variable Rate Debt
Mortgage notes payable	31,337		31,337		1.94	%	1.8	1
Tax-exempt secured notes payable (c)	94,700		94,700		0.76	%	7.9	2
Fannie Mae credit facilities (b)	266,196		266,196		1.62	%	4.9	7
Total variable rate secured debt	392,233		392,233		1.44	%	5.4	10
Total Secured Debt	1,370,673		1,361,529		4.18	%	3.5	39
Unsecured Debt:
Commercial Banks
Borrowings outstanding under an unsecured credit facility due December 2017 (d) (f)	389,000		152,500		1.08	%	2.7
Senior Unsecured Notes
5.25% Medium-Term Notes due January 2015 (net of discounts of $0 and $6, respectively) (e)	—		325,169		—	%	—
5.25% Medium-Term Notes due January 2016	83,260		83,260		5.25	%	0.8
6.21% Medium-Term Notes due July 2016	12,865		—		6.21	%	1.3
4.25% Medium-Term Notes due June 2018 (net of discounts of $1,358 and $1,465, respectively) (f)	298,642		298,535		4.25	%	3.2
1.70% Term Notes due June 2018 (f)	215,000		215,000		1.70	%	3.2
1.53% Term Notes due June 2018 (f)	100,000		100,000		1.53	%	3.2
1.32% Term Notes due June 2018 (f)	35,000		35,000		1.32	%	3.2
3.70% Medium-Term Notes due October 2020 (net of discounts of $44 and $46, respectively) (f)	299,956		299,954		3.70	%	5.5
4.63% Medium-Term Notes due January 2022 (net of discounts of $2,433 and $2,523, respectively) (f)	397,567		397,477		4.63	%	6.8
3.75% Medium-Term Notes due July 2024 (net of discount of $964 and $990, respectively) (f)	299,036		299,010		3.75	%	9.3
8.50% Debentures due September 2024	15,644		15,644		8.50	%	9.5
Other	26		27		N/A		N/A
Total Unsecured Debt	2,145,996		2,221,576		3.26	%	4.9
Total Debt	$	3,516,669	$	3,583,105	3.62	%	4.4

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Our secured debt instruments generally feature either monthly interest and principal or monthly interest-only payments with balloon payments due at maturity. For purposes of classification of the above table, variable rate debt with a derivative financial instrument designated as a cash flow hedge is deemed as fixed rate debt due to the Company having effectively established a fixed interest rate for the underlying debt instrument. Secured debt encumbers $2.3 billion or 26.7% of UDR’s total real estate owned based upon gross book value ($6.2 billion or 73.3% of UDR’s real estate owned based on gross book value is unencumbered) as of March 31, 2015.

(a) At March 31, 2015, fixed rate mortgage notes payable are generally due in monthly installments of principal and interest and mature at various dates from December 2015 through May 2019 and carry interest rates ranging from 3.43% to 6.16%.

The Company will from time to time acquire properties subject to fixed rate debt instruments. In those situations, the Company records the debt at its estimated fair value and amortizes any difference between the fair value and par to interest expense over the life of the underlying debt instrument. The Company had a reduction to interest expense based on the amortization of the fair market adjustment of debt assumed in the acquisition of properties of $1.1 million and $1.3 million during the three months endedMarch 31, 2015 and 2014, respectively. The unamortized fair market adjustment was a net premium of $7.0 million and $6.7 million at March 31, 2015 and December 31, 2014, respectively.

(b) UDR has three secured credit facilities with Fannie Mae with an aggregate commitment of $833.4 million at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $567.2 million of the outstanding balance was fixed and had a weighted average interest rate of 5.12% and the remaining balance of $266.2 million had a weighted average variable interest rate of 1.62%.

Further information related to these credit facilities is as follows (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	833,365		$	834,282
Weighted average borrowings during the period ended	833,697			835,873
Maximum daily borrowings during the period ended	834,003			837,564
Weighted average interest rate during the period ended	4.0		%	4.1		%
Weighted average interest rate at the end of the period	4.0		%	4.0		%

(c) The variable rate mortgage notes payable that secure tax-exempt housing bond issues mature in August 2019 and March 2032. Interest on these notes is payable in monthly installments. The variable rate mortgage notes have interest rates of 0.76% and 0.77% as of March 31, 2015.

(d) As of March 31, 2015, the Company has a $900 million unsecured revolving credit facility that matures in December 2017. The credit facility has a six month extension option and contains an accordion feature that allows us to increase the facility to $1.45 billion. Based on the Company’s current credit rating, the credit facility carries an interest rate equal to LIBOR plus a spread of 100 basis points and a facility fee of 15 basis points.

18

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The following is a summary of short-term bank borrowings under UDR’s revolving credit facility at March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Total revolving credit facility	$	900,000		$	900,000
Borrowings outstanding at end of period (1)	389,000			152,500
Weighted average daily borrowings during the period ended	356,043			291,761
Maximum daily borrowings during the period ended	449,500			625,000
Weighted average interest rate during the period ended	1.2		%	1.2		%
Interest rate at end of the period	1.1		%	1.1		%

(1) Excludes $1.5 million and $1.9 million of letters of credit at March 31, 2015 and December 31, 2014, respectively.

(e) Paid off at maturity with borrowings under the Company's $900 million unsecured revolving credit facility.

(f) The Operating Partnership is a guarantor of this debt.

The aggregate maturities, including amortizing principal payments of unsecured and secured debt, of total debt for the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

Year	Total Fixed Secured Debt		Total Variable Secured Debt		Total Secured Debt		Total Unsecured Debt (a)		Total Debt
2015	$	194,779	$	—	$	194,779	$	114	$	194,893
2016	148,223		—		148,223		94,468		242,691
2017	177,882		96,337		274,219		389,000		663,219
2018	121,685		104,787		226,472		648,444		874,916
2019	245,871		67,700		313,571		—		313,571
Thereafter	90,000		123,409		213,409		1,013,970		1,227,379
Total	$	978,440	$	392,233	$	1,370,673	$	2,145,996	$	3,516,669

(a) With the exception of the 1.32% Term Notes due June 2018 and the revolving credit facility which carry a variable interest rate, all unsecured debt carries fixed interest rates.

We were in compliance with the covenants of our debt instruments at March 31, 2015.

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

7. INCOME/(LOSS) PER SHARE

The following table sets forth the computation of basic and diluted income/(loss) per share for the periods presented (dollars and shares in thousands, except per share data):

	Three Months Ended
	March 31,
	2015			2014
Numerator for income/(loss) per share:
Income/(loss) from continuing operations	$	76,417		$	(5,195	)
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
(Income)/loss from continuing operations attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(650		)
(Income)/loss from continuing operations attributable to noncontrolling interests	(7		)	(4		)
Income/(loss) from continuing operations attributable to UDR, Inc.	73,822			18,445
Distributions to preferred stockholders - Series E (Convertible)	(931		)	(931		)
Income/(loss) from continuing operations attributable to common stockholders	$	72,891		$	17,514
Income/(loss) from discontinued operations, net of tax	$	—		$	(87	)
(Income)/loss from discontinued operations attributable to redeemable noncontrolling interests in the Operating Partnership	—			3
Income/(loss) from discontinued operations attributable to common stockholders	$	—		$	(84	)
Net income/(loss) attributable to common stockholders	$	72,891		$	17,430
Denominator for income/(loss) per share:
Weighted average common shares outstanding	258,100			251,213
Non-vested restricted stock awards	(1,266		)	(1,036		)
Denominator for basic income/(loss) per share	256,834			250,177
Incremental shares issuable from assumed conversion of stock options and unvested restricted stock	1,828			1,645
Denominator for diluted income/(loss) per share	258,662			251,822
Income/(loss) per weighted average common share-basic:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07
Income/(loss) per weighted average common share-diluted:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07

Basic income/(loss) per common share is computed based upon the weighted average number of common shares outstanding. Diluted income/(loss) per share is computed based upon the weighted average number of common shares outstanding plus the common shares issuable from the assumed conversion of the OP Units, convertible preferred stock, stock options, and restricted stock. Only those instruments having a dilutive impact on our basic income/(loss) per share are included in diluted income/(loss) per share during the periods.

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The following table sets forth the additional shares of common stock outstanding by equity instrument if converted to common stock for each of the three months endedMarch 31, 2015 and 2014(shares in thousands):

	Three Months Ended
	March 31,
	2015	2014
OP Units	9,165	9,319
Preferred stock	3,036	3,036
Stock options and unvested restricted stock	1,828	1,645

8. NONCONTROLLING INTERESTS

Redeemable Noncontrolling Interests in the Operating Partnership

Interests in the Operating Partnership held by limited partners are represented by OP Units. The income is allocated to holders of OP Units based upon net income attributable to common stockholders and the weighted average number of OP Units outstanding to total common shares plus OP Units outstanding during the period. Capital contributions, distributions, and profits and losses are allocated to noncontrolling interests in accordance with the terms of the individual partnership agreements.

Limited partners have the right to require the Operating Partnership to redeem all or a portion of the OP Units held by the limited partners at a redemption price equal to and in the form of the Cash Amount as defined in the Amended and Restated Agreement of Limited Partnership of the Operating Partnership (the “Operating Partnership Agreement”), provided that such OP Units have been outstanding for at least one year. UDR, as the general partner of the Operating Partnership may, in its sole discretion, purchase the OP Units by paying to the limited partner either the Cash Amount or the REIT Share Amount (generally one share of common stock of the Company for each OP Unit), as defined in the Operating Partnership Agreement. Accordingly, the Company records the OP Units outside of permanent equity and reports the OP Units at their redemption value using the Company’s stock price at each balance sheet date.

The following table sets forth redeemable noncontrolling interests in the Operating Partnership for the following period (dollars in thousands):

Redeemable noncontrolling interests in the Operating Partnership, December 31, 2014	$	282,480
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership	29,696
Conversion of OP Units to Common Stock	(17		)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership	2,588
Distributions to redeemable noncontrolling interests in the Operating Partnership	(2,639		)
Allocation of other comprehensive income/(loss)	(225		)
Redeemable noncontrolling interests in the Operating Partnership, March 31, 2015	$	311,883

The following sets forth net income/(loss) attributable to common stockholders and transfers from redeemable noncontrolling interests in the Operating Partnership for the following periods (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Net income/(loss) attributable to common stockholders	$	72,891	$	17,430
Conversion of OP Units to UDR Common stock	17		—
Change in equity from net income/(loss) attributable to common stockholders and conversion of OP Units to UDR Common Stock	$	72,908	$	17,430

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UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Noncontrolling Interests

Noncontrolling interests represent interests of unrelated partners in certain consolidated affiliates, and are presented as part of equity in the Consolidated Balance Sheets since these interests are not redeemable. Net (income)/loss attributable to noncontrolling interests was $(7,000) and $(4,000) during the three months endedMarch 31, 2015 and 2014, respectively.

9. FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

Fair value is based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:

• Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

• Level 2 — Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

22

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The estimated fair values of the Company’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	15,494	$	15,923	$	—	$	—	$	15,923
Derivatives - Interest rate contracts (b)	29		29		—		29		—
Total assets	$	15,523	$	15,952	$	—	$	29	$	15,923
Derivatives - Interest rate contracts (b)	$	17,112	$	17,112	$	—	$	17,112	$	—
Secured debt instruments - fixed rate: (c)
Mortgage notes payable	411,271		425,969		—		—		425,969
Fannie Mae credit facilities	567,169		599,580		—		—		599,580
Secured debt instruments - variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	389,000		389,000		—		—		389,000
Senior unsecured notes	1,756,996		1,852,361		—		—		1,852,361
Total liabilities	$	3,533,781	$	3,676,255	$	—	$	17,112	$	3,659,143
Redeemable noncontrolling interests in the Operating Partnership (d)	$	311,883	$	311,883	$	—	$	311,883	$	—

23

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	14,369	$	14,808	$	—	$	—	$	14,808
Derivatives- Interest rate contracts (b)	88		88		—		88		—
Total assets	$	14,457	$	14,896	$	—	$	88	$	14,808
Derivatives- Interest rate contracts (b)	$	10,368	$	10,368	$	—	$	10,368	$	—
Secured debt instruments- fixed rate: (c)
Mortgage notes payable	401,210		415,663		—		—		415,663
Fannie Mae credit facilities	568,086		606,623		—		—		606,623
Secured debt instruments- variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	152,500		152,500		—		—		152,500
Senior unsecured notes	2,069,076		2,144,125		—		—		2,144,125
Total liabilities	$	3,593,473	$	3,721,512	$	—	$	10,368	$	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	$	282,480	$	282,480	$	—	$	282,480	$	—

(a) See Note 2, Significant Accounting Policies.

(b) See Note 10, Derivatives and Hedging Activity.

(c) See Note 6, Secured and Unsecured Debt.

(d) See Note 8, Noncontrolling Interests.

There were no transfers into or out of each of the levels of the fair value hierarchy.

Financial Instruments Carried at Fair Value

The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rise above the strike rate of the caps. The variable interest rates used in the calculation of projected receipts on the cap are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

24

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2015 and December 31, 2014, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. In conjunction with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Redeemable noncontrolling interests in the Operating Partnership have a redemption feature and are marked to their redemption value. The redemption value is based on the fair value of the Company’s common stock at the redemption date, and therefore, is calculated based on the fair value of the Company’s common stock at the balance sheet date. Since the valuation is based on observable inputs such as quoted prices for similar instruments in active markets, redeemable noncontrolling interests in the Operating Partnership are classified as Level 2.

Financial Instruments Not Carried at Fair Value

At March 31, 2015, the fair values of cash and cash equivalents, restricted cash, accounts receivable, prepaids, real estate taxes payable, accrued interest payable, security deposits and prepaid rent, distributions payable and accounts payable approximated their carrying values because of the short term nature of these instruments. The estimated fair values of other financial instruments were determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair values. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company would realize on the disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts.

We estimate the fair value of our notes receivable and debt instruments by discounting the remaining cash flows of the debt instrument at a discount rate equal to the replacement market credit spread plus the corresponding treasury yields. Factors considered in determining a replacement market credit spread include general market conditions, borrower specific credit spreads, time remaining to maturity, loan-to-value ratios and collateral quality, where applicable (Level 3).

We record impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the undiscounted cash flows estimated to be generated by the future operation and disposition of those assets are less than the net book value of those assets. Our cash flow estimates are based upon historical results adjusted to reflect our best estimate of future market and operating conditions and our estimated holding periods. The net book value of impaired assets is reduced to fair value. Our estimates of fair value represent our best estimate based upon Level 3 inputs such as industry trends and reference to market rates and transactions.

We consider various factors to determine if a decrease in the value of our investment in and advances to unconsolidated joint ventures, net is other-than-temporary. These factors include, but are not limited to, age of the venture, our intent and ability to retain our investment in the entity, the financial condition and long-term prospects of the entity, and the relationships with the other joint venture partners and its lenders. Based on the significance of the unobservable inputs, we classify these fair value measurements within Level 3 of the valuation hierarchy. The Company did not incur any other-than-temporary decrease in the value of its investments in unconsolidated joint ventures during the three months endedMarch 31, 2015 and 2014.

After determining an other-than-temporary decrease in the value of an equity method investment has occurred, we estimate the fair value of our investment by estimating the proceeds we would receive upon a hypothetical liquidation of the investment at the date of measurement. Inputs reflect management’s best estimate of what market participants would use in pricing the investment giving consideration to the terms of the joint venture agreement and the estimated discounted future cash flows to be generated from the underlying joint venture assets. The inputs and assumptions utilized to estimate the future cash flows of the underlying assets are based upon the Company’s evaluation of the economy, market trends, operating results, and other factors, including judgments regarding costs to complete any construction activities, lease up and occupancy rates, rental rates, inflation rates, capitalization rates utilized to estimate the projected cash flows at the disposition, and discount rates.

25

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

10. DERIVATIVES AND HEDGING ACTIVITY

Risk Management Objective of Using Derivatives

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its debt funding and through the use of derivative financial instruments. Specifically, the Company may enter into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s investments and borrowings.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps and caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up front premium.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three months endedMarch 31, 2015 and 2014, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months endedMarch 31, 2015 and 2014, the Company recorded no ineffectiveness to earnings.

Amounts reported in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate debt. Through December 31, 2015, the Company estimates that an additional $6.3 million will be reclassified as an increase to interest expense.

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	9	$	565,000
Interest rate caps	3	$	243,079

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	$	96,409

26

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	28	86		$	17,112	$	10,368
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Tabular Disclosure of the Effect of Derivative Instruments on the Consolidated Statements of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)						Gain/(Loss) Recognized in Interest expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2015			2014			2015			2014			2015		2014
Three Months Ended March 31,
Interest rate products	$	(7,552	)	$	(55	)	$	(737	)	$	(1,532	)	$	—	$	—

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Credit-risk-related Contingent Features

The Company has agreements with some of its derivative counterparties that contain a provision where (1) if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations; or (2) the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness.

Certain of the Company’s agreements with its derivative counterparties contain provisions where, if there is a change in the Company’s financial condition that materially changes the Company’s creditworthiness in an adverse manner, the Company may be required to fully collateralize its obligations under the derivative instrument.

The Company also has an agreement with a derivative counterparty that incorporates the loan and financial covenant provisions of the Company’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with these covenant provisions would result in the Company being in default on any derivative instrument obligations covered by the agreement.

27

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

As of March 31, 2015, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $17.5 million. As of March 31, 2015, the Company has not posted any collateral related to these agreements. If the Company had breached any of these provisions at March 31, 2015, it may have been required to settle its obligations under the agreements at their termination value of $17.5 million.

Tabular Disclosure of Offsetting Derivatives

Company has elected not to offset derivative positions in the consolidated financial statements. The tables below present the effect on its financial position had the Company made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014(dollar in thousands):

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Received		Net Amount
March 31, 2015	$	29	$	—	$	29	$	—		$	—	$	29
December 31, 2014	$	88	$	—	$	88	$	(27	)	$	—	$	61

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Posted		Net Amount
March 31, 2015	$	17,112	$	—	$	17,112	$	—		$	—	$	17,112
December 31, 2014	$	10,368	$	—	$	10,368	$	(27	)	$	—	$	10,341

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

11. STOCK BASED COMPENSATION

The Company recognized stock based compensation expense, inclusive of awards granted to our independent directors, of $4.5 million and $3.7 million during the three months endedMarch 31, 2015 and 2014, respectively.

28

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

12. COMMITMENTS AND CONTINGENCIES

Commitments

Real Estate Under Development

The following summarizes the Company’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)			Expected Costs to Complete			Average Ownership Stake
Wholly-owned — under development	1	$	196,653	(b)	$	21,047		100	%
Wholly-owned — redevelopment	2	90,382		(b)	22,618			100	%
Joint ventures:
Unconsolidated joint ventures	4	285,730			189,037		(c)	Various
Participating loan investments	1	75,647		(d)	16,362		(e)	0	%
		$	648,412		$	249,064

(a) Represents 100% of project costs incurred to date.

(b) Costs incurred to date include $11.1 million and $2.3 million of accruedfixed assets for development and redevelopment, respectively.

(c) Represents UDR’s proportionate share of expected remaining costs to complete.

(d) Represents the participating loan balance funded as of March 31, 2015.

(e) Represents UDR’s remaining participating loan commitment for Steele Creek.

Contingencies

Litigation and Legal Matters

The Company is subject to various legal proceedings and claims arising in the ordinary course of business. The Company cannot determine the ultimate liability with respect to such legal proceedings and claims at this time. The Company believes that such liability, to the extent not provided for through insurance or otherwise, will not have a material adverse effect on our financial condition, results of operations or cash flow.

13. REPORTABLE SEGMENTS

GAAP guidance requires that segment disclosures present the measure(s) used by the chief operating decision maker to decide how to allocate resources and for purposes of assessing such segments’ performance. UDR’s chief operating decision maker is comprised of several members of its executive management team who use several generally accepted industry financial measures to assess the performance of the business for our reportable operating segments.

UDR owns and operates multifamily apartment communities that generate rental and other property related income through the leasing of apartment homes to a diverse base of tenants. The primary financial measures for UDR’s apartment communities are rental income and net operating income (“NOI”). Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. NOI is defined as rental income less direct property rental expenses. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense, which is calculated as 2.75% of property revenue to cover the regional supervision and accounting costs related to consolidated property operations, and land rent. UDR’s chief operating decision maker utilizes NOI as the key measure of segment profit or loss.

29

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

UDR’s two reportable segments are Same-Store Communities and Non-Mature Communities/Other:

• Same-Store Communities represent those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. A comparison of operating results from the prior year is meaningful as these communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

• Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Management evaluates the performance of each of our apartment communities on a Same-Store Community and Non-Mature Community/Other basis, as well as individually and geographically. This is consistent with the aggregation criteria under GAAP as each of our apartment communities generally has similar economic characteristics, facilities, services, and tenants. Therefore, the Company’s reportable segments have been aggregated by geography in a manner identical to that which is provided to the chief operating decision maker.

All revenues are from external customers and no single tenant or related group of tenants contributed 10% or more of UDR’s total revenues during the three months endedMarch 31, 2015 and 2014.

30

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The following table details rental income and NOI from continuing and discontinued operations for UDR’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net Income/(Loss) Attributable to UDR, Inc. in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	67,857		$	63,267
Mid-Atlantic Region	42,795			42,049
Southeast Region	27,829			26,497
Northeast Region	20,892			19,803
Southwest Region	14,107			13,467
Non-Mature Communities/Other	33,567			29,317
Total consolidated rental income	$	207,047		$	194,400
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	50,228		$	45,408
Mid-Atlantic Region	29,288			28,835
Southeast Region	18,547			17,872
Northeast Region	15,566			14,546
Southwest Region	8,536			8,358
Non-Mature Communities/Other	21,410			17,105
Total consolidated NOI	143,575			132,124
Reconciling items:
Joint venture management and other fees	12,706			3,687
Property management	(5,694		)	(5,346		)
Other operating expenses	(1,766		)	(1,935		)
Real estate depreciation and amortization	(88,777		)	(88,533		)
General and administrative	(12,152		)	(11,994		)
Casualty-related recoveries/(charges), net	(996		)	(500		)
Other depreciation and amortization	(1,623		)	(1,080		)
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Tax benefit/(expense), net	425			3,329
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	$	73,822		$	18,361

(a) Same-Store Community population consisted of 36,063 apartment homes.

31

UDR, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

MARCH 31, 2015

The following table details the assets of UDR’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets:
Same-Store Communities:
West Region	$	2,626,770		$	2,620,242
Mid-Atlantic Region	1,536,389			1,533,993
Southeast Region	788,668			786,438
Northeast Region	1,078,431			1,076,656
Southwest Region	441,888			440,721
Non-Mature Communities/Other	1,981,502			1,925,209
Total assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Total assets — net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274			15,224
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Investment in and advances to unconsolidated joint ventures, net	763,540			718,226
Other assets	96,713			105,202
Total consolidated assets	$	6,858,511		$	6,846,534

Capital expenditures related to our Same-Store Communities totaled $13.3 million and $7.7 million for the three months endedMarch 31, 2015 and 2014, respectively. Capital expenditures related to our Non-Mature Communities/Other totaled $2.5 million and $2.1 million for the three months endedMarch 31, 2015 and 2014.

Markets included in the above geographic segments are as follows:

i. West Region — Orange County, San Francisco, Seattle, Los Angeles, Monterey Peninsula, Other Southern California, and Portland

ii. Mid-Atlantic Region — Metropolitan D.C., Baltimore, Richmond, Norfolk, and Other Mid-Atlantic

iii. Southeast Region — Tampa, Orlando, Nashville, and Other Florida

iv. Northeast Region — New York and Boston

v. Southwest Region — Dallas and Austin

32

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UNITED DOMINION REALTY, L.P.

CONSOLIDATED BALANCE SHEETS

(In thousands, except for unit data)

	March 31, 2015			December 31, 2014
	(unaudited)			(audited)
ASSETS
Real estate owned:
Real estate held for investment	$	4,248,795		$	4,238,770
Less: accumulated depreciation	(1,447,513		)	(1,403,303		)
Total real estate owned, net of accumulated depreciation	2,801,282			2,835,467
Cash and cash equivalents	826			502
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total assets	$	2,843,381		$	2,878,284
LIABILITIES AND CAPITAL
Liabilities:
Secured debt	$	929,702		$	931,959
Notes payable due to General Partner	88,696			88,696
Real estate taxes payable	10,101			7,061
Accrued interest payable	3,243			3,284
Security deposits and prepaid rent	17,916			18,387
Distributions payable	50,962			47,788
Deferred gains on the sale of depreciable property	—			24,622
Accounts payable, accrued expenses, and other liabilities	13,903			22,436
Total liabilities	1,114,523			1,144,233
Commitments and contingencies (Note 9)
Capital:
Partners’ capital:
General partner: 110,883 OP Units outstanding at March 31, 2015 and December 31, 2014	1,096			1,105
Limited partners: 183,167,815 OP Units outstanding at March 31, 2015 and December 31, 2014	1,688,364			1,702,971
Accumulated other comprehensive income/(loss), net	(840		)	(1,075		)
Total partners’ capital	1,688,620			1,703,001
Advances (to)/from General Partner	22,418			13,624
Noncontrolling interests	17,820			17,426
Total capital	1,728,858			1,734,051
Total liabilities and capital	$	2,843,381		$	2,878,284

See accompanying notes to the consolidated financial statements.

34

UNITED DOMINION REALTY, L.P.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per unit data)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
REVENUES:
Rental income	$	110,095		$	102,370
OPERATING EXPENSES:
Property operating and maintenance	19,114			18,234
Real estate taxes and insurance	12,866			11,719
Property management	3,027			2,815
Other operating expenses	1,490			1,436
Real estate depreciation and amortization	44,478			44,271
General and administrative	5,639			6,970
Casualty-related (recoveries)/charges, net	593			500
Total operating expenses	87,207			85,945
Operating income	22,888			16,425
Interest expense	(9,620		)	(8,863		)
Interest expense on note payable due to General Partner	(1,151		)	(1,151		)
Income/(loss) before gain/(loss) on sale of real estate owned	12,117			6,411
Gain/(loss) on sale of real estate owned	24,623			24,402
Net income/(loss)	36,740			30,813
Net (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Net income/(loss) attributable to OP unitholders	$	36,346		$	30,533
Income/(loss) per weighted average OP Unit - basic and diluted:	$	0.20		$	0.17
Weighted average OP Units outstanding - basic and diluted	183,279			183,279

See accompanying notes to the consolidated financial statements.

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UNITED DOMINION REALTY, L.P.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS)

(In thousands)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
Net income/(loss)	$	36,740		$	30,813
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Other comprehensive income/(loss) - derivative instruments:
Unrealized holding gain/(loss)	(51		)	(51		)
(Gain)/loss reclassified into earnings from other comprehensive income/(loss)	286			623
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	235			572
Comprehensive income/(loss)	36,975			31,385
Comprehensive (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Comprehensive income/(loss) attributable to OP unitholders	$	36,581		$	31,105

See accompanying notes to consolidated financial statements.

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UNITED DOMINION REALTY, L.P.

CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL

(In thousands)

(Unaudited)

	Class A Limited Partners			Limited Partners			UDR, Inc.						Accumulated Other Comprehensive Income/(Loss), net			Total Partners’ Capital			Advances (to)/from General Partner		Noncontrolling Interests
							Limited Partner			General Partner													Total
Balance at December 31, 2014	$	53,987		$	228,493		$	1,420,491		$	1,105		$	(1,075	)	$	1,703,001		$	13,624	$	17,426	$	1,734,051
Net income/(loss)	415			1,467			34,442			22			—			36,346			—		394		36,740
Distributions	(582		)	(2,057		)	(48,292		)	(31		)	—			(50,962		)	—		—		(50,962		)
OP Unit Redemptions for common shares of UDR	—			(16		)	16			—			—			—			—		—		—
Adjustment to reflect limited partners’ capital at redemption value	5,789			24,387			(30,176		)	—			—			—			—		—		—
Unrealized gain on derivative financial investments	—			—			—			—			235			235			—		—		235
Net change in advances (to)/from General Partner	—			—			—			—			—			—			8,794		—		8,794
Balance at March 31, 2015	$	59,609		$	252,274		$	1,376,481		$	1,096		$	(840	)	$	1,688,620		$	22,418	$	17,820	$	1,728,858

See accompanying notes to the consolidated financial statements.

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UNITED DOMINION REALTY, L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands, except for unit data)

(Unaudited)

	Three Months Ended
	March 31,
	2015			2014
Operating Activities
Net income/(loss)	$	36,740		$	30,813
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:
Depreciation and amortization	44,478			44,271
Gain/(loss) on sale of real estate owned	(24,623		)	(24,402		)
Casualty-related (recoveries)/charges, net	593			500
Other	(108		)	32
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	342			1,510
Increase/(decrease) in operating liabilities	100			(4,052		)
Net cash provided by/(used in) operating activities	57,522			48,672
Investing Activities
Proceeds from sale of real estate investments, net	—			47,922
Development of real estate assets	(7,141		)	(9,860		)
Capital expenditures and other major improvements — real estate assets, net of escrow reimbursement	(9,761		)	(9,181		)
Net cash provided by/(used in) investing activities	(16,902		)	28,881
Financing Activities
Advances from/(to) General Partner, net	(36,485		)	(74,963		)
Payments on secured debt	(1,302		)	(1,274		)
Distributions paid to partnership unitholders	(2,509		)	(2,360		)
Net cash provided by/(used in) financing activities	(40,296		)	(78,597		)
Net increase/(decrease) in cash and cash equivalents	324			(1,044		)
Cash and cash equivalents, beginning of period	502			1,897
Cash and cash equivalents, end of period	$	826		$	853
Supplemental Information:
Interest paid during the period, net of amounts capitalized	$	11,471		$	10,742

See accompanying notes to the consolidated financial statements.

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UNITED DOMINION REALTY, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 2015

1. CONSOLIDATION AND BASIS OF PRESENTATION

Consolidation and Basis of Presentation

United Dominion Realty, L.P. (“UDR, L.P.,” the “Operating Partnership,” “we” or “our”) is a Delaware limited partnership, that owns, acquires, renovates, redevelops, manages, and disposes of multifamily apartment communities generally located in high barrier to entry markets located in the United States. The high barrier to entry markets are characterized by limited land for new construction, difficult and lengthy entitlement process, expensive single-family home prices and significant employment growth potential. UDR, L.P. is a subsidiary of UDR, Inc. (“UDR” or the “General Partner”), a self-administered real estate investment trust, or REIT, through which UDR conducts a significant portion of its business. During the three months endedMarch 31, 2015 and 2014, rental revenues of the Operating Partnership represented 53% of the General Partner’s consolidated rental revenues. As of March 31, 2015, the Operating Partnership’s apartment portfolio consisted of 68 communities located in 17 markets consisting of 20,809 apartment homes.

Interests in UDR, L.P. are represented by operating partnership units (“OP Units”). The Operating Partnership’s net income is allocated to the partners, which is initially based on their respective distributions made during the year and secondly, their percentage interests. Distributions are made in accordance with the terms of the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. (the “Operating Partnership Agreement”), on a per unit basis that is generally equal to the dividend per share on UDR’s common stock, which is publicly traded on the New York Stock Exchange (“NYSE”) under the ticker symbol “UDR.”

As of March 31, 2015, there were 183,278,698 OP Units outstanding, of which 174,113,759 or 95.0% were owned by UDR and affiliated entities and 9,164,939 or 5.0% were owned by non-affiliated limited partners. See Note 8, Capital Structure.

The accompanying interim unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of our financial position as of March 31, 2015, and results of operations for the three months endedMarch 31, 2015 and 2014 have been included. Such adjustments are normal and recurring in nature. The interim results presented are not necessarily indicative of results that can be expected for a full year. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended March 31, 2015 included in the Annual Report on Form 10-K filed by UDR and the Operating Partnership with the SEC on February 24, 2015.

The accompanying interim unaudited consolidated statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the interim unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All intercompany accounts and transactions have been eliminated in consolidation.

The Operating Partnership evaluated subsequent events through the date its financial statements were issued. No recognized or non-recognized subsequent events were noted.

2. SIGNIFICANT ACCOUNTING POLICIES

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the

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UNITED DOMINION REALTY, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (continued)

MARCH 31, 2015

full or modified retrospective transition method, and the standard will be effective for the Operating Partnership on January 1, 2017; early adoption is not permitted. The Operating Partnership has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Income/(Loss) Per Operating Partnership Unit

Basic income/(loss) per OP Unit is computed by dividing net income/(loss) attributable to general and limited partner unitholders by the weighted average number of general and limited partner units outstanding during the year. Diluted income/(loss) per OP Unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units or resulted in the issuance of OP Units and then shared in the income/(loss) of the Operating Partnership.

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Operating Partnership recognizes interest income, fees and incentives when earned, fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we or our General Partner retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we or our General Partner retain. The Operating Partnership recognizes any deferred gain when the property is sold to a third party. In transactions accounted by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to unitholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Operating Partnership’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges and (gain)/loss reclassified from other comprehensive income/(loss) into earnings. The (gain)/loss reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 7, Derivatives and Hedging Activity, for further discussion.

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UNITED DOMINION REALTY, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (continued)

MARCH 31, 2015

Income Taxes

The taxable income or loss of the Operating Partnership is reported on the tax returns of the partners. Accordingly, no provision has been made in the accompanying financial statements for federal or state income taxes on income that is passed through to the partners. However, any state or local revenue, excise or franchise taxes that result from the operating activities of the Operating Partnership are recorded at the entity level. The Operating Partnership’s tax returns are subject to examination by federal and state taxing authorities. Net income for financial reporting purposes differs from the net income for income tax reporting purposes primarily due to temporary differences, principally real estate depreciation and the tax deferral of certain gains on property sales. The differences in depreciation result from differences in the book and tax basis of certain real estate assets and the differences in the methods of depreciation and lives of the real estate assets.

The Operating Partnership evaluates the accounting and disclosure of tax positions taken or expected to be taken in the course of preparing the Operating Partnership’s tax returns to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet the more-likely-than-not threshold would be recorded as a tax benefit or expense in the current year. Management of the Operating Partnership is required to analyze all open tax years, as defined by the statute of limitations, for all major jurisdictions, which include federal and certain states. The Operating Partnership has no examinations in progress and none are expected at this time.

Management of the Operating Partnership has reviewed all open tax years (2010 through 2013) of tax jurisdictions and concluded there is no tax liability resulting from unrecognized tax benefits relating to uncertain income tax positions taken or expected to be taken in future tax returns.

3. REAL ESTATE OWNED

Real estate assets owned by the Operating Partnership consists of income producing operating properties, properties under development, land held for future development, and sold or held for disposition properties. As of March 31, 2015, the Operating Partnership owned and consolidated 68 communities in nine states plus the District of Columbia totaling 20,809 apartment homes. The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land	$	1,008,358		$	1,008,014
Depreciable property — held and used:
Buildings, improvements, and furniture, fixture and equipment	3,240,437			3,230,756
Real estate owned	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Real estate owned, net	$	2,801,282		$	2,835,467

The Operating Partnership did not have any acquisitions or real estate sales during the three months endedMarch 31, 2015.

Predevelopment, development, and redevelopment projects and related costs are capitalized and reported on the Consolidated Balance Sheets asTotal real estate owned, net of accumulated depreciation. The Operating Partnership capitalizes costs directly related to the predevelopment, development, and redevelopment of a capital project, which include, but are not limited to, interest, real estate taxes, insurance, and allocated development and redevelopment overhead related to support costs for personnel working on the capital projects. We use our professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. These costs, excluding the direct costs of development and redevelopment and capitalized interest, were $133,000 and $1.0 million for the three months endedMarch 31, 2015 and 2014, respectively. Total interest capitalized was $22,000 and $755,000 during the three months endedMarch 31, 2015 and 2014, respectively. As each home in a capital project is completed and becomes available for lease-up, the Company ceases capitalization on the related portion and depreciation commences over the estimated useful life.

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UNITED DOMINION REALTY, L.P.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (continued)

MARCH 31, 2015

During the three months endedMarch 31, 2015, the Company recorded a loss of of $593,000 related to damage caused by severe snow storms to properties located on the east coast, which is included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.

4. DEBT

Our secured debt instruments generally feature either monthly interest and principal or monthly interest-only payments with balloon payments due at maturity. For purposes of classification in the following table, variable rate debt with a derivative financial instrument designated as a cash flow hedge is deemed as fixed rate debt due to the Operating Partnership having effectively established the fixed interest rate for the underlying debt instrument. Secured debt consists of the following as of March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Fixed Rate Debt
Mortgage notes payable	$	376,207	$	378,371	5.48	%	1.4	5
Fannie Mae credit facilities	333,735		333,828		4.90	%	4.3	10
Total fixed rate secured debt	709,942		712,199		5.21	%	2.8	15
Variable Rate Debt
Tax-exempt secured note payable	27,000		27,000		0.77	%	17.0	1
Fannie Mae credit facilities	192,760		192,760		1.85	%	5.7	5
Total variable rate secured debt	219,760		219,760		1.72	%	7.1	6
Total Secured Debt	$	929,702	$	931,959	4.38	%	3.8	21

As of March 31, 2015, an aggregate commitment of $526.5 million of the General Partner's secured credit facilities with Fannie Mae was allocated to the Operating Partnership based on the ownership of the assets securing the debt. The entire commitment was outstanding at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $333.7 million of the outstanding balance was fixed and had a weighted average interest rate of 4.90% and the remaining balance of $192.8 million on these facilities had a weighted average variable interest rate of 1.85%.

The following information relates to the credit facilities allocated to the Operating Partnership (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	526,495		$	526,588
Weighted average borrowings during the period ended	526,705			527,592
Maximum daily borrowings during the period	526,898			528,659
Weighted average interest rate during the period ended	4.0		%	4.1		%
Interest rate at the end of the period	4.0		%	4.0		%

The Operating Partnership may from time to time acquire properties subject to fixed rate debt instruments. In those situations, management will record the secured debt at its estimated fair value and amortize any difference between the fair value and par to interest expense over the life of the underlying debt instrument. The unamortized fair value adjustment of the fixed rate debt instruments on the Operating Partnership’s properties was a net premium of $5.2 million and $6.2 million at March 31, 2015 and December 31, 2014, respectively.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (continued)

MARCH 31, 2015

Fixed Rate Debt

Mortgage notes payable. Fixed rate mortgage notes payable are generally due in monthly installments of principal and interest and mature at various dates from December 2015 through May 2019 and carry interest rates ranging from 3.43% to 5.94%.

Secured credit facilities. At March 31, 2015, the General Partner had borrowings against its fixed rate facilities of $567.2 million, of which $333.7 million was allocated to the Operating Partnership based on the ownership of the assets securing the debt. As of March 31, 2015, the fixed rate Fannie Mae credit facilities allocated to the Operating Partnership had a weighted average fixed interest rate of 4.90%.

Variable Rate Debt

Tax-exempt secured note payable. The variable rate mortgage note payable that secures tax-exempt housing bond issues matures March 2032. Interest on this note is payable in monthly installments. The mortgage note payable has an interest rate of 0.77% as of March 31, 2015.

Secured credit facilities. At March 31, 2015, the General Partner had borrowings against its variable rate facilities of $266.2 million, of which $192.8 million was allocated to the Operating Partnership based on the ownership of the assets securing the debt. As of March 31, 2015, the variable rate borrowings under the Fannie Mae credit facilities allocated to the Operating Partnership had a weighted average floating interest rate of 1.85%.

The aggregate maturities of the Operating Partnership’s secured debt due during each of the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

	Fixed				Variable
Year	Mortgage Notes Payable		Secured Credit Facilities		Tax-Exempt Secured Notes Payable		Secured Credit Facilities		Total
2015	$	190,582	$	274	$	—	$	—	$	190,856
2016	131,021		385		—		—		131,406
2017	913		15,640		—		6,566		23,119
2018	968		111,052		—		96,974		208,994
2019	52,723		123,095		—		—		175,818
Thereafter	—		83,289		27,000		89,220		199,509
Total	$	376,207	$	333,735	$	27,000	$	192,760	$	929,702

Guarantor on Unsecured Debt

The Operating Partnership is a guarantor on the General Partner’s unsecured revolving credit facility with an aggregate borrowing capacity of $900 million, $250 million of term notes due June 2018, $100 million of term notes due June 2018, $300 million of medium-term notes due June 2018, $300 million of medium-term notes due October 2020, $400 million of medium-term notes due January 2022, and $300 million of medium-term notes due July 2024. As of March 31, 2015 and December 31, 2014, the outstanding balance under the unsecured revolving credit facility was $389.0 million and $152.5 million, respectively.

5. RELATED PARTY TRANSACTIONS

Advances (To)/From the General Partner

The Operating Partnership participates in the General Partner’s central cash management program, wherein all the Operating Partnership’s cash receipts are remitted to the General Partner and all cash disbursements are funded by the General Partner. In addition, other miscellaneous costs such as administrative expenses are incurred by the General Partner on behalf of the Operating Partnership. As a result of these various transactions between the Operating Partnership and the General Partner, the Operating Partnership had net Advances (to)/from General Partner of $22.4 million and $13.6 million at March 31, 2015 and December 31, 2014, respectively, which are reflected as increases of capital on the Consolidated Balance Sheets.

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MARCH 31, 2015

Allocation of General and Administrative Expenses

The General Partner provides various general and administrative and other overhead services for the Operating Partnership including legal assistance, acquisitions analysis, marketing and advertising, and allocates these expenses to the Operating Partnership first on the basis of direct usage when identifiable, with the remainder allocated based on its pro-rata portion of UDR’s total apartment homes. The general and administrative expenses allocated to the Operating Partnership by UDR were $4.2 million and $6.7 million during the three months endedMarch 31, 2015 and 2014, respectively, and are included in General and administrative on the Consolidated Statements of Operations. In the opinion of management, this method of allocation reflects the level of services received by the Operating Partnership from the General Partner.

During the three months endedMarch 31, 2015 and 2014, the Operating Partnership incurred $4.3 million and $3.1 million, respectively, of related party management fees related to a management agreement entered into in 2011 with wholly-owned subsidiaries of UDR's taxable REIT subsidiary ("TRS"). (See further discussion in paragraph below.) These related party management fees are initially recorded in General and administrative on the Consolidated Statements of Operations, and a portion related to management fees charged by UDR's TRS is reclassified to Property management on the Consolidated Statements of Operations. (See further discussion below.)

Management Fee

In 2011, the Operating Partnership entered into a management agreement with wholly owned subsidiaries of UDR's TRS. Under the management agreement, the Operating Partnership is charged a management fee equal to 2.75% of gross rental revenues, which is classified in Property management on the Consolidated Statements of Operations.

Notes Payable to General Partner

As of March 31, 2015 and December 31, 2014, the Operating Partnership had $88.7 million of unsecured notes payable to the General Partner at annual interest rates between 5.18% and 5.34%. Certain limited partners of the Operating Partnership have provided guarantees related to these notes payable. The guarantees were provided by the limited partners in conjunction with their contribution of properties to the Operating Partnership. The notes mature on August 31, 2021 and December 31, 2023 and interest payments are made monthly. The Operating Partnership recognized interest expense on the notes payable of $1.2 million and $1.2 million during the three months endedMarch 31, 2015 and 2014, respectively.

6. FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

Fair value is based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:

• Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

• Level 2 — Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

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MARCH 31, 2015

The estimated fair values of the Operating Partnership’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	17	$	17	$	—	$	17	$	—
Total assets	$	17	$	17	$	—	$	17	$	—
Derivatives - Interest rate contracts (a)	$	686	$	686	$	—	$	686	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	376,207		388,821		—		—		388,821
Fannie Mae credit facilities	333,735		352,765		—		—		352,765
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	930,388	$	962,032	$	—	$	686	$	961,346

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	39	$	39	$	—	$	39	$	—
Total assets	$	39	$	39	$	—	$	39	$	—
Derivatives - Interest rate contracts (a)	$	918	$	918	$	—	$	918	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	378,371		391,835		—		—		391,835
Fannie Mae credit facilities	333,828		355,470		—		—		355,470
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	932,877	$	967,983	$	—	$	918	$	967,065

(a) See Note 7, Derivatives and Hedging Activity.

(b) See Note 4, Debt.

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UNITED DOMINION REALTY, L.P.

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MARCH 31, 2015

Financial Instruments Carried at Fair Value

The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rise above the strike rate of the caps. The variable interest rates used in the calculation of projected receipts on the cap are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.

The General Partner, on behalf of the Operating Partnership, incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Operating Partnership has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the General Partner, on behalf of the Operating Partnership, has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2015 and December 31, 2014, the Operating Partnership has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Operating Partnership has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. In conjunction with the FASB’s fair value measurement guidance, the Operating Partnership made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Financial Instruments Not Carried at Fair Value

As of March 31, 2015, the fair values of cash and cash equivalents, restricted cash, accounts receivable, prepaids, real estate taxes payable, accrued interest payable, security deposits and prepaid rent, distributions payable and accounts payable approximated their carrying values because of the short term nature of these instruments. The estimated fair values of other financial instruments were determined by the Operating Partnership using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair values. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Operating Partnership would realize on the disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts.

Fair value of our debt instruments is estimated by discounting the remaining cash flows of the debt instrument at a discount rate equal to the replacement market credit spread plus the corresponding treasury yields. Factors considered in determining a replacement market credit spread include general market conditions, borrower specific credit spreads, time remaining to maturity, loan-to-value ratios and collateral quality (Level 3).

The Operating Partnership records impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the undiscounted cash flows estimated to be generated by the future operation and disposition of those assets are less than the net book value of those assets. Cash flow estimates are based upon historical results adjusted to reflect management’s best estimate of future market and operating conditions and our estimated holding periods. The net book value of impaired assets is reduced to fair value. The General Partner’s estimates of fair value represent management’s estimates based upon Level 3 inputs such as industry trends and reference to market rates and transactions.

7. DERIVATIVES AND HEDGING ACTIVITY

Risk Management Objective of Using Derivatives

The Operating Partnership is exposed to certain risks arising from both its business operations and economic conditions. The General Partner principally manages its exposures to a wide variety of business and operational risks through management

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MARCH 31, 2015

of its core business activities. The General Partner manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its debt funding and through the use of derivative financial instruments. Specifically, the General Partner enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The General Partner’s and the Operating Partnership’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the General Partner’s known or expected cash payments principally related to the General Partner’s borrowings.

Cash Flow Hedges of Interest Rate Risk

The General Partner’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the General Partner primarily uses interest rate swaps and caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the General Partner making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up front premium.

A portion of the General Partner’s interest rate derivatives have been allocated to the Operating Partnership based on the General Partner’s underlying debt instruments allocated to the Operating Partnership. (See Note 4, Debt.)

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three months endedMarch 31, 2015 and 2014, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The Operating Partnership recorded no gain or loss from ineffectiveness during the three months endedMarch 31, 2015 and 2014.

Amounts reported in Accumulated other comprehensive income/(loss), net related to derivatives will be reclassified to interest expense as interest payments are made on the General Partner’s variable-rate debt that is allocated to the Operating Partnership. Through December 31, 2015, we estimate that an additional $691,000 will be reclassified as an increase to interest expense.

As of March 31, 2015, the Operating Partnership had the following outstanding interest rate derivatives designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	1	$	46,272
Interest rate caps	2	$	166,341

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, we had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	89,220

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MARCH 31, 2015

Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet

The table below presents the fair value of the Operating Partnership’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	16	$	37	$	686	$	918
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Tabular Disclosure of the Effect of Derivative Instruments on the Consolidated Statements of Operations

The tables below present the effect of the derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)
Derivatives in Cash Flow Hedging Relationships	2015			2014			2015			2014
Three Months Ended March 31,
Interest rate products	$	(51	)	$	(51	)	$	(286	)	$	(623	)

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Credit-risk-related Contingent Features

The General Partner has agreements with some of its derivative counterparties that contain a provision where (1) if the General Partner defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the General Partner could also be declared in default on its derivative obligations; or (2) the General Partner could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the General Partner’s default on the indebtedness.

Certain of the General Partner’s agreements with its derivative counterparties contain provisions where if there is a change in the General Partner’s financial condition that materially changes the General Partner’s creditworthiness in an adverse manner, the General Partner may be required to fully collateralize its obligations under the derivative instrument. At March 31, 2015 and December 31, 2014, no cash collateral was posted or required to be posted by the General Partner or by a counterparty.

The General Partner also has an agreement with a derivative counterparty that incorporates the loan and financial covenant provisions of the General Partner’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with these covenant provisions would result in the General Partner being in default on any derivative instrument obligations covered by the agreement.

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MARCH 31, 2015

The General Partner has certain agreements with some of its derivative counterparties that contain a provision where in the event of default by the General Partner or the counterparty, the right of setoff may be exercised. Any amount payable to one party by the other party may be reduced by its setoff against any amounts payable by the other party. Events that give rise to default by either party may include, but are not limited to, the failure to pay or deliver payment under the derivative contract, the failure to comply with or perform under the derivative agreement, bankruptcy, a merger without assumption of the derivative agreement, or in a merger, a surviving entity’s creditworthiness is materially weaker than the original party to the derivative agreement.

As of March 31, 2015, the fair value of derivatives in a net liability position that were allocated to the Operating Partnership, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $774,000. As of March 31, 2015, the General Partner has not posted any collateral related to these agreements. If the General Partner had breached any of these provisions at March 31, 2015, it would have been required to settle its obligations under the agreements at their termination value of $774,000.

The General Partner has elected not to offset derivative positions in the consolidated financial statements. The table below presents the effect on the Operating Partnership’s financial position had the General Partner made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014:

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Received		Net Amount
March 31, 2015	$	17	$	—	$	17	$	—	$	—	$	17
December 31, 2014	$	39	$	—	$	39	$	—	$	—	$	39

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Posted		Net Amount
March 31, 2015	$	686	$	—	$	686	$	—	$	—	$	686
December 31, 2014	$	918	$	—	$	918	$	—	$	—	$	918

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

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MARCH 31, 2015

8. CAPITAL STRUCTURE

General Partnership Units

The General Partner has complete discretion to manage and control the operations and business of the Operating Partnership, which includes but is not limited to the acquisition and disposition of real property, construction of buildings and making capital improvements, and the borrowing of funds from outside lenders or UDR and its subsidiaries to finance such activities. The General Partner can generally authorize, issue, sell, redeem or purchase any OP Unit or securities of the Operating Partnership without the approval of the limited partners. The General Partner can also approve, with regard to the issuances of OP Units, the class or one or more series of classes, with designations, preferences, participating, optional or other special rights, powers and duties including rights, powers and duties senior to limited partnership interests without approval of any limited partners except holders of Class A Limited Partnership Units. There were 110,883 General Partnership units outstanding at March 31, 2015 and December 31, 2014, all of which were held by UDR.

Limited Partnership Units

As of March 31, 2015 and December 31, 2014, there were 183,167,815 limited partnership units outstanding, of which 1,873,332 were Class A Limited Partnership Units. UDR owned 174,002,876, or 95.0% of, and 174,002,342, or 95.0% of, OP Units outstanding at March 31, 2015 and December 31, 2014, respectively, of which 121,661 were Class A Limited Partnership Units. The remaining 9,164,939, or 5.0% of, and 9,165,473, or 5.0% of, OP Units outstanding, were held by non-affiliated partners at March 31, 2015 and December 31, 2014, respectively, of which 1,751,671 were Class A Limited Partnership Units.

Subject to the terms of the Operating Partnership Agreement, the limited partners have the right to require the Operating Partnership to redeem all or a portion of the OP Units held by the limited partner at a redemption price equal to and in the form of the Cash Amount (as defined in the Operating Partnership Agreement), provided that such OP Units have been outstanding for at least one year. UDR, as general partner of the Operating Partnership may, in its sole discretion, purchase the OP Units by paying to the limited partner either the Cash Amount or the REIT Share Amount (generally one share of common stock of UDR for each OP Unit), as defined in the Operating Partnership Agreement.

The non-affiliated limited partners’ capital is adjusted to redemption value at the end of each reporting period with the corresponding offset against UDR’s limited partner capital account based on the redemption rights noted above. The aggregate value upon redemption of the then-outstanding OP Units held by limited partners was $311.9 million and $282.5 million as of March 31, 2015 and December 31, 2014, respectively, based on the value of UDR’s common stock at each period end. A limited partner has no right to receive any distributions from the Operating Partnership on or after the date of redemption of its OP Units.

Class A Limited Partnership Units

Class A Limited Partnership Units have a cumulative, annual, non-compounded preferred return, which is equal to 8% based on a value of $16.61 per Class A Limited Partnership Unit.

Holders of the Class A Limited Partnership Units exclusively possess certain voting rights. The Operating Partnership may not do the following without approval of the holders of the Class A Limited Partnership Units: (i) increase the authorized or issued amount of Class A Limited Partnership Units, (ii) reclassify any other partnership interest into Class A Limited Partnership Units, (iii) create, authorize or issue any obligations or security convertible into or the right to purchase any Class A Limited Partnership units, (iv) enter into a merger or acquisition, or (v) amend or modify the Agreement of Limited Partnership of the Operating Partnership in a manner that adversely affects the relative rights, preferences or privileges of the Class A Limited Partnership Units.

Allocation of Profits and Losses

Profit of the Operating Partnership is allocated in the following order: (i) to the General Partner and the Limited Partners in proportion to and up to the amount of cash distributions made during the year, and (ii) to the General Partner and Limited Partners in accordance with their percentage interests. Losses and depreciation and amortization expenses, non-recourse liabilities are allocated to the General Partner and Limited Partners in accordance with their percentage interests. Losses allocated to the Limited Partners are capped to the extent that such an allocation would not cause a deficit in the Limited

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MARCH 31, 2015

Partners’ capital account. Such losses are, therefore, allocated to the General Partner. If any Partner’s capital balance were to fall into a deficit, any income and gains are allocated to each Partner sufficient to eliminate its negative capital balance.

9. COMMITMENTS AND CONTINGENCIES

Commitments

Real Estate Under Development

The following summarizes the Operating Partnership’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)	Expected Costs to Complete (unaudited)
Real estate communities — redevelopment	1	2,310	12,690

(a) Costs incurred to date include $515,000 of accruedfixed assets for redevelopment.

Contingencies

Litigation and Legal Matters

The Operating Partnership is subject to various legal proceedings and claims arising in the ordinary course of business. The Operating Partnership cannot determine the ultimate liability with respect to such legal proceedings and claims at this time. The General Partner believes that such liability, to the extent not provided for through insurance or otherwise, will not have a material adverse effect on the Operating Partnership’s financial condition, results of operations or cash flow.

10. REPORTABLE SEGMENTS

GAAP guidance requires that segment disclosures present the measure(s) used by the chief operating decision maker to decide how to allocate resources and for purposes of assessing such segments’ performance. The Operating Partnership has the same chief operating decision maker as that of its parent, the General Partner. The chief operating decision maker consists of several members of UDR’s executive management team who use several generally accepted industry financial measures to assess the performance of the business for our reportable operating segments.

The Operating Partnership owns and operates multifamily apartment communities throughout the United States that generate rental and other property related income through the leasing of apartment homes to a diverse base of tenants. The primary financial measures of the Operating Partnership’s apartment communities are rental income and net operating income (“NOI”), and are included in the chief operating decision maker’s assessment of the Operating Partnership’s performance on a consolidated basis. Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. NOI is defined as total revenues less direct property operating expenses. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense which is calculated as 2.75% of property revenue to cover the regional supervision and accounting costs related to consolidated property operations, and land rent. The chief operating decision maker of the General Partner utilizes NOI as the key measure of segment profit or loss.

The Operating Partnership’s two reportable segments are Same-Store Communities and Non-Mature Communities/Other:

• Same-Store Communities represent those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. A comparison of operating results from the prior year is meaningful as these communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

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MARCH 31, 2015

• Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Management of the General Partner evaluates the performance of each of the Operating Partnership’s apartment communities on a Same-Store Community and Non-Mature Community/Other basis, as well as individually and geographically. This is consistent with the aggregation criteria under GAAP as each of the apartment communities generally has similar economic characteristics, facilities, services, and tenants. Therefore, the Operating Partnership’s reportable segments have been aggregated by geography in a manner identical to that which is provided to the chief operating decision maker.

All revenues are from external customers and no single tenant or related group of tenants contributed 10% or more of the Operating Partnership’s total revenues during the three months endedMarch 31, 2015 and 2014.

The following table details rental income and NOI from continuing and discontinued operations for the Operating Partnership’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net income/(loss) attributable to OP unitholders in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	47,815		$	44,238
Mid-Atlantic Region	17,249			17,246
Southeast Region	11,679			11,131
Northeast Region	15,072			14,268
Southwest Region	6,737			6,553
Non-Mature Communities/Other	11,543			8,934
Total consolidated rental income	$	110,095		$	102,370
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	35,277		$	32,089
Mid-Atlantic Region	11,466			11,565
Southeast Region	7,710			7,457
Northeast Region	11,572			10,638
Southwest Region	4,213			4,217
Non-Mature Communities/Other	7,877			6,451
Total consolidated NOI	78,115			72,417
Reconciling items:
Property management	(3,027		)	(2,815		)
Other operating expenses	(1,490		)	(1,436		)
Real estate depreciation and amortization	(44,478		)	(44,271		)
General and administrative	(5,639		)	(6,970		)
Casualty-related recoveries/(charges), net	(593		)	(500		)
Interest expense	(10,771		)	(10,014		)
Gain/(loss) on sale of real estate owned	24,623			24,402
Net (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Net income/(loss) attributable to OP unitholders	$	36,346		$	30,533

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MARCH 31, 2015

(a) Same-store consists of 19,209 apartment homes.

The following table details the assets of the Operating Partnership’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets
Same-Store Communities
West Region	$	1,690,647		$	1,686,127
Mid-Atlantic Region	714,425			713,093
Southeast Region	334,282			333,428
Northeast Region	778,378			777,376
Southwest Region	229,627			228,996
Non-Mature Communities/Other	501,436			499,750
Total assets	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Total assets - net book value	2,801,282			2,835,467
Reconciling items:
Cash and cash equivalents	826			502
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total consolidated assets	$	2,843,381		$	2,878,284

Capital expenditures related to the Operating Partnership’s Same-Store Communities totaled $7.9 million and $3.9 million for the three months endedMarch 31, 2015 and 2014, respectively. Capital expenditures related to the Operating Partnership’s Non-Mature Communities/Other totaled $472,000 and $256,000 for the three months endedMarch 31, 2015 and 2014, respectively.

Markets included in the above geographic segments are as follows:

i. West Region — Orange County, San Francisco, Seattle, Los Angeles, Monterey Peninsula, Other Southern California, and Portland

ii. Mid-Atlantic Region — Metropolitan D.C. and Baltimore

iii. Southeast Region — Tampa, Nashville, and Other Florida

iv. Northeast Region — New York and Boston

v. Southwest Region — Dallas and Austin

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

This Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements include, without limitation, statements concerning property acquisitions and dispositions, development activity and capital expenditures, capital raising activities, rent growth, occupancy, and rental expense growth. Words such as “expects,” “anticipates,” “intends,” “plans,” “likely,” “will,” “believes,” “seeks,” “estimates,” and variations of such words and similar expressions are intended to identify such forward-looking statements. Such statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from the results of operations or plans expressed or implied by such forward-looking statements. Such factors include, among other things, unfavorable changes in the apartment market, changing economic conditions, the impact of inflation/deflation on rental rates and property operating expenses, expectations concerning availability of capital and the stabilization of the capital markets, the impact of competition and competitive pricing, acquisitions, developments and redevelopments not achieving anticipated results, delays in completing developments, redevelopments and lease-ups on schedule, expectations on job growth, home affordability and demand/supply ratio for multifamily housing, expectations concerning development and redevelopment activities, expectations on occupancy levels, expectations concerning the joint ventures with third parties, expectations that automation will help grow net operating income, and expectations on annualized net operating income.

The following factors, among others, could cause our future results to differ materially from those expressed in the forward-looking statements:

• general economic conditions;

• unfavorable changes in apartment market and economic conditions that could adversely affect occupancy levels and rental rates;

• the failure of acquisitions to achieve anticipated results;

• possible difficulty in selling apartment communities;

• competitive factors that may limit our ability to lease apartment homes or increase or maintain rents;

• insufficient cash flow that could affect our debt financing and create refinancing risk;

• failure to generate sufficient revenue, which could impair our debt service payments and distributions to stockholders;

• development and construction risks that may impact our profitability;

• potential damage from natural disasters, including hurricanes and other weather-related events, which could result in substantial costs to us;

• risks from extraordinary losses for which we may not have insurance or adequate reserves;

• uninsured losses due to insurance deductibles, self-insurance retention, uninsured claims or casualties, or losses in excess of applicable coverage;

• delays in completing developments and lease-ups on schedule;

• our failure to succeed in new markets;

• changing interest rates, which could increase interest costs and affect the market price of our securities;

• potential liability for environmental contamination, which could result in substantial costs to us;

• the imposition of federal taxes if we fail to qualify as a REIT under the Code in any taxable year;

54

• our internal control over financial reporting may not be considered effective which could result in a loss of investor confidence in our financial reports, and in turn have an adverse effect on our stock price; and

• changes in real estate laws, tax laws and other laws affecting our business.

A discussion of these and other factors affecting our business and prospects is set forth in Part II, Item 1A. Risk Factors. We encourage investors to review these risk factors.

Although we believe that the assumptions underlying the forward-looking statements contained herein are reasonable, any of the assumptions could be inaccurate, and therefore such statements included in this Report may not prove to be accurate. In light of the significant uncertainties inherent in the forward-looking statements included herein, the inclusion of such information should not be regarded as a representation by us or any other person that the results or conditions described in such statements or our objectives and plans will be achieved.

Forward-looking statements and such risks, uncertainties and other factors speak only as of the date of this Report, and we expressly disclaim any obligation or undertaking to update or revise any forward-looking statement contained herein, to reflect any change in our expectations with regard thereto, or any other change in events, conditions or circumstances on which any such statement is based, except to the extent otherwise required by law.

UDR, Inc.:

Business Overview

UDR, Inc. is a self-administered real estate investment trust, or REIT, that owns, acquires, renovates, develops, and manages apartment communities. We were formed in 1972 as a Virginia corporation. In September 2003, we changed our state of incorporation from Virginia to Maryland. Our subsidiaries include an operating partnership, United Dominion Realty, L.P., a Delaware limited partnership. Unless the context otherwise requires, all references in this Report to “we,” “us,” “our,” “the Company,” or “UDR” refer collectively to UDR, Inc., its subsidiaries and its consolidated joint ventures.

At March 31, 2015, our consolidated real estate portfolio included 138 communities in 10 states plus the District of Columbia totaling 39,956 apartment homes. In addition, we had an ownership interest in 28 communities with 6,696 apartment homes through unconsolidated operating communities. The Same-Store Community apartment home population for the three months endedMarch 31, 2015 was 36,063.

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The following table summarizes our market information by major geographic markets as and for the three months endedMarch 31, 2015.

								Three Months Ended
		March 31, 2015						March 31, 2015
	Number of Apartment Communities	Number of Apartment Homes	Percentage of Total Carrying Value		Total Carrying Value (in thousands)			Average Physical Occupancy		Monthly Income per Occupied Home (a)
Same-Store Communities
West Region
Orange County, CA	11	3,757	9.0	%	$	765,412		96.1	%	$	1,867
San Francisco, CA	9	2,108	7.0	%	591,573			97.3	%	2,890
Seattle, WA	9	1,727	5.3	%	451,156			97.3	%	1,791
Los Angeles, CA	4	1,225	5.2	%	440,616			95.0	%	2,393
Monterey Peninsula, CA	7	1,565	1.9	%	162,145			97.1	%	1,266
Other Southern California	4	875	1.7	%	141,868			96.5	%	1,608
Portland, OR	3	716	0.9	%	74,000			98.1	%	1,249
Mid-Atlantic Region
Metropolitan D.C.	14	4,568	12.0	%	1,019,287			96.7	%	1,893
Baltimore, MD	11	2,301	3.7	%	310,258			97.0	%	1,477
Richmond, VA	4	1,358	1.7	%	139,682			95.9	%	1,224
Norfolk, VA	4	846	0.6	%	54,166			94.6	%	1,063
Other Mid-Atlantic	1	168	0.2	%	12,996			94.7	%	1,010
Southeast Region
Tampa, FL	9	2,775	3.3	%	276,080			97.1	%	1,157
Orlando, FL	10	2,796	2.8	%	239,015			96.6	%	1,079
Nashville, TN	8	2,260	2.3	%	192,144			97.1	%	1,085
Other Florida	1	636	1.0	%	81,429			96.8	%	1,401
Northeast Region
New York, NY	3	1,205	8.9	%	754,033			97.9	%	3,712
Boston, MA	4	1,179	3.8	%	324,398			95.9	%	2,286
Southwest Region
Dallas, TX	8	2,725	3.5	%	293,679			97.1	%	1,162
Austin, TX	4	1,273	1.8	%	148,209			97.0	%	1,318
Total/Average Same-Store Communities	128	36,063	76.6	%	6,472,146			96.7	%	$	1,659
Non-Mature, Commercial Properties & Other	10	3,785	21.1	%	1,784,849
Total Real Estate Held for Investment	138	39,848	97.7	%	8,256,995
Real Estate Under Development (b)	—	108	2.3	%	196,653
Total Real Estate Owned	138	39,956	100.0	%	8,453,648
Total Accumulated Depreciation					(2,522,100		)
Total Real Estate Owned, Net of Accumulated Depreciation					$	5,931,548

(a) Monthly Income per Occupied Home represents total monthly revenues divided by the product of occupancy and the number of mature apartment homes.

(b) The Company is currently developing one wholly-owned community with 369 apartment homes, of which 108 have been completed.

We report in two segments: Same-Store Communities and Non-Mature Communities/Other.

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Our Same-Store Communities segment represents those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. These communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

Our Non-Mature Communities/Other segment represents those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Liquidity and Capital Resources

Liquidity is the ability to meet present and future financial obligations either through operating cash flows, sales of properties, borrowings under our credit agreements, and/or the issuance of debt and/or equity securities. Our primary source of liquidity is our cash flow from operations related to our portfolio of apartment homes and borrowings under our credit agreements. We routinely use our unsecured credit facility to temporarily fund certain investing and financing activities prior to arranging for longer-term financing or the issuance of equity or debt securities. During the past several years, proceeds from the sale of real estate have been used for both investing and financing activities as we repositioned our portfolio.

We expect to meet our short-term liquidity requirements generally through net cash provided by property operations and borrowings under our credit agreements. We expect to meet certain long-term liquidity requirements such as scheduled debt maturities, the repayment of financing on development activities, and potential property acquisitions, through secured and unsecured borrowings, the issuance of debt or equity securities, and/or the disposition of properties. We believe that our net cash provided by property operations and borrowings under our credit agreements will continue to be adequate to meet both operating requirements and the payment of dividends by the Company in accordance with REIT requirements. Likewise, the budgeted expenditures for improvements and renovations of certain properties are expected to be funded from property operations, borrowings under credit agreements, the issuance of debt or equity securities, and dispositions of properties.

We have a shelf registration statement filed with the Securities and Exchange Commission, or the SEC, which provides for the issuance of an indeterminate amount of common stock, preferred stock, guarantees of debt securities, warrants, subscription rights, purchase contracts and units to facilitate future financing activities in the public capital markets. Access to capital markets is dependent on market conditions at the time of issuance.

In April 2012, the Company entered into a new equity distribution agreement, which was amended in July 2014, under which the Company may offer and sell up to 20 million shares of its common stock, from time to time, to or through its sales agents. During the three months ended March 31, 2015, the Company sold 3,439,636 shares of common stock through this program for aggregate gross proceeds of approximately $111.0 million at a weighted average price per share of $32.29. Aggregate net proceeds from such sales, after deducting related expenses, including commissions paid to the sales agents of approximately $2.2 million, were approximately $108.8 million, which were primarily used to fund the Company'sdevelopment and redevelopment projects. As of March 31, 2015, we had 13.1 million shares of common stock available for future issuance under the April 2012 program.

Future Capital Needs

Future development and redevelopment expenditures may be funded through borrowings under unsecured or secured credit facilities, proceeds from the issuance of equity or debt securities, sales of properties, and, to a lesser extent, from cash flow provided by property operations. Acquisition activity in strategic markets may be funded through joint ventures, by the reinvestment of proceeds from the sale of properties, through the issuance of equity or debt securities, the issuance of operating partnership units and the assumption or placement of secured and/or unsecured debt.

As of March 31, 2015, we had approximately $194.8 million of secured debt maturing, inclusive of principal amortization, and no unsecured debt maturing, during the remainder of 2015.

We anticipate repaying that debt with cash flow from our operations, proceeds from debt or equity offerings, proceeds from dispositions of properties, or from borrowings under our credit agreements.

Critical Accounting Policies and Estimates and New Accounting Pronouncements

Our critical accounting policies are those having the most impact on the reporting of our financial condition and results and those requiring significant judgments and estimates. These policies include those related to (1) capital expenditures, (2) impairment of long-lived assets, (3) real estate investment properties, and (4) revenue recognition.

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Our critical accounting policies are described in more detail in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in UDR’s Annual Report on Form 10-K, filed with the SEC on February 24, 2015. There have been no significant changes in our critical accounting policies from those reported in our Form 10-K filed with the SEC on February 24, 2015. With respect to these critical accounting policies, we believe that the application of judgments and assessments is consistently applied and produces financial information that fairly depicts the results of operations for all periods presented.

Statements of Cash Flows

The following discussion explains the changes in Net cash provided by/(used in) operating activities, Net cash provided by/(used in) investing activities, and Net cash provided by/(used in) financing activities that are presented in our Consolidated Statements of Cash Flows for the three months endedMarch 31, 2015 and 2014.

Operating Activities

For the three months endedMarch 31, 2015, our Net cash provided by/(used in) operating activities was $96.0 million compared to $82.5 million for the comparable period in 2014. The increase in cash flow from operating activities is primarily due to improved operating income.

Investing Activities

For the three months endedMarch 31, 2015, Net cash provided by/(used in) investing activities was $(49.5) million compared to $(136.7) million for the comparable period in 2014. The change in investing activities was due to changes in the level of investment activities, which reflect our strategy as it relates to our investments in unconsolidated joint ventures and partnerships, acquisitions, dispositions, capital expenditures, and development activities, all of which are discussed in further detail throughout this Report.

Acquisitions

In February 2015, the Company acquired an office building in Highlands Ranch, Colorado, for total consideration of approximately $24.0 million, which was comprised of assumed debt. The Company's corporate offices, as well as other leased office space, are located in the acquired building. The building consists of approximately 120,000 square feet, of which UDR occupies approximately 44,000 square feet. All existing leases were assumed by the Company at the time of acquisition.

Dispositions

There were no dispositions of consolidated assets during the three months endedMarch 31, 2015.

Capital Expenditures

We capitalize those expenditures that materially enhance the value of an existing asset or substantially extend the useful life of an existing asset. Expenditures necessary to maintain an existing property in ordinary operating condition are expensed as incurred.

Total capital expenditures, which in aggregate include recurring capital expenditures and major renovations, of $18.9 million or $480 per stabilized home were spent on all of our communities, excluding development and commercial properties, for the three months endedMarch 31, 2015 as compared to $20.1 million or $499 per stabilized home for the comparable period in 2014.

The decrease in total capital expenditures was primarily due to:

• a decrease in major renovations of 54.5% or $6.4 million. Major renovations of $5.3 million or $135 per home were spent for the three months endedMarch 31, 2015 as compared to $11.7 million or $290 per home for the comparable period in 2014. Major renovations for the three months endedMarch 31, 2015 were primarily attributable to the redevelopment of two wholly-owned communities (708 of 1,067 apartment homes being redeveloped, 707 of which have been completed) with a budget of $113.0 million, of which we had $90.4 million of costs incurred at March 31, 2015.

This decrease was partially offset by:

• an increase of 247.4% or $4.5 million in revenue-enhancing capital expenditures, such as kitchen and bath remodels.

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The following table outlines capital expenditures and repair and maintenance costs for all of our communities, excluding real estate under development, non-stabilized communities, and commercial properties, for the three months endedMarch 31, 2015 and 2014:

	Three Months Ended March 31,						Per Home
	(dollars in thousands)						Three Months Ended March 31,
	2015		2014		% Change		2015		2014		% Change
Turnover capital expenditures	$	2,228	$	2,593	(14.1	)%	$	57	$	65	(12.3	)%
Asset preservation expenditures	5,015		4,008		25.1	%	128		99		29.3	%
Total recurring capital expenditures	7,243		6,601		9.7	%	185		164		12.8	%
Revenue enhancing improvements	6,306		1,815		247.4	%	160		45		255.6	%
Major renovations	5,315		11,694		(54.5	)%	135		290		(53.4	)%
Total capital expenditures	$	18,864	$	20,110	(6.2	)%	$	480	$	499	(3.8	)%
Repair and maintenance expense	$	7,311	$	7,523	(2.8	)%	$	186	$	187	(0.5	)%
Average number of homes (a)	39,343		40,300		(2.4	)%

(a) Average number of homes is calculated based on the number of stabilized homes outstanding at the end of each month.

We intend to continue to selectively add revenue enhancing improvements which we believe will provide a return on investment in excess of our cost of capital. Our objective in redeveloping a community is twofold: we aim to meaningfully grow rental rates while also achieving cap rate compression through asset quality improvement. Recurring capital expenditures during 2015 are projected to be approximately $1,150 per home.

Real Estate Under Development and Redevelopment

As of March 31, 2015, our development pipeline for one wholly-owned community totaled 369 homes, of which 108 have been completed, with a budget of $217.7 million, in which we have a carrying value of $196.7 million. The community is estimated to be completed during the second quarter of 2015.

As of March 31, 2015, the Company was redeveloping 708 apartment homes, 707 of which have been completed, at one wholly-owned community with 739 total apartment homes. This community is estimated to be completed during the second quarter of 2015. The Company was also redeveloping one community in San Francisco, California, which is expected to be completed in the first quarter of 2016. The redevelopment includes the renovation of building exteriors, corridors, and common area amenities and will not impact any apartment homes.

Unconsolidated Joint Ventures and Partnerships

The Company recognizes earnings or losses from our investments in unconsolidated joint ventures and partnerships consisting of our proportionate share of the net income or losses of the joint ventures and partnerships. In addition, we may earn fees for providing management services to the unconsolidated joint ventures and partnerships.

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The following table summarizes the Company’s investment in and advances to unconsolidated joint ventures and partnerships, net, which are accounted for under the equity method of accounting, as of March 31, 2015 and December 31, 2014(dollars in thousands):

Joint Venture	Location of Properties	Number of Properties	Number of Apartment Homes	Investment at					UDR’s Ownership Interest
		March 31, 2015	March 31, 2015	March 31, 2015		December 31, 2014			March 31, 2015			December 31, 2014
Operating and development:
UDR/MetLife I	Various	4 land parcels	—	$	13,473	$	13,306		15.7		%	15.7		%
UDR/MetLife II	Various	21 operating communities	4,642	429,635		431,277			50.0		%	50.0		%
Other UDR/MetLife Development Joint Ventures		1 operating community;
		4 development communities (a);
	Various	1 land parcels	1,437	145,681		134,939			50.6		%	50.6		%
UDR/MetLife Vitruvian Park®	Addison, TX	3 operating communities
		6 land parcels	1,130	78,669		80,302			50.0		%	50.0		%
UDR/KFH	Washington, D.C.	3 operating communities	660	20,435		21,596			30.0		%	30.0		%
Texas (b)	Texas	—	—	—		(25,901		)	—		%	20.0		%
Investment in and advances to unconsolidated joint ventures, net, before participating loan investment				687,893		655,519
	Location	Interest Rate	Years To Maturity	Investment at					Income From Participating Loan Investment for the Three Months Ended March 31,
				March 31, 2015		December 31, 2014			2015			2014
Participating loan investment:
Steele Creek	Denver, CO	6.5%	2.3	75,647		62,707			$	1,154		$	321
Total investment in and advances to unconsolidated joint ventures, net				$	763,540	$	718,226

(a) The number of apartment homes for the communities under development presented in the table above is based on the projected number of total homes. As of March 31, 2015, no apartment homes had been completed in Other UDR/MetLife Development Joint Ventures.

(b) In January 2015, the eight communities held by the Texas joint venture were sold, generating net proceeds to UDR of $43.5 million. The Company recorded promote and disposition fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale.

Subsequent to quarter end, the Company entered into a joint venture agreement with real estate private equity firm, The Wolff Company (“Wolff”), to invest $136 million for a 48 percent interest in a portfolio of five communities that are currently under construction. The transaction is expected to close in May 2015. The communities are located in three of the Company’s core, coastal markets: Metro Seattle, Los Angeles and Orange County, CA. UDR will earn a 6.5 percent preferred return on its $136 million investment through each individual community’s date of stabilization, defined as when a community reaches 80 percent occupancy for ninety consecutive days, while Wolff is allocated all income and expense during the pre-stabilization period. Upon stabilization, income and expense will be shared based on each partner’s ownership percentage. The Company will serve as property manager and be paid a management fee during the lease-up phase and subsequent operation of each of the communities.

The Company has a fixed price option to acquire Wolff’s remaining interest in each community beginning one year after completion. If the options are exercised for all five communities, the Company’s total price will be $597 million. In the event the Company does

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not exercise its options to purchase at least two communities, Wolff will be entitled to a 6.5 percent return on its implied equity in the communities not acquired. Wolff is providing certain guaranties and there will be construction loans on all five communities. Once completed the five communities will contain 1,533 homes.

As of March 31, 2015 and December 31, 2014, the Company had deferred fees and deferred profit from the sale of properties to joint ventures or partnerships of $5.6 million and $28.5 million, respectively, which will be recognized through earnings over the weighted average life of the related properties, upon the disposition of the properties to a third party, or upon completion of certain development obligations.

The Company may, in the future, make additional capital contributions to certain of our joint ventures and partnerships should additional capital contributions be necessary to fund acquisitions or operations.

We evaluate our investments in unconsolidated joint ventures and partnerships when events or changes in circumstances indicate that there may be an other-than-temporary decline in value. We consider various factors to determine if a decrease in the value of the investment is other-than-temporary. The Company did not recognize any other-than-temporary decreases in the value of its investments in unconsolidated joint ventures and partnerships during the three months endedMarch 31, 2015 and 2014.

Financing Activities

For the three months endedMarch 31, 2015, our Net cash provided by/(used in) financing activities was $(55.4) million compared to $39.8 million for the comparable period of 2014.

The following significant financing activities occurred during the three months endedMarch 31, 2015:

• repaid $325.2 million of 5.25% unsecured medium-term notes due January 2015;

• sold 3,439,636 shares of common stock for aggregate gross proceeds of approximately $111.0 million at a weighted average price per share of $32.29;

• net borrowings of $236.5 million under the Company’s $900.0 million unsecured revolving credit facility; and

• paid distributions of $66.7 million to our common stockholders.

Credit Facilities

As of March 31, 2015, the Company had three secured credit facilities with Fannie Mae with an aggregate commitment of $833.4 million at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $567.2 million of the outstanding balance was fixed and had a weighted average interest rate of 5.12% and the remaining balance of $266.2 million had a weighted average variable interest rate of 1.62%.

As of March 31, 2015, the Company has a $900 million unsecured revolving credit facility that matures in December 2017. The credit facility has a six month extension option and contains an accordion feature that allows us to increase the facility to $1.45 billion. Based on the Company’s current credit rating, the credit facility carries an interest rate equal to LIBOR plus a spread of 100 basis points and a facility fee of 15 basis points. As of March 31, 2015, we had $389.0 million outstanding borrowings under the credit facility, leaving $511.0 million of unused capacity (excluding $1.5 million of letters of credit at March 31, 2015).

The Fannie Mae credit facilities and the bank unsecured revolving credit facility are subject to customary financial covenants and limitations.

Derivative Instruments

As part of UDR’s overall interest rate risk management strategy, we use derivatives as a means to fix the interest rates of variable rate debt obligations or to hedge anticipated financing transactions. UDR’s derivative transactions used for interest rate risk management include interest rate swaps with indexes that relate to the pricing of specific debt instruments of UDR. We believe that we have appropriately controlled our interest rate risk through the use of derivative instruments to minimize any unintended effect on consolidated earnings.Derivative contracts did not have a material impact on the results of operations during the three months endedMarch 31, 2015 (see Note 10, Derivatives and Hedging Activity, in the Notes to the UDR Consolidated Financial Statements included in this Report).

Interest Rate Risk

We are exposed to interest rate risk associated with variable rate notes payable and maturing debt that has to be refinanced. We do not hold financial instruments for trading or other speculative purposes, but rather issue these financial instruments to finance our

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portfolio of real estate assets. Interest rate sensitivity is the relationship between changes in market interest rates and the fair value of market rate sensitive assets and liabilities. Our earnings are affected as changes in short-term interest rates impact our cost of variable rate debt and maturing fixed rate debt. We had $816.2 million in variable rate debt that is not subject to interest rate swap contracts as of March 31, 2015. If market interest rates for variable rate debt increased by 100 basis points, our interest expense for the three months endedMarch 31, 2015 would increase by $2.1 million based on the average balance outstanding during the period.

These amounts are determined by considering the impact of hypothetical interest rates on our borrowing cost. This analysis does not consider the effects of the adjusted level of overall economic activity that could exist in such an environment. Further, in the event of a change of such magnitude, management would likely take actions to further mitigate our exposure to the change. However, due to the uncertainty of the specific actions that would be taken and their possible effects, the sensitivity analysis assumes no change in our financial structure.

The Company also utilizes derivative financial instruments to manage interest rate risk and generally designates these financial instruments as cash flow hedges. See Note 10, Derivatives and Hedging Activities, in the Notes to the UDR Consolidated Financial Statements included in this Report for additional discussion of derivate instruments.

Funds from Operations, Funds from Operations as Adjusted, and Adjusted Funds from Operations

Funds from Operations

Funds from operations (“FFO”) is defined as net income (computed in accordance with GAAP), excluding impairment write-downs of depreciable real estate or of investments in non-consolidated investees that are driven by measurable decreases in the fair value of depreciable real estate held by the investee, gains or losses from sales of depreciable property, plus real estate depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures. This definition conforms with the National Association of Real Estate Investment Trust’s (“NAREIT”) definition issued in April 2002 and is comparable to FFO, diluted in the accompanying reconciliation. Historical cost accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values instead have historically risen or fallen with market conditions, many industry investors and analysts have considered the presentation of operating results for real estate companies that use historical cost accounting to be insufficient by themselves. Thus, NAREIT created FFO as a supplemental measure of a REIT’s operating performance. In the computation of diluted FFO, OP Units, unvested restricted stock, stock options, and the shares of Series E Cumulative Convertible Preferred Stock are dilutive; therefore, they are included in the diluted share count.

Activities of our taxable REIT subsidiary (“TRS”)include development and land entitlement. From time to time, we develop and subsequently sell a TRS property which results in a short-term use of funds that produces a profit that differs from the traditional long-term investment in real estate for REITs. We believe that the inclusion of these TRS gains in FFO is consistent with the standards established by NAREIT as the short-term investment is incidental to our main business. TRS gains on sales, net of taxes, are defined as net sales proceeds less a tax provision and the gross investment basis of the asset before accumulated depreciation.

We consider FFO a useful metric for investors as we use FFO in evaluating property acquisitions and our operating performance, and believe that FFO should be considered along with, but not as an alternative to, net income and cash flow as a measure of our activities in accordance with GAAP. FFO does not represent cash generated from operating activities in accordance with GAAP and is not necessarily indicative of funds available to fund our cash needs.

Funds from Operations as Adjusted

FFO as Adjusted is defined as FFO excluding the impact of acquisition-related costs and other non-comparable items including, but not limited to, prepayment costs/benefits associated with early debt retirement, gains on sales of marketable securities and TRS property, deferred tax valuation allowance increases and decreases, storm-related expenses and recoveries, severance costs and legal costs. Management believes that FFO as Adjusted is useful supplemental information regarding our operating performance as it provides a consistent comparison of our operating performance across time periods and allows investors to more easily compare our operating results with other REITs.

FFO as Adjusted is not intended to represent cash flow or liquidity for the period, and is only intended to provide an additional measure of our operating performance. We believe that net income attributable to UDR, Inc. is the most directly comparable GAAP financial measure to FFO as Adjusted. However, other REITs may use different methodologies for calculating FFO as Adjusted or similar FFO measures and, accordingly, our FFO as Adjusted may not always be comparable to FFO as Adjusted or similar FFO measures calculated by other REITs. FFO as Adjusted should not be considered as an alternative to net income (determined in

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accordance with GAAP) as an indication of financial performance, or as an alternative to cash flows from operating activities (determined in accordance with GAAP) as a measure of our liquidity.

Adjusted Funds from Operations

Adjusted FFO, or “AFFO”, is a non-GAAP financial measure that management uses as a supplemental measure of our performance. AFFO is defined as FFO as Adjusted less recurring capital expenditures that are necessary to help preserve the value of and maintain functionality at our communities. Therefore, management considers AFFO a useful supplemental performance metric for investors as it is more indicative of the Company’s operational performance than FFO or FFO as Adjusted.

AFFO is not intended to represent cash flow or liquidity for the period, and is only intended to provide an additional measure of our operating performance. We believe that net income attributable to UDR, Inc. is the most directly comparable GAAP financial measure to AFFO. Management believes that AFFO is a widely recognized measure of the operations of REITs, and presenting AFFO will enable investors to assess our performance in comparison to other REITs. However, other REITs may use different methodologies for calculating AFFO and, accordingly, our AFFO may not always be comparable to AFFO calculated by other REITs. AFFO should not be considered as an alternative to net income (determined in accordance with GAAP) as an indication of financial performance, or as an alternative to cash flows from operating activities (determined in accordance with GAAP) as a measure of our liquidity, nor is it indicative of funds available to fund our cash needs, including our ability to make distributions.

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The following table outlines our reconciliation ofNet income/(loss) attributable to UDR, Inc. to FFO, FFO as Adjusted, and AFFO for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Net income/(loss) attributable to UDR, Inc.	$	73,822		18,361
Distributions to preferred stockholders	(931		)	(931		)
Real estate depreciation and amortization, including discontinued operations	88,777			88,533
Net income/(loss) attributable to noncontrolling interests	2,595			651
Real estate depreciation and amortization on unconsolidated joint ventures	9,850			10,667
Net (gain)/loss on the sale of unconsolidated depreciable property	(59,073		)	—
Net (gain)/loss on the sale of depreciable property, excluding TRS	—			(23,174		)
Funds from operations (“FFO”), basic	$	115,040		$	94,107
Distribution to preferred stockholders — Series E (Convertible)	931			931
FFO, diluted	$	115,971		$	95,038
FFO per common share, basic	$	0.43		$	0.36
FFO per common share, diluted	$	0.43		$	0.36
Weighted average number of common shares and OP Units outstanding — basic	265,999			259,496
Weighted average number of common shares, OP Units, and common stock equivalents outstanding — diluted	270,863			264,177
Impact of adjustments to FFO:
Acquisition-related costs (including joint ventures)	$	199		$	102
Texas Joint Venture promote and disposition fee income	(9,633		)	—
Long-term incentive plan transition costs	854			—
(Gain)/loss on sale of land	—			(1,120		)
Casualty-related (recoveries)/charges, net	996			500
	$	(7,584	)	$	(518	)
FFO as Adjusted, diluted	$	108,387		$	94,520
FFO as Adjusted per common share, diluted	$	0.40		$	0.36
Recurring capital expenditures	(7,243		)	(6,601		)
AFFO	$	101,144		$	87,919
AFFO per common share, diluted	$	0.37		$	0.33

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The following table is our reconciliation of FFO share information to weighted average common shares outstanding, basic and diluted, reflected on the UDR Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014(shares in thousands):

	Three Months Ended
	March 31,
	2015		2014
Weighted average number of common shares and OP Units outstanding — basic	265,999		259,496
Weighted average number of OP Units outstanding	(9,165	)	(9,319	)
Weighted average number of common shares outstanding — basic per the Consolidated Statements of Operations	256,834		250,177
Weighted average number of common shares, OP Units, and common stock equivalents outstanding — diluted	270,863		264,177
Weighted average number of OP Units outstanding	(9,165	)	(9,319	)
Weighted average number of Series E preferred shares outstanding	(3,036	)	(3,036	)
Weighted average number of common shares outstanding — diluted per the Consolidated Statements of Operations	258,662		251,822

A presentation of cash flow metrics based on GAAP is as follows (dollars in thousands):

	Three Months Ended March 31,
	2015			2014
Net cash provided by/(used in) operating activities	$	96,018		$	82,521
Net cash provided by/(used in) investing activities	$	(49,538	)	$	(136,709	)
Net cash provided by/(used in) financing activities	$	(55,430	)	$	39,830

Results of Operations

The following discussion explains the changes in results of operations that are presented in our Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014, and includes the results of both continuing and discontinued operations for the periods presented.

Net Income/(Loss) Attributable to Common Stockholders

Net income/(loss) attributable to common stockholders was $72.9 million ($0.28 per diluted share) for the three months ended March 31, 2015 as compared to $17.4 million ($0.07 per diluted share) for the comparable period in the prior year. The increase resulted primarily from the following items, which are discussed in further detail elsewhere within this Report:

• income from unconsolidated entities of $59.2 million, which includes promote and fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale of the eight communities held by the Texas Joint Venture; and

• an increase in total property NOI primarily due to higher occupancy and higher revenue per occupied home, and NOI from the homes placed in service related to development and redevelopment projects completed in 2015 and 2014, partially offset by the disposition of communities in 2014.

This was partially offset by:

• a decrease in gain/(loss) on the sale of real estate owned by $24.3 million.

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Apartment Community Operations

Our net income results are primarily from NOI generated from the operation of our apartment communities.

The following table summarizes the operating performance of our total property NOI (which includes discontinued operations) for each of the periods presented (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014			% Change
Same-Store Communities:
Same-store rental income	$	173,480		$	165,083		5.1	%
Same-store operating expense (b)	(51,315		)	(50,064		)	2.5	%
Same-store NOI	122,165			115,019			6.2	%
Non-Mature Communities/Other NOI:
Acquired communities NOI	1,253			—			N/A
Sold or held for disposition communities NOI	—			4,606			(100.0	)%
Developed communities NOI	5,305			996			432.6	%
Redeveloped communities NOI	12,611			9,859			27.9	%
Commercial NOI and other	2,241			1,644			36.3	%
Total non-mature communities/other NOI	21,410			17,105			25.2	%
Total Property NOI	$	143,575		$	132,124		8.7	%

(a) Same-Store Community population consisted of 36,063 apartment homes.

(b) Excludes depreciation, amortization, and property management expenses.

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The following table is our reconciliation of total property NOI to Net income/(loss) attributable to UDR, Inc. as reflected, for both continuing and discontinued operations, for each of the periods presented (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total property NOI	$	143,575		$	132,124
Joint venture management and other fees	12,706			3,687
Property management	(5,694		)	(5,346		)
Other operating expenses	(1,766		)	(1,935		)
Real estate depreciation and amortization	(88,777		)	(88,533		)
General and administrative	(12,152		)	(11,994		)
Casualty-related recoveries/(charges), net	(996		)	(500		)
Other depreciation and amortization	(1,623		)	(1,080		)
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Tax benefit/(expense), net	425			3,329
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	$	73,822		$	18,361

Same-Store Communities

Our Same-Store Community properties (those acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015) consisted of 36,063 apartment homes and provided 85.1% and 87.1% of our total NOI for the three months endedMarch 31, 2015 and 2014, respectively.

Three Months Ended March 31, 2015 vs. Three Months Ended March 31, 2014

NOI for our Same-Store Community properties increased 6.2% or $7.1 million for the three months ended March 31, 2015 compared to the same period in 2014. The increase in property NOI was attributable to a 5.1% or $8.4 million increase in property rental income, which was partially offset by a 2.5% or $1.3 million increase in operating expenses. The increase in property income was primarily driven by a 4.0% or $6.3 million increase in rental rates and an 8.6% or $1.1 million increase in reimbursement and fee income. Physical occupancy increased 0.6% to 96.7% and total monthly income per occupied home increased 4.6% to $1,659.

The increase in operating expenses was primarily driven by a 3.2% or $559,000 increase in real estate taxes, and a 4.2% or $492,000 increase in personnel costs.

As a result of the percentage changes in property rental income and property operating expenses, the operating margin (property net operating income divided by property rental income) increased to 70.4% for the three months ended March 31, 2015 as compared to 69.7% for the comparable period in 2014.

Non-Mature Communities/Other

UDR’s Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

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Three Months Ended March 31, 2015 vs. Three Months Ended March 31, 2014

The remaining 14.9% or $21.4 million of our total NOI during the three months ended March 31, 2015 was generated from our Non-Mature Communities/Other. NOI from Non-Mature Communities/Otherincreased by 25.2% or $4.3 million for the three months ended March 31, 2015 as compared to the same period in 2014. The increase was primarily driven by an increase in NOI of $4.3 million and $2.8 million from developed and redeveloped communities, respectively, completed in 2014 and 2015 and an increase of $1.3 million from acquired communities, which was partially offset by a decrease in NOI of $4.6 million from communities sold in 2014 and 2015.

Real Estate Depreciation and Amortization

For the three months ended March 31, 2015, real estate depreciation and amortization on both continuing and discontinued operations increased 0.3% or $0.2 million as compared to the comparable period in 2014. The increase in depreciation and amortization for the three months ended March 31, 2015 was primarily due to homes delivered from our development and redevelopment communities, partially offset by a decrease from sold communities and fully depreciated assets.

General and Administrative

For the three months ended March 31, 2015, general and administrative expense increased 1.3% or $0.2 million as compared to the comparable period in 2014. The increase in general and administrative expense for the three months ended March 31, 2015 was primarily due to an increase in stock based compensation expense for the long-term incentive plan and salary and benefit increases.

Casualty-Related (Recoveries)/Charges, Net

During the three months ended March 31, 2015 and 2014, we recorded approximately $1.0 million and $500,000 in casualty-related losses caused by the severe snow storms on the east coast and one property damaged during an earthquake in California, respectively.

Interest Expense

For the three months ended March 31, 2015, interest expense decreased by 12.4% or $4.1 million as compared to the comparable period in 2014. The decrease in interest expense for the three months ended March 31, 2015 was primarily due to the payoff off the $325.2 million medium term note in January 2015, and the replacement of debt at lower rates.

Gain/(Loss) on Sale of Real Estate Owned, Net of Tax

During the three months ended March 31, 2015, the Company did not have any sales of consolidated real estate owned. During the three months ended March 31, 2014, the Company recognized gains (net of tax) of $24.3 million on the sale of one operating property and an adjacent parcel of land in San Diego, CA.

Inflation

We believe that the direct effects of inflation on our operations have been immaterial. While the impact of inflation primarily impacts our results through wage pressures, utilities and material costs, the majority of our leases are for a term of fourteen months or less, which generally enables us to compensate for any inflationary effects by increasing rents on our apartment homes. Although an extreme escalation in energy and food costs could have a negative impact on our residents and their ability to absorb rent increases, we do not believe this has had a material impact on our results for the three months endedMarch 31, 2015.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements that have, or are reasonably likely to have, a current or future effect on our financial condition, changes in financial condition, revenue or expenses, results of operations, liquidity, capital expenditures or capital resources that are material.

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United Dominion Realty, L.P.:

Business Overview

United Dominion Realty, L.P. (the “Operating Partnership” or “UDR, L.P.”) is a Delaware limited partnership formed in February 2004 and organized pursuant to the provisions of the Delaware Revised Uniform Limited Partnership Act. The Operating Partnership is the successor-in-interest to United Dominion Realty, L.P., a limited partnership formed under the laws of Virginia, which commenced operations on November 4, 1995. Our sole general partner is UDR, Inc., a Maryland corporation (“UDR” or the “General Partner”), which conducts a substantial amount of its business and holds a substantial amount of its assets through the Operating Partnership. At March 31, 2015, the Operating Partnership’s real estate portfolio included 68 communities located in nine states and the District of Columbia with a total of 20,809 apartment homes.

As of March 31, 2015, UDR owned 110,883 units of our general limited partnership interests and 174,002,876 units of our limited partnership interests (the “OP Units”), or approximately 95.0% of our outstanding OP Units. By virtue of its ownership of our OP Units and being our sole general partner, UDR has the ability to control all of the day-to-day operations of the Operating Partnership. Unless otherwise indicated or unless the context requires otherwise, all references in this section to the Operating Partnership or “we,” “us” or “our” refer to UDR, L.P. together with its consolidated subsidiaries. In this section, we refer to the General Partner together with its consolidated subsidiaries (including us) and the General Partner’s consolidated joint ventures as “UDR” or the “General Partner.”

UDR is a self-administered real estate investment trust, or REIT, that owns, acquires, renovates, develops, and manages apartment communities. The General Partner was formed in 1972 as a Virginia corporation and changed its state of incorporation from Virginia to Maryland in September 2003. At March 31, 2015, the General Partner’s consolidated real estate portfolio included 138 communities located in 10 states and the District of Columbia with a total of 39,956 apartment homes. In addition, the General Partner had an ownership interest in 28 communities with 6,696 completed apartment homes through unconsolidated operating communities.

The Operating Partnership’s same-store community apartment home population for the three months ended March 31, 2015 was 19,209.

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The following table summarizes our market information by major geographic markets as of March 31, 2015:

								Three Months Ended
		March 31, 2015						March 31, 2015
Same-Store Communities	Number of Apartment Communities	Number of Apartment Homes	Percentage of Total Carrying Value		Total Carrying Value (in thousands)			Average Physical Occupancy		Monthly Income per Occupied Home (a)
West Region
Orange County, CA	8	2,935	12.4	%	$	524,243		95.4	%	$	1,775
San Francisco, CA	8	1,881	11.7	%	498,430			96.7	%	2,719
Seattle, WA	5	932	5.0	%	213,754			97.3	%	1,605
Los Angeles, CA	2	344	2.5	%	108,159			94.7	%	2,237
Monterey Peninsula, CA	7	1,565	3.8	%	162,145			96.8	%	1,270
Other Southern California	3	635	2.6	%	109,915			94.7	%	1,721
Portland, OR	3	716	1.7	%	74,000			97.0	%	1,263
Mid-Atlantic Region
Metropolitan D.C.	7	2,378	13.3	%	562,186			96.2	%	1,909
Baltimore, MD	5	994	3.6	%	152,239			87.9	%	1,584
Southeast Region
Tampa, FL	3	1,154	2.8	%	117,658			95.9	%	1,240
Nashville, TN	6	1,612	3.2	%	135,194			97.0	%	1,060
Other Florida	1	636	1.9	%	81,429			95.2	%	1,424
Northeast Region
New York, NY	2	996	14.1	%	599,029			97.7	%	3,595
Boston, MA	2	833	4.2	%	179,350			95.9	%	1,909
Southwest Region
Dallas, TX	2	1,348	4.5	%	190,041			95.5	%	1,426
Austin, TX	1	250	0.9	%	39,586			97.5	%	1,681
Total/Average Same-Store Communities	65	19,209	88.2	%	3,747,358			95.8	%	$	1,785
Non-Mature, Commercial Properties & Other	3	1,600	11.8	%	501,437
Total Real Estate Owned	68	20,809	100.0	%	4,248,795
Total Accumulated Depreciation					(1,447,513		)
Total Real Estate Owned, Net of Accumulated Depreciation					$	2,801,282

(a) Monthly Income per Occupied Home represents total monthly revenues divided by the product of occupancy and the number of mature apartment homes.

We report in two segments: Same-Store Communities and Non-Mature Communities/Other.

Our Same-Store Communities segment represents those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. These communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the communities are not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

Our Non-Mature Communities/Other segment represents those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

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Liquidity and Capital Resources

Liquidity is the ability to meet present and future financial obligations either through operating cash flows, the sale of properties, and the issuance of debt. Both the coordination of asset and liability maturities and effective capital management are important to the maintenance of liquidity. The Operating Partnership’s primary source of liquidity is cash flow from operations as determined by rental rates, occupancy levels, and operating expenses related to our portfolio of apartment homes and borrowings allocated to us under the General Partner’s credit agreements. The General Partner will routinely use its unsecured credit facility to temporarily fund certain investing and financing activities prior to arranging for longer-term financing or the issuance of equity or debt securities. During the past several years, proceeds from the sale of real estate have been used for both investing and financing activities as we repositioned our portfolio.

We expect to meet our short-term liquidity requirements generally through net cash provided by operations and borrowings allocated to us under the General Partner’s credit agreements. We expect to meet certain long-term liquidity requirements such as scheduled debt maturities and potential property acquisitions through borrowings and the disposition of properties. We believe that our net cash provided by operations and borrowings will continue to be adequate to meet both operating requirements and the payment of distributions. Likewise, the budgeted expenditures for improvements and renovations of certain properties are expected to be funded from property operations, and borrowings allocated to us under the General Partner’s credit agreements.

Future Capital Needs

Future capital expenditures are expected to be funded with proceeds from the issuance of secured debt or unsecured debt, sales of properties, borrowings allocated to us under our General Partner’s credit agreements, and to a lesser extent, from cash flows provided by operating activities.

As of March 31, 2015, the Operating Partnership had approximately $190.9 million of principal payments on secured debt maturing during the remainder of 2015. We anticipate that we will repay that debt with operating cash flows or proceeds from borrowings allocated to us under our General Partner’s credit agreements. The repayment of debt will be recorded as an offset to the Advances (to)/from General Partner.

Critical Accounting Policies and Estimates and New Accounting Pronouncements

Our critical accounting policies are those having the most impact on the reporting of our financial condition and results and those requiring significant judgments and estimates. These policies include those related to (1) capital expenditures, (2) impairment of long-lived assets, (3) real estate investment properties, and (4) revenue recognition.

Our critical accounting policies are described in more detail in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Operating Partnership’s current Report on Form 10-K, filed with the SEC on February 24, 2015. There have been no significant changes in our critical accounting policies from those reported. With respect to these critical accounting policies, we believe that the application of judgments and assessments is consistently applied and produces financial information that fairly depicts the results of operations for all periods presented.

Effective January 1, 2014, the Operating Partnership prospectively adopted Accounting Standards Update (“ASU”) No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, for all communities not previously sold or classified as held for sale. ASU 2014-08 incorporates into the definition of a discontinued operation a requirement that a disposition represent a strategic shift in an entity’s operations, which resulted in UDR no longer classifying the sale of communities as a discontinued operation. See Note 2, Significant Accounting Policies, to the Operating Partnership’s Consolidated Financial Statements for more information on the new accounting pronouncement.

Statements of Cash Flows

The following discussion explains the changes in Net cash provided by/(used in) operating activities, Net cash provided by/(used in) investing activities, and Net cash provided by/(used in) financing activities that are presented in our Consolidated Statements of Cash Flows for the three months endedMarch 31, 2015 and 2014.

Operating Activities

For the three months endedMarch 31, 2015, Net cash provided by/(used in) operating activities was $57.5 million compared to $48.7 million for the comparable period in 2014. The increase in net cash flow from operating activities was primarily due to improved operating income.

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Investing Activities

For the three months endedMarch 31, 2015, Net cash provided by/(used in) investing activities was $(16.9) million compared to $28.9 million for the comparable period in 2014. The change was primarily due to an increase in development and redevelopment activities and a decrease in dispositions in the three months endedMarch 31, 2015 as compared to the comparable period in the prior year. Changes in the level of investment activities from period to period reflect our strategy as it relates to development activities, capital expenditures, and dispositions.

Disposition of Investments

During the three months endedMarch 31, 2014, the Operating Partnership sold one operating property and an adjacent parcel of land in San Diego, California for gross proceeds of $48.7 million, resulting in net proceeds of $47.9 million. The Operating Partnership recognized a $24.4 million gain, which is included in Gain/(loss) on sale of real estate ownedon the Consolidated Statements of Operations.

Real Estate Under Development and Redevelopment

At March 31, 2015, the Operating Partnership was redeveloping one community in San Francisco, California, which is expected to be completed in the first quarter of 2016. The redevelopment includes the renovation of building exteriors, corridors, and common area amenities and will not impact any apartment homes.

Financing Activities

For the three months endedMarch 31, 2015, our Net cash provided by/(used in) financing activities was $(40.3) million compared to $(78.6) million for the comparable period of 2014. The decrease in cash used in financing activities was primarily due to a decrease in advances to the General Partner.

Credit Facilities

As of March 31, 2015, an aggregate commitment of $526.5 million of the General Partner's secured credit facilities with Fannie Mae was allocated to the Operating Partnership based on the ownership of the assets securing the debt. The entire commitment was outstanding at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $333.7 million of the outstanding balance was fixed at a weighted average interest rate of 4.90% and the remaining balance of $192.8 million on these facilities had a weighted average variable interest rate of 1.85%.

The Operating Partnership is a guarantor on the General Partner’s unsecured revolving credit facility with an aggregate borrowing capacity of $900 million, $250 million of term notes due June 2018, $100 million of term notes due June 2018, $300 million of medium-term notes due June 2018, $300 million of medium-term notes due October 2020, $400 million of medium-term notes due January 2022, and $300 million of medium-term notes due July 2024. As of March 31, 2015 and December 31, 2014 there was $389.0 million and $152.5 million, respectively, of outstanding borrowings under the unsecured revolving credit facility.

The credit facilities are subject to customary financial covenants and limitations.

Derivative Instruments

As part of our General Partner’s overall interest rate risk management strategy, our General Partner uses derivatives as a means to fix the interest rates of variable rate debt obligations or to hedge anticipated financing transactions. Our General Partner’s derivative transactions used for interest rate risk management include interest rate swaps with indexes that relate to the pricing of specific debt instruments of our General Partner that are allocated to the Operating Partnership. The General Partner believes that we have appropriately controlled our interest rate risk through the use of derivative instruments (allocated to the Operating Partnership based on the General Partner’s underlying debt instruments allocated to the Operating Partnership) to minimize any unintended effect on consolidated earnings. Derivative contracts did not have a material impact on the results of operations during the three months endedMarch 31, 2015 (see Note 7, Derivatives and Hedging Activity, in the Notes to the Operating Partnership’s Consolidated Financial Statements included in this Report).

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Interest Rate Risk

We are exposed to interest rate risk associated with variable rate notes payable and maturing debt that has to be refinanced. We do not hold financial instruments for trading or other speculative purposes, but rather issue these financial instruments to finance our portfolio of real estate assets. Interest rate sensitivity is the relationship between changes in market interest rates and the fair value of market rate sensitive assets and liabilities. Our earnings are affected as changes in short-term interest rates impact our cost of variable rate debt and maturing fixed rate debt. We had $219.8 million in variable rate debt that is not subject to interest rate swap contracts as of March 31, 2015. If market interest rates for variable rate debt increased by 100 basis points, our interest expense for the three months endedMarch 31, 2015 would increase by $550,000 based on the average balance outstanding during the period.

These amounts are determined by considering the impact of hypothetical interest rates on our borrowing cost. These analyses do not consider the effects of the adjusted level of overall economic activity that could exist in such an environment. Further, in the event of a change of such magnitude, management would likely take actions to further mitigate our exposure to the change. However, due to the uncertainty of the specific actions that would be taken and their possible effects, the sensitivity analysis assumes no change in our financial structure.

The General Partner also utilizes derivative financial instruments allocated to the Operating Partnership to manage interest rate risk and generally designates these financial instruments as cash flow hedges. See Note 7, Derivatives and Hedging Activities, in the Notes to the Operating Partnership’s Consolidated Financial Statements for additional discussion of derivate instruments.

Results of Operations

The following discussion explains the changes in results of operations that are presented in our Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014, and includes the results of both continuing and discontinued operations for the periods presented.

Net Income/(Loss) Attributable to OP Unitholders

Net income attributable to OP unitholders was $36.3 million ($0.20 per diluted OP Unit) for the three months ended March 31, 2015 as compared to net income of $30.5 million ($0.17 per diluted OP Unit) for the comparable period in the prior year. The increase in net income attributable to OP unitholders resulted primarily from the following items, which are discussed in further detail elsewhere within this Report:

• an increase in total property NOI primarily due to higher occupancy and higher revenue per occupied home, and NOI from the homes placed in service related to development and redevelopment projects completed in 2015 and 2014.

Apartment Community Operations

Our net income results primarily from NOI generated from the operation of our apartment communities. The Operating Partnership defines NOI, which is a non-GAAP financial measure, as rental income less direct property rental expenses. Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense, which is calculated as 2.75% of property revenue to cover regional supervision and accounting costs related to consolidated property operations, and land rent.

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The following table summarizes the operating performance of our total portfolio (which includes discontinued operations) for the three months endedMarch 31, 2015 and 2014(dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014			% Change
Same-Store Communities:
Same-store rental income	$	98,553		$	93,436		5.5	%
Same-store operating expense (b)	(28,315		)	(27,470		)	3.1	%
Same-store NOI	70,238			65,966			6.5	%
Non-Mature Communities/Other NOI:
Sold and held for sale communities NOI	—			11			(100.0	)%
Developed communities NOI	339			(6		)	5,750.0	%
Redeveloped communities NOI	6,524			5,042			29.4	%
Commercial NOI and other	1,014			1,404			(27.8	)%
Total non-mature communities/other NOI	7,877			6,451			22.1	%
Total Property NOI	$	78,115		$	72,417		7.9	%

(a) Same-store consists of 19,209 apartment homes.

(b) Excludes depreciation, amortization, and property management expenses.

The following table is our reconciliation of total property NOI to Net income/(loss) attributable to OP unitholdersas reflected, for both continuing and discontinued operations, for the three months endedMarch 31, 2015 and 2014(dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total property NOI	$	78,115		$	72,417
Property management	(3,027		)	(2,815		)
Other operating expenses	(1,490		)	(1,436		)
Real estate depreciation and amortization	(44,478		)	(44,271		)
General and administrative	(5,639		)	(6,970		)
Casualty-related recoveries/(charges), net	(593		)	(500		)
Interest expense	(10,771		)	(10,014		)
Gain/(loss) on sale of real estate owned	24,623			24,402
Net (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Net income/(loss) attributable to OP unitholders	$	36,346		$	30,533

Same-Store Communities

Our Same-Store Community properties (those acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015) consisted of 19,209 apartment homes and provided 89.9% of our total NOI for the three months endedMarch 31, 2015.

Three Months Ended March 31, 2015 vs. Three Months Ended March 31, 2014

NOI for our Same-Store Community properties increased6.5% or $4.3 million for the three months ended March 31, 2015 compared to the same period in 2014. The increase in property NOI was primarily attributable to a 5.5% or $5.1 millionincrease in property rental income, which was partially offset by a 3.1% or $845,000increase in operating expenses. The increase in revenues was primarily driven by a 4.5% or $4.0 millionincrease in rental rates, a 13.2% or $440,000decrease in

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vacancy loss and bad debt, and a 3.8% or $265,000increase in fee and reimbursement income. Physical occupancy increased0.4% to 95.8% and total income per occupied home increased5.1% to $1,785 for the three months ended March 31, 2015 compared to the same period in 2014.

The increase in property operating expenses was primarily driven by a 6.2% or $399,000increase in personnel cost, and a 5.0% or $471,000increase in real estate tax expense.

As a result of the percentage changes in property rental income and property operating expenses, the operating margin (property net operating income divided by property rental income) increased to 71.3% for the three months ended March 31, 2015 as compared to 70.6% for the comparable period in 2014.

Non-Mature Communities/Other

The Operating Partnership’s Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Three Months Ended March 31, 2015 vs. Three Months Ended March 31, 2014

The remaining 10.1% or $7.9 million of our total NOI during the three months ended March 31, 2015 was generated from our Non-Mature Communities. NOI from Non-Mature Communities/Other increased 22.1% or $1.4 million for the three months ended March 31, 2015 compared to the same period in 2014. The increase was primarily driven by a increase in NOI of $1.5 million from redeveloped properties, which was partially offset by a decrease from sold, commercial, and other properties NOI of $401,000 from redeveloped properties.

Real Estate Depreciation and Amortization

For the three months ended March 31, 2015, real estate depreciation and amortization on both continuing and discontinued operations increased 0.5% or $207,000 as compared to the comparable period in 2013. The increase in depreciation and amortization for the three months ended March 31, 2015 was primarily due to homes delivered from our development and redevelopment communities, partially offset by a decrease from sold communities and fully depreciated assets.

General and Administrative

For the three months ended March 31, 2015, general and administrative expense decreased 19.1% or $1.3 million as compared to the comparable period in 2014. The decrease in general and administrative expense for the three months ended March 31, 2015 was primarily due to lower general and administrative expenses of the Operating Partnership.

Casualty-Related (Recoveries)/Charges, Net

During the three months endedMarch 31, 2015, we recorded a $593,000 casualty-related loss for one property damaged during an earthquake in California.

Interest Expense

For the three months endedMarch 31, 2015, interest expense increased by 7.6% or $757,000 as compared to the comparable period in 2014. The increase in interest expense for the three months endedMarch 31, 2015 was primarily due to lower portion of interest capitalized in 2015 as a result of completed developments.

Gain/(Loss) on Sale of Real Estate Owned

During the three months ended March 31, 2015, the Company did not have any sales of consolidated real estate owned. During the three months ended March 31, 2014, the Operating Partnership recognized $24.4 million of gains on the sale of one community and an adjacent parcel of land in San Diego, CA.

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Inflation

We believe that the direct effects of inflation on our operations have been immaterial. While the impact of inflation primarily impacts our results through wage pressures, utilities and material costs, substantially all of our leases are for a term of one year or less, which generally enables us to compensate for any inflationary effects by increasing rents on our apartment homes. Although an extreme escalation in energy and food costs could have a negative impact on our residents and their ability to absorb rent increases, we do not believe this has had a material impact on our results for the three months endedMarch 31, 2015.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements that have, or are reasonably likely to have, a current or future effect on our financial condition, changes in financial condition, revenue or expenses, results of operations, liquidity, capital expenditures or capital resources that are material.

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Item 3.        QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company and the Operating Partnership are exposed to interest rate changes associated with our unsecured credit facility and other variable rate debt as well as refinancing risk on our fixed rate debt. The Company’s and the Operating Partnership’s involvement with derivative financial instruments is limited and we do not expect to use them for trading or other speculative purposes. The Company and the Operating Partnership use derivative instruments solely to manage their exposure to interest rates.

See our Annual Report on Form 10-K for the year ended December 31, 2014 under the heading “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” for a more complete discussion of our interest rate sensitive assets and liabilities. As of March 31, 2015, our market risk has not changed materially from the amounts reported in our Annual Report on Form 10-K for the year ended December 31, 2014.

Item 4.        CONTROLS AND PROCEDURES

The disclosure controls and procedures of the Company and the Operating Partnership are designed with the objective of ensuring that information required to be disclosed in our reports filed under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Our disclosure controls and procedures are also designed to ensure that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

It should be noted that the design of any system of controls is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote. As a result, our disclosure controls and procedures are designed to provide reasonable assurance that such disclosure controls and procedures will meet their objectives.

As of March 31, 2015, we carried out an evaluation, under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer of the Company, of the effectiveness of the design and operation of the disclosure controls and procedures of the Company and the Operating Partnership. Based on this evaluation, the Chief Executive Officer and Chief Financial Officer of the Company concluded that the disclosure controls and procedures of the Company and the Operating Partnership are effective at the reasonable assurance level described above.

There have not been any changes in either the Company’s or the Operating Partnership’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934) during the first fiscal quarter to which this report relates that materially affected, or are reasonably likely to materially affect, the internal control over financial reporting of either the Company or the Operating Partnership.

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PART II — OTHER INFORMATION

Item 1.        LEGAL PROCEEDINGS

The Company is a party to various claims and routine litigation arising in the ordinary course of business. We do not believe that the results of any such claims and litigation, individually or in the aggregate, will have a material adverse effect on our business, financial position or results of operations.

Item 1A. RISK FACTORS

There are many factors that affect the business and the results of operations of the Company and the Operating Partnership, some of which are beyond the control of the Company and the Operating Partnership. The following is a description of important factors that may cause the actual results of operations of the Company and the Operating Partnership in future periods to differ materially from those currently expected or discussed in forward-looking statements set forth in this Report relating to our financial results, operations and business prospects. Forward-looking statements and such risks, uncertainties and other factors speak only as of the date of this Report, and we expressly disclaim any obligation or undertaking to update or revise any forward-looking statement contained herein, to reflect any change in our expectations with regard thereto, or any other change in events, conditions or circumstances on which any such statement is based, except to the extent otherwise required by law.

Risks Related to Our Real Estate Investments and Our Operations

Unfavorable Apartment Market and Economic Conditions Could Adversely Affect Occupancy Levels, Rental Revenues and the Value of Our Real Estate Assets. Unfavorable market conditions in the areas in which we operate and unfavorable economic conditions generally may significantly affect our occupancy levels, our rental rates and collections, the value of the properties and our ability to strategically acquire or dispose of apartment communities on economically favorable terms. Our ability to lease our properties at favorable rates is adversely affected by the increase in supply in the multifamily and other rental markets and is dependent upon the overall level in the economy, which is adversely affected by, among other things, job losses and unemployment levels, recession, personal debt levels, a downturn in the housing market, stock market volatility and uncertainty about the future. Some of our major expenses, including mortgage payments, generally do not decline when related rents decline. We would expect that declines in our occupancy levels, rental revenues and/or the values of our apartment communities would cause us to have less cash available to pay our indebtedness and to distribute to UDR’s stockholders, which could adversely affect our financial condition and the market value of our securities. Factors that may affect our occupancy levels, our rental revenues, and/or the value of our properties include the following, among others:

• downturns in the national, regional and local economic conditions, particularly increases in unemployment;

• declines in mortgage interest rates, making alternative housing more affordable;

• government or builder incentives which enable first time homebuyers to put little or no money down, making alternative housing options more attractive;

• local real estate market conditions, including oversupply of, or reduced demand for, apartment homes;

• declines in the financial condition of our tenants, which may make it more difficult for us to collect rents from some tenants;

• changes in market rental rates;

• our ability to renew leases or re-lease space on favorable terms;

• the timing and costs associated with property improvements, repairs or renovations;

• declines in household formation; and

• rent control or stabilization laws, or other laws regulating rental housing, which could prevent us from raising rents to offset increases in operating costs.

We May Be Unable to Renew Leases or Relet Apartment Units as Leases Expire. When our residents decide to leave our apartments, whether because they decide not to renew their leases or they leave prior to their lease expiration date, we may not

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be able to relet their apartment units. Even if the residents do renew or we can relet the apartment units, the terms of renewal or reletting may be less favorable than current lease terms. If we are unable to promptly renew the leases or relet the apartment units, or if the rental rates upon renewal or reletting are significantly lower than expected rates, then our results of operations and financial condition may be adversely affected. If residents do not experience increases in their income, we may be unable to increase rent and/or delinquencies may increase.

Substantial International, National and Local Government Spending and Increasing Deficits May Adversely Impact Our Business, Financial Condition and Results of Operations. The values of, and the cash flows from, the properties we own are affected by developments in global, national and local economies. As a result of the most recent recession and the significant government interventions, federal, state and local governments have incurred record deficits and assumed or guaranteed liabilities of private financial institutions or other private entities. These increased budget deficits and the weakened financial condition of federal, state and local governments may lead to reduced governmental spending, tax increases, public sector job losses, increased interest rates, currency devaluations or other adverse economic events, which may directly or indirectly adversely affect our business, financial condition and results of operations.

Risk of Inflation/Deflation. Substantial inflationary or deflationary pressures could have a negative effect on rental rates and property operating expenses. The general risk of inflation is that interest on our debt and general and administrative expenses increase at a rate faster than increases in our rental rates, which could adversely affect our results of operations, cash flow and ability to make distributions to UDR’s stockholders. The predominant effects of deflation include high unemployment and credit contraction. Restricted lending practices could impact our ability to obtain financing or refinancing for our properties.

We Are Subject to Certain Risks Associated with Selling Apartment Communities, Which Could Limit Our Operational and Financial Flexibility. We periodically dispose of apartment communities that no longer meet our strategic objectives, but adverse market conditions may make it difficult to sell apartment communities like the ones we own. We cannot predict whether we will be able to sell any property for the price or on the terms we set, or whether any price or other terms offered by a prospective purchaser would be acceptable to us. We also cannot predict the length of time needed to find a willing purchaser and to close the sale of a property. Furthermore, we may be required to expend funds to correct defects or to make improvements before a property can be sold. These conditions may limit our ability to dispose of properties and to change our portfolio promptly in order to meet our strategic objectives, which may in turn have a material adverse effect on our financial condition and the market value of our securities. We are also subject to the following risks in connection with sales of our apartment communities:

• a significant portion of the proceeds from our overall property sales may be held by intermediaries in order for some sales to qualify as like-kind exchanges under Section 1031 of the Internal Revenue Code of 1986, as amended, or the “Code,” so that any related capital gain can be deferred for federal income tax purposes. As a result, we may not have immediate access to all of the cash proceeds generated from our property sales; and

• federal tax laws limit our ability to profit on the sale of communities that we have owned for less than two years, and this limitation may prevent us from selling communities when market conditions are favorable.

Competition Could Limit Our Ability to Lease Apartment Homes or Increase or Maintain Rents. Our apartment communities compete with numerous housing alternatives in attracting residents, including other apartment communities, condominiums and single-family rental homes, as well as owner occupied single-and multi-family homes. Competitive housing in a particular area could adversely affect our ability to lease apartment homes and increase or maintain rents, which could materially adversely affect our results of operations and financial condition.

We May Not Realize the Anticipated Benefits of Past or Future Acquisitions, and the Failure to Integrate Acquired Communities and New Personnel Successfully Could Create Inefficiencies. We have selectively acquired in the past, and if presented with attractive opportunities we intend to selectively acquire in the future, apartment communities that meet our investment criteria. Our acquisition activities and their success are subject to the following risks:

• we may be unable to obtain financing for acquisitions on favorable terms or at all;

• even if we are able to finance the acquisition, cash flow from the acquisition may be insufficient to meet our required principal and interest payments on the acquisition;

• even if we enter into an acquisition agreement for an apartment community, we may be unable to complete the acquisition after incurring certain acquisition-related costs;

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• we may incur significant costs and divert management attention in connection with the evaluation and negotiation of potential acquisitions, including potential acquisitions that we are subsequently unable to complete;

• when we acquire an apartment community, we may invest additional amounts in it with the intention of increasing profitability, and these additional investments may not produce the anticipated improvements in profitability;

• the expected occupancy rates and rental rates may differ from actual results; and

• we may be unable to quickly and efficiently integrate acquired apartment communities and new personnel into our existing operations, and the failure to successfully integrate such apartment communities or personnel will result in inefficiencies that could adversely affect our expected return on our investments and our overall profitability.

Competition Could Adversely Affect Our Ability to Acquire Properties. In the past, other real estate investors, including insurance companies, pension and investment funds, developer partnerships, investment companies and other public and private apartment REITs, have competed with us to acquire existing properties and to develop new properties, and such competition in the future may make it more difficult for us to pursue attractive investment opportunities on favorable terms, which could adversely affect our ability to grow or acquire properties profitably or with attractive returns.

Development and Construction Risks Could Impact Our Profitability. In the past we have selectively pursued the development and construction of apartment communities, and we intend to do so in the future as appropriate opportunities arise. Development activities have been, and in the future may be, conducted through wholly-owned affiliated companies or through joint ventures with unaffiliated parties. Our development and construction activities are subject to the following risks:

• we may be unable to obtain construction financing for development activities under favorable terms, including but not limited to interest rates, maturity dates and/or loan to value ratios, or at all which could cause us to delay or even abandon potential developments;

• we may be unable to obtain, or face delays in obtaining, necessary zoning, land-use, building, occupancy and other required governmental permits and authorizations, which could result in increased development costs, could delay initial occupancy dates for all or a portion of a development community, and could require us to abandon our activities entirely with respect to a project for which we are unable to obtain permits or authorizations;

• yields may be less than anticipated as a result of delays in completing projects, costs that exceed budget and/or higher than expected concessions for lease up and lower rents than expected;

• if we are unable to find joint venture partners to help fund the development of a community or otherwise obtain acceptable financing for the developments, our development capacity may be limited;

• we may abandon development opportunities that we have already begun to explore, and we may fail to recover expenses already incurred in connection with exploring such opportunities;

• we may be unable to complete construction and lease-up of a community on schedule, or incur development or construction costs that exceed our original estimates, and we may be unable to charge rents that would compensate for any increase in such costs;

• occupancy rates and rents at a newly developed community may fluctuate depending on a number of factors, including market and economic conditions, preventing us from meeting our profitability goals for that community; and

• when we sell to third parties communities or properties that we developed or renovated, we may be subject to warranty or construction defect claims that are uninsured or exceed the limits of our insurance.

In some cases in the past, the costs of upgrading acquired communities exceeded our original estimates. We may experience similar cost increases in the future. Our inability to charge rents that will be sufficient to offset the effects of any increases in these costs may impair our profitability.

Bankruptcy or Defaults of Our Counterparties Could Adversely Affect Our Performance. We have relationships with and, from time to time, we execute transactions with or receive services from many counterparties, such as general contractors engaged in connection with our development activities. As a result, bankruptcies or defaults by these counterparties could result in services not being provided, projects not being completed on time, or on budget, or at all, or volatility in the financial markets and economic weakness could affect the counterparties’ ability to complete transactions with us as intended, both of which could result in disruptions to our operations that may adversely affect our business and results of operations.

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Property Ownership Through Joint Ventures May Limit Our Ability to Act Exclusively in Our Interest. We have in the past and may in the future develop and/or acquire properties in joint ventures with other persons or entities when we believe circumstances warrant the use of such structures. We currently have 14 active joint ventures and partnerships, excluding our participating loan investment, with a total equity investment of $687.9 million. We could become engaged in a dispute with one or more of our joint venture partners which might affect our ability to operate a jointly-owned property. Moreover, joint venture partners may have business, economic or other objectives that are inconsistent with our objectives, including objectives that relate to the appropriate timing and terms of any sale or refinancing of a property. In some instances, joint venture partners may have competing interests in our markets that could create conflicts of interest. Also, our joint venture partners might refuse to make capital contributions when due and we may be responsible to our partners for indemnifiable losses. In general, we and our partners may each have the right to trigger a buy-sell arrangement, which could cause us to sell our interest, or acquire our partners’ interest, at a time when we otherwise would not have initiated such a transaction and may result in the valuation of our interest in the joint venture (if we are the seller) or of the other partner’s interest in the joint venture (if we are the buyer) at levels which may not be representative of the valuation that would result from an arm’s length marketing process.

We are also subject to risk in cases where an institutional owner is our joint venture partner, including (i) a deadlock if we and our joint venture partner are unable to agree upon certain major and other decisions, (ii) the limitation of our ability to liquidate our position in the joint venture without the consent of the other joint venture partner, and (iii) the requirement to provide guarantees in favor of lenders with respect to the indebtedness of the joint venture.

We Could Incur Significant Insurance Costs and Some Potential Losses May Not Be Adequately Covered by Insurance. We have a comprehensive insurance program covering our property and operating activities with limits of liability customary within the multi-family industry. We believe the policy specifications and insured limits of these policies are adequate and appropriate. There are, however, certain types of extraordinary losses which may not be adequately covered under our insurance program. In addition, we will sustain losses due to insurance deductibles, self-insured retention, uninsured claims or casualties, or losses in excess of applicable coverage.

If an uninsured loss or a loss in excess of insured limits occur, we could lose all or a portion of the capital we have invested in a property, as well as the anticipated future revenue from the property. In such an event, we might nevertheless remain obligated for any mortgage debt or other financial obligations related to the property. Material losses in excess of insurance proceeds may occur in the future. If one or more of our significant properties were to experience a catastrophic loss, it could seriously disrupt our operations, delay revenue and result in large expenses to repair or rebuild the property. Such events could adversely affect our cash flow and ability to make distributions to UDR’s stockholders.

As a result of our substantial real estate holdings, the cost of insuring our apartment communities is a significant component of expense. Insurance premiums are subject to significant increases and fluctuations, which are generally outside of our control. We insure our properties with insurance companies that we believe have a good rating at the time our policies are put into effect. The financial condition of one or more of our insurance companies that we hold policies with may be negatively impacted, which could result in their inability to pay on future insurance claims. Their inability to pay future claims may have a negative impact on our financial results. In addition, the failure of one or more insurance companies may increase the costs to renew our insurance policies or increase the cost of insuring additional properties and recently developed or redeveloped properties.

Failure to Succeed in New Markets May Limit Our Growth. We have acquired in the past, and we may acquire in the future if appropriate opportunities arise, apartment communities that are outside of our existing markets. Entering into new markets may expose us to a variety of risks, and we may not be able to operate successfully in new markets. These risks include, among others:

• inability to accurately evaluate local apartment market conditions and local economies;

• inability to hire and retain key personnel;

• lack of familiarity with local governmental and permitting procedures; and

• inability to achieve budgeted financial results.

Potential Liability for Environmental Contamination Could Result in Substantial Costs. Under various federal, state and local environmental laws, as a current or former owner or operator of real estate, we could be required to investigate and remediate the effects of contamination of currently or formerly owned real estate by hazardous or toxic substances, often regardless of our knowledge of or responsibility for the contamination and solely by virtue of our current or former ownership or operation of the real estate. In addition, we could be held liable to a governmental authority or to third parties for property

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damage and for investigation and clean-up costs incurred in connection with the contamination. These costs could be substantial, and in many cases environmental laws create liens in favor of governmental authorities to secure their payment. The presence of such substances or a failure to properly remediate any resulting contamination could materially and adversely affect our ability to borrow against, sell or rent an affected property.

In addition, our properties are subject to various federal, state and local environmental, health and safety laws, including laws governing the management of wastes and underground and aboveground storage tanks. Noncompliance with these environmental, health and safety laws could subject us to liability. Changes in laws could increase the potential costs of compliance with environmental laws, health and safety laws or increase liability for noncompliance. This may result in significant unanticipated expenditures or may otherwise materially and adversely affect our operations.

As the owner or operator of real property, we may also incur liability based on various building conditions. For example, buildings and other structures on properties that we currently own or operate or those we acquire or operate in the future contain, may contain, or may have contained, asbestos-containing material, or ACM. Environmental, health and safety laws require that ACM be properly managed and maintained and may impose fines or penalties on owners, operators or employers for non-compliance with those requirements.

These requirements include special precautions, such as removal, abatement or air monitoring, if ACM would be disturbed during maintenance, renovation or demolition of a building, potentially resulting in substantial costs. In addition, we may be subject to liability for personal injury or property damage sustained as a result of exposure to ACM or releases of ACM into the environment.

We cannot assure you that costs or liabilities incurred as a result of environmental issues will not affect our ability to make distributions to our stockholders, or that such costs or liabilities will not have a material adverse effect on our financial condition and results of operations.

Our Properties May Contain or Develop Harmful Mold or Suffer from Other Indoor Air Quality Issues, Which Could Lead to Liability for Adverse Health Effects or Property Damage or Cost for Remediation. When excessive moisture accumulates in buildings or on building materials, mold growth may occur, particularly if the moisture problem remains undiscovered or is not addressed over a period of time. Some molds may produce airborne toxins or irritants. Indoor air quality issues can also stem from inadequate ventilation, chemical contamination from indoor or outdoor sources, and other biological contaminants such as pollen, viruses and bacteria. Indoor exposure to airborne toxins or irritants can be alleged to cause a variety of adverse health effects and symptoms, including allergic or other reactions. As a result, the presence of significant mold or other airborne contaminants at any of our properties could require us to undertake a costly remediation program to contain or remove the mold or other airborne contaminants or to increase ventilation, which could adversely affect our results of operations and cash flow. In addition, the presence of significant mold or other airborne contaminants could expose us to liability from our tenants or others if property damage or personal injury occurs.

Compliance or Failure to Comply with the Americans with Disabilities Act of 1990 or Other Safety Regulations and Requirements Could Result in Substantial Costs. The Americans with Disabilities Act generally requires that public buildings, including our properties, be made accessible to disabled persons. Noncompliance could result in the imposition of fines by the federal government or the award of damages to private litigants. From time to time claims may be asserted against us with respect to some of our properties under the Americans with Disabilities Act. If, under the Americans with Disabilities Act, we are required to make substantial alterations and capital expenditures in one or more of our properties, including the removal of access barriers, it could adversely affect our financial condition and results of operations.

Our properties are subject to various federal, state and local regulatory requirements, such as state and local fire and life safety requirements. If we fail to comply with these requirements, we could incur fines or private damage awards. We do not know whether existing requirements will change or whether compliance with future requirements will require significant unanticipated expenditures that will affect our cash flow and results of operations.

Compliance with or Changes in Real Estate Tax and Other Laws Could Adversely Affect Our Funds from Operations and Our Ability to Make Distributions to Stockholders. Generally we do not directly pass through costs resulting from compliance with or changes in real estate tax laws to residential property tenants. We also do not generally pass through increases in income, service or other taxes, to tenants under leases. These costs may adversely affect net operating income and the ability to make distributions to stockholders. Similarly, compliance with or changes in (i) laws increasing the potential liability for environmental conditions existing on properties or the restrictions on discharges or other conditions or (ii) rent control or rent stabilization laws or other laws regulating housing, such as the Americans with Disabilities Act and the Fair Housing Amendments Act of 1988, may result in significant unanticipated expenditures, which would adversely affect our funds from operations and the ability to make distributions to stockholders.

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Risk of Damage from Catastrophic Weather and Natural Events and Potential Climate Change. Certain of our communities are located in areas that may experience catastrophic weather and other natural events from time to time, including mudslides, fires, hurricanes, tornadoes, snow or ice storms, or other severe inclement weather. These adverse weather and natural events could cause damage or losses that may be greater than insured levels. In the event of a loss in excess of insured limits, we could lose our capital invested in the affected community, as well as anticipated future revenue from that community. We would also continue to be obligated to repay any mortgage indebtedness or other obligations related to the community. Any such loss could materially and adversely affect our business and our financial condition and results of operations.

To the extent that we experience any significant changes in the climate in areas where our communities are located, we may experience extreme weather conditions and prolonged changes in precipitation and temperature, all of which could result in physical damage to, and/or a decrease in demand for, our communities located in these areas. Should the impact of such climate change be material in nature, or occur for lengthy periods of time, our financial condition and results of operations may be adversely affected.

Risk of Earthquake Damage. Some of our communities are located in the general vicinity of active earthquake faults. We cannot assure you that an earthquake would not cause damage or losses greater than insured levels. In the event of a loss in excess of insured limits, we could lose our capital invested in the affected community, as well as anticipated future revenue from that community. We would also continue to be obligated to repay any mortgage indebtedness or other obligations related to the community. Any such loss could materially and adversely affect our business, financial condition and results of operations. Insurance coverage for earthquakes can be costly due to limited industry capacity. As a result, we may experience shortages in desired coverage levels if market conditions are such that insurance is not available or the cost of insurance makes it, in management’s view, economically impractical.

Risk of Accidental Death Due to Fire, Natural Disasters or Other Hazards. The accidental death of persons living in our communities due to fire, natural disasters or other hazards could have a material adverse effect on our business and results of operations. Our insurance coverage may not cover all losses associated with such events, and we may experience difficulty marketing communities where such any such events have occurred, which could have a material adverse effect on our business and results of operations.

Actual or Threatened Terrorist Attacks May Have an Adverse Effect on Our Business and Operating Results and Could Decrease the Value of Our Assets. Actual or threatened terrorist attacks and other acts of violence or war could have a material adverse effect on our business and operating results. Attacks that directly impact one or more of our apartment communities could significantly affect our ability to operate those communities and thereby impair our ability to achieve our expected results. Further, our insurance coverage may not cover all losses caused by a terrorist attack. In addition, the adverse effects that such violent acts and threats of future attacks could have on the U.S. economy could similarly have a material adverse effect on our business and results of operations.

Mezzanine Loan Assets Involve Greater Risks of Loss than Senior Loans Secured by Income-producing Properties. We may acquire mezzanine loans, which take the form of subordinated loans secured by second mortgages on the underlying property or loans secured by a pledge of the ownership interests of either the entity owning the property or a pledge of the ownership interests of the entity that owns the interest in the entity owning the property. Mezzanine loans may involve a higher degree of risk than long-term senior mortgage lending secured by income-producing real property, because the loan may become unsecured as a result of foreclosure by the senior lender and because it is in second position and there may not be adequate equity in the property. In the event of a bankruptcy of the entity providing the pledge of its ownership interests as security, we may not have full recourse to the assets of such entity, or the assets of the entity may not be sufficient to satisfy our mezzanine loan. If a borrower defaults on our mezzanine loan or debt senior to our loan, or in the event of a borrower bankruptcy, our mezzanine loan will be satisfied only after the senior debt. As a result, we may not recover some of or all our initial expenditure. In addition, mezzanine loans may have higher loan-to-value ratios than conventional mortgage loans, resulting in less equity in the property and increasing the risk of loss of principal.

We May Experience a Decline in the Fair Value of Our Assets and Be Forced to Recognize Impairment Charges, Which Could Materially and Adversely Impact Our Financial Condition, Liquidity and Results of Operations and the Market Price of UDR’s Common Stock. A decline in the fair value of our assets may require us to recognize an impairment against such assets under generally accepted accounting principles as in effect in the United States (“GAAP”), if we were to determine that, with respect to any assets in unrealized loss positions, we do not have the ability and intent to hold such assets to maturity or for a period of time sufficient to allow for recovery to the amortized cost of such assets. If such a determination were to be made, we would recognize unrealized losses through earnings and write down the amortized cost of such assets to a new cost basis, based on the fair value of such assets on the date they are considered to be impaired. Such impairment charges reflect non-cash losses at the time of recognition; subsequent disposition or sale of such assets could further affect our future losses or gains, as they

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are based on the difference between the sale price received and adjusted amortized cost of such assets at the time of sale. If we are required to recognize asset impairment charges in the future, these charges could materially and adversely affect our financial condition, liquidity, results of operations and the per share trading price of UDR’s common stock.

Any Material Weaknesses Identified in Our Internal Control Over Financial Reporting Could Have an Adverse Effect on UDR’s Stock Price. Section 404 of the Sarbanes-Oxley Act of 2002 requires us to evaluate and report on our internal control over financial reporting. If we identify one or more material weaknesses in our internal control over financial reporting, we could lose investor confidence in the accuracy and completeness of our financial reports, which in turn could have an adverse effect on UDR’s stock price.

Our Business and Operations Would Suffer in the Event of System Failures or Breaches in Data Security. Despite system redundancy, the implementation of security measures and the existence of a disaster recovery plan for our internal information technology systems, our systems are vulnerable to damages from any number of sources, including computer viruses, unauthorized access, energy blackouts, natural disasters, terrorism, war, and telecommunication failures. We rely on information technology networks and systems, including the Internet, to process, transmit and store electronic information and to manage or support a variety of our business processes, including financial transactions and keeping of records, which may include personal identifying information of tenants and lease data. We rely on commercially available systems, software, tools and monitoring to provide security for processing, transmitting and storing confidential tenant information, such as individually identifiable information relating to financial accounts. Although we take steps to protect the security of the data maintained in our information systems, it is possible that our security measures will not be able to prevent the systems’ improper functioning, or the improper disclosure of personally identifiable information, such as in the event of cyber attacks. Security breaches, including physical or electronic break-ins, computer viruses, attacks by hackers and similar breaches, can create system disruptions, shutdowns or unauthorized disclosure of confidential information. Any failure to maintain proper function, security and availability of our information systems could interrupt our operations, damage our reputation, subject us to liability claims or regulatory penalties and could materially and adversely affect us.

Our Success Depends on Our Senior Management. Our success depends upon the retention of our senior management, whose continued service is not guaranteed. We may not be able to find qualified replacements for the individuals who make up our senior management if their services should no longer be available to us. The loss of services of one or more members of our senior management team could have a material adverse effect on our business, financial condition and results of operations.

We May be Adversely Affected by New Federal Laws and Regulations. The United States Administration and Congress have enacted, or called for consideration of, proposals relating to a variety of issues, including with respect to health care, financial regulation reform, climate change, executive compensation and others. We believe that these and other potential proposals could have varying degrees of impact on us ranging from minimal to material. At this time, we are unable to predict with certainty what level of impact specific proposals could have on us.

Federal rulemaking and administrative efforts that may have an impact on us focus principally on the areas perceived as contributing to the global financial crisis and the most recent economic recession. These initiatives have created a degree of uncertainty regarding the basic rules governing the real estate industry and many other businesses that is unprecedented in the United States at least since the wave of lawmaking and regulatory reform that followed in the wake of the Great Depression. The federal legislative response in this area culminated in the enactment on July 21, 2010 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd-Frank Act”). Many of the provisions of the Dodd-Frank Act have extended implementation periods and delayed effective dates and continue to require extensive rulemaking by regulatory authorities; thus, the impact on us may not be known for an extended period of time. The Dodd-Frank Act, including future rules implementing its provisions and the interpretation of those rules, along with other legislative and regulatory proposals that are proposed or pending in the United States Congress, may limit our revenues, impose fees or taxes on us, and/or intensify the regulatory framework in which we operate in ways that are not currently identifiable.

Changing laws, regulations and standards relating to corporate governance and public disclosure in particular, including certain provisions of the Dodd-Frank Act and the rules and regulations promulgated thereunder, have created uncertainty for public companies like ours and could significantly increase the costs and risks associated with accessing the U.S. public markets. Because we are committed to maintaining high standards of internal control over financial reporting, corporate governance and public disclosure, our management team will need to devote significant time and financial resources to comply with these evolving standards for public companies. We intend to continue to invest appropriate resources to comply with both existing and evolving standards, and this investment has resulted and will likely continue to result in increased general and administrative expenses and a diversion of management time and attention from revenue generating activities to compliance activities.

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We May be Adversely Affected by New State and Local Laws and Regulations. We are subject to state and local laws, regulations and ordinances at locations where we operate and to the rules and regulations of various local authorities regarding a wide variety of matters that could affect, directly or indirectly, our operations. We cannot predict what matters might be considered in the future by these state and local authorities, nor can we judge what impact, if any, the implementation of new legislation might have on our business.

Changes in U.S. Accounting Standards May Materially and Adversely Affect Our Reported Results of Operations. Accounting for public companies in the United States is in accordance with GAAP, which is established by the Financial Accounting Standards Board (the “FASB”), an independent body whose standards are recognized by the SEC as authoritative for publicly held companies. Uncertainties posed by various initiatives of accounting standard-setting by the FASB and the SEC, which create and interpret applicable accounting standards for U.S. companies, may change the financial accounting and reporting standards or their interpretation and application of these standards that govern the preparation of our financial statements. These changes could have a material impact on our reported financial condition and results of operations. In some cases, we could be required to apply a new or revised standard retroactively, resulting in potentially material restatements of prior period financial statements.

Risks Related to Our Indebtedness and Financings

Insufficient Cash Flow Could Affect Our Debt Financing and Create Refinancing Risk. We are subject to the risks normally associated with debt financing, including the risk that our operating income and cash flow will be insufficient to make required payments of principal and interest, or could restrict our borrowing capacity under our line of credit due to debt covenant restraints. Sufficient cash flow may not be available to make all required principal payments and still satisfy UDR’s distribution requirements to maintain its status as a REIT for federal income tax purposes. In addition, the full limits of our line of credit may not be available to us if our operating performance falls outside the constraints of our debt covenants. We are also likely to need to refinance substantially all of our outstanding debt as it matures. We may not be able to refinance existing debt, or the terms of any refinancing may not be as favorable as the terms of the existing debt, which could create pressures to sell assets or to issue additional equity when we would otherwise not choose to do so. In addition, our failure to comply with our debt covenants could result in a requirement to repay our indebtedness prior to its maturity, which could have an adverse effect on our cash flow, increase our financing costs and impact our ability to make distributions to UDR’s stockholders.

Failure to Generate Sufficient Revenue Could Impair Debt Service Payments and Distributions to Stockholders. If our apartment communities do not generate sufficient net rental income to meet rental expenses, our ability to make required payments of interest and principal on our debt securities and to pay distributions to UDR’s stockholders will be adversely affected. The following factors, among others, may affect the net rental income generated by our apartment communities:

• the national and local economies;

• local real estate market conditions, such as an oversupply of apartment homes;

• tenants’ perceptions of the safety, convenience, and attractiveness of our communities and the neighborhoods where they are located;

• our ability to provide adequate management, maintenance and insurance;

• rental expenses, including real estate taxes and utilities;

• competition from other apartment communities;

• changes in interest rates and the availability of financing;

• changes in governmental regulations and the related costs of compliance; and

• changes in tax and housing laws, including the enactment of rent control laws or other laws regulating multi-family housing.

Expenses associated with our investment in an apartment community, such as debt service, real estate taxes, insurance and maintenance costs, are generally not reduced when circumstances cause a reduction in rental income from that community. If a community is mortgaged to secure payment of debt and we are unable to make the mortgage payments, we could sustain a loss as a result of foreclosure on the community or the exercise of other remedies by the mortgage holder.

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Our Debt Level May Be Increased. Our current debt policy does not contain any limitations on the level of debt that we may incur, although our ability to incur debt is limited by covenants in our bank and other credit agreements. We manage our debt to be in compliance with these debt covenants, but subject to compliance with these covenants, we may increase the amount of our debt at any time without a concurrent improvement in our ability to service the additional debt.

Financing May Not Be Available and Could Be Dilutive. Our ability to execute our business strategy depends on our access to an appropriate blend of debt financing, including unsecured lines of credit and other forms of secured and unsecured debt, and equity financing, including common and preferred equity. We and other companies in the real estate industry have experienced limited availability of financing from time to time. If we issue additional equity securities to finance developments and acquisitions instead of incurring debt, the interests of our existing stockholders could be diluted.

Failure To Maintain Our Current Credit Ratings Could Adversely Affect Our Cost of Funds, Related Margins, Liquidity, and Access to Capital Markets. Moody’s and Standard & Poor’s, the major debt rating agencies, routinely evaluate our debt and have given us ratings on our senior unsecured debt and preferred stock. These ratings are based on a number of factors, which included their assessment of our financial strength, liquidity, capital structure, asset quality, and sustainability of cash flow and earnings. Due to changes in these factors and market conditions, we may not be able to maintain our current credit ratings, which could adversely affect our cost of funds and related margins, liquidity, and access to capital markets.

Disruptions in Financial Markets May Adversely Impact Availability and Cost of Credit and Have Other Adverse Effects on Us and the Market Price of UDR’s Stock. Our ability to make scheduled payments or to refinance debt obligations will depend on our operating and financial performance, which in turn is subject to prevailing economic conditions and to financial, business and other factors beyond our control. During the global financial crisis and the economic recession that followed it, the United States stock and credit markets experienced significant price volatility, dislocations and liquidity disruptions, which caused market prices of many stocks to fluctuate substantially and the spreads on debt financings to widen considerably. Those circumstances materially impacted liquidity in the financial markets at times, making terms for certain financings less attractive, and in some cases resulted in the unavailability of financing. Any future disruptions or uncertainty in the stock and credit markets may negatively impact our ability to refinance existing indebtedness and access additional financing for acquisitions, development of our properties and other purposes at reasonable terms or at all, which may negatively affect our business and the market price of UDR’s common stock. If we are not successful in refinancing our existing indebtedness when it becomes due, we may be forced to dispose of properties on disadvantageous terms, which might adversely affect our ability to service other debt and to meet our other obligations. A prolonged downturn in the financial markets may cause us to seek alternative sources of potentially less attractive financing, and may require us to adjust our business plan accordingly. These events also may make it more difficult or costly for us to raise capital through the issuance of UDR’s common or preferred stock.

A Change in U.S. Government Policy Regarding Fannie Mae or Freddie Mac Could Have a Material Adverse Impact on Our Business. Fannie Mae and Freddie Mac are a major source of financing for secured multifamily rental real estate. We and other multifamily companies depend heavily on Fannie Mae and Freddie Mac to finance growth by purchasing or guaranteeing apartment loans. In September 2008, the U.S. government assumed control of Fannie Mae and Freddie Mac and placed both companies into a government conservatorship under the Federal Housing Finance Agency. The Administration and lawmakers have proposed potential options for the future of mortgage finance in the U.S. that could involve the phase out of Fannie Mae and Freddie Mac. While we believe Fannie Mae and Freddie Mac will continue to provide liquidity to our sector, should they discontinue doing so, have their mandates changed or reduced or be disbanded or reorganized by the government, it would significantly reduce our access to debt capital and adversely affect our ability to finance or refinance existing indebtedness at competitive rates and it may adversely affect our ability to sell assets. Uncertainty in the future activity and involvement of Fannie Mae and Freddie Mac as a source of financing could negatively impact our ability to make acquisitions and make it more difficult or not possible for us to sell properties or may adversely affect the price we receive for properties that we do sell, as prospective buyers may experience increased costs of debt financing or difficulties in obtaining debt financing.

The Soundness of Financial Institutions Could Adversely Affect Us. We have relationships with many financial institutions, including lenders under our credit facilities, and, from time to time, we execute transactions with counterparties in the financial services industry. As a result, defaults by, or even rumors or questions about, financial institutions or the financial services industry generally, could result in losses or defaults by these institutions. In the event that the volatility of the financial markets adversely affects these financial institutions or counterparties, we or other parties to the transactions with us may be unable to complete transactions as intended, which could adversely affect our business and results of operations.

Changing Interest Rates Could Increase Interest Costs and Adversely Affect Our Cash Flow and the Market Price of Our Securities. We currently have, and expect to incur in the future, interest-bearing debt at rates that vary with market interest rates. As of March 31, 2015, UDR had approximately $816.2 million million of variable rate indebtedness outstanding, which constitutes approximately 23.2% of total outstanding indebtedness as of such date. As of March 31, 2015, the Operating

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Partnership had approximately $219.8 million of variable rate indebtedness outstanding, which constitutes approximately 23.6% of total outstanding indebtedness to third parties as of such date. An increase in interest rates would increase our interest expenses and increase the costs of refinancing existing indebtedness and of issuing new debt. Accordingly, higher interest rates could adversely affect cash flow and our ability to service our debt and to make distributions to security holders. The effect of prolonged interest rate increases could negatively impact our ability to make acquisitions and develop properties. In addition, an increase in market interest rates may lead our security holders to demand a higher annual yield, which could adversely affect the market price of UDR’s common and preferred stock and debt securities.

Interest Rate Hedging Contracts May Be Ineffective and May Result in Material Charges. From time to time when we anticipate issuing debt securities, we may seek to limit our exposure to fluctuations in interest rates during the period prior to the pricing of the securities by entering into interest rate hedging contracts. We may do this to increase the predictability of our financing costs. Also, from time to time we may rely on interest rate hedging contracts to limit our exposure under variable rate debt to unfavorable changes in market interest rates. If the terms of new debt securities are not within the parameters of, or market interest rates fall below that which we incur under a particular interest rate hedging contract, the contract is ineffective. Furthermore, the settlement of interest rate hedging contracts has involved and may in the future involve material charges. In addition, our use of interest rate hedging arrangements may expose us to additional risks, including a risk that a counterparty to a hedging arrangement may fail to honor its obligations. Developing an effective interest rate risk strategy is complex and no strategy can completely insulate us from risks associated with interest rate fluctuations. There can be no assurance that our hedging activities will have desired beneficial impact on our results of operations or financial condition. Termination of these hedging agreements typically involves costs, such as transaction fees or breakage costs.

Risks Related to Tax Laws

We Would Incur Adverse Tax Consequences if UDR Failed to Qualify as a REIT. UDR has elected to be taxed as a REIT under the Code. Our qualification as a REIT requires us to satisfy numerous requirements, some on an annual and quarterly basis, established under highly technical and complex Code provisions for which there are only limited judicial or administrative interpretations, and involves the determination of various factual matters and circumstances not entirely within our control. We intend that our current organization and method of operation enable us to continue to qualify as a REIT, but we may not so qualify or we may not be able to remain so qualified in the future. In addition, U.S. federal income tax laws governing REITs and other corporations and the administrative interpretations of those laws may be amended at any time, potentially with retroactive effect. Future legislation, new regulations, administrative interpretations or court decisions could adversely affect our ability to qualify as a REIT or adversely affect UDR’s stockholders.

If we fail to qualify as a REIT in any taxable year, we would be subject to federal income tax (including any applicable alternative minimum tax) on our taxable income at regular corporate rates, and would not be allowed to deduct dividends paid to UDR’s stockholders in computing our taxable income. Also, unless the Internal Revenue Service granted us relief under certain statutory provisions, we could not re-elect REIT status until the fifth calendar year after the year in which we first failed to qualify as a REIT. The additional tax liability from the failure to qualify as a REIT would reduce or eliminate the amount of cash available for investment or distribution to UDR’s stockholders. This would likely have a significant adverse effect on the value of our securities and our ability to raise additional capital. In addition, we would no longer be required to make distributions to UDR’s stockholders. Even if we continue to qualify as a REIT, we will continue to be subject to certain federal, state and local taxes on our income and property.

Certain of our subsidiaries have also elected to be taxed as a REIT under the Code, and are therefore subject to the same risks in the event that they fail to qualify as a REIT in any taxable year.

Dividends Paid By REITs Generally Do Not Qualify for Reduced Tax Rates. In general, the maximum U.S. federal income tax rate for dividends paid to individual U.S. stockholders is 20%. Unlike dividends received from a corporation that is not a REIT, our distributions to individual stockholders generally are not eligible for the reduced rates.

UDR May Conduct a Portion of Our Business Through Taxable REIT Subsidiaries, Which are Subject to Certain Tax Risks. We have established several taxable REIT subsidiaries. Despite UDR’s qualification as a REIT, its taxable REIT subsidiaries must pay income tax on their taxable income. In addition, we must comply with various tests to continue to qualify as a REIT for federal income tax purposes, and our income from and investments in our taxable REIT subsidiaries generally do not constitute permissible income and investments for these tests. While we will attempt to ensure that our dealings with our taxable REIT subsidiaries will not adversely affect our REIT qualification, we cannot provide assurance that we will successfully achieve that result. Furthermore, we may be subject to a 100% penalty tax, we may jeopardize our ability to retain future gains on real property sales, or our taxable REIT subsidiaries may be denied deductions, to the extent our dealings with our taxable REIT subsidiaries are not deemed to be arm’s length in nature or are otherwise not respected.

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REIT Distribution Requirements Limit Our Available Cash. As a REIT, UDR is subject to annual distribution requirements, which limit the amount of cash we retain for other business purposes, including amounts to fund our growth. We generally must distribute annually at least 90% of our net REIT taxable income, excluding any net capital gain, in order for our distributed earnings not to be subject to corporate income tax. We intend to make distributions to UDR’s stockholders to comply with the requirements of the Code. However, differences in timing between the recognition of taxable income and the actual receipt of cash could require us to sell assets or borrow funds on a short-term or long-term basis to meet the 90% distribution requirement of the Code.

Certain Property Transfers May Generate Prohibited Transaction Income, Resulting in a Penalty Tax on Gain Attributable to the Transaction. From time to time, we may transfer or otherwise dispose of some of our properties. Under the Code, any gain resulting from transfers of properties that we hold as inventory or primarily for sale to customers in the ordinary course of business would be treated as income from a prohibited transaction and subject to a 100% penalty tax. Since we acquire properties for investment purposes, we do not believe that our occasional transfers or disposals of property are prohibited transactions. However, whether property is held for investment purposes is a question of fact that depends on all the facts and circumstances surrounding the particular transaction. The Internal Revenue Service may contend that certain transfers or disposals of properties by us are prohibited transactions. If the Internal Revenue Service were to argue successfully that a transfer or disposition of property constituted a prohibited transaction, then we would be required to pay a 100% penalty tax on any gain allocable to us from the prohibited transaction and we may jeopardize our ability to retain future gains on real property sales. In addition, income from a prohibited transaction might adversely affect UDR’s ability to satisfy the income tests for qualification as a REIT for federal income tax purposes.

We Could Face Possible State and Local Tax Audits and Adverse Changes in State and Local Tax Laws. As discussed in the risk factors above, because UDR is organized and qualifies as a REIT it is generally not subject to federal income taxes, but it is subject to certain state and local taxes. From time to time, changes in state and local tax laws or regulations are enacted, which may result in an increase in our tax liability. A shortfall in tax revenues for states and municipalities in which we own apartment communities may lead to an increase in the frequency and size of such changes. If such changes occur, we may be required to pay additional state and local taxes. These increased tax costs could adversely affect our financial condition and the amount of cash available for the payment of distributions to UDR’s stockholders. In the normal course of business, entities through which we own real estate may also become subject to tax audits. If such entities become subject to state or local tax audits, the ultimate result of such audits could have an adverse effect on our financial condition.

The Operating Partnership Intends to Qualify as a Partnership, But Cannot Guarantee That It Will Qualify. The Operating Partnership intends to qualify as a partnership for federal income tax purposes at any such time that the Operating Partnership admits additional limited partners other than UDR. If classified as a partnership, the Operating Partnership generally will not be a taxable entity and will not incur federal income tax liability. However, the Operating Partnership would be treated as a corporation for federal income tax purposes if it were a “publicly traded partnership,” unless at least 90% of the Operating Partnership’s income was qualifying income as defined in the Code. A “publicly traded partnership” is a partnership whose partnership interests are traded on an established securities market or are readily tradable on a secondary market (or the substantial equivalent thereof). Although the Operating Partnership’s partnership units are not traded on an established securities market, because of the redemption right, the Operating Partnership’s units held by limited partners could be viewed as readily tradable on a secondary market (or the substantial equivalent thereof), and the Operating Partnership may not qualify for one of the “safe harbors” under the applicable tax regulations. Qualifying income for the 90% test generally includes passive income, such as real property rents, dividends and interest. The income requirements applicable to REITs and the definition of qualifying income for purposes of this 90% test are similar in most respects. The Operating Partnership may not meet this qualifying income test. If the Operating Partnership were to be taxed as a corporation, it would incur substantial tax liabilities, and UDR would then fail to qualify as a REIT for tax purposes, unless it qualified for relief under certain statutory savings provisions, and our ability to raise additional capital would be impaired.

Qualifying as a REIT Involves Highly Technical and Complex Provisions of the Code. Our qualification as a REIT involves the application of highly technical and complex Code provisions for which only limited judicial and administrative authorities exist. Even a technical or inadvertent violation could jeopardize our REIT qualification. Moreover, new legislation, court decisions or administrative guidance, in each case possibly with retroactive effect, may make it more difficult or impossible for us to qualify as a REIT. Our qualification as a REIT will depend on our satisfaction of certain asset, income, organizational, distribution, shareholder ownership and other requirements on a continuing basis. Our ability to satisfy the REIT income and asset tests depends upon our analysis of the characterization and fair market values of our assets, some of which are not susceptible to a precise determination and for which we will not obtain independent appraisals, and upon our ability to successfully manage the composition of our income and assets on an ongoing basis. In addition, our ability to satisfy the requirements to qualify as a REIT depends in part on the actions of third parties over which we have no control or only

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limited influence, including in cases where we own an equity interest in an entity that is classified as a partnership for U.S. federal income tax purposes.

Risks Related to Our Organization and Ownership of UDR’s Stock

Changes in Market Conditions and Volatility of Stock Prices Could Adversely Affect the Market Price of UDR’s Common Stock. The stock markets, including the New York Stock Exchange (“NYSE”), on which we list UDR’s common stock, have experienced significant price and volume fluctuations. As a result, the market price of UDR’s common stock could be similarly volatile, and investors in UDR’s common stock may experience a decrease in the value of their shares, including decreases unrelated to our operating performance or prospects. In addition to the risks listed in this “Risk Factors” section, a number of factors could negatively affect the price per share of UDR’s common stock, including:

• general market and economic conditions;

• actual or anticipated variations in UDR’s quarterly operating results or dividends or UDR’s payment of dividends in shares of UDR’s stock;

• changes in our funds from operations or earnings estimates;

• difficulties or inability to access capital or extend or refinance existing debt;

• decreasing (or uncertainty in) real estate valuations;

• changes in market valuations of similar companies;

• publication of research reports about us or the real estate industry;

• the general reputation of real estate investment trusts and the attractiveness of their equity securities in comparison to other equity securities (including securities issued by other real estate companies);

• general stock and bond market conditions, including changes in interest rates on fixed income securities, that may lead prospective purchasers of UDR’s stock to demand a higher annual yield from future dividends;

• a change in analyst ratings;

• additions or departures of key management personnel;

• adverse market reaction to any additional debt we incur in the future;

• speculation in the press or investment community;

• terrorist activity which may adversely affect the markets in which UDR’s securities trade, possibly increasing market volatility and causing the further erosion of business and consumer confidence and spending;

• failure to qualify as a REIT;

• strategic decisions by us or by our competitors, such as acquisitions, divestments, spin-offs, joint ventures, strategic investments or changes in business strategy;

• failure to satisfy listing requirements of the NYSE;

• governmental regulatory action and changes in tax laws; and

• the issuance of additional shares of UDR’s common stock, or the perception that such sales might occur, including under UDR’s at-the-market equity distribution program.

Many of the factors listed above are beyond our control. These factors may cause the market price of shares of UDR’s common stock to decline, regardless of our financial condition, results of operations, business or our prospects.

We May Change the Dividend Policy for UDR’s Common Stock in the Future. The decision to declare and pay dividends on UDR’s common stock, as well as the timing, amount and composition of any such future dividends, will be at the sole discretion of our board of directors and will depend on our earnings, funds from operations, liquidity, financial condition,

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capital requirements, contractual prohibitions or other limitations under our indebtedness, the annual distribution requirements under the REIT provisions of the Code, state law and such other factors as our board of directors considers relevant. Any change in our dividend policy could have a material adverse effect on the market price of UDR’s common stock.

Maryland Law May Limit the Ability of a Third Party to Acquire Control of Us, Which May Not be in UDR’s Stockholders’ Best Interests. Maryland business statutes may limit the ability of a third party to acquire control of us. As a Maryland corporation, we are subject to various Maryland laws which may have the effect of discouraging offers to acquire our Company and of increasing the difficulty of consummating any such offers, even if our acquisition would be in UDR’s stockholders’ best interests. The Maryland General Corporation Law restricts mergers and other business combination transactions between us and any person who acquires beneficial ownership of shares of UDR’s stock representing 10% or more of the voting power without our board of directors’ prior approval. Any such business combination transaction could not be completed until five years after the person acquired such voting power, and generally only with the approval of stockholders representing 80% of all votes entitled to be cast and 66 2/3 % of the votes entitled to be cast, excluding the interested stockholder, or upon payment of a fair price. Maryland law also provides generally that a person who acquires shares of our equity stock that represents 10% (and certain higher levels) of the voting power in electing directors will have no voting rights unless approved by a vote of two-thirds of the shares eligible to vote.

Limitations on Share Ownership and Limitations on the Ability of UDR’s Stockholders to Effect a Change in Control of Our Company Restricts the Transferability of UDR’s Stock and May Prevent Takeovers That are Beneficial to UDR’s Stockholders. One of the requirements for maintenance of our qualification as a REIT for U.S. federal income tax purposes is that no more than 50% in value of our outstanding capital stock may be owned by five or fewer individuals, including entities specified in the Code, during the last half of any taxable year. Our charter contains ownership and transfer restrictions relating to UDR’s stock primarily to assist us in complying with this and other REIT ownership requirements; however, the restrictions may have the effect of preventing a change of control, which does not threaten REIT status. These restrictions include a provision that generally limits ownership by any person of more than 9.9% of the value of our outstanding equity stock, unless our board of directors exempts the person from such ownership limitation, provided that any such exemption shall not allow the person to exceed 13% of the value of our outstanding equity stock. Absent such an exemption from our board of directors, the transfer of UDR’s stock to any person in excess of the applicable ownership limit, or any transfer of shares of such stock in violation of the ownership requirements of the Code for REITs, will be considered null and void, and the intended transferee of such stock will acquire no rights in such shares. These provisions of our charter may have the effect of delaying, deferring or preventing someone from taking control of us, even though a change of control might involve a premium price for UDR’s stockholders or might otherwise be in UDR’s stockholders’ best interests.

Item 2.        UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Unregistered Sales of Equity Securities

From time to time the Company issues shares of the Company’s common stock in exchange for operating partnership units (“OP Units”) tendered to the Operating Partnership, for redemption in accordance with the provisions of the Operating Partnership’s limited partnership agreement. The holders of limited partnership OP Units have the right to require the Operating Partnership to redeem all or a portion of their limited partnership OP Units in exchange for a cash payment based on the market value of our common stock at the time of redemption. However, the Operating Partnership’s obligation to pay the cash amount is subject to the prior right of the Company to acquire such OP Units in exchange for either the Cash Amount or the number of shares of the Company’s common stock equal to the number of OP Units being redeemed.

During the three months ended March 31, 2015, we issued 534 shares of our common stock upon redemption of OP Units. Because these shares of common stock were issued to accredited investors in transactions not involving a public offering, the transactions were exempt from registration under the Securities Act of 1933 in accordance with Section 4(a)(2).

Repurchase of Equity Securities

In February 2006, UDR’s Board of Directors authorized a 10 million share repurchase program. In January 2008, our Board of Directors authorized a new 15 million share repurchase program. Under the two share repurchase programs, UDR may repurchase shares of our common stock in open market purchases, block purchases, privately negotiated transactions or otherwise. As reflected in the table below, no shares of common stock were repurchased under these programs during the quarter ended March 31, 2015.

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Period	Total Number of Shares Purchased	Weighted Average Price per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (a)
Beginning Balance	9,967,490	$	22.00	9,967,490	15,032,510
January 1, 2015 through January 31, 2015	—	—		—	15,032,510
February 1, 2015 through February 28, 2015	—	—		—	15,032,510
March 1, 2015 through March 31, 2015	—	—		—	15,032,510
Balance as of March 31, 2015	9,967,490	$	22.00	9,967,490	15,032,510

(a) This number reflects the amount of shares that were available for purchase under our 10,000,000 share repurchase program authorized in February 2006 and our 15,000,000 share repurchase program authorized in January 2008.

During the three months ended March 31, 2015, certain of our employees surrendered shares of common stock owned by them to satisfy their statutory minimum federal and state tax obligations associated with the vesting of restricted shares of common stock issued under our 1999 Long-Term Incentive Plan (the “LTIP”). The following table summarizes all of these repurchases during the three months ended March 31, 2015.

Period	Total Number of Shares Purchased	Weighted Average Price Paid per Share (a)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
January 1, 2015 through January 31, 2015	22,864	$	31.37	N/A	N/A
February 1, 2015 through February 28, 2015	74,120	33.28		N/A	N/A
March 1, 2015 through March 31, 2015	—	—		N/A	N/A
Total	96,984	$	32.83

(a) The price paid per share is based on the closing price of our common stock as of the date of the determination of the statutory minimum for federal and state tax obligations.

Item 3.        DEFAULTS UPON SENIOR SECURITIES

None.

Item 4.        MINE SAFETY DISCLOSURES

Not applicable.

Item 5.        OTHER INFORMATION

None.

Item 6.        EXHIBITS

The exhibits filed or furnished with this Report are set forth in the Exhibit Index.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each of the registrants has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.

		UDR, Inc.
Date:	April 28, 2015	/s/ Mark A. Schumacher
		Mark A. Schumacher Chief Accounting Officer and Senior Vice President (Principal Accounting Officer)
		United Dominion Realty, L.P.
		By:	UDR, Inc., its general partner
Date:	April 28, 2015	/s/ Mark A. Schumacher
		Mark A. Schumacher Chief Accounting Officer and Senior Vice President (Principal Accounting Officer)

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EXHIBIT INDEX

Exhibit No.	Description
3.1	Articles of Restatement of UDR, Inc. (incorporated by reference to Exhibit 3.09 to UDR, Inc.’s Current Report on Form 8-K dated July 27, 2005 and filed with the SEC on August 1, 2005).
3.2	Articles of Amendment to the Articles of Restatement of UDR, Inc. dated and filed with the State Department of Assessments and Taxation of the State of Maryland on March 14, 2007 (incorporated by reference to Exhibit 3.2 to UDR, Inc.’s Current Report on Form 8-K dated March 14, 2007 and filed with the SEC on March 15, 2007).
3.3	Articles of Amendment to the Articles of Restatement of UDR, Inc. dated and filed with the State Department of Assessments and Taxation of the State of Maryland on August 30, 2011 (incorporated by reference to Exhibit 3.1 to UDR, Inc.’s Current Report on Form 8-K dated and filed with the SEC on September 1, 2011.
3.4	Certificate of Limited Partnership of United Dominion Realty, L.P. dated February 19, 2004 (incorporated by reference to Exhibit 3.4 to United Dominion Realty, L.P.’s Post-Effective Amendment No. 1 to Registration Statement on Form S-3 dated and filed with the SEC on October 15, 2010).
3.5	Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated as of February 23, 2004 (incorporated by reference to Exhibit 10.23 to UDR, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2003).
3.6	First Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated June 24, 2005 (incorporated by reference to Exhibit 10.06 to UDR, Inc.’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005).
3.7	Second Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated February 23, 2006 (incorporated by reference to Exhibit 10.6 to UDR, Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2006).
3.8	Third Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated February 2, 2007 (incorporated by reference to Exhibit 99.1 to UDR, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2009).
3.9	Fourth Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated December 27, 2007 (incorporated by reference to Exhibit 10.25 to UDR, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2007).
3.10	Fifth Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated March 7, 2008 (incorporated by reference to Exhibit 10.53 to UDR, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008).
3.11	Sixth Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. dated December 9, 2008 (incorporated by reference to Exhibit 10.1 to UDR, Inc.’s Current Report on Form 8-K dated December 9, 2008 and filed with the Commission on December 10, 2008).
3.12	Seventh Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P., dated as of March 13, 2009 (incorporated by reference to Exhibit 10.1 to UDR, Inc.’s Current Report on Form 8-K dated March 18, 2009 and filed with the SEC on March 19, 2009).
3.13	Eighth Amendment to the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P., dated as of November 17, 2010 (incorporated by reference to Exhibit 10.1 to UDR, Inc.’s Current Report on Form 8-K dated November 18, 2010 and filed with the SEC on November 18, 2010).

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Exhibit No.	Description
3.14	Amended and Restated Bylaws of UDR, Inc. (as amended through May 12, 2011) (incorporated by reference to Exhibit 3.1 to UDR, Inc.’s Current Report on Form 8-K filed with the SEC on May 13, 2011).
10.1 *+	Form of UDR, Inc. Restricted Stock Award Agreement under the 1999 Long-Term Incentive Plan.
12.1	Computation of Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends of UDR, Inc.
12.2	Computation of Ratio of Earnings to Fixed Charges of United Dominion Realty, L.P.
31.1	Rule 13a-14(a) Certification of the Chief Executive Officer of UDR, Inc.
31.2	Rule 13a-14(a) Certification of the Chief Financial Officer of UDR, Inc.
31.3	Rule 13a-14(a) Certification of the Chief Executive Officer of UDR Inc., general partner of United Dominion Realty, L.P.
31.4	Rule 13a-14(a) Certification of the Chief Financial Officer of UDR Inc., general partner of United Dominion Realty, L.P.
32.1	Section 1350 Certification of the Chief Executive Officer of UDR, Inc.
32.2	Section 1350 Certification of the Chief Financial Officer of UDR, Inc.
32.3	Section 1350 Certification of the Chief Executive Officer of UDR Inc., general partner of United Dominion Realty, L.P.
32.4	Section 1350 Certification of the Chief Financial Officer of UDR Inc., general partner of United Dominion Realty, L.P.
101	XBRL (Extensible Business Reporting Language). The following materials from this Quarterly Report on Form 10-Q for the periods ended March 31, 2015, formatted in XBRL: (i) consolidated balance sheets of UDR, Inc., (ii) consolidated statements of operations of UDR, Inc., (iii) consolidated statements of comprehensive income/(loss) of UDR, Inc., (iv) consolidated statements of changes in equity of UDR, Inc., (v) consolidated statements of cash flows of UDR, Inc., (vi) notes to consolidated financial statements of UDR, Inc., (vii) consolidated balance sheets of United Dominion Realty, L.P., (viii) consolidated statements of operations of United Dominion Realty, L.P., (ix) consolidated statements of comprehensive income/(loss) of United Dominion Realty, L.P., (x) consolidated statements of changes in capital of United Dominion Realty, L.P., (xi) consolidated statements of cash flows of United Dominion Realty, L.P., (xii) notes to consolidated financial statements of United Dominion Realty, L.P.

* Management Contract or Compensatory Plan or Arrangement.

+ Filed herewith.

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EX-10.1

Exhibit 10.1

RESTRICTED STOCK AWARD AGREEMENT
under the

UDR, INC.
1999 LONG-TERM INCENTIVE PLAN

(AS AMENDED AND RESTATED FEBRUARY 6, 2014)

Grantee:	[Name]
Number of Shares:	[Shares]
Date of Grant:	[Date]
Value as of Grant Date:	$______ per share

1.Grant of Shares. UDR, Inc. (the "Company") hereby grants to the Grantee named above (the "Grantee"), as additional compensation for services to be rendered, and subject to the restrictions and the other terms and conditions set forth in the Company's 1999 Long-Term Incentive Plan (the "Plan") and in this Restricted Stock Award Agreement (this "Agreement"), the number of shares indicated above of the Company's $0.01 par value common stock (the "Shares"). Capitalized terms used herein and not otherwise defined shall have the meanings assigned such terms in the Plan.

2.Vesting of Restricted Stock. Unless the vesting under this Agreement is accelerated in accordance with Article 14 of the Plan, 100% of the Shares subject to this Agreement shall vest (become exercisable) under the following terms: [Vesting Terms].

3.Restrictions. The Shares are subject to each of the following restrictions. "Restricted Shares" means those Shares that are subject to the restrictions imposed hereunder which restrictions have not then expired or terminated. Restricted Shares may not be sold, transferred, exchanged, assigned, pledged, hypothecated or otherwise encumbered. If the Grantee's employment with the Company or any Parent or Subsidiary terminates for any reason other than as set forth in paragraph (a) or (b) of Section 4 hereof, then the Grantee shall forfeit all of the Grantee's right, title and interest in and to the Restricted Shares as of the date of employment termination and such Restricted Shares shall be re-conveyed to the Company without further consideration or any act or action by the Grantee.

The restrictions imposed under this Section 3 shall apply to all shares of the Company's stock or other securities issued with respect to Restricted Shares hereunder in connection with any merger, reorganization, consolidation, re-capitalization, stock dividend or other change in corporate structure affecting the common stock of the Company.

4.Expiration and Termination of Restrictions. The restrictions imposed under Section 3 will expire on the earliest to occur of the following:

(a) On the date of termination of the Grantee's employment with the Company or any Parent or Subsidiary because of his or her death or Disability; or

(b) On the date specified by the Committee or as otherwise established in the Plan in the event of an acceleration of vesting under Article 14 of the Plan (including, without limitation, upon the occurrence of a Change in Control, as defined in the Plan).

5.Delivery of Shares. The Shares will be registered in the name of the Grantee as Restricted Stock and may be held by the Company prior to the lapse of the restrictions thereon as provided in Section 4 hereof (the "Restricted Period"). Any certificate for Shares issued during the Restricted Period shall be registered in the name of the Grantee and shall bear a legend in substantially the following form:

THIS CERTIFICATE AND THE SHARES OF STOCK REPRESENTED HEREBY ARE SUBJECT TO THE TERMS AND CONDITIONS (INCLUDING FORFEITURE AND RESTRICTIONS AGAINST TRANSFER) CONTAINED IN A RESTRICTED STOCK AWARD AGREEMENT DATED [DATE] BETWEEN THE REGISTERED OWNER OF THE SHARES REPRESENTED HEREBY AND UDR, INC. RELEASE FROM SUCH TERMS AND CONDITIONS SHALL BE MADE ONLY IN ACCORDANCE WITH THE PROVISIONS OF SUCH AGREEMENT, COPIES OF WHICH ARE ON FILE IN THE OFFICE OF UDR, INC.

If requested, the Grantee shall deposit with the Company, a stock power, or powers, executed in blank and sufficient to re-convey the Restricted Shares to the Company upon termination of the Grantee's employment during the Restricted Period, in accordance with the provisions of this Agreement.

6.Voting and Dividend Rights. The Grantee, as beneficial owner of the Shares, shall have full voting rights with respect to the Shares and shall receive dividends on the Shares during the Restricted Period. Dividends on the Shares are not eligible for participation in the Company's Dividend Reinvestment Plan during the Restricted Period.

7.Restrictions on Transfer and Pledge. The Restricted Shares may not be pledged, encumbered, or hypothecated to or in favor of any party other than the Company or a Parent or Subsidiary, or be subject to any lien, obligation, or liability of the Grantee to any other party other than the Company or a Parent or Subsidiary. The Restricted Shares are not assignable or transferable by the Grantee other than by will or the laws of descent and distribution.

8.Changes in Capital Structure. In the event a stock dividend is declared upon the Stock, the shares of Stock then subject to this Agreement shall be increased proportionately. In the event the Stock shall be changed into or exchanged for a different number or class of shares of stock or securities of the Company or of another corporation, whether through reorganization, re-capitalization, reclassification, share exchange, stock split-up, combination of shares, merger or consolidation, there shall be substituted for each such share of Stock then subject to this Agreement the number and class of shares into which each outstanding share of Stock shall be so exchanged, or there shall be made such other equitable adjustment as the Committee shall approve.

9.Stop Transfer Notices. In order to ensure compliance with the restrictions on transfer set forth in this Agreement or the Plan, the Company may issue appropriate “stop transfer” instructions to its transfer agent, if any, and, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records.

10.Refusal to Transfer. The Company shall not be required (a) to transfer on its books any Restricted Shares that have been sold or otherwise transferred in violation of any of the provisions of this Agreement or (b) to treat as owner of such Restricted Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Restricted Shares shall have been so transferred.

11.No Right of Continued Employment. Nothing in this Agreement shall interfere with or limit in any way the right of the Company or any Parent or Subsidiary to terminate the Grantee's employment at any time, nor confer upon the Grantee any right to continue in the employ of the Company or any Parent or Subsidiary.

12.Payment of Taxes.

(a) The Grantee upon issuance of the Shares hereunder, shall be authorized to make an election to be taxed upon such award under Section 83(b) of the Code. To effect such election, the Grantee may file an appropriate election with the Internal Revenue Service within thirty (30) days after award of the Shares and otherwise in accordance with applicable Treasury Regulations.

(b) The Grantee will, no later than the date as of which any amount related to the Shares first becomes includable in the Grantee's gross income for federal income tax purposes, pay to the Company, or make other arrangements satisfactory to the Committee regarding payment of, any federal, state and local taxes of any kind required by law to be withheld with respect to such amount. For the avoidance of doubt, the Grantee may satisfy such payment by permitting the Company to reduce the number of Shares by an amount sufficient to satisfy the minimum amount (and not any greater amount) required to be withheld for tax purposes. The obligations of the Company under this Agreement will be conditional on such payment or arrangements, and the Company, and, where applicable, its Subsidiaries will, to the extent permitted by law, have the right to deduct any such taxes from any payment of any kind otherwise due to the Grantee.

13.Grantee's Covenant. The Grantee hereby agrees to use his best efforts to provide services to the Company in a workmanlike manner and to promote the Company's interests.

14.Amendment. The Committee may amend, modify or terminate this Agreement without approval of the Grantee; provided, however, that such amendment, modification or termination shall not, without the Grantee's consent, reduce or diminish the value of this award determined as if it had been fully vested on the date of such amendment or termination.

15.Plan Controls. The terms contained in the Plan are incorporated into and made a part of this Agreement and this Agreement shall be governed by and construed in accordance with the Plan. In the event of any actual or alleged conflict between the provisions of the Plan and the provisions of this Agreement, the provisions of the Plan shall be controlling and determinative.

16.Successors. This Agreement shall be binding upon any successor of the Company, in accordance with the terms of this Agreement and the Plan.

17.Severability. If any one or more of the provisions contained in this Agreement is invalid, illegal or unenforceable, the other provisions of this Agreement will be construed and enforced as if the invalid, illegal or unenforceable provision had never been included.

18.Notice. Notices and communications under this Agreement must be in writing and either personally delivered or sent by registered or certified United States mail, return receipt requested, postage prepaid. Notices to the Company must be addressed to:

UDR, Inc.
1745 Shea Center Dr., Suite 200

Highlands Ranch, Colorado 80129

Attn: Corporate Secretary

or any other address designated by the Company in a written notice to the Grantee. Notices to the Grantee will be directed to the address of the Grantee then currently on file with the Company, or at any other address given by the Grantee in a written notice to the Company.

19.Dispute Resolution. The provisions of this Section 19 shall be the exclusive means of resolving disputes arising out of or relating to the Plan and this Agreement. The Company, the Grantee, and the Grantee’s assignees (the “parties”) shall attempt in good faith to resolve any disputes arising out of or relating to the Plan and this Agreement by negotiation between individuals who have authority to settle the controversy. Negotiations shall be commenced by either party by notice of a written statement of the party’s position and the name and title of the individual who will represent the party. Within thirty (30) days of the written notification, the parties shall meet at a mutually acceptable time and place, and thereafter as often as they reasonably deem necessary, to resolve the dispute. If the dispute has not been resolved by negotiation, the parties agree that any suit, action, or proceeding arising out of or relating to the Plan or this Agreement shall be brought in the United States District Court for the District of Colorado (or should such court lack jurisdiction to hear such action, suit or proceeding, in a state court in Colorado) and that the parties shall submit to the jurisdiction of such court. The parties irrevocably waive, to the fullest extent permitted by law, any objection the party may have to the laying of venue for any such suit, action or proceeding brought in such court. THE PARTIES ALSO EXPRESSLY WAIVE ANY RIGHT THEY HAVE OR MAY HAVE TO A JURY TRIAL OF ANY SUCH SUIT, ACTION OR PROCEEDING. If any one or more provisions of this Section 19 shall for any reason be held invalid or unenforceable, it is the specific intent of the parties that such provisions shall be modified to the minimum extent necessary to make it or its application valid and enforceable.

IN WITNESS WHEREOF, the Company and the Grantee have executed this Agreement and agree that the Shares are to be governed by the terms and conditions of this Agreement and the Plan.

UDR, INC.
By:
Name:	Thomas W. Toomey
Title:	Chief Executive Officer & President

The Grantee acknowledges receipt of a copy of the Plan and this Agreement and represents that he or she is familiar with the terms and provisions thereof, and hereby accepts the Shares subject to all of the terms and provisions hereof and thereof. The Grantee has reviewed this Agreement and the Plan in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Agreement and fully understands all provisions of this Agreement and the Plan. The Grantee hereby agrees that all disputes arising out of or relating to this Agreement and the Plan shall be resolved in accordance with Section 19 of this Agreement. The Grantee further agrees to notify the Company upon any change in the residence address indicated in this Agreement.

GRANTEE:

_________________________________

[Name]

EX-12.1

EXHIBIT 12.1

UDR, Inc.

Computation of Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends

(Dollars in thousands)

	Three Months Ended March 31,
	2015		2014
Earnings:
Income/(loss) from continuing operations	$	76,417	$	(5,195	)
Add (from continuing operations):
Interest on indebtedness (a)	28,800		32,884
Portion of rents representative of the interest factor	455		564
Amortization of capitalized interest	931		928
Total earnings	$	106,603	$	29,181
Fixed charges and preferred stock dividends (from continuing operations):
Interest on indebtedness (a)	$	28,800	$	32,884
Interest capitalized	4,839		5,308
Portion of rents representative of the interest factor	455		564
Fixed charges	$	34,094	$	38,756
Add:
Preferred stock dividends	931		931
Combined fixed charges and preferred stock dividends	$	35,025	$	39,687
Ratio of earnings to fixed charges	3.13		—			(b)
Ratio of earnings to combined fixed charges and preferred stock dividends	3.04		—			(c)

(a) Includes interest expense of consolidated subsidiaries, amortization of deferred loan costs, realized losses related to hedging activities and amortization of premiums and discounts related to indebtedness.

(b) The ratio was less than 1:1 for the three months ended March 31, 2014 as earnings were inadequate to cover fixed charges by deficiencies of approximately $9.6 million.

(c) The ratio was less than 1:1 for the three months ended March 31, 2014 as earnings were inadequate to cover combined fixed charges and preferred stock dividends by deficiencies of approximately $10.5 million.

EX-12.2

EXHIBIT 12.2

United Dominion Realty, L.P.

Computation of Ratio of Earnings to Fixed Charges

(Dollars in thousands)

	Three Months Ended March 31,
	2015		2014
Earnings:
Income/(loss) from continuing operations	$	12,117	$	6,411
Add from continuing operations:
Interest on indebtedness (1)	10,771		10,014
Portion of rents representative of the interest factor	471		431
Amortization of capitalized interest	181		181
Total earnings	$	23,540	$	17,037
Fixed charges from continuing operations:
Interest on indebtedness (1)	$	10,771	$	10,014
Interest capitalized	22		1,024
Portion of rents representative of the interest factor	471		431
Fixed charges	$	11,264	$	11,469
Ratio of earnings to fixed charges	2.1		1.5

(1) Includes interest expense of consolidated subsidiaries, amortization of deferred loan costs, realized losses related to hedging activities and amortization of premiums and discounts related to indebtedness.

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, Thomas W. Toomey, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of UDR, Inc.;

2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d) Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2015	/s/ Thomas W. Toomey
		Thomas W. Toomey
		Chief Executive Officer and President (Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Thomas M. Herzog, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of UDR, Inc.;

2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d) Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2015	/s/ Thomas M. Herzog
		Thomas M. Herzog
		Senior Vice President and Chief Financial Officer (Principal Financial Officer)

EX-31.3

EXHIBIT 31.3

CERTIFICATION

I, Thomas W. Toomey, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of United Dominion Realty, L.P.;

2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d) Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2015	/s/ Thomas W. Toomey
		Thomas W. Toomey
		Chief Executive Officer and President of UDR, Inc. (Principal Executive Officer),
		general partner of United Dominion Realty, L.P.

EX-31.4

EXHIBIT 31.4

CERTIFICATION

I, Thomas M. Herzog, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of United Dominion Realty, L.P.;

2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

(d) Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2015	/s/ Thomas M. Herzog
		Thomas M. Herzog
		Senior Vice President and Chief Financial Officer of UDR, Inc. (Principal Financial Officer),
		general partner of United Dominion Realty, L.P.

EX-32.1

EXHIBIT 32.1

CERTIFICATION

In connection with the periodic report of UDR, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Thomas W. Toomey, Chief Executive Officer and President of the Company, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Date:	April 28, 2015	/s/ Thomas W. Toomey
		Thomas W. Toomey
		Chief Executive Officer and President (Principal Executive Officer)

EX-32.2

EXHIBIT 32.2

CERTIFICATION

In connection with the periodic report of UDR, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Thomas M. Herzog, Senior Vice President and Chief Financial Officer of the Company, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Date:	April 28, 2015	/s/ Thomas M. Herzog
		Thomas M. Herzog
		Senior Vice President and Chief Financial Officer (Principal Financial Officer)

EX-32.3

EXHIBIT 32.3

CERTIFICATION

In connection with the periodic report of United Dominion Realty, L.P. (the “Operating Partnership”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Thomas W. Toomey, Chief Executive Officer and President of UDR, Inc., the general partner of the Operating Partnership, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership at the dates and for the periods indicated.

Date:	April 28, 2015	/s/ Thomas W. Toomey
		Thomas W. Toomey
		Chief Executive Officer and President of UDR, Inc. (Principal Executive Officer),
		general partner of United Dominion Realty, L.P.

EX-32.4

EXHIBIT 32.4

CERTIFICATION

In connection with the periodic report of United Dominion Realty, L.P. (the “Operating Partnership”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Thomas M. Herzog, Senior Vice President and Chief Financial Officer of UDR, Inc., the general partner of the Operating Partnership, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership at the dates and for the periods indicated.

Date:	April 28, 2015	/s/ Thomas M. Herzog
		Thomas M. Herzog
		Senior Vice President and Chief Financial Officer of UDR, Inc. (Principal Financial Officer),
		general partner of United Dominion Realty, L.P.

XML

Significant Accounting Policies (UNITED DOMINION REALTY, L.P.) (Policies)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Company on January 1, 2017; early adoption is not permitted. The Company has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Revenue and real estate sales gain recognition

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Company recognizes interest income, management and other fees and incentives when earned, and the amounts are fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we retain. The Company recognizes any deferred gain when the property is sold to a third party. In transactions accounted for by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire propert

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to stockholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Company’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges, (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) into earnings, and the allocation of other comprehensive income/(loss) to redeemable noncontrolling interests. The (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 10, Derivatives and Hedging Activity, for further discussion. The allocation of other comprehensive income/(loss) to redeemable noncontrolling interests was $(225,000) and $56,000 during the three months endedMarch 31, 2015 and 2014, respectively.

Income taxes

Income Taxes

Due to the structure of the Company as a REIT and the nature of the operations for the operating properties, no provision for federal income taxes has been provided for at UDR. Historically, the Company has generally incurred only state and local excise and franchise taxes. UDR has elected for certain consolidated subsidiaries to be treated as taxable REIT subsidiaries (“TRS”), primarily those engaged in development activities.

Income taxes for our TRS are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. The Company’s deferred tax assets are generally the result of differing depreciable lives on capitalized assets and timing of expense recognition for certain accrued liabilities. As of March 31, 2015, UDR’s net deferred tax asset was $7.6 million (net of a valuation allowance of less than $0.1 million), which is included in Other assets on the Consolidated Balance Sheets.

GAAP defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. GAAP also provides guidance on derecognition, classification, interest and penalties, accounting for interim periods, disclosure and transition.

The Company recognizes its tax positions and evaluates them using a two-step process. First, UDR determines whether a tax position is more likely than not (greater than 50 percent probability) to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Second, the Company will determine the amount of benefit to recognize and record the amount that is more likely than not to be realized upon ultimate settlement.

UDR had no material unrecognized tax benefit, accrued interest or penalties at March 31, 2015. UDR and its subsidiaries are subject to federal income tax as well as income tax of various state and local jurisdictions. The tax years 2010 through 2013 remain open to examination by tax jurisdictions to which we are subject. When applicable, UDR recognizes interest and/or penalties related to uncertain tax positions in Tax benefit/(expense), net on the Consolidated Statements of Operations.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Operating Partnership on January 1, 2017; early adoption is not permitted. The Operating Partnership has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Earnings Per Share, Policy [Policy Text Block]

Income/(Loss) Per Operating Partnership Unit

Basic income/(loss) per OP Unit is computed by dividing net income/(loss) attributable to general and limited partner unitholders by the weighted average number of general and limited partner units outstanding during the year. Diluted income/(loss) per OP Unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units or resulted in the issuance of OP Units and then shared in the income/(loss) of the Operating Partnership.

Revenue and real estate sales gain recognition

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Operating Partnership recognizes interest income, fees and incentives when earned, fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we or our General Partner retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we or our General Partner retain. The Operating Partnership recognizes any deferred gain when the property is sold to a third party. In transactions accounted by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to unitholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Operating Partnership’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges and (gain)/loss reclassified from other comprehensive income/(loss) into earnings. The (gain)/loss reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 7, Derivatives and Hedging Activity, for further discussion.

Income taxes

Income Taxes

The taxable income or loss of the Operating Partnership is reported on the tax returns of the partners. Accordingly, no provision has been made in the accompanying financial statements for federal or state income taxes on income that is passed through to the partners. However, any state or local revenue, excise or franchise taxes that result from the operating activities of the Operating Partnership are recorded at the entity level. The Operating Partnership’s tax returns are subject to examination by federal and state taxing authorities. Net income for financial reporting purposes differs from the net income for income tax reporting purposes primarily due to temporary differences, principally real estate depreciation and the tax deferral of certain gains on property sales. The differences in depreciation result from differences in the book and tax basis of certain real estate assets and the differences in the methods of depreciation and lives of the real estate assets.

The Operating Partnership evaluates the accounting and disclosure of tax positions taken or expected to be taken in the course of preparing the Operating Partnership’s tax returns to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet the more-likely-than-not threshold would be recorded as a tax benefit or expense in the current year. Management of the Operating Partnership is required to analyze all open tax years, as defined by the statute of limitations, for all major jurisdictions, which include federal and certain states. The Operating Partnership has no examinations in progress and none are expected at this time.

Management of the Operating Partnership has reviewed all open tax years (2010 through 2013) of tax jurisdictions and concluded there is no tax liability resulting from unrecognized tax benefits relating to uncertain income tax positions taken or expected to be taken in future tax returns.

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Reportable Segment (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations

The following table details rental income and NOI from continuing and discontinued operations for UDR’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net Income/(Loss) Attributable to UDR, Inc. in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	67,857		$	63,267
Mid-Atlantic Region	42,795			42,049
Southeast Region	27,829			26,497
Northeast Region	20,892			19,803
Southwest Region	14,107			13,467
Non-Mature Communities/Other	33,567			29,317
Total consolidated rental income	$	207,047		$	194,400
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	50,228		$	45,408
Mid-Atlantic Region	29,288			28,835
Southeast Region	18,547			17,872
Northeast Region	15,566			14,546
Southwest Region	8,536			8,358
Non-Mature Communities/Other	21,410			17,105
Total consolidated NOI	143,575			132,124
Reconciling items:
Joint venture management and other fees	12,706			3,687
Property management	(5,694		)	(5,346		)
Other operating expenses	(1,766		)	(1,935		)
Real estate depreciation and amortization	(88,777		)	(88,533		)
General and administrative	(12,152		)	(11,994		)
Casualty-related recoveries/(charges), net	(996		)	(500		)
Other depreciation and amortization	(1,623		)	(1,080		)
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Tax benefit/(expense), net	425			3,329
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	$	73,822		$	18,361

(a) Same-Store Community population consisted of 36,063 apartment homes.

Details of assets of UDR's reportable segments

The following table details the assets of UDR’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets:
Same-Store Communities:
West Region	$	2,626,770		$	2,620,242
Mid-Atlantic Region	1,536,389			1,533,993
Southeast Region	788,668			786,438
Northeast Region	1,078,431			1,076,656
Southwest Region	441,888			440,721
Non-Mature Communities/Other	1,981,502			1,925,209
Total assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Total assets — net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274			15,224
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Investment in and advances to unconsolidated joint ventures, net	763,540			718,226
Other assets	96,713			105,202
Total consolidated assets	$	6,858,511		$	6,846,534

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Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2015

Noncontrolling Interest [Abstract]

Redeemable noncontrolling interests in the Operating Partnership

The following table sets forth redeemable noncontrolling interests in the Operating Partnership for the following period (dollars in thousands):

Redeemable noncontrolling interests in the Operating Partnership, December 31, 2014	$	282,480
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership	29,696
Conversion of OP Units to Common Stock	(17		)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership	2,588
Distributions to redeemable noncontrolling interests in the Operating Partnership	(2,639		)
Allocation of other comprehensive income/(loss)	(225		)
Redeemable noncontrolling interests in the Operating Partnership, March 31, 2015	$	311,883

The following sets forth net income/(loss) attributable to common stockholders and transfers from redeemable noncontrolling interests in the Operating Partnership for the following periods (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Net income/(loss) attributable to common stockholders	$	72,891	$	17,430
Conversion of OP Units to UDR Common stock	17		—
Change in equity from net income/(loss) attributable to common stockholders and conversion of OP Units to UDR Common Stock	$	72,908	$	17,430

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Secured and Unsecured Debt (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Summary of short-term bank borrowings under unsecured commercial bank credit facility
Borrowings outstanding at end of period	$ 1,500		$ 1,900
Unsecured Commercial Bank Credit Facility [Member]
Summary of short-term bank borrowings under unsecured commercial bank credit facility
Total revolving credit facility	900,000		900,000
Weighted average daily borrowings during the period ended	356,043	291,761
Maximum daily borrowings during the period ended	449,500	625,000
Weighted average interest rate during the period ended	1.20%	1.20%
Interest rate at the end of the period	1.10%		1.10%
Unsecured Revolving Credit Facility due October 2015 [Member]
Summary of short-term bank borrowings under unsecured commercial bank credit facility
Borrowings outstanding at end of period	$ 389,000		$ 152,500

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Reportable Segments (UNITED DOMINION REALTY, L.P.) (Tables) (United Dominion Reality L.P. [Member])

3 Months Ended

Mar. 31, 2015

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

Reportable segments information

The following table details rental income and NOI from continuing and discontinued operations for the Operating Partnership’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net income/(loss) attributable to OP unitholders in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	47,815		$	44,238
Mid-Atlantic Region	17,249			17,246
Southeast Region	11,679			11,131
Northeast Region	15,072			14,268
Southwest Region	6,737			6,553
Non-Mature Communities/Other	11,543			8,934
Total consolidated rental income	$	110,095		$	102,370
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	35,277		$	32,089
Mid-Atlantic Region	11,466			11,565
Southeast Region	7,710			7,457
Northeast Region	11,572			10,638
Southwest Region	4,213			4,217
Non-Mature Communities/Other	7,877			6,451
Total consolidated NOI	78,115			72,417
Reconciling items:
Property management	(3,027		)	(2,815		)
Other operating expenses	(1,490		)	(1,436		)
Real estate depreciation and amortization	(44,478		)	(44,271		)
General and administrative	(5,639		)	(6,970		)
Casualty-related recoveries/(charges), net	(593		)	(500		)
Interest expense	(10,771		)	(10,014		)
Gain/(loss) on sale of real estate owned	24,623			24,402
Net (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Net income/(loss) attributable to OP unitholders	$	36,346		$	30,533

(a) Same-store consists of 19,209 apartment homes.

The following table details the assets of the Operating Partnership’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets
Same-Store Communities
West Region	$	1,690,647		$	1,686,127
Mid-Atlantic Region	714,425			713,093
Southeast Region	334,282			333,428
Northeast Region	778,378			777,376
Southwest Region	229,627			228,996
Non-Mature Communities/Other	501,436			499,750
Total assets	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Total assets - net book value	2,801,282			2,835,467
Reconciling items:
Cash and cash equivalents	826			502
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total consolidated assets	$	2,843,381		$	2,878,284

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Income/(Loss) Per Share (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Income/(loss) from continuing operations	$ 76,417,000	$ (5,195,000)
Gains/(loss) on sales of real estate, net of tax	0	24,294,000
(Income)/loss from continuing operations attributable to noncontrolling interest	(2,588,000)
Income/(loss) from continuing operations attributable to UDR, Inc.	73,822,000	18,445,000
Income/(loss) from continuing operations operations attributable to common stockholders	72,891,000	17,514,000
Income/(loss) from discontinued operations, net of tax	0	(87,000)
(Income)/loss from discontinued operations attributable to redeemable noncontrolling interest in the Operating Partnership	0	3,000
Income/(loss) from discontinued operations attributable to common stockholders	0	(84,000)
Net income/(loss)	76,417,000	19,012,000
Net (income)/loss attributable to noncontrolling interests	(7,000)	(4,000)
Net (income)/loss attributable to redeemable non-controlling interests in Operating Partnership	2,588,000	647,000
Net (loss)/income attributable to common stockholders	72,891,000	17,430,000
Denominator for earnings per share - basic and diluted:
Weighted average common shares outstanding	258,100	251,213
Non-vested restricted stock rewards	(1,266,000)	(1,036,000)
Weighted average number of common shares outstanding — basic	256,834	250,177
Incremental shares issuable for assumed conversion of: Stock options and unvested restricted stock	(1,828)	(1,645)
Weighted average number of common shares outstanding — diluted	258,662	251,822
Income/(loss) from continuing operations attributable to common stockholders	$ 0.28	$ 0.07
Net income/(loss) attributable to common stockholders	$ 0.28	$ 0.07
Income/(loss) from discontinued operations attributable to common stockholders,	$ 0.00	$ 0.00
Income/(loss) from continuing operations attributable to common stockholders,	$ 0.28	$ 0.07
Income from discontinued operations attributable to common stockholders	$ 0.00	$ 0.00
Net income/(loss) attributable to common stockholders	$ 0.28	$ 0.07
OP Units [Member]
Denominator for earnings per share - basic and diluted:
Antidilutive securities	9,165		9,319
Convertible Preferred Stock [Member]
Denominator for earnings per share - basic and diluted:
Antidilutive securities	3,036		3,036
Stock options and unvested restricted stock [Member]
Denominator for earnings per share - basic and diluted:
Antidilutive securities	1,828		1,645
Series E Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Distributions to preferred stockholders - Series E (Convertible)	931,000	931,000
RedeemableNoncontrollingInterest [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
(Income)/loss from continuing operations attributable to noncontrolling interest		$ (650,000)

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Debt (UNITED DOMINION REALTY, L.P.) (Tables)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

Secured debt instruments

The following is a summary of our secured and unsecured debt at March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Secured Debt:
Fixed Rate Debt
Mortgage notes payable (a)	$	411,271	$	401,210	5.49	%	1.4	7
Fannie Mae credit facilities (b)	567,169		568,086		5.12	%	3.8	22
Total fixed rate secured debt	978,440		969,296		5.28	%	2.8	29
Variable Rate Debt
Mortgage notes payable	31,337		31,337		1.94	%	1.8	1
Tax-exempt secured notes payable (c)	94,700		94,700		0.76	%	7.9	2
Fannie Mae credit facilities (b)	266,196		266,196		1.62	%	4.9	7
Total variable rate secured debt	392,233		392,233		1.44	%	5.4	10
Total Secured Debt	1,370,673		1,361,529		4.18	%	3.5	39
Unsecured Debt:
Commercial Banks
Borrowings outstanding under an unsecured credit facility due December 2017 (d) (f)	389,000		152,500		1.08	%	2.7
Senior Unsecured Notes
5.25% Medium-Term Notes due January 2015 (net of discounts of $0 and $6, respectively) (e)	—		325,169		—	%	—
5.25% Medium-Term Notes due January 2016	83,260		83,260		5.25	%	0.8
6.21% Medium-Term Notes due July 2016	12,865		—		6.21	%	1.3
4.25% Medium-Term Notes due June 2018 (net of discounts of $1,358 and $1,465, respectively) (f)	298,642		298,535		4.25	%	3.2
1.70% Term Notes due June 2018 (f)	215,000		215,000		1.70	%	3.2
1.53% Term Notes due June 2018 (f)	100,000		100,000		1.53	%	3.2
1.32% Term Notes due June 2018 (f)	35,000		35,000		1.32	%	3.2
3.70% Medium-Term Notes due October 2020 (net of discounts of $44 and $46, respectively) (f)	299,956		299,954		3.70	%	5.5
4.63% Medium-Term Notes due January 2022 (net of discounts of $2,433 and $2,523, respectively) (f)	397,567		397,477		4.63	%	6.8
3.75% Medium-Term Notes due July 2024 (net of discount of $964 and $990, respectively) (f)	299,036		299,010		3.75	%	9.3
8.50% Debentures due September 2024	15,644		15,644		8.50	%	9.5
Other	26		27		N/A		N/A
Total Unsecured Debt	2,145,996		2,221,576		3.26	%	4.9
Total Debt	$	3,516,669	$	3,583,105	3.62	%	4.4

Secured credit facilities

Further information related to these credit facilities is as follows (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	833,365		$	834,282
Weighted average borrowings during the period ended	833,697			835,873
Maximum daily borrowings during the period ended	834,003			837,564
Weighted average interest rate during the period ended	4.0		%	4.1		%
Weighted average interest rate at the end of the period	4.0		%	4.0		%

Aggregate maturities of secured debt

The aggregate maturities, including amortizing principal payments of unsecured and secured debt, of total debt for the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

Year	Total Fixed Secured Debt		Total Variable Secured Debt		Total Secured Debt		Total Unsecured Debt (a)		Total Debt
2015	$	194,779	$	—	$	194,779	$	114	$	194,893
2016	148,223		—		148,223		94,468		242,691
2017	177,882		96,337		274,219		389,000		663,219
2018	121,685		104,787		226,472		648,444		874,916
2019	245,871		67,700		313,571		—		313,571
Thereafter	90,000		123,409		213,409		1,013,970		1,227,379
Total	$	978,440	$	392,233	$	1,370,673	$	2,145,996	$	3,516,669

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

Secured debt instruments

Secured debt consists of the following as of March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Fixed Rate Debt
Mortgage notes payable	$	376,207	$	378,371	5.48	%	1.4	5
Fannie Mae credit facilities	333,735		333,828		4.90	%	4.3	10
Total fixed rate secured debt	709,942		712,199		5.21	%	2.8	15
Variable Rate Debt
Tax-exempt secured note payable	27,000		27,000		0.77	%	17.0	1
Fannie Mae credit facilities	192,760		192,760		1.85	%	5.7	5
Total variable rate secured debt	219,760		219,760		1.72	%	7.1	6
Total Secured Debt	$	929,702	$	931,959	4.38	%	3.8	21

Secured credit facilities

The following information relates to the credit facilities allocated to the Operating Partnership (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	526,495		$	526,588
Weighted average borrowings during the period ended	526,705			527,592
Maximum daily borrowings during the period	526,898			528,659
Weighted average interest rate during the period ended	4.0		%	4.1		%
Interest rate at the end of the period	4.0		%	4.0		%

Aggregate maturities of secured debt

The aggregate maturities of the Operating Partnership’s secured debt due during each of the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

	Fixed				Variable
Year	Mortgage Notes Payable		Secured Credit Facilities		Tax-Exempt Secured Notes Payable		Secured Credit Facilities		Total
2015	$	190,582	$	274	$	—	$	—	$	190,856
2016	131,021		385		—		—		131,406
2017	913		15,640		—		6,566		23,119
2018	968		111,052		—		96,974		208,994
2019	52,723		123,095		—		—		175,818
Thereafter	—		83,289		27,000		89,220		199,509
Total	$	376,207	$	333,735	$	27,000	$	192,760	$	929,702

XML

Capital Structure (UNITED DOMINION REALTY, L.P.) (United Dominion Reality L.P. [Member])

3 Months Ended

Mar. 31, 2015

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

CAPITAL STRUCTURE

CAPITAL STRUCTURE

General Partnership Units

The General Partner has complete discretion to manage and control the operations and business of the Operating Partnership, which includes but is not limited to the acquisition and disposition of real property, construction of buildings and making capital improvements, and the borrowing of funds from outside lenders or UDR and its subsidiaries to finance such activities. The General Partner can generally authorize, issue, sell, redeem or purchase any OP Unit or securities of the Operating Partnership without the approval of the limited partners. The General Partner can also approve, with regard to the issuances of OP Units, the class or one or more series of classes, with designations, preferences, participating, optional or other special rights, powers and duties including rights, powers and duties senior to limited partnership interests without approval of any limited partners except holders of Class A Limited Partnership Units. There were 110,883 General Partnership units outstanding at March 31, 2015 and December 31, 2014, all of which were held by UDR.

Limited Partnership Units

As of March 31, 2015 and December 31, 2014, there were 183,167,815 limited partnership units outstanding, of which 1,873,332 were Class A Limited Partnership Units. UDR owned 174,002,876, or 95.0% of, and 174,002,342, or 95.0% of, OP Units outstanding at March 31, 2015 and December 31, 2014, respectively, of which 121,661 were Class A Limited Partnership Units. The remaining 9,164,939, or 5.0% of, and 9,165,473, or 5.0% of, OP Units outstanding, were held by non-affiliated partners at March 31, 2015 and December 31, 2014, respectively, of which 1,751,671 were Class A Limited Partnership Units.

Subject to the terms of the Operating Partnership Agreement, the limited partners have the right to require the Operating Partnership to redeem all or a portion of the OP Units held by the limited partner at a redemption price equal to and in the form of the Cash Amount (as defined in the Operating Partnership Agreement), provided that such OP Units have been outstanding for at least one year. UDR, as general partner of the Operating Partnership may, in its sole discretion, purchase the OP Units by paying to the limited partner either the Cash Amount or the REIT Share Amount (generally one share of common stock of UDR for each OP Unit), as defined in the Operating Partnership Agreement.

The non-affiliated limited partners’ capital is adjusted to redemption value at the end of each reporting period with the corresponding offset against UDR’s limited partner capital account based on the redemption rights noted above. The aggregate value upon redemption of the then-outstanding OP Units held by limited partners was $311.9 million and $282.5 million as of March 31, 2015 and December 31, 2014, respectively, based on the value of UDR’s common stock at each period end. A limited partner has no right to receive any distributions from the Operating Partnership on or after the date of redemption of its OP Units.

Class A Limited Partnership Units

Class A Limited Partnership Units have a cumulative, annual, non-compounded preferred return, which is equal to 8% based on a value of $16.61 per Class A Limited Partnership Unit.

Holders of the Class A Limited Partnership Units exclusively possess certain voting rights. The Operating Partnership may not do the following without approval of the holders of the Class A Limited Partnership Units: (i) increase the authorized or issued amount of Class A Limited Partnership Units, (ii) reclassify any other partnership interest into Class A Limited Partnership Units, (iii) create, authorize or issue any obligations or security convertible into or the right to purchase any Class A Limited Partnership units, (iv) enter into a merger or acquisition, or (v) amend or modify the Agreement of Limited Partnership of the Operating Partnership in a manner that adversely affects the relative rights, preferences or privileges of the Class A Limited Partnership Units.

Allocation of Profits and Losses

Profit of the Operating Partnership is allocated in the following order: (i) to the General Partner and the Limited Partners in proportion to and up to the amount of cash distributions made during the year, and (ii) to the General Partner and Limited Partners in accordance with their percentage interests. Losses and depreciation and amortization expenses, non-recourse liabilities are allocated to the General Partner and Limited Partners in accordance with their percentage interests. Losses allocated to the Limited Partners are capped to the extent that such an allocation would not cause a deficit in the Limited Partners’ capital account. Such losses are, therefore, allocated to the General Partner. If any Partner’s capital balance were to fall into a deficit, any income and gains are allocated to each Partner sufficient to eliminate its negative capital balance.

XML

Noncontrolling Interests (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests in the Operating Partnership	$ 311,883,000			$ 282,480,000
Net Income (Loss) Available to Common Stockholders, Basic	72,891,000	17,430,000
Change in equity from net income(loss) attributable to common stockholders and conversion of OP Units to UDR Common Stock	72,908,000		17,430,000
Redeemable noncontrolling interests in the Operating Partnership
Mark to market adjustment to redeemable noncontrolling interests in the Operating Partnership	29,696,000
Adjustment for conversion of noncontrolling interest of unitholders in Operating Partnership	17,000		0
Net (income)/loss attributable to redeemable non-controlling interests in Operating Partnership	2,588,000	647,000
Distributions to redeemable noncontrolling interests in the Operating Partnership	2,639,000
Redeemable non-controlling interests in operating partnership	311,883,000
Net income attributable to non-controlling interests	$ 7,000	$ 4,000

XML

Secured and Unsecured Debt (Details Textual 1) (USD $)	0 Months Ended	3 Months Ended
	Sep. 26, 2013	Mar. 31, 2015	Dec. 31, 2014
Unsecured Debt (Textual) [Abstract]
Credit facility interest rate		100
Line of Credit Facility, Commitment Fee Description		15
Line of Credit Facility, Amount Outstanding		$ 1,500,000	$ 1,900,000
Unamortized discount		7,000,000	6,700,000
Debt Instrument, Interest Rate During Period		3.62%
ThreePointSevenTermNotesDueOctober2020 [Member]
Unsecured Debt (Textual) [Abstract]
Debt Instrument, Maturity Date	Oct. 31, 2020
Senior Notes		299,956,000	299,954,000
Debt Instrument, Interest Rate During Period		3.70%
1.67% Term Notes due December 2016 [Member]
Unsecured Debt (Textual) [Abstract]
Debt Instrument, Maturity Date		Jun. 01, 2018
Senior Notes		35,000,000	35,000,000
Debt Instrument, Interest Rate During Period		1.32%
2.90% Term Notes due January 2016 [Member]
Unsecured Debt (Textual) [Abstract]
Senior Notes		215,000,000	215,000,000
Debt Instrument, Interest Rate During Period		1.70%
4.63% Medium-Term Notes due January 2022 [Member]
Unsecured Debt (Textual) [Abstract]
Unamortized discount		2,433,000	2,523,000
Senior Notes		397,567,000	397,477,000
Debt Instrument, Interest Rate During Period		4.63%
2.68% Term Notes due December 2016 [Member]
Unsecured Debt (Textual) [Abstract]
Senior Notes		100,000,000	100,000,000
Debt Instrument, Interest Rate During Period		1.53%
UDR Bank Credit Facility [Member]
Unsecured Debt (Textual) [Abstract]
Total revolving credit facility		900,000,000	900,000,000
Increase in maximum borrowing capacity of unsecured revolving credit facility		$ 1,450,000,000
Interest rate		1.10%	1.10%

XML

Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Interest Rate Products [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset Designated as Hedging Instrument, Fair Value	$ 28	$ 86
Interest Rate Products [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset Not Designated as Hedging Instrument, Fair Value	1	2
Interest Rate Products [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liability Designated as Hedging Instrument, Fair Value	17,112	10,368
Interest Rate Products [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liability Not Designated as Hedging Instrument, Fair Value	0	0
United Dominion Reality L.P. [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset Designated as Hedging Instrument, Fair Value	17	39
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset Designated as Hedging Instrument, Fair Value	16	37
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset Not Designated as Hedging Instrument, Fair Value	1	2
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liability Not Designated as Hedging Instrument, Fair Value	$ 0	$ 0

XML

Consolidation and Basis of Presentation (UNITED DOMINION REALTY, L.P.) (Details)	3 Months Ended
	Mar. 31, 2015 Apartment_Homes Communities Markets	Mar. 31, 2014	Dec. 31, 2014
Entity Information [Line Items]
Number of Real Estate Properties	138
Number of apartments owned (in apartments homes)	39,956
Operating Partnership outstanding units	183,278,698
United Dominion Reality L.P. [Member]
Entity Information [Line Items]
Rental revenues percent of General Partner's consolidated rental revenues	53.00%	53.00%
Number of Real Estate Properties	68
Number of markets operating within (in markets)	17
Number of apartments owned (in apartments homes)	20,809
OP units outstanding related to general partner	110,883		110,883
OP units outstanding related to limited partner	183,167,815		183,167,815
Non-affiliated Partners [Member]
Entity Information [Line Items]
OP units outstanding related to limited partner	9,164,939		9,165,473
Percentage of units outstanding in Heritage OP	5.00%		5.00%
Limited Partner [Member]
Entity Information [Line Items]
Percentage of units outstanding in Heritage OP	95.00%
General Partner [Member]
Entity Information [Line Items]
OP units outstanding related to limited partner	174,113,759
Non-affiliated Partners [Member]
Entity Information [Line Items]
OP units outstanding related to limited partner	9,164,939
Percentage of units outstanding in Heritage OP	5.00%

XML

Debt (UNITED DOMINION REALTY, L.P.) (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
2014	$ 194,893
2015	242,691
2016	663,219
2017	874,916
2018	313,571
Thereafter	1,227,379
Total	1,370,673	1,361,529
United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
2014	190,856
2015	131,406
2016	23,119
2017	208,994
2018	175,818
Thereafter	199,509
Total	929,702	931,959
United Dominion Reality L.P. [Member] | Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
2014	190,582
2015	131,021
2016	913
2017	968
2018	52,723
Thereafter	0
Total	376,207
United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
2014	274
2015	385
2016	15,640
2017	111,052
2018	123,095
Thereafter	83,289
Total	333,735
United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
2014	0
2015	0
2016	6,566
2017	96,974
2018	0
Thereafter	89,220
Total	192,760
United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
2014	0
2015	0
2016	0
2017	0
2018	0
Thereafter	27,000
Total	$ 27,000

XML

Derivatives and Hedging Activity (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Offsetting Derivative Assets [Abstract]
Gross Amounts Offset in the Consolidated Balance Sheets	$ 0	$ 0
Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)	29	88
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	(27)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	29	61
Offsetting Derivative Liabilities [Abstract]
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)	17,112	10,368
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	(27)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	17,112	10,341
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Interest Rate Contracts [Member]
Offsetting Derivative Liabilities [Abstract]
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)	$ 17,112	$ 10,368

XML

Fair Value of Derivatives and Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable, net	$ 15,494	$ 14,369
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivative Asset	29	88
Derivative Liability	17,112	10,368
Secured debt instruments - variable rate
Borrowings outstanding	1,500	1,900
Unsecured debt instruments
Redeemable Noncontrolling Interest, Equity, Carrying Amount	311,883
Redeemable noncontrolling interests in the Operating Partnership (d)	311,883	282,480
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable, net	15,494	14,369
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	15,523	14,457
Unsecured debt instruments
Total liabilities	3,533,781	3,593,473
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivative Liability	17,112	10,368
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Senior Unsecured Notes [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	1,756,996	2,069,076
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Notes receivable (a)	15,923	14,808
Total assets	15,952	14,896
Unsecured debt instruments
Total liabilities	3,676,255	3,721,512
Redeemable noncontrolling interests in the Operating Partnership (d)	311,883	282,480
Estimate of Fair Value, Fair Value Disclosure [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	29	88
Derivatives - Interest rate contracts (b)	17,112	10,368
Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	425,969	415,663
Secured debt instruments - variable rate
Secured debt instruments - variable rate	31,337	31,337
Estimate of Fair Value, Fair Value Disclosure [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	94,700	94,700
Estimate of Fair Value, Fair Value Disclosure [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	599,580	606,623
Secured debt instruments - variable rate
Secured debt instruments - variable rate	266,196	266,196
Unsecured debt instruments
Unsecured debt instruments (c)		152,500
Estimate of Fair Value, Fair Value Disclosure [Member] | Senior Unsecured Notes [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	1,852,361	2,144,125
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Notes receivable (a)	0	0
Total assets	0	0
Unsecured debt instruments
Total liabilities	0	0
Redeemable noncontrolling interests in the Operating Partnership (d)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivatives - Interest rate contracts (b)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Commercial bank [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Senior Unsecured Notes [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Notes receivable (a)	0	0
Total assets	29	88
Unsecured debt instruments
Total liabilities	17,112	10,368
Redeemable noncontrolling interests in the Operating Partnership (d)	311,883	282,480
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	29	88
Derivatives - Interest rate contracts (b)	17,112	10,368
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Commercial bank [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Senior Unsecured Notes [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Notes receivable (a)	15,923	14,808
Total assets	15,923	14,808
Unsecured debt instruments
Total liabilities	3,659,143	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivatives - Interest rate contracts (b)	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	425,969	415,663
Secured debt instruments - variable rate
Secured debt instruments - variable rate	31,337	31,337
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	94,700	94,700
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	599,580	606,623
Secured debt instruments - variable rate
Secured debt instruments - variable rate	266,196	266,196
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Commercial bank [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	389,000	152,500
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Senior Unsecured Notes [Member] | Fair Value, Measurements, Recurring [Member]
Unsecured debt instruments
Unsecured debt instruments (c)	1,852,361	2,144,125
Unsecured Revolving Credit Facility due October 2015 [Member]
Secured debt instruments - variable rate
Borrowings outstanding	389,000	152,500
Variable Rate Debt [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	392,233	392,233
Variable Rate Debt [Member] | Tax Exempt Notes Payable [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	94,700	94,700
Variable Rate Debt [Member] | Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	266,196	266,196
Variable Rate Debt [Member] | Mortgages Notes Payable [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	31,337	31,337
Fixed Rate Debt [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	978,440	969,296
Fixed Rate Debt [Member] | Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	567,169	568,086
Fixed Rate Debt [Member] | Mortgages Notes Payable [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Secured debt including debt on real estate held for sale	$ 411,271	$ 401,210

XML

Derivatives and Hedging Activity (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative, Collateral, Obligation to Return Cash	$ 0			$ 0
Derivatives And Hedging Activity (Textual) [Abstract]
Cash flow hedge ineffectiveness in earnings materiality	0	0
Estimated additional accumulated other comprehensive Income/(Loss) transferred to interest expense	6,300,000
Derivative instruments not designated as hedging instruments, gain (loss), net	(1,000)		0
Payment required to pay for contract termination	17,500,000
Other Income Expense [Member] | Interest Rate Contracts [Member]
Derivatives And Hedging Activity (Textual) [Abstract]
Derivative instruments not designated as hedging instruments, gain (loss), net	$ 0	0

XML

Debt (UNITED DOMINION REALTY, L.P.) (Details Textual) (USD $)	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Sep. 26, 2013	Jun. 27, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Borrowings outstanding	$ 1,500,000			$ 1,900,000
Weighted average interest rate	3.62%
Unamortized fair market adjustment	7,000,000			6,700,000
UDR Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total revolving credit facility	900,000,000			900,000,000
Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	978,440,000			969,296,000
Weighted average interest rate	5.28%
Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	392,233,000			392,233,000
Weighted average interest rate	1.44126%
Fannie Mae [Member]
Debt Instrument [Line Items]
Borrowings outstanding	833,365,000			834,282,000
Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	May 01, 2017
Debt Instrument, Maturity Date Range, End	Jul. 01, 2023
Debt, Weighted Average Interest Rate	5.12%
Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate at Period End	1.62%
Mortgages [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	Dec. 09, 2015
Weighted average interest rate	5.49%
Notes payable minimum interest rates range	3.43%
Notes payable maximum interest rates range	6.16%
Debt Instrument, Maturity Date Range, End	May 01, 2019
Mortgages [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.94%
Tax Exempt Notes Payable [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate	0.76%
Unsecured Revolving Credit Facility due October 2015 [Member]
Debt Instrument [Line Items]
Borrowings outstanding	389,000,000			152,500,000
Weighted average interest rate	1.08%
2.90% Term Notes due January 2016 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.70%
Five Point Two Five Percent, Medium Term Notes, Due January 2016 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	5.25%
4.25% Medium-Term Notes due June 2018 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.25%
Unamortized fair market adjustment	1,358,000			1,465,000
Three point seven percent medium term note due October 2020 [Member]
Debt Instrument [Line Items]
Unamortized fair market adjustment	44,000			46,000
ThreePointSevenTermNotesDueOctober2020 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	3.70%
Debt Instrument, Maturity Date		Oct. 31, 2020
4.63% Medium-Term Notes due January 2022 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.63%
Unamortized fair market adjustment	2,433,000			2,523,000
3.75 MTN Due July 2024 [Member]
Debt Instrument [Line Items]
Weighted average interest rate	3.75%
Unamortized fair market adjustment	964,000			990,000
Debt Instrument, Maturity Date			Jul. 01, 2024
United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Premium	5,200,000			6,200,000
Secured debt including debt on real estate held for sale	929,702,000			931,959,000
Weighted average interest rate	4.38%
United Dominion Reality L.P. [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	709,942,000			712,199,000
Weighted average interest rate	5.21%
United Dominion Reality L.P. [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	219,760,000			219,760,000
Weighted average interest rate	1.72%
United Dominion Reality L.P. [Member] | Fannie Mae [Member]
Debt Instrument [Line Items]
Borrowings outstanding	526,495,000			526,588,000
United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.90%
United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.85%
United Dominion Reality L.P. [Member] | Mortgages [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	376,207,000			378,371,000
Weighted average interest rate	5.48%
Notes payable maximum interest rates range	5.94%
United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	27,000,000			27,000,000
Weighted average interest rate	0.77%
Debt Instrument, Maturity Date Range, End	Mar. 01, 2032
United Dominion Reality L.P. [Member] | 2.90% Term Notes due January 2016 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, End	Jun. 06, 2018
United Dominion Reality L.P. [Member] | 2.90% Term Notes due January 2016 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	250,000,000
United Dominion Reality L.P. [Member] | 1.68% Term Notes due December 2016 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	100,000,000
United Dominion Reality L.P. [Member] | Five Point Two Five Percent, Medium Term Notes, Due January 2016 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, End	Jun. 06, 2018
United Dominion Reality L.P. [Member] | 4.25% Medium-Term Notes due June 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, End	Jun. 01, 2018
United Dominion Reality L.P. [Member] | 4.25% Medium-Term Notes due June 2018 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	300,000,000
United Dominion Reality L.P. [Member] | Three point seven percent medium term note due October 2020 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	300,000,000
United Dominion Reality L.P. [Member] | 4.63% Medium-Term Notes due January 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, End	Jan. 01, 2022
United Dominion Reality L.P. [Member] | 4.63% Medium-Term Notes due January 2022 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	400,000,000
United Dominion Reality L.P. [Member] | 3.75 MTN Due July 2024 [Member] | Financial Guarantee [Member]
Debt Instrument [Line Items]
Guarantor borrowing capacity	300,000,000
Mortgages [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	411,271,000			401,210,000
Mortgages [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	31,337,000			31,337,000
Mortgages [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Fixed Rate Secured Debt Instruments Fair Value	376,207,000			378,371,000
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	567,169,000			568,086,000
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	266,196,000			266,196,000
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Variable Rate Secured Debt Instruments Fair Value	192,760,000			192,760,000
Fixed Rate Secured Debt Instruments Fair Value	333,735,000			333,828,000
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	333,735,000			333,828,000
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Secured debt including debt on real estate held for sale	$ 192,760,000			$ 192,760,000

XML

Secured and Unsecured Debt (Details 5) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Aggregate maturities of unsecured debt
2014	$ 194,893
2015	242,691
2016	663,219
2017	874,916
2018	313,571
Thereafter	1,227,379
Unsecured Debt, Total	2,145,996	2,221,576
Long-term Debt	3,516,669	3,583,105
Secured Debt [Member]
Aggregate maturities of unsecured debt
2014	194,779
2015	148,223
2016	274,219
2017	226,472
2018	313,571
Thereafter	213,409
Long-term Debt	1,370,673
Unsecured Debt [Member]
Aggregate maturities of unsecured debt
2014	114
2015	94,468
2016	389,000
2017	648,444
2018	0
Thereafter	1,013,970
Unsecured Debt, Total	2,145,996	2,221,576
Long-term Debt	2,145,996
Fixed Rate Debt [Member] | Secured Debt [Member]
Aggregate maturities of unsecured debt
2014	194,779
2015	148,223
2016	177,882
2017	121,685
2018	245,871
Thereafter	90,000
Long-term Debt	978,440
Variable Rate Debt [Member] | Secured Debt [Member]
Aggregate maturities of unsecured debt
2014	0
2015	0
2016	96,337
2017	104,787
2018	67,700
Thereafter	123,409
Long-term Debt	$ 392,233

XML

Income/(Loss) Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

EARNINGS/(LOSS) PER SHARE

/(LOSS) PER SHARE

The following table sets forth the computation of basic and diluted income/(loss) per share for the periods presented (dollars and shares in thousands, except per share data):

	Three Months Ended
	March 31,
	2015			2014
Numerator for income/(loss) per share:
Income/(loss) from continuing operations	$	76,417		$	(5,195	)
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
(Income)/loss from continuing operations attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(650		)
(Income)/loss from continuing operations attributable to noncontrolling interests	(7		)	(4		)
Income/(loss) from continuing operations attributable to UDR, Inc.	73,822			18,445
Distributions to preferred stockholders - Series E (Convertible)	(931		)	(931		)
Income/(loss) from continuing operations attributable to common stockholders	$	72,891		$	17,514
Income/(loss) from discontinued operations, net of tax	$	—		$	(87	)
(Income)/loss from discontinued operations attributable to redeemable noncontrolling interests in the Operating Partnership	—			3
Income/(loss) from discontinued operations attributable to common stockholders	$	—		$	(84	)
Net income/(loss) attributable to common stockholders	$	72,891		$	17,430
Denominator for income/(loss) per share:
Weighted average common shares outstanding	258,100			251,213
Non-vested restricted stock awards	(1,266		)	(1,036		)
Denominator for basic income/(loss) per share	256,834			250,177
Incremental shares issuable from assumed conversion of stock options and unvested restricted stock	1,828			1,645
Denominator for diluted income/(loss) per share	258,662			251,822
Income/(loss) per weighted average common share-basic:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07
Income/(loss) per weighted average common share-diluted:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07

Basic income/(loss) per common share is computed based upon the weighted average number of common shares outstanding. Diluted income/(loss) per share is computed based upon the weighted average number of common shares outstanding plus the common shares issuable from the assumed conversion of the OP Units, convertible preferred stock, stock options, and restricted stock. Only those instruments having a dilutive impact on our basic income/(loss) per share are included in diluted income/(loss) per share during the periods.

The following table sets forth the additional shares of common stock outstanding by equity instrument if converted to common stock for each of the three months endedMarch 31, 2015 and 2014(shares in thousands):

	Three Months Ended
	March 31,
	2015	2014
OP Units	9,165	9,319
Preferred stock	3,036	3,036
Stock options and unvested restricted stock	1,828	1,645

XML

Fair Value of Derivatives and Financial Instruments (UNITED DOMINION REALTY, L.P.) (Tables)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

Estimated fair values

The estimated fair values of the Company’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	15,494	$	15,923	$	—	$	—	$	15,923
Derivatives - Interest rate contracts (b)	29		29		—		29		—
Total assets	$	15,523	$	15,952	$	—	$	29	$	15,923
Derivatives - Interest rate contracts (b)	$	17,112	$	17,112	$	—	$	17,112	$	—
Secured debt instruments - fixed rate: (c)
Mortgage notes payable	411,271		425,969		—		—		425,969
Fannie Mae credit facilities	567,169		599,580		—		—		599,580
Secured debt instruments - variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	389,000		389,000		—		—		389,000
Senior unsecured notes	1,756,996		1,852,361		—		—		1,852,361
Total liabilities	$	3,533,781	$	3,676,255	$	—	$	17,112	$	3,659,143
Redeemable noncontrolling interests in the Operating Partnership (d)	$	311,883	$	311,883	$	—	$	311,883	$	—

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	14,369	$	14,808	$	—	$	—	$	14,808
Derivatives- Interest rate contracts (b)	88		88		—		88		—
Total assets	$	14,457	$	14,896	$	—	$	88	$	14,808
Derivatives- Interest rate contracts (b)	$	10,368	$	10,368	$	—	$	10,368	$	—
Secured debt instruments- fixed rate: (c)
Mortgage notes payable	401,210		415,663		—		—		415,663
Fannie Mae credit facilities	568,086		606,623		—		—		606,623
Secured debt instruments- variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	152,500		152,500		—		—		152,500
Senior unsecured notes	2,069,076		2,144,125		—		—		2,144,125
Total liabilities	$	3,593,473	$	3,721,512	$	—	$	10,368	$	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	$	282,480	$	282,480	$	—	$	282,480	$	—

(a) See Note 2, Significant Accounting Policies.

(b) See Note 10, Derivatives and Hedging Activity.

(c) See Note 6, Secured and Unsecured Debt.

(d) See Note 8, Noncontrolling Interests.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

Estimated fair values

The estimated fair values of the Operating Partnership’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	17	$	17	$	—	$	17	$	—
Total assets	$	17	$	17	$	—	$	17	$	—
Derivatives - Interest rate contracts (a)	$	686	$	686	$	—	$	686	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	376,207		388,821		—		—		388,821
Fannie Mae credit facilities	333,735		352,765		—		—		352,765
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	930,388	$	962,032	$	—	$	686	$	961,346

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	39	$	39	$	—	$	39	$	—
Total assets	$	39	$	39	$	—	$	39	$	—
Derivatives - Interest rate contracts (a)	$	918	$	918	$	—	$	918	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	378,371		391,835		—		—		391,835
Fannie Mae credit facilities	333,828		355,470		—		—		355,470
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	932,877	$	967,983	$	—	$	918	$	967,065

(a) See Note 7, Derivatives and Hedging Activity.

(b) See Note 4, Debt.

XML

Real Estate Owned (UNITED DOMINION REALTY, L.P.) (Tables)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

Summary of carrying amounts for real estate owned (at cost)

The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land and land improvements	$	1,984,019		$	1,980,221
Depreciable property — held and used:
Building, improvements, and furniture, fixtures and equipment	6,272,976			6,225,406
Under development:
Land and land improvements	24,584			24,584
Building, improvements, and furniture, fixtures and equipment	172,069			153,048
Real estate owned	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Real estate owned, net	$	5,931,548		$	5,948,487

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

Summary of carrying amounts for real estate owned (at cost)

The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land	$	1,008,358		$	1,008,014
Depreciable property — held and used:
Buildings, improvements, and furniture, fixture and equipment	3,240,437			3,230,756
Real estate owned	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Real estate owned, net	$	2,801,282		$	2,835,467

XML

Debt (UNITED DOMINION REALTY, L.P.) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2013	Dec. 31, 2014
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	4 years 4 months 9 days
Borrowings outstanding	$ 1,500		$ 1,900
Fannie Mae [Member]
Debt Instrument [Line Items]
Borrowings outstanding	833,365		834,282
Weighted average daily borrowings during the period ended	833,697	835,873
Maximum daily borrowings during the period ended	834,003	837,564
Weighted average interest rate during the period ended	4.00%	4.10%
Interest rate at the end of the period	4.00%		4.00%
United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	3 years 9 months 10 days
United Dominion Reality L.P. [Member] | Fannie Mae [Member]
Debt Instrument [Line Items]
Borrowings outstanding	526,495		526,588
Weighted average daily borrowings during the period ended	526,705	527,592
Maximum daily borrowings during the period ended	$ 526,898	$ 528,659
Weighted average interest rate during the period ended	4.00%	4.10%
Interest rate at the end of the period	4.00%		4.00%
Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	2 years 9 months 10 days
Fixed Rate Debt [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	1 year 4 months 20 days
Fixed Rate Debt [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	3 years 9 months 10 days
Fixed Rate Debt [Member] | United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	2 years 9 months
Fixed Rate Debt [Member] | United Dominion Reality L.P. [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	1 year 4 months 7 days
Fixed Rate Debt [Member] | United Dominion Reality L.P. [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	4 years 3 months 25 days
Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	5 years 4 months 24 days
Variable Rate Debt [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	1 year 9 months 25 days
Variable Rate Debt [Member] | Tax Exempt Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	7 years 11 months 8 days
Variable Rate Debt [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	4 years 11 months 8 days
Variable Rate Debt [Member] | United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	7 years 1 month 13 days
Variable Rate Debt [Member] | United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	16 years 11 months 19 days
Variable Rate Debt [Member] | United Dominion Reality L.P. [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	5 years 8 months 26 days

XML

Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Segments	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Same Store Communities	36,063
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	$ 219,753	$ 198,039
Reportable apartment home segment NOI	143,575	132,124
Reconciling items:
Joint venture management and other fees	12,706	3,687
Property management	(5,694)	(5,346)
Other operating expenses	(1,766)	(1,935)
Real estate depreciation and amortization	88,777	88,533
Segment Reporting Reconciling Items Cost of Services Depreciation and Amortization	(88,777)	(88,533)
General and administrative	(12,152)	(11,994)
Casualty (Recoveries)/Charges	(996)	(500)
Casualty-related (recoveries)/charges, net	996	500
Other depreciation and amortization	(1,623)	(1,080)
Income/(loss) from unconsolidated entities	59,159	(3,565)
Interest expense	28,800	(32,884)
Interest and other income/(expense), net	360	1,415
Gains/(loss) on sales of real estate, net of tax	0	24,294
Tax benefit, net	425	3,329
Gain on sale of real estate owned, net of tax	0	24,294
Gain Loss on the Sale of Real Estate, Including Discontinued Operations	0
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588)	(647)
Net (income)/loss attributable to noncontrolling interests	(7)	(4)
Net income/(loss) attributable to UDR, Inc.	73,822	18,361
Reportable apartment home segment assets:
Total segment assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100)			(2,434,772)
Total segment asset - net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274	15,891		15,224	30,249
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Other assets	96,713			105,202
Total consolidated assets	6,858,511			6,846,534
Reportable Segment (Textual) [Abstract]
Number of reportable segments	2
Condition for Community considered to have stabilized occupancy	0.9
Number of Tenants or related group of tenants that contributed 10% or more of company total revenue	0	0
Same Communities [Member]
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	13,300	7,700
Same Store Communities Western Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	67,857	63,267
Reportable apartment home segment NOI	50,228	45,408
Reportable apartment home segment assets:
Total segment assets	2,626,770			2,620,242
Same Store Communities Mid-Atlantic Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	42,795	42,049
Reportable apartment home segment NOI	29,288	28,835
Reportable apartment home segment assets:
Total segment assets	1,536,389			1,533,993
Same Store Communities Northeast Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	20,892	19,803
Reportable apartment home segment NOI	15,566	14,546
Reportable apartment home segment assets:
Total segment assets	1,078,431			1,076,656
Same Store Communities Southeastern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	27,829	26,497
Reportable apartment home segment NOI	18,547	17,872
Reportable apartment home segment assets:
Total segment assets	788,668			786,438
Same Store Communities Southwestern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	14,107	13,467
Reportable apartment home segment NOI	8,536	8,358
Reportable apartment home segment assets:
Total segment assets	441,888			440,721
Non-Mature communities/Other [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	33,567	29,317
Reportable apartment home segment NOI	21,410	17,105
Reportable apartment home segment assets:
Total segment assets	1,981,502			1,925,209
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	2,500	2,100
Total Communities [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	207,047	194,400
Segment Reconciling Items [Member]
Reconciling items:
Gain Loss on the Sale of Real Estate, Including Discontinued Operations		24,294
United Dominion Reality L.P. [Member]
Segment Reporting Information [Line Items]
Same Store Communities	19,209
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment NOI	78,115		72,417
Reconciling items:
Property management	(3,027)		(2,815)
Other operating expenses	(1,490)		(1,436)
Real estate depreciation and amortization	44,478	44,271
General and administrative	(5,639)		(6,970)
Casualty (Recoveries)/Charges	(593)	(500)	500
Interest expense	(10,771)		(10,014)
Gains/(loss) on sales of real estate, net of tax	24,623	24,402
Net (income)/loss attributable to noncontrolling interests	(394)		(280)
Net income/(loss) attributable to UDR, Inc.	36,346	30,533	30,533
Reportable apartment home segment assets:
Total segment assets	4,248,795			4,238,770
Accumulated depreciation	(1,447,513)			(1,403,303)
Total segment asset - net book value	2,801,282			2,835,467
Reconciling items:
Cash and cash equivalents	826	853		502	1,897
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total consolidated assets	2,843,381			2,878,284
Reportable Segment (Textual) [Abstract]
Related Party Transaction, Management Fee Percentage	2.75%
Number of reportable segments	2
Number of Tenants or related group of tenants that contributed 10% or more of company total revenue	0	0
United Dominion Reality L.P. [Member] | Same-Store [Member]
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	7,900	3,900
United Dominion Reality L.P. [Member] | Same Store Communities Western Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	47,815		44,238
Reportable apartment home segment NOI	35,277		32,089
Reportable apartment home segment assets:
Total segment assets	1,690,647			1,686,127
United Dominion Reality L.P. [Member] | Same Store Communities Mid-Atlantic Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	17,249		17,246
Reportable apartment home segment NOI	11,466		11,565
Reportable apartment home segment assets:
Total segment assets	714,425			713,093
United Dominion Reality L.P. [Member] | Same Store Communities Northeast Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	15,072		14,268
Reportable apartment home segment NOI	11,572		10,638
Reportable apartment home segment assets:
Total segment assets	778,378			777,376
United Dominion Reality L.P. [Member] | Same Store Communities Southeastern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	11,679		11,131
Reportable apartment home segment NOI	7,710		7,457
Reportable apartment home segment assets:
Total segment assets	334,282			333,428
United Dominion Reality L.P. [Member] | Same Store Communities Southwestern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	6,737		6,553
Reportable apartment home segment NOI	4,213		4,217
Reportable apartment home segment assets:
Total segment assets	229,627			228,996
United Dominion Reality L.P. [Member] | Non-Mature communities/Other [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	11,543		8,934
Reportable apartment home segment NOI	7,877		6,451
Reportable apartment home segment assets:
Total segment assets	501,436			499,750
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	472	256
United Dominion Reality L.P. [Member] | Total Communities [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	110,095		102,370
Taxable REIT Subsidiaries [Member] | United Dominion Reality L.P. [Member]
Reportable Segment (Textual) [Abstract]
Related Party Transaction, Management Fee Percentage	2.75%
Segment Reconciling Items [Member] | United Dominion Reality L.P. [Member]
Reconciling items:
Real estate depreciation and amortization	$ 44,478		$ 44,271

XML

Reportable Segments (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

REPORTABLE SEGMENTS

REPORTABLE SEGMENTS

GAAP guidance requires that segment disclosures present the measure(s) used by the chief operating decision maker to decide how to allocate resources and for purposes of assessing such segments’ performance. UDR’s chief operating decision maker is comprised of several members of its executive management team who use several generally accepted industry financial measures to assess the performance of the business for our reportable operating segments.

UDR owns and operates multifamily apartment communities that generate rental and other property related income through the leasing of apartment homes to a diverse base of tenants. The primary financial measures for UDR’s apartment communities are rental income and net operating income (“NOI”). Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. NOI is defined as rental income less direct property rental expenses. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense, which is calculated as 2.75% of property revenue to cover the regional supervision and accounting costs related to consolidated property operations, and land rent. UDR’s chief operating decision maker utilizes NOI as the key measure of segment profit or loss.

UDR’s two reportable segments are Same-Store Communities and Non-Mature Communities/Other:

• Same-Store Communities represent those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. A comparison of operating results from the prior year is meaningful as these communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

• Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Management evaluates the performance of each of our apartment communities on a Same-Store Community and Non-Mature Community/Other basis, as well as individually and geographically. This is consistent with the aggregation criteria under GAAP as each of our apartment communities generally has similar economic characteristics, facilities, services, and tenants. Therefore, the Company’s reportable segments have been aggregated by geography in a manner identical to that which is provided to the chief operating decision maker.

All revenues are from external customers and no single tenant or related group of tenants contributed 10% or more of UDR’s total revenues during the three months endedMarch 31, 2015 and 2014.

The following table details rental income and NOI from continuing and discontinued operations for UDR’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net Income/(Loss) Attributable to UDR, Inc. in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	67,857		$	63,267
Mid-Atlantic Region	42,795			42,049
Southeast Region	27,829			26,497
Northeast Region	20,892			19,803
Southwest Region	14,107			13,467
Non-Mature Communities/Other	33,567			29,317
Total consolidated rental income	$	207,047		$	194,400
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	50,228		$	45,408
Mid-Atlantic Region	29,288			28,835
Southeast Region	18,547			17,872
Northeast Region	15,566			14,546
Southwest Region	8,536			8,358
Non-Mature Communities/Other	21,410			17,105
Total consolidated NOI	143,575			132,124
Reconciling items:
Joint venture management and other fees	12,706			3,687
Property management	(5,694		)	(5,346		)
Other operating expenses	(1,766		)	(1,935		)
Real estate depreciation and amortization	(88,777		)	(88,533		)
General and administrative	(12,152		)	(11,994		)
Casualty-related recoveries/(charges), net	(996		)	(500		)
Other depreciation and amortization	(1,623		)	(1,080		)
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Tax benefit/(expense), net	425			3,329
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	$	73,822		$	18,361

(a) Same-Store Community population consisted of 36,063 apartment homes.

The following table details the assets of UDR’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets:
Same-Store Communities:
West Region	$	2,626,770		$	2,620,242
Mid-Atlantic Region	1,536,389			1,533,993
Southeast Region	788,668			786,438
Northeast Region	1,078,431			1,076,656
Southwest Region	441,888			440,721
Non-Mature Communities/Other	1,981,502			1,925,209
Total assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Total assets — net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274			15,224
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Investment in and advances to unconsolidated joint ventures, net	763,540			718,226
Other assets	96,713			105,202
Total consolidated assets	$	6,858,511		$	6,846,534

Capital expenditures related to our Same-Store Communities totaled $13.3 million and $7.7 million for the three months endedMarch 31, 2015 and 2014, respectively. Capital expenditures related to our Non-Mature Communities/Other totaled $2.5 million and $2.1 million for the three months endedMarch 31, 2015 and 2014.

Markets included in the above geographic segments are as follows:

i. West Region — Orange County, San Francisco, Seattle, Los Angeles, Monterey Peninsula, Other Southern California, and Portland

ii. Mid-Atlantic Region — Metropolitan D.C., Baltimore, Richmond, Norfolk, and Other Mid-Atlantic

iii. Southeast Region — Tampa, Orlando, Nashville, and Other Florida

iv. Northeast Region — New York and Boston

v. Southwest Region — Dallas and Austin

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

REPORTABLE SEGMENTS

REPORTABLE SEGMENTS

GAAP guidance requires that segment disclosures present the measure(s) used by the chief operating decision maker to decide how to allocate resources and for purposes of assessing such segments’ performance. The Operating Partnership has the same chief operating decision maker as that of its parent, the General Partner. The chief operating decision maker consists of several members of UDR’s executive management team who use several generally accepted industry financial measures to assess the performance of the business for our reportable operating segments.

The Operating Partnership owns and operates multifamily apartment communities throughout the United States that generate rental and other property related income through the leasing of apartment homes to a diverse base of tenants. The primary financial measures of the Operating Partnership’s apartment communities are rental income and net operating income (“NOI”), and are included in the chief operating decision maker’s assessment of the Operating Partnership’s performance on a consolidated basis. Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. NOI is defined as total revenues less direct property operating expenses. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense which is calculated as 2.75% of property revenue to cover the regional supervision and accounting costs related to consolidated property operations, and land rent. The chief operating decision maker of the General Partner utilizes NOI as the key measure of segment profit or loss.

The Operating Partnership’s two reportable segments are Same-Store Communities and Non-Mature Communities/Other:

• Same-Store Communities represent those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. A comparison of operating results from the prior year is meaningful as these communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

• Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Management of the General Partner evaluates the performance of each of the Operating Partnership’s apartment communities on a Same-Store Community and Non-Mature Community/Other basis, as well as individually and geographically. This is consistent with the aggregation criteria under GAAP as each of the apartment communities generally has similar economic characteristics, facilities, services, and tenants. Therefore, the Operating Partnership’s reportable segments have been aggregated by geography in a manner identical to that which is provided to the chief operating decision maker.

All revenues are from external customers and no single tenant or related group of tenants contributed 10% or more of the Operating Partnership’s total revenues during the three months endedMarch 31, 2015 and 2014.

The following table details rental income and NOI from continuing and discontinued operations for the Operating Partnership’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net income/(loss) attributable to OP unitholders in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	47,815		$	44,238
Mid-Atlantic Region	17,249			17,246
Southeast Region	11,679			11,131
Northeast Region	15,072			14,268
Southwest Region	6,737			6,553
Non-Mature Communities/Other	11,543			8,934
Total consolidated rental income	$	110,095		$	102,370
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	35,277		$	32,089
Mid-Atlantic Region	11,466			11,565
Southeast Region	7,710			7,457
Northeast Region	11,572			10,638
Southwest Region	4,213			4,217
Non-Mature Communities/Other	7,877			6,451
Total consolidated NOI	78,115			72,417
Reconciling items:
Property management	(3,027		)	(2,815		)
Other operating expenses	(1,490		)	(1,436		)
Real estate depreciation and amortization	(44,478		)	(44,271		)
General and administrative	(5,639		)	(6,970		)
Casualty-related recoveries/(charges), net	(593		)	(500		)
Interest expense	(10,771		)	(10,014		)
Gain/(loss) on sale of real estate owned	24,623			24,402
Net (income)/loss attributable to noncontrolling interests	(394		)	(280		)
Net income/(loss) attributable to OP unitholders	$	36,346		$	30,533

(a) Same-store consists of 19,209 apartment homes.

The following table details the assets of the Operating Partnership’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets
Same-Store Communities
West Region	$	1,690,647		$	1,686,127
Mid-Atlantic Region	714,425			713,093
Southeast Region	334,282			333,428
Northeast Region	778,378			777,376
Southwest Region	229,627			228,996
Non-Mature Communities/Other	501,436			499,750
Total assets	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Total assets - net book value	2,801,282			2,835,467
Reconciling items:
Cash and cash equivalents	826			502
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total consolidated assets	$	2,843,381		$	2,878,284

Capital expenditures related to the Operating Partnership’s Same-Store Communities totaled $7.9 million and $3.9 million for the three months endedMarch 31, 2015 and 2014, respectively. Capital expenditures related to the Operating Partnership’s Non-Mature Communities/Other totaled $472,000 and $256,000 for the three months endedMarch 31, 2015 and 2014, respectively.

Markets included in the above geographic segments are as follows:

i. West Region — Orange County, San Francisco, Seattle, Los Angeles, Monterey Peninsula, Other Southern California, and Portland

ii. Mid-Atlantic Region — Metropolitan D.C. and Baltimore

iii. Southeast Region — Tampa, Nashville, and Other Florida

iv. Northeast Region — New York and Boston

v. Southwest Region — Dallas

XML

Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Tables)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

Outstanding interest rate derivatives

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	9	$	565,000
Interest rate caps	3	$	243,079

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	$	96,409

Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	28	86		$	17,112	$	10,368
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Effect of Company's derivative financial instruments on Consolidated Statements of Operation

The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)						Gain/(Loss) Recognized in Interest expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2015			2014			2015			2014			2015		2014
Three Months Ended March 31,
Interest rate products	$	(7,552	)	$	(55	)	$	(737	)	$	(1,532	)	$	—	$	—

Effect of Company's derivatives not designated as hedging instruments on the Consolidated Statements of Operations

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Offsetting Assets [Table Text Block]

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Received		Net Amount
March 31, 2015	$	29	$	—	$	29	$	—		$	—	$	29
December 31, 2014	$	88	$	—	$	88	$	(27	)	$	—	$	61

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting Liabilities [Table Text Block]

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Posted		Net Amount
March 31, 2015	$	17,112	$	—	$	17,112	$	—		$	—	$	17,112
December 31, 2014	$	10,368	$	—	$	10,368	$	(27	)	$	—	$	10,341

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

Outstanding interest rate derivatives

As of March 31, 2015, the Operating Partnership had the following outstanding interest rate derivatives designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	1	$	46,272
Interest rate caps	2	$	166,341

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, we had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	89,220

As of March 31, 2015, the Operating Partnership had the following outstanding interest rate derivatives designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	1	$	46,272
Interest rate caps	2	$	166,341

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, we had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	89,220

Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet

The table below presents the fair value of the Operating Partnership’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	16	$	37	$	686	$	918
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Effect of Company's derivative financial instruments on Consolidated Statements of Operation

The tables below present the effect of the derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)
Derivatives in Cash Flow Hedging Relationships	2015			2014			2015			2014
Three Months Ended March 31,
Interest rate products	$	(51	)	$	(51	)	$	(286	)	$	(623	)

Effect of Company's derivatives not designated as hedging instruments on the Consolidated Statements of Operations

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Offsetting Assets [Table Text Block]

The General Partner has elected not to offset derivative positions in the consolidated financial statements. The table below presents the effect on the Operating Partnership’s financial position had the General Partner made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014:

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Received		Net Amount
March 31, 2015	$	17	$	—	$	17	$	—	$	—	$	17
December 31, 2014	$	39	$	—	$	39	$	—	$	—	$	39

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting Liabilities [Table Text Block]

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Posted		Net Amount
March 31, 2015	$	686	$	—	$	686	$	—	$	—	$	686
December 31, 2014	$	918	$	—	$	918	$	—	$	—	$	918

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

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Secured and Unsecured Debt (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2013	Dec. 31, 2014
Line of Credit Facility [Line Items]
Unamortized discount	$ 7,000		$ 6,700
Secured credit facilities
Borrowings outstanding	1,500		1,900
Five Point Two Five Percent, Medium Term Notes, Due January 2015 [Member]
Line of Credit Facility [Line Items]
Unamortized discount	0		6
Fannie Mae [Member]
Secured credit facilities
Borrowings outstanding	833,365		834,282
Weighted average daily borrowings during the period ended	833,697	835,873
Maximum daily borrowings during the period ended	834,003	837,564
Weighted average interest rate during the period ended	4.00%	4.10%
Interest rate at the end of the period	4.00%		4.00%
Four Point Two Five Percentage Medium-Term Notes due June 2018 [Member]
Line of Credit Facility [Line Items]
Unamortized discount	1,358		1,465
Three point seven percent medium term note due October 2020 [Member]
Line of Credit Facility [Line Items]
Unamortized discount	44		46
Four Point Six Three Percent Term Medium Notes Due January Two Thousand Twenty-Two [Member]
Line of Credit Facility [Line Items]
Unamortized discount	2,433		2,523
3.75 MTN Due July 2024 [Member]
Line of Credit Facility [Line Items]
Unamortized discount	$ 964		$ 990

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Real Estate Owned (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary of carrying amounts for real estate owned (at cost)
Land	$ 1,984,019
Under development:
Real estate under development (net of accumulated depreciation of $513 and $0, respectively)	196,511	177,632
Real estate owned	8,453,648	8,383,259
Less: accumulated depreciation	(2,521,958)	(2,434,772)
Real estate owned, net	5,931,548	5,948,487
Land [Member]
Under development:
Real estate under development (net of accumulated depreciation of $513 and $0, respectively)	24,584	1,980,221
Construction in progress [Member]
Under development:
Real estate under development (net of accumulated depreciation of $513 and $0, respectively)	172,069
United Dominion Reality L.P. [Member]
Summary of carrying amounts for real estate owned (at cost)
Land	1,008,358	1,008,014
Depreciable property - held and used:
Building, improvements, and furniture, fixture and equipment	3,240,437	3,230,756
Under development:
Real estate owned	4,248,795	4,238,770
Less: accumulated depreciation	(1,447,513)	(1,403,303)
Real estate owned, net	$ 2,801,282	$ 2,835,467

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Income/(Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following table sets forth the additional shares of common stock outstanding by equity instrument if converted to common stock for each of the three months endedMarch 31, 2015 and 2014(shares in thousands):

	Three Months Ended
	March 31,
	2015	2014
OP Units	9,165	9,319
Preferred stock	3,036	3,036
Stock options and unvested restricted stock	1,828	1,645

(Loss)/earnings per share

The following table sets forth the computation of basic and diluted income/(loss) per share for the periods presented (dollars and shares in thousands, except per share data):

	Three Months Ended
	March 31,
	2015			2014
Numerator for income/(loss) per share:
Income/(loss) from continuing operations	$	76,417		$	(5,195	)
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
(Income)/loss from continuing operations attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(650		)
(Income)/loss from continuing operations attributable to noncontrolling interests	(7		)	(4		)
Income/(loss) from continuing operations attributable to UDR, Inc.	73,822			18,445
Distributions to preferred stockholders - Series E (Convertible)	(931		)	(931		)
Income/(loss) from continuing operations attributable to common stockholders	$	72,891		$	17,514
Income/(loss) from discontinued operations, net of tax	$	—		$	(87	)
(Income)/loss from discontinued operations attributable to redeemable noncontrolling interests in the Operating Partnership	—			3
Income/(loss) from discontinued operations attributable to common stockholders	$	—		$	(84	)
Net income/(loss) attributable to common stockholders	$	72,891		$	17,430
Denominator for income/(loss) per share:
Weighted average common shares outstanding	258,100			251,213
Non-vested restricted stock awards	(1,266		)	(1,036		)
Denominator for basic income/(loss) per share	256,834			250,177
Incremental shares issuable from assumed conversion of stock options and unvested restricted stock	1,828			1,645
Denominator for diluted income/(loss) per share	258,662			251,822
Income/(loss) per weighted average common share-basic:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07
Income/(loss) per weighted average common share-diluted:
Income/(loss) from continuing operations attributable to common stockholders	$	0.28		$	0.07
Income/(loss) from discontinued operations attributable to common stockholders	0.00			0.00
Net income/(loss) attributable to common stockholders	$	0.28		$	0.07

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Consolidated Statements of Comprehensive Income / (Loss) (UNITED DOMINION REALTY, L.P.) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income/(loss)	$ 76,417	$ 19,012
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Unrealized holding gain/(loss)	(7,552)	(55)
(Gain)/loss reclassifed into earnings from other comprehensive income/(loss)	737	1,532
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	(6,815)	1,477
Comprehensive income/(loss)	69,602	20,489
Comprehensive (income)/loss attributable to noncontrolling interests	2,371	707
Comprehensive income/(loss) attributable to OP unitholders	67,231	19,782
United Dominion Reality L.P. [Member]
Net income/(loss)	36,740	30,813
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(51)	(51)
(Gain)/loss reclassifed into earnings from other comprehensive income/(loss)	286	623
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	235	572
Comprehensive income/(loss)	36,975	31,385
Comprehensive (income)/loss attributable to noncontrolling interests	394	280
Comprehensive income/(loss) attributable to OP unitholders	$ 36,581	$ 31,105

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Real Estate Owned (UNITED DOMINION REALTY, L.P.) (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015 Apartment_Homes Communities States	Mar. 31, 2014	Mar. 31, 2013
Real Estate Owned (Textual) [Abstract]
Number of communities owned (in communities)	138
Number of states operating within (in states)	10
Number of apartments owned (in apartments homes)	39,956
Number of communities acquired apartment homes are within	0
Development costs excluding direct costs and capitlized interest	$ 2,200,000	$ 3,400,000
Interest capitalized during period	4,800,000	5,300,000
Other Cost and Expense, Operating	1,766,000	1,926,000
Gains/(loss) on sales of real estate, net of tax	0	24,294,000
Casualty-related (recoveries)/charges, net	(996,000)	(500,000)
Casualty (Recoveries)/Charges	(996,000)	(500,000)
Payments for (Proceeds from) Investments	0	47,922,000
United Dominion Reality L.P. [Member]
Real Estate Owned (Textual) [Abstract]
Number of communities owned (in communities)	68
Number of states operating within (in states)	9
Number of apartments owned (in apartments homes)	20,809
Development costs excluding direct costs and capitlized interest	133,000	1,000,000
Interest capitalized during period	0	800,000
Other Cost and Expense, Operating	1,490,000	1,436,000
Gains/(loss) on sales of real estate, net of tax	24,623,000	24,402,000
Casualty (Recoveries)/Charges	$ (593,000)	$ (500,000)	$ 500,000

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Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Summary of income from discontinued operations

The following is a summary of income/(loss) from discontinued operations, net of tax for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Rental income	$	—	$	48
Rental expenses	—		125
Property management	—		1
Interest and other (income)/expense, net	—		9
Income/(loss) from discontinued operations, net of tax	$	—	$	(87	)
Income/(loss) from discontinued operations attributable to UDR, Inc.	$	—	$	(84	)

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Fair Value of Derivatives and Financial Instruments (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

Fair value is based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:

• Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

• Level 2 — Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

The estimated fair values of the Company’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	15,494	$	15,923	$	—	$	—	$	15,923
Derivatives - Interest rate contracts (b)	29		29		—		29		—
Total assets	$	15,523	$	15,952	$	—	$	29	$	15,923
Derivatives - Interest rate contracts (b)	$	17,112	$	17,112	$	—	$	17,112	$	—
Secured debt instruments - fixed rate: (c)
Mortgage notes payable	411,271		425,969		—		—		425,969
Fannie Mae credit facilities	567,169		599,580		—		—		599,580
Secured debt instruments - variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	389,000		389,000		—		—		389,000
Senior unsecured notes	1,756,996		1,852,361		—		—		1,852,361
Total liabilities	$	3,533,781	$	3,676,255	$	—	$	17,112	$	3,659,143
Redeemable noncontrolling interests in the Operating Partnership (d)	$	311,883	$	311,883	$	—	$	311,883	$	—

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	14,369	$	14,808	$	—	$	—	$	14,808
Derivatives- Interest rate contracts (b)	88		88		—		88		—
Total assets	$	14,457	$	14,896	$	—	$	88	$	14,808
Derivatives- Interest rate contracts (b)	$	10,368	$	10,368	$	—	$	10,368	$	—
Secured debt instruments- fixed rate: (c)
Mortgage notes payable	401,210		415,663		—		—		415,663
Fannie Mae credit facilities	568,086		606,623		—		—		606,623
Secured debt instruments- variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	152,500		152,500		—		—		152,500
Senior unsecured notes	2,069,076		2,144,125		—		—		2,144,125
Total liabilities	$	3,593,473	$	3,721,512	$	—	$	10,368	$	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	$	282,480	$	282,480	$	—	$	282,480	$	—

(a) See Note 2, Significant Accounting Policies.

(b) See Note 10, Derivatives and Hedging Activity.

(c) See Note 6, Secured and Unsecured Debt.

(d) See Note 8, Noncontrolling Interests.

There were no transfers into or out of each of the levels of the fair value hierarchy.

Financial Instruments Carried at Fair Value

The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rise above the strike rate of the caps. The variable interest rates used in the calculation of projected receipts on the cap are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2015 and December 31, 2014, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. In conjunction with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Redeemable noncontrolling interests in the Operating Partnership have a redemption feature and are marked to their redemption value. The redemption value is based on the fair value of the Company’s common stock at the redemption date, and therefore, is calculated based on the fair value of the Company’s common stock at the balance sheet date. Since the valuation is based on observable inputs such as quoted prices for similar instruments in active markets, redeemable noncontrolling interests in the Operating Partnership are classified as Level 2.

Financial Instruments Not Carried at Fair Value

At March 31, 2015, the fair values of cash and cash equivalents, restricted cash, accounts receivable, prepaids, real estate taxes payable, accrued interest payable, security deposits and prepaid rent, distributions payable and accounts payable approximated their carrying values because of the short term nature of these instruments. The estimated fair values of other financial instruments were determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair values. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company would realize on the disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts.

We estimate the fair value of our notes receivable and debt instruments by discounting the remaining cash flows of the debt instrument at a discount rate equal to the replacement market credit spread plus the corresponding treasury yields. Factors considered in determining a replacement market credit spread include general market conditions, borrower specific credit spreads, time remaining to maturity, loan-to-value ratios and collateral quality, where applicable (Level 3).

We record impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the undiscounted cash flows estimated to be generated by the future operation and disposition of those assets are less than the net book value of those assets. Our cash flow estimates are based upon historical results adjusted to reflect our best estimate of future market and operating conditions and our estimated holding periods. The net book value of impaired assets is reduced to fair value. Our estimates of fair value represent our best estimate based upon Level 3 inputs such as industry trends and reference to market rates and transactions.

We consider various factors to determine if a decrease in the value of our investment in and advances to unconsolidated joint ventures, net is other-than-temporary. These factors include, but are not limited to, age of the venture, our intent and ability to retain our investment in the entity, the financial condition and long-term prospects of the entity, and the relationships with the other joint venture partners and its lenders. Based on the significance of the unobservable inputs, we classify these fair value measurements within Level 3 of the valuation hierarchy. The Company did not incur any other-than-temporary decrease in the value of its investments in unconsolidated joint ventures during the three months endedMarch 31, 2015 and 2014.

After determining an other-than-temporary decrease in the value of an equity method investment has occurred, we estimate the fair value of our investment by estimating the proceeds we would receive upon a hypothetical liquidation of the investment at the date of measurement. Inputs reflect management’s best estimate of what market participants would use in pricing the investment giving consideration to the terms of the joint venture agreement and the estimated discounted future cash flows to be generated from the underlying joint venture assets. The inputs and assumptions utilized to estimate the future cash flows of the underlying assets are based upon the Company’s evaluation of the economy, market trends, operating results, and other factors, including judgments regarding costs to complete any construction activities, lease up and occupancy rates, rental rates, inflation rates, capitalization rates utilized to estimate the projected cash flows at the disposition, and discount rates.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

Fair value is based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:

• Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

• Level 2 — Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

The estimated fair values of the Operating Partnership’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	17	$	17	$	—	$	17	$	—
Total assets	$	17	$	17	$	—	$	17	$	—
Derivatives - Interest rate contracts (a)	$	686	$	686	$	—	$	686	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	376,207		388,821		—		—		388,821
Fannie Mae credit facilities	333,735		352,765		—		—		352,765
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	930,388	$	962,032	$	—	$	686	$	961,346

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Derivatives - Interest rate contracts (a)	$	39	$	39	$	—	$	39	$	—
Total assets	$	39	$	39	$	—	$	39	$	—
Derivatives - Interest rate contracts (a)	$	918	$	918	$	—	$	918	$	—
Secured debt instruments - fixed rate: (b)
Mortgage notes payable	378,371		391,835		—		—		391,835
Fannie Mae credit facilities	333,828		355,470		—		—		355,470
Secured debt instruments - variable rate: (b)
Tax-exempt secured notes payable	27,000		27,000		—		—		27,000
Fannie Mae credit facilities	192,760		192,760		—		—		192,760
Total liabilities	$	932,877	$	967,983	$	—	$	918	$	967,065

(a) See Note 7, Derivatives and Hedging Activity.

(b) See Note 4, Debt.

Financial Instruments Carried at Fair Value

The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rise above the strike rate of the caps. The variable interest rates used in the calculation of projected receipts on the cap are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.

The General Partner, on behalf of the Operating Partnership, incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Operating Partnership has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the General Partner, on behalf of the Operating Partnership, has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2015 and December 31, 2014, the Operating Partnership has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Operating Partnership has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. In conjunction with the FASB’s fair value measurement guidance, the Operating Partnership made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Financial Instruments Not Carried at Fair Value

As of March 31, 2015, the fair values of cash and cash equivalents, restricted cash, accounts receivable, prepaids, real estate taxes payable, accrued interest payable, security deposits and prepaid rent, distributions payable and accounts payable approximated their carrying values because of the short term nature of these instruments. The estimated fair values of other financial instruments were determined by the Operating Partnership using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair values. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Operating Partnership would realize on the disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts.

Fair value of our debt instruments is estimated by discounting the remaining cash flows of the debt instrument at a discount rate equal to the replacement market credit spread plus the corresponding treasury yields. Factors considered in determining a replacement market credit spread include general market conditions, borrower specific credit spreads, time remaining to maturity, loan-to-value ratios and collateral quality (Level 3).

The Operating Partnership records impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the undiscounted cash flows estimated to be generated by the future operation and disposition of those assets are less than the net book value of those assets. Cash flow estimates are based upon historical results adjusted to reflect management’s best estimate of future market and operating conditions and our estimated holding periods. The net book value of impaired assets is reduced to fair value. The General Partner’s estimates of fair value represent management’s estimates based upon Level 3 inputs such as industry trends and reference to market rates and transactions.

XML

Fair Value of Derivatives and Financial Instruments

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS

Fair value is based on the price that would be received to sell an asset or the exit price that would be paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level valuation hierarchy prioritizes observable and unobservable inputs used to measure fair value. The fair value hierarchy consists of three broad levels, which are described below:

• Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access.

• Level 2 — Observable inputs other than prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated with observable market data.

• Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

The estimated fair values of the Company’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	15,494	$	15,923	$	—	$	—	$	15,923
Derivatives - Interest rate contracts (b)	29		29		—		29		—
Total assets	$	15,523	$	15,952	$	—	$	29	$	15,923
Derivatives - Interest rate contracts (b)	$	17,112	$	17,112	$	—	$	17,112	$	—
Secured debt instruments - fixed rate: (c)
Mortgage notes payable	411,271		425,969		—		—		425,969
Fannie Mae credit facilities	567,169		599,580		—		—		599,580
Secured debt instruments - variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	389,000		389,000		—		—		389,000
Senior unsecured notes	1,756,996		1,852,361		—		—		1,852,361
Total liabilities	$	3,533,781	$	3,676,255	$	—	$	17,112	$	3,659,143
Redeemable noncontrolling interests in the Operating Partnership (d)	$	311,883	$	311,883	$	—	$	311,883	$	—

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	14,369	$	14,808	$	—	$	—	$	14,808
Derivatives- Interest rate contracts (b)	88		88		—		88		—
Total assets	$	14,457	$	14,896	$	—	$	88	$	14,808
Derivatives- Interest rate contracts (b)	$	10,368	$	10,368	$	—	$	10,368	$	—
Secured debt instruments- fixed rate: (c)
Mortgage notes payable	401,210		415,663		—		—		415,663
Fannie Mae credit facilities	568,086		606,623		—		—		606,623
Secured debt instruments- variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	152,500		152,500		—		—		152,500
Senior unsecured notes	2,069,076		2,144,125		—		—		2,144,125
Total liabilities	$	3,593,473	$	3,721,512	$	—	$	10,368	$	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	$	282,480	$	282,480	$	—	$	282,480	$	—

(a) See Note 2, Significant Accounting Policies.

(b) See Note 10, Derivatives and Hedging Activity.

(c) See Note 6, Secured and Unsecured Debt.

(d) See Note 8, Noncontrolling Interests.

There were no transfers into or out of each of the levels of the fair value hierarchy.

Financial Instruments Carried at Fair Value

The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The fair values of interest rate options are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates rise above the strike rate of the caps. The variable interest rates used in the calculation of projected receipts on the cap are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.

The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2015 and December 31, 2014, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. In conjunction with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

Redeemable noncontrolling interests in the Operating Partnership have a redemption feature and are marked to their redemption value. The redemption value is based on the fair value of the Company’s common stock at the redemption date, and therefore, is calculated based on the fair value of the Company’s common stock at the balance sheet date. Since the valuation is based on observable inputs such as quoted prices for similar instruments in active markets, redeemable noncontrolling interests in the Operating Partnership are classified as Level 2.

Financial Instruments Not Carried at Fair Value

At March 31, 2015, the fair values of cash and cash equivalents, restricted cash, accounts receivable, prepaids, real estate taxes payable, accrued interest payable, security deposits and prepaid rent, distributions payable and accounts payable approximated their carrying values because of the short term nature of these instruments. The estimated fair values of other financial instruments were determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair values. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company would realize on the disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts.

We estimate the fair value of our notes receivable and debt instruments by discounting the remaining cash flows of the debt instrument at a discount rate equal to the replacement market credit spread plus the corresponding treasury yields. Factors considered in determining a replacement market credit spread include general market conditions, borrower specific credit spreads, time remaining to maturity, loan-to-value ratios and collateral quality, where applicable (Level 3).

We record impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the undiscounted cash flows estimated to be generated by the future operation and disposition of those assets are less than the net book value of those assets. Our cash flow estimates are based upon historical results adjusted to reflect our best estimate of future market and operating conditions and our estimated holding periods. The net book value of impaired assets is reduced to fair value. Our estimates of fair value represent our best estimate based upon Level 3 inputs such as industry trends and reference to market rates and transactions.

We consider various factors to determine if a decrease in the value of our investment in and advances to unconsolidated joint ventures, net is other-than-temporary. These factors include, but are not limited to, age of the venture, our intent and ability to retain our investment in the entity, the financial condition and long-term prospects of the entity, and the relationships with the other joint venture partners and its lenders. Based on the significance of the unobservable inputs, we classify these fair value measurements within Level 3 of the valuation hierarchy. The Company did not incur any other-than-temporary decrease in the value of its investments in unconsolidated joint ventures during the three months endedMarch 31, 2015 and 2014.

After determining an other-than-temporary decrease in the value of an equity method investment has occurred, we estimate the fair value of our investment by estimating the proceeds we would receive upon a hypothetical liquidation of the investment at the date of measurement. Inputs reflect management’s best estimate of what market participants would use in pricing the investment giving consideration to the terms of the joint venture agreement and the estimated discounted future cash flows to be generated from the underlying joint venture assets. The inputs and assumptions utilized to estimate the future cash flows of the underlying assets are based upon the Company’s evaluation of the economy, market trends, operating results, and other factors, including judgments regarding costs to complete any construction activities, lease up and occupancy rates, rental rates, inflation rates, capitalization rates utilized to estimate the projected cash flows at the disposition, and discount rates.

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Consolidation and Basis of Presentation (Details) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred Tax Assets, Net	7.6
Consolidation And Basis Of Presentation (Textual) [Abstract]
Operating Partnership outstanding units	183,278,698
Non-affiliated Partners [Member]
Consolidation And Basis Of Presentation (Textual) [Abstract]
OP units outstanding related to limited partner	9,164,939	9,165,473
Percentage of units outstanding in Heritage OP	5.00%	5.00%
Limited Partner [Member]
Consolidation And Basis Of Presentation (Textual) [Abstract]
Percentage of units outstanding in Heritage OP	95.00%
General Partner [Member]
Consolidation And Basis Of Presentation (Textual) [Abstract]
OP units outstanding related to limited partner	174,113,759
Non-affiliated Partners [Member]
Consolidation And Basis Of Presentation (Textual) [Abstract]
OP units outstanding related to limited partner	9,164,939
Percentage of units outstanding in Heritage OP	5.00%

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Joint Ventures (Tables)

3 Months Ended

Mar. 31, 2015

Equity Method Investments and Joint Ventures [Abstract]

Combined Summary of Balance Sheets Relating to Unconsolidated Joint Ventures [Table Text Block]

We evaluate our investments in unconsolidated joint ventures and partnerships when events or changes in circumstances indicate that there may be an other-than-temporary decline in value. We consider various factors to determine if a decrease in the value of the investment is other-than-temporary. The Company did not recognize any other-than-temporary decreases in the value of its investments in unconsolidated joint ventures or partnerships during the three months endedMarch 31, 2015 and 2014.

Combined summary balance sheets relating to all of the unconsolidated joint ventures and partnerships (not just our proportionate share) are presented below as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	March 31, 2015		December 31, 2014
Total real estate, net	$	2,970,102	$	2,941,803
Assets held for sale	—		216,196
Cash and cash equivalents	29,544		32,544
Other assets	31,162		28,707
Total assets	$	3,030,808	$	3,219,250
Amount due to UDR	$	4,691	$	2,997
Third party debt	1,514,886		1,504,477
Liabilities held for sale	—		229,706
Accounts payable and accrued liabilities	52,146		44,335
Total liabilities	1,571,723		1,781,515
Total equity	1,459,085		1,437,735
Total liabilities and equity	$	3,030,808	$	3,219,250
UDR’s investment in unconsolidated joint ventures	$	763,540	$	718,226

Schedule of Equity Method Investments [Table Text Block]

The following table summarizes the Company’s investment in and advances to unconsolidated joint ventures and partnerships, net, which are accounted for under the equity method of accounting as of March 31, 2015 and December 31, 2014(dollars in thousands):

Joint Venture	Location of Properties	Number of Properties	Number of Apartment Homes	Investment at					UDR’s Ownership Interest
		March 31, 2015	March 31, 2015	March 31, 2015		December 31, 2014			March 31, 2015			December 31, 2014
Operating and development:
UDR/MetLife I	Various	4 land parcels	—	$	13,473	$	13,306		15.7		%	15.7		%
UDR/MetLife II	Various	21 operating communities	4,642	429,635		431,277			50.0		%	50.0		%
Other UDR/MetLife Development Joint Ventures		1 operating community;
		4 development communities (a);
	Various	1 land parcels	1,437	145,681		134,939			50.6		%	50.6		%
UDR/MetLife Vitruvian Park®	Addison, TX	3 operating communities
		6 land parcels	1,130	78,669		80,302			50.0		%	50.0		%
UDR/KFH	Washington, D.C.	3 operating communities	660	20,435		21,596			30.0		%	30.0		%
Texas (b)	Texas	—	—	—		(25,901		)	—		%	20.0		%
Investment in and advances to unconsolidated joint ventures, net, before participating loan investment				687,893		655,519
	Location	Interest Rate	Years To Maturity	Investment at					Income From Participating Loan Investment for the Three Months Ended March 31,
				March 31, 2015		December 31, 2014			2015			2014
Participating loan investment:
Steele Creek	Denver, CO	6.5%	2.3	75,647		62,707			$	1,154		$	321
Total investment in and advances to unconsolidated joint ventures, net				$	763,540	$	718,226

(a) The number of apartment homes for the communities under development presented in the table above is based on the projected number of total homes. As of March 31, 2015, no apartment homes had been completed in Other UDR/MetLife Development Joint Ventures.

(b) In January 2015, the eight communities held by the Texas joint venture were sold, generating net proceeds to UDR of $43.5 million. The Company recorded promote and disposition fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale.

Financial information relating to unconsolidated joint ventures operations

Combined summary financial information relating to all of the unconsolidated joint ventures’ and partnerships’ operations (not just our proportionate share), is presented below for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total revenues	$	54,546		$	38,955
Property operating expenses	(20,168		)	(14,360		)
Real estate depreciation and amortization	(19,351		)	(14,688		)
Operating income/(loss)	15,027			9,907
Interest expense	(16,061		)	(12,151		)
Income/(loss) from discontinued operations	182,488			(29,997		)
Net income/(loss)	$	181,454		$	(32,241	)
UDR income/(loss) from unconsolidated entities	$	59,159		$	(3,565	)

Combined summary of balance sheets relating to unconsolidated joint ventures

JOINT VENTURES AND PARTNERSHIPS

UDR has entered into joint ventures and partnerships with unrelated third parties to acquire real estate assets that are either consolidated and included in Real estate owned on the Consolidated Balance Sheets or are accounted for under the equity method of accounting, and are included in Investment in and advances to unconsolidated joint ventures, net on the Consolidated Balance Sheets. The Company consolidates the entities that we control as well as any variable interest entity where we are the primary beneficiary. In addition, the Company consolidates any joint venture or partnership in which we are the general partner or managing member and the third party does not have the ability to substantively participate in the decision-making process nor the ability to remove us as general partner or managing member without cause.

UDR’s joint ventures and partnerships are funded with a combination of debt and equity. Our losses are limited to our investment and except as noted below, the Company does not guarantee any debt, capital payout or other obligations associated with our joint ventures and partnerships.

Unconsolidated Joint Ventures and Partnerships

The Company recognizes earnings or losses from our investments in unconsolidated joint ventures and partnerships consisting of our proportionate share of the net earnings or losses of the joint ventures and partnerships. In addition, we may earn fees for providing management services to the unconsolidated joint ventures and partnerships.

The following table summarizes the Company’s investment in and advances to unconsolidated joint ventures and partnerships, net, which are accounted for under the equity method of accounting as of March 31, 2015 and December 31, 2014(dollars in thousands):

Joint Venture	Location of Properties	Number of Properties	Number of Apartment Homes	Investment at					UDR’s Ownership Interest
		March 31, 2015	March 31, 2015	March 31, 2015		December 31, 2014			March 31, 2015			December 31, 2014
Operating and development:
UDR/MetLife I	Various	4 land parcels	—	$	13,473	$	13,306		15.7		%	15.7		%
UDR/MetLife II	Various	21 operating communities	4,642	429,635		431,277			50.0		%	50.0		%
Other UDR/MetLife Development Joint Ventures		1 operating community;
		4 development communities (a);
	Various	1 land parcels	1,437	145,681		134,939			50.6		%	50.6		%
UDR/MetLife Vitruvian Park®	Addison, TX	3 operating communities
		6 land parcels	1,130	78,669		80,302			50.0		%	50.0		%
UDR/KFH	Washington, D.C.	3 operating communities	660	20,435		21,596			30.0		%	30.0		%
Texas (b)	Texas	—	—	—		(25,901		)	—		%	20.0		%
Investment in and advances to unconsolidated joint ventures, net, before participating loan investment				687,893		655,519
	Location	Interest Rate	Years To Maturity	Investment at					Income From Participating Loan Investment for the Three Months Ended March 31,
				March 31, 2015		December 31, 2014			2015			2014
Participating loan investment:
Steele Creek	Denver, CO	6.5%	2.3	75,647		62,707			$	1,154		$	321
Total investment in and advances to unconsolidated joint ventures, net				$	763,540	$	718,226

(a) The number of apartment homes for the communities under development presented in the table above is based on the projected number of total homes. As of March 31, 2015, no apartment homes had been completed in Other UDR/MetLife Development Joint Ventures.

(b) In January 2015, the eight communities held by the Texas joint venture were sold, generating net proceeds to UDR of $43.5 million. The Company recorded promote and disposition fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale.

Subsequent to quarter end, the Company entered into a joint venture agreement with real estate private equity firm, The Wolff Company (“Wolff”), to invest $136 million for a 48 percent interest in a portfolio of five communities that are currently under construction. The transaction is expected to close in May 2015. The communities are located in three of the Company’s core, coastal markets: Metro Seattle, Los Angeles and Orange County, CA. UDR will earn a 6.5 percent preferred return on its $136 million investment through each individual community’s date of stabilization, defined as when a community reaches 80 percent occupancy for ninety consecutive days, while Wolff is allocated all income and expense during the pre-stabilization period. Upon stabilization, income and expense will be shared based on each partner’s ownership percentage. The Company will serve as property manager and be paid a management fee during the lease-up phase and subsequent operation of each of the communities.

The Company has a fixed price option to acquire Wolff’s remaining interest in each community beginning one year after completion. If the options are exercised for all five communities, the Company’s total price will be $597 million. In the event the Company does not exercise its options to purchase at least two communities, Wolff will be entitled to a 6.5 percent return on its implied equity in the communities not acquired. Wolff is providing certain guaranties and there will be construction loans on all five communities. Once completed the five communities will contain 1,533 homes.

As of March 31, 2015 and December 31, 2014, the Company had deferred fees and deferred profit from the sale of properties to joint ventures or partnerships of $5.6 million and $28.5 million, respectively, which will be recognized through earnings over the weighted average life of the related properties, upon the disposition of the properties to a third party, or upon completion of certain development obligations.

The Company recognized management fees for our management of the joint ventures and partnerships of $2.6 million and $3.3 million for the three months endedMarch 31, 2015 and 2014, respectively. The management fees are included in Joint venture management and other fees on the Consolidated Statements of Operations.

The Company may, in the future, make additional capital contributions to certain of our joint ventures and partnerships should additional capital contributions be necessary to fund acquisitions or operations.

We evaluate our investments in unconsolidated joint ventures and partnerships when events or changes in circumstances indicate that there may be an other-than-temporary decline in value. We consider various factors to determine if a decrease in the value of the investment is other-than-temporary. The Company did not recognize any other-than-temporary decreases in the value of its investments in unconsolidated joint ventures or partnerships during the three months endedMarch 31, 2015 and 2014.

Combined summary balance sheets relating to all of the unconsolidated joint ventures and partnerships (not just our proportionate share) are presented below as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	March 31, 2015		December 31, 2014
Total real estate, net	$	2,970,102	$	2,941,803
Assets held for sale	—		216,196
Cash and cash equivalents	29,544		32,544
Other assets	31,162		28,707
Total assets	$	3,030,808	$	3,219,250
Amount due to UDR	$	4,691	$	2,997
Third party debt	1,514,886		1,504,477
Liabilities held for sale	—		229,706
Accounts payable and accrued liabilities	52,146		44,335
Total liabilities	1,571,723		1,781,515
Total equity	1,459,085		1,437,735
Total liabilities and equity	$	3,030,808	$	3,219,250
UDR’s investment in unconsolidated joint ventures	$	763,540	$	718,226

Combined summary financial information relating to all of the unconsolidated joint ventures’ and partnerships’ operations (not just our proportionate share), is presented below for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total revenues	$	54,546		$	38,955
Property operating expenses	(20,168		)	(14,360		)
Real estate depreciation and amortization	(19,351		)	(14,688		)
Operating income/(loss)	15,027			9,907
Interest expense	(16,061		)	(12,151		)
Income/(loss) from discontinued operations	182,488			(29,997		)
Net income/(loss)	$	181,454		$	(32,241	)
UDR income/(loss) from unconsolidated entities	$	59,159		$	(3,565	)

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Derivatives and Hedging Activity

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

DERIVATIVES AND HEDGING ACTIVITY

Risk Management Objective of Using Derivatives

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its debt funding and through the use of derivative financial instruments. Specifically, the Company may enter into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s investments and borrowings.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps and caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up front premium.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three months endedMarch 31, 2015 and 2014, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months endedMarch 31, 2015 and 2014, the Company recorded no ineffectiveness to earnings.

Amounts reported in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate debt. Through December 31, 2015, the Company estimates that an additional $6.3 million will be reclassified as an increase to interest expense.

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	9	$	565,000
Interest rate caps	3	$	243,079

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	$	96,409

Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	28	86		$	17,112	$	10,368
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Tabular Disclosure of the Effect of Derivative Instruments on the Consolidated Statements of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)						Gain/(Loss) Recognized in Interest expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2015			2014			2015			2014			2015		2014
Three Months Ended March 31,
Interest rate products	$	(7,552	)	$	(55	)	$	(737	)	$	(1,532	)	$	—	$	—

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Credit-risk-related Contingent Features

The Company has agreements with some of its derivative counterparties that contain a provision where (1) if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations; or (2) the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness.

Certain of the Company’s agreements with its derivative counterparties contain provisions where, if there is a change in the Company’s financial condition that materially changes the Company’s creditworthiness in an adverse manner, the Company may be required to fully collateralize its obligations under the derivative instrument.

The Company also has an agreement with a derivative counterparty that incorporates the loan and financial covenant provisions of the Company’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with these covenant provisions would result in the Company being in default on any derivative instrument obligations covered by the agreement.

As of March 31, 2015, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $17.5 million. As of March 31, 2015, the Company has not posted any collateral related to these agreements. If the Company had breached any of these provisions at March 31, 2015, it may have been required to settle its obligations under the agreements at their termination value of $17.5 million.

Tabular Disclosure of Offsetting Derivatives

Company has elected not to offset derivative positions in the consolidated financial statements. The tables below present the effect on its financial position had the Company made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014(dollar in thousands):

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Received		Net Amount
March 31, 2015	$	29	$	—	$	29	$	—		$	—	$	29
December 31, 2014	$	88	$	—	$	88	$	(27	)	$	—	$	61

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Posted		Net Amount
March 31, 2015	$	17,112	$	—	$	17,112	$	—		$	—	$	17,112
December 31, 2014	$	10,368	$	—	$	10,368	$	(27	)	$	—	$	10,341

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

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Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

DERIVATIVES AND HEDGING ACTIVITY

DERIVATIVES AND HEDGING ACTIVITY

Risk Management Objective of Using Derivatives

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its debt funding and through the use of derivative financial instruments. Specifically, the Company may enter into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s investments and borrowings.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps and caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up front premium.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three months endedMarch 31, 2015 and 2014, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months endedMarch 31, 2015 and 2014, the Company recorded no ineffectiveness to earnings.

Amounts reported in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate debt. Through December 31, 2015, the Company estimates that an additional $6.3 million will be reclassified as an increase to interest expense.

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	9	$	565,000
Interest rate caps	3	$	243,079

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	$	96,409

Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	28	86		$	17,112	$	10,368
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Tabular Disclosure of the Effect of Derivative Instruments on the Consolidated Statements of Operations

The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)						Gain/(Loss) Recognized in Interest expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2015			2014			2015			2014			2015		2014
Three Months Ended March 31,
Interest rate products	$	(7,552	)	$	(55	)	$	(737	)	$	(1,532	)	$	—	$	—

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Credit-risk-related Contingent Features

The Company has agreements with some of its derivative counterparties that contain a provision where (1) if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations; or (2) the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness.

Certain of the Company’s agreements with its derivative counterparties contain provisions where, if there is a change in the Company’s financial condition that materially changes the Company’s creditworthiness in an adverse manner, the Company may be required to fully collateralize its obligations under the derivative instrument.

The Company also has an agreement with a derivative counterparty that incorporates the loan and financial covenant provisions of the Company’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with these covenant provisions would result in the Company being in default on any derivative instrument obligations covered by the agreement.

As of March 31, 2015, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $17.5 million. As of March 31, 2015, the Company has not posted any collateral related to these agreements. If the Company had breached any of these provisions at March 31, 2015, it may have been required to settle its obligations under the agreements at their termination value of $17.5 million.

Tabular Disclosure of Offsetting Derivatives

Company has elected not to offset derivative positions in the consolidated financial statements. The tables below present the effect on its financial position had the Company made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014(dollar in thousands):

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Received		Net Amount
March 31, 2015	$	29	$	—	$	29	$	—		$	—	$	29
December 31, 2014	$	88	$	—	$	88	$	(27	)	$	—	$	61

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Posted		Net Amount
March 31, 2015	$	17,112	$	—	$	17,112	$	—		$	—	$	17,112
December 31, 2014	$	10,368	$	—	$	10,368	$	(27	)	$	—	$	10,341

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

DERIVATIVES AND HEDGING ACTIVITY

DERIVATIVES AND HEDGING ACTIVITY

Risk Management Objective of Using Derivatives

The Operating Partnership is exposed to certain risks arising from both its business operations and economic conditions. The General Partner principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The General Partner manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its debt funding and through the use of derivative financial instruments. Specifically, the General Partner enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The General Partner’s and the Operating Partnership’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the General Partner’s known or expected cash payments principally related to the General Partner’s borrowings.

Cash Flow Hedges of Interest Rate Risk

The General Partner’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the General Partner primarily uses interest rate swaps and caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the General Partner making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up front premium.

A portion of the General Partner’s interest rate derivatives have been allocated to the Operating Partnership based on the General Partner’s underlying debt instruments allocated to the Operating Partnership. (See Note 4, Debt.)

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated other comprehensive income/(loss), net in the Consolidated Balance Sheets and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three months endedMarch 31, 2015 and 2014, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The Operating Partnership recorded no gain or loss from ineffectiveness during the three months endedMarch 31, 2015 and 2014.

Amounts reported in Accumulated other comprehensive income/(loss), net related to derivatives will be reclassified to interest expense as interest payments are made on the General Partner’s variable-rate debt that is allocated to the Operating Partnership. Through December 31, 2015, we estimate that an additional $691,000 will be reclassified as an increase to interest expense.

As of March 31, 2015, the Operating Partnership had the following outstanding interest rate derivatives designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	1	$	46,272
Interest rate caps	2	$	166,341

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, we had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	89,220

Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet

The table below presents the fair value of the Operating Partnership’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	16	$	37	$	686	$	918
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Tabular Disclosure of the Effect of Derivative Instruments on the Consolidated Statements of Operations

The tables below present the effect of the derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)
Derivatives in Cash Flow Hedging Relationships	2015			2014			2015			2014
Three Months Ended March 31,
Interest rate products	$	(51	)	$	(51	)	$	(286	)	$	(623	)

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Credit-risk-related Contingent Features

The General Partner has agreements with some of its derivative counterparties that contain a provision where (1) if the General Partner defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the General Partner could also be declared in default on its derivative obligations; or (2) the General Partner could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the General Partner’s default on the indebtedness.

Certain of the General Partner’s agreements with its derivative counterparties contain provisions where if there is a change in the General Partner’s financial condition that materially changes the General Partner’s creditworthiness in an adverse manner, the General Partner may be required to fully collateralize its obligations under the derivative instrument. At March 31, 2015 and December 31, 2014, no cash collateral was posted or required to be posted by the General Partner or by a counterparty.

The General Partner also has an agreement with a derivative counterparty that incorporates the loan and financial covenant provisions of the General Partner’s indebtedness with a lender affiliate of the derivative counterparty. Failure to comply with these covenant provisions would result in the General Partner being in default on any derivative instrument obligations covered by the agreement.

The General Partner has certain agreements with some of its derivative counterparties that contain a provision where in the event of default by the General Partner or the counterparty, the right of setoff may be exercised. Any amount payable to one party by the other party may be reduced by its setoff against any amounts payable by the other party. Events that give rise to default by either party may include, but are not limited to, the failure to pay or deliver payment under the derivative contract, the failure to comply with or perform under the derivative agreement, bankruptcy, a merger without assumption of the derivative agreement, or in a merger, a surviving entity’s creditworthiness is materially weaker than the original party to the derivative agreement.

As of March 31, 2015, the fair value of derivatives in a net liability position that were allocated to the Operating Partnership, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $774,000. As of March 31, 2015, the General Partner has not posted any collateral related to these agreements. If the General Partner had breached any of these provisions at March 31, 2015, it would have been required to settle its obligations under the agreements at their termination value of $774,000.

The General Partner has elected not to offset derivative positions in the consolidated financial statements. The table below presents the effect on the Operating Partnership’s financial position had the General Partner made the election to offset its derivative positions as of March 31, 2015 and December 31, 2014:

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Received		Net Amount
March 31, 2015	$	17	$	—	$	17	$	—	$	—	$	17
December 31, 2014	$	39	$	—	$	39	$	—	$	—	$	39

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments		Cash Collateral Posted		Net Amount
March 31, 2015	$	686	$	—	$	686	$	—	$	—	$	686
December 31, 2014	$	918	$	—	$	918	$	—	$	—	$	918

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

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Consolidated Statements of Comprehensive Income / (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income/(loss)	$ 76,417	$ 19,012
Other comprehensive income/(loss), including portion attributable to noncontrolling interests:
Unrealized holding gain/(loss)	(7,552)	(55)
(Gain)/loss reclassifed into earnings from other comprehensive income/(loss)	737	1,532
Other comprehensive income/(loss), including portion attributable to noncontrolling interests	(6,815)	1,477
Comprehensive income/(loss)	69,602	20,489
Comprehensive (income)/loss attributable to noncontrolling interests	(2,371)	(707)
Comprehensive income/(loss) attributable to UDR, Inc.	$ 67,231	$ 19,782

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Stock Based Compensation

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK BASED COMPENSATION

STOCK BASED COMPENSATION

The Company recognized stock based compensation expense, inclusive of awards granted to our independent directors, of $4.5 million and $3.7 million during the three months endedMarch 31, 2015 and 2014, respectively.

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Derivatives and Hedging Activity (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivative [Line Items]
Number instruments	9
Notional	$ 565,000
Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	3
Notional	243,079
Not Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	1
Notional	$ 96,409

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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Notes receivable

The following table summarizes our notes receivable, net as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Interest rate at		Balance outstanding
	March 31, 2015		March 31, 2015		December 31, 2014
Note due February 2017 (a)	10.00	%	$	12,994	$	11,869
Note due July 2017 (b)	8.00	%	2,500		2,500
Total notes receivable, net			$	15,494	$	14,369

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Real estate commitments

The following summarizes the Company’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)			Expected Costs to Complete			Average Ownership Stake
Wholly-owned — under development	1	$	196,653	(b)	$	21,047		100	%
Wholly-owned — redevelopment	2	90,382		(b)	22,618			100	%
Joint ventures:
Unconsolidated joint ventures	4	285,730			189,037		(c)	Various
Participating loan investments	1	75,647		(d)	16,362		(e)	0	%
		$	648,412		$	249,064

(a) Represents 100% of project costs incurred to date.

(b) Costs incurred to date include $11.1 million and $2.3 million of accruedfixed assets for development and redevelopment, respectively.

(c) Represents UDR’s proportionate share of expected remaining costs to complete.

(d) Represents the participating loan balance funded as of March 31, 2015.

(e) Represents UDR’s remaining participating loan commitment for Steele Creek.

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Secured and Unsecured Debt (Details Textual) (USD $)	3 Months Ended	0 Months Ended	3 Months Ended
	Mar. 31, 2015	Jun. 27, 2014	Mar. 31, 2014	Dec. 31, 2014
Secured Debt (Textual) [Abstract]
Secured debt amount which encumbers real estate owned based upon book value	$ 2,300,000,000
Percentage of secured debt which encumbers real estate owned based upon book value	26.70%
Secured debt amount of real estate owned which is unencumbered	6,200,000,000
Percentage of secured debt of real estate owned which is unencumbered	73.30%
Weighted average interest rate	3.62%
Unamortized fair market adjustment	7,000,000			6,700,000
Borrowings outstanding	1,500,000			1,900,000
Extension period of option on loan	6 months
Line of Credit Facility, Interest Rate Description	100
Line of Credit Facility, Commitment Fee Description	15
Fixed Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	978,440,000			969,296,000
Weighted average interest rate	5.28%
Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	392,233,000			392,233,000
Weighted average interest rate	1.44126%
3.75 MTN Due July 2024 [Member]
Secured Debt (Textual) [Abstract]
Weighted average interest rate	3.75%
Unamortized fair market adjustment	964,000			990,000
Debt Instrument, Maturity Date		Jul. 01, 2024
Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Weighted average interest rate	5.49%
Debt Instrument, Maturity Date Range, Start	Dec. 09, 2015
Debt instrument, maturity date range, end	May 01, 2019
Notes payable minimum interest rates range	3.43%
Notes payable maximum interest rates range	6.16%
Mortgages Notes Payable [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Weighted average interest rate	1.94%
Debt Assumed As Part of Acquisition [Member]
Secured Debt (Textual) [Abstract]
Amortization of Debt Discount (Premium)	1,100,000		1,300,000
Tax Exempt Notes Payable [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Weighted average interest rate	0.76%
Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Debt, Weighted Average Interest Rate	5.12%
Debt Instrument, Maturity Date Range, Start	May 01, 2017
Debt instrument, maturity date range, end	Jul. 01, 2023
Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Debt Instrument, Interest Rate at Period End	1.62%
Tax Exempt Secured Notes Payable [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Debt Instrument, Maturity Date Range, Start	Aug. 01, 2019
Debt instrument, maturity date range, end	Mar. 20, 2032
Notes payable minimum interest rates range	0.76%
Notes payable maximum interest rates range	0.77%
Fannie Mae [Member]
Secured Debt (Textual) [Abstract]
Borrowings outstanding	833,365,000			834,282,000
1.67% Term Notes due December 2016 [Member]
Secured Debt (Textual) [Abstract]
Weighted average interest rate	1.32%
Debt Instrument, Maturity Date	Jun. 01, 2018
UDR Bank Credit Facility [Member]
Secured Debt (Textual) [Abstract]
Credit facilities with aggregate commitment	900,000,000			900,000,000
Increment in Unsecured Revolving Credit Facility Under Certain Circumstances	1,450,000,000
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	567,169,000			568,086,000
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	266,196,000			266,196,000
Mortgages Notes Payable [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	411,271,000			401,210,000
Mortgages Notes Payable [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Mortgages Notes Payable [Member] | Variable Rate Debt [Member]
Secured Debt (Textual) [Abstract]
Secured debt including debt on real estate held for sale	$ 31,337,000			$ 31,337,000

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Real estate owned:
Real estate held for investment	$ 8,256,995	$ 8,205,627
Less: accumulated depreciation	(2,521,958)	(2,434,772)
Real estate held for investment, net	5,735,037	5,770,855
Real estate under development (net of accumulated depreciation of $142 and $0, respectively)	196,511	177,632
Total real estate owned, net of accumulated depreciation	5,931,548	5,948,487
Cash and cash equivalents	6,274	15,224
Restricted cash	23,266	22,340
Deferred financing costs, net	21,676	22,686
Notes receivable, net	15,494	14,369
Investment in and advances to unconsolidated joint ventures, net	763,540	718,226
Other assets	96,713	105,202
Total assets	6,858,511	6,846,534
Liabilities:
Secured debt	1,370,673	1,361,529
Unsecured debt	2,145,996	2,221,576
Real estate taxes payable	21,848	15,978
Accrued interest payable	23,460	34,215
Security deposits and prepaid rent	34,624	34,064
Distributions payable	75,129	69,460
Accounts payable, accrued expenses, and other liabilities	63,857	91,282
Total liabilities	3,735,587	3,828,104
Redeemable noncontrolling interests in the Operating Partnership	311,883	282,480
Equity:
8.00% Series E Cumulative Convertible; 2,803,812 shares and outstanding at March 31, 2015 and December 31, 2014	46,571	46,571
Common stock, $0.01 par value; 350,000,000 shares authorized; 258,988,739 and 255,114,603 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	2,590	2,551
Additional paid-in capital	4,334,418	4,223,747
Distributions in excess of net income	(1,557,953)	(1,528,917)
Accumulated other comprehensive income/(loss), net	(15,445)	(8,855)
Total stockholders' equity	2,810,181	2,735,097
Noncontrolling interests	860	853
Total equity	2,811,041	2,735,950
Total liabilities and equity	$ 6,858,511	$ 6,846,534

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Secured and Unsecured Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Secured debt instruments

The following is a summary of our secured and unsecured debt at March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Secured Debt:
Fixed Rate Debt
Mortgage notes payable (a)	$	411,271	$	401,210	5.49	%	1.4	7
Fannie Mae credit facilities (b)	567,169		568,086		5.12	%	3.8	22
Total fixed rate secured debt	978,440		969,296		5.28	%	2.8	29
Variable Rate Debt
Mortgage notes payable	31,337		31,337		1.94	%	1.8	1
Tax-exempt secured notes payable (c)	94,700		94,700		0.76	%	7.9	2
Fannie Mae credit facilities (b)	266,196		266,196		1.62	%	4.9	7
Total variable rate secured debt	392,233		392,233		1.44	%	5.4	10
Total Secured Debt	1,370,673		1,361,529		4.18	%	3.5	39
Unsecured Debt:
Commercial Banks
Borrowings outstanding under an unsecured credit facility due December 2017 (d) (f)	389,000		152,500		1.08	%	2.7
Senior Unsecured Notes
5.25% Medium-Term Notes due January 2015 (net of discounts of $0 and $6, respectively) (e)	—		325,169		—	%	—
5.25% Medium-Term Notes due January 2016	83,260		83,260		5.25	%	0.8
6.21% Medium-Term Notes due July 2016	12,865		—		6.21	%	1.3
4.25% Medium-Term Notes due June 2018 (net of discounts of $1,358 and $1,465, respectively) (f)	298,642		298,535		4.25	%	3.2
1.70% Term Notes due June 2018 (f)	215,000		215,000		1.70	%	3.2
1.53% Term Notes due June 2018 (f)	100,000		100,000		1.53	%	3.2
1.32% Term Notes due June 2018 (f)	35,000		35,000		1.32	%	3.2
3.70% Medium-Term Notes due October 2020 (net of discounts of $44 and $46, respectively) (f)	299,956		299,954		3.70	%	5.5
4.63% Medium-Term Notes due January 2022 (net of discounts of $2,433 and $2,523, respectively) (f)	397,567		397,477		4.63	%	6.8
3.75% Medium-Term Notes due July 2024 (net of discount of $964 and $990, respectively) (f)	299,036		299,010		3.75	%	9.3
8.50% Debentures due September 2024	15,644		15,644		8.50	%	9.5
Other	26		27		N/A		N/A
Total Unsecured Debt	2,145,996		2,221,576		3.26	%	4.9
Total Debt	$	3,516,669	$	3,583,105	3.62	%	4.4

Secured credit facilities

Further information related to these credit facilities is as follows (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	833,365		$	834,282
Weighted average borrowings during the period ended	833,697			835,873
Maximum daily borrowings during the period ended	834,003			837,564
Weighted average interest rate during the period ended	4.0		%	4.1		%
Weighted average interest rate at the end of the period	4.0		%	4.0		%

Schedule of Maturities of Long-term Debt [Table Text Block]

The aggregate maturities, including amortizing principal payments of unsecured and secured debt, of total debt for the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

Year	Total Fixed Secured Debt		Total Variable Secured Debt		Total Secured Debt		Total Unsecured Debt (a)		Total Debt
2015	$	194,779	$	—	$	194,779	$	114	$	194,893
2016	148,223		—		148,223		94,468		242,691
2017	177,882		96,337		274,219		389,000		663,219
2018	121,685		104,787		226,472		648,444		874,916
2019	245,871		67,700		313,571		—		313,571
Thereafter	90,000		123,409		213,409		1,013,970		1,227,379
Total	$	978,440	$	392,233	$	1,370,673	$	2,145,996	$	3,516,669

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Commitments and Contingencies (UNITED DOMINION REALTY, L.P.) Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Loss Contingencies [Line Items]
Number of communities owned (in communities)	138
Cost Incurred to Date	$ 648,412
United Dominion Reality L.P. [Member]
Loss Contingencies [Line Items]
Number of communities owned (in communities)	68
Wholly owned — redevelopment [Member]
Loss Contingencies [Line Items]
Capital Expenditures Incurred but Not yet Paid	2,300
Number of communities owned (in communities)	2
Cost Incurred to Date	90,382
Wholly owned — redevelopment [Member] | United Dominion Reality L.P. [Member]
Loss Contingencies [Line Items]
Capital Expenditures Incurred but Not yet Paid	515
Number of communities owned (in communities)	1
Cost Incurred to Date	2,310
Expected Costs to Complete	12,690
Wholly owned — under development [Member]
Loss Contingencies [Line Items]
Capital Expenditures Incurred but Not yet Paid	11,100
Number of communities owned (in communities)	1
Cost Incurred to Date	$ 196,653

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Consolidated Statements of Operations (Unaudited) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
REVENUES
Rental Income	$ 207,047,000	$ 194,352,000
Joint venture management and other fees	12,706,000	3,687,000
Total revenues	219,753,000	198,039,000
OPERATING EXPENSES
Property operating and maintenance	37,250,000	36,720,000
Real estate taxes and insurance	26,222,000	25,431,000
Property management	5,694,000	5,345,000
Other operating expenses	1,766,000	1,926,000
Real estate depreciation and amortization	88,777,000	88,533,000
General and administrative	12,152,000	11,994,000
Casualty-related (recoveries)/charges, net	996,000	500,000
Other depreciation and amortization	1,623,000	1,080,000
Total operating expenses	174,480,000	171,529,000
Operating income	45,273,000	26,510,000
Income/(loss) from unconsolidated entities	59,159,000	(3,565,000)
Interest expense	(28,800,000)	32,884,000
Interest and other income/(expense), net	360,000	1,415,000
Income/(loss) before income taxes, discountinued operations, and gain/(loss) on sale of real estate owned	75,992,000	(8,524,000)
Tax benefit/(expense), net	425,000	3,329,000
Income/(loss) from continuing operations	76,417,000	(5,195,000)
Income/(loss) from discontinued operations, net of tax	0	(87,000)
Income/(loss) before gain/(loss) of real estate owned	76,417,000	(5,282,000)
Gains/(loss) on sales of real estate, net of tax	0	24,294,000
Net income/(loss)	76,417,000	19,012,000
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588,000)	(647,000)
Net (income)/loss attributable to noncontrolling interests	(7,000)	(4,000)
Net income/(loss) attributable to UDR, Inc.	73,822,000	18,361,000
Net (loss)/income attributable to common stockholders	72,891,000	17,430,000
Income/(loss) per weighted average common share - basic and diluted:
Income/(loss) from continuing operations attributable to common stockholders	$ 0.28	$ 0.07
Income/(loss) from discontinued operations attributable to common stockholders,	$ 0.00	$ 0.00
Net income/(loss) attributable to common stockholders	$ 0.28	$ 0.07
Income/(loss) from continuing operations attributable to common stockholders,	$ 0.28	$ 0.07
Income from discontinued operations attributable to common stockholders	$ 0.00	$ 0.00
Net income/(loss) attributable to common stockholders	$ 0.28	$ 0.07
Common distributions declared per share	$ 0.2775	$ 0.2600
Weighted average number of common shares outstanding — basic	256,834	250,177
Weighted average number of common shares outstanding — diluted	258,662	251,822
Series E Preferred Stock [Member]
OPERATING EXPENSES
Distributions to preferred stockholders - Series E (Convertible)	$ 931,000	$ 931,000

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Capital Structure (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Limited Partners' Capital Account [Line Items]
Redeemable noncontrolling interests in the Operating Partnership	311,883	282,480
United Dominion Reality L.P. [Member]
Limited Partners' Capital Account [Line Items]
General Partnership units outstanding	110,883	110,883
Limited partnership units owned	183,167,815	183,167,815
Limited Partners' Capital Account, Required Period To Be Outstanding Before Unit is Redeemable	1 year
UDR, Inc. [Member]
Limited Partners' Capital Account [Line Items]
Limited partnership units owned	174,002,876	174,002,342
Percentage of units	95.00%	95.00%
Non-affiliated Partners [Member]
Limited Partners' Capital Account [Line Items]
Limited partnership units owned	9,164,939	9,165,473
Percentage of units	5.00%	5.00%
Class A Limited Partner [Member]
Limited Partners' Capital Account [Line Items]
Limited partnership units owned	1,751,671
Cumulative, annual, non-compounded preferred return on Class A Partnership units	8.00%
Value of Class A Partnership units (in dollars per unit)	16.61
Class A Limited Partner [Member] | United Dominion Reality L.P. [Member]
Limited Partners' Capital Account [Line Items]
Limited partnership units owned	1,873,332	1,873,332
Class A Limited Partner [Member] | UDR, Inc. [Member]
Limited Partners' Capital Account [Line Items]
Limited partnership units owned	121,661

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Real Estate Owned (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary of carrying amounts for real estate owned (at cost)
Land	$ 1,984,019
Depreciable property - held and used:
Building, Improvements, and Furniture, Fixtures and Equipment	6,272,976	6,225,406
Under development:
Real estate under development (net of accumulated depreciation of $142 and $0, respectively)	196,511	177,632
Real estate owned	8,453,648	8,383,259
Real Estates Owned Accumulated Depreciation	2,522,100	2,434,772
Real estate owned, net	5,931,548	5,948,487
Land [Member]
Under development:
Real estate under development (net of accumulated depreciation of $142 and $0, respectively)	24,584	1,980,221
Building and Building Improvements [Member]
Depreciable property - held and used:
Real Estate Held-for-sale		24,584
Construction in progress [Member]
Under development:
Real estate under development (net of accumulated depreciation of $142 and $0, respectively)	172,069
Furniture and Fixtures [Member]
Depreciable property - held and used:
Real Estate Held-for-sale		$ 153,048

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Commitments and Contingencies (UNITED DOMINION REALTY, L.P.) Commitments and Contingencies (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Commitments

Real Estate Under Development

The following summarizes the Company’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)			Expected Costs to Complete			Average Ownership Stake
Wholly-owned — under development	1	$	196,653	(b)	$	21,047		100	%
Wholly-owned — redevelopment	2	90,382		(b)	22,618			100	%
Joint ventures:
Unconsolidated joint ventures	4	285,730			189,037		(c)	Various
Participating loan investments	1	75,647		(d)	16,362		(e)	0	%
		$	648,412		$	249,064

(a) Represents 100% of project costs incurred to date.

(b) Costs incurred to date include $11.1 million and $2.3 million of accruedfixed assets for development and redevelopment, respectively.

(c) Represents UDR’s proportionate share of expected remaining costs to complete.

(d) Represents the participating loan balance funded as of March 31, 2015.

(e) Represents UDR’s remaining participating loan commitment for Steele Creek.

Contingencies

Litigation and Legal Matters

The Company is subject to various legal proceedings and claims arising in the ordinary course of business. The Company cannot determine the ultimate liability with respect to such legal proceedings and claims at this time. The Company believes that such liability, to the extent not provided for through insurance or otherwise, will not have a material adverse effect on our financial condition, results of operations or cash flow.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Commitments

Real Estate Under Development

The following summarizes the Operating Partnership’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)	Expected Costs to Complete (unaudited)
Real estate communities — redevelopment	1	2,310	12,690

(a) Costs incurred to date include $515,000 of accruedfixed assets for redevelopment.

Contingencies

Litigation and Legal Matters

The Operating Partnership is subject to various legal proceedings and claims arising in the ordinary course of business. The Operating Partnership cannot determine the ultimate liability with respect to such legal proceedings and claims at this time. The General Partner believes that such liability, to the extent not provided for through insurance or otherwise, will not have a material adverse effect on the Operating Partnership’s financial condition, results of operations or cash flow.

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Joint Ventures (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	138
Community Threshold, Period Above Occupancy Threshold	3 months
Secured Debt	$ 1,370,673,000		$ 1,361,529,000
Joint Ventures
Real Estate Owned Gross	8,453,648,000		8,383,259,000
Unamortized discount	7,000,000		6,700,000
First installment of payable incurred in partial consideration for acquisition of ownership interest in joint venture	194,893,000
Second installment of payable incurred in partial consideration for acquisition of ownership interest in joint venture	242,691,000
Interest expense	(28,800,000)	32,884,000
Company's equity investment in joint venture	763,540,000		718,226,000
Deferred profit from the sale of properties	5,600,000		28,500,000
Management fees for our involvement in the joint ventures	2,600,000	3,300,000
Fee Income from the Sale of Real Estate	9,634,000	0
Unconsolidated Joint Venture Four Texas [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Sale of Property, Plant, and Equipment	43,500,000
Joint Ventures
Deferred profit from the sale of properties	24,200,000
Fee Income from the Sale of Real Estate	9,600,000
Gain (Loss) on Disposition of Property Plant Equipment	59,100,000
Unconsolidated Joint Venture 399 Fremont [Member]
Schedule of Equity Method Investments [Line Items]
Number of apartments of development community			0
Unconsolidated Joint Venture Wolff [Member]
Schedule of Equity Method Investments [Line Items]
Total Fixed Price Option Sales Price	597,000,000
Number of Markets Operating Within	3
Preferred Return Interest Rate	650.00%
Community Threshold, Percent Occupancy Threshold	8000.00%
Community Threshold, Period Above Occupancy Threshold	90 days
Fixed Price Option Period	1 year
Joint Ventures
Equity Method Investment Cost of Ownership Interest	136,000,000
Equity Method Investment, Ownership Percentage	4800.00%
Land [Member]
Joint Ventures
Gain (Loss) on Disposition of Property Plant Equipment	1,100,000
Land [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	1
Operating Community [Member]
Joint Ventures
Gain (Loss) on Disposition of Property Plant Equipment	23,300,000
Operating Community [Member] | Unconsolidated Joint Venture Vitruvian Park [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	3
Number of apartment homes	1,130
Joint Ventures
Company's equity investment in joint venture	78,669,000		80,302,000
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Operating Community [Member] | Unconsolidated Joint Venture UDR Met Life I Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	4
Number of apartment homes	0
Joint Ventures
Company's equity investment in joint venture	13,473,000		13,306,000
Equity Method Investment, Ownership Percentage	15.70%		15.70%
Operating Community [Member] | Unconsolidated Joint Venture UDR MetLife II Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	21
Number of apartment homes	4,642
Joint Ventures
Company's equity investment in joint venture	429,635,000		431,277,000
Equity Method Investment, Ownership Percentage	50.00%		50.00%
Operating Community [Member] | Unconsolidated Joint Venture Three Washington DC [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	3
Number of apartment homes	660
Joint Ventures
Company's equity investment in joint venture	20,435,000		21,596,000
Equity Method Investment, Ownership Percentage	30.00%		30.00%
Operating Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	8
Joint Ventures
Equity Method Investment, Ownership Percentage	0.00%		20.00%
Operating Community [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	1
Number of apartment homes	1,437
Joint Ventures
Company's equity investment in joint venture	145,681,000		134,939,000
Equity Method Investment, Ownership Percentage	50.60%		50.60%
Operating Community [Member] | Unconsolidated Joint Venture Wolff [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	2
Number of apartment homes	1,533
Development Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	0
Number of apartment homes	0
Joint Ventures
Company's equity investment in joint venture	$ 0		$ (25,901,000)
Development Community [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	4
Development Community [Member] | Unconsolidated Joint Venture Wolff [Member]
Schedule of Equity Method Investments [Line Items]
Number of Real Estate Properties	5

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Joint Ventures

3 Months Ended

Mar. 31, 2015

Schedule of Equity Method Investments [Line Items]

Equity Method Investments and Joint Ventures Disclosure [Text Block]

JOINT VENTURES AND PARTNERSHIPS

UDR has entered into joint ventures and partnerships with unrelated third parties to acquire real estate assets that are either consolidated and included in Real estate owned on the Consolidated Balance Sheets or are accounted for under the equity method of accounting, and are included in Investment in and advances to unconsolidated joint ventures, net on the Consolidated Balance Sheets. The Company consolidates the entities that we control as well as any variable interest entity where we are the primary beneficiary. In addition, the Company consolidates any joint venture or partnership in which we are the general partner or managing member and the third party does not have the ability to substantively participate in the decision-making process nor the ability to remove us as general partner or managing member without cause.

UDR’s joint ventures and partnerships are funded with a combination of debt and equity. Our losses are limited to our investment and except as noted below, the Company does not guarantee any debt, capital payout or other obligations associated with our joint ventures and partnerships.

Unconsolidated Joint Ventures and Partnerships

The Company recognizes earnings or losses from our investments in unconsolidated joint ventures and partnerships consisting of our proportionate share of the net earnings or losses of the joint ventures and partnerships. In addition, we may earn fees for providing management services to the unconsolidated joint ventures and partnerships.

The following table summarizes the Company’s investment in and advances to unconsolidated joint ventures and partnerships, net, which are accounted for under the equity method of accounting as of March 31, 2015 and December 31, 2014(dollars in thousands):

Joint Venture	Location of Properties	Number of Properties	Number of Apartment Homes	Investment at					UDR’s Ownership Interest
		March 31, 2015	March 31, 2015	March 31, 2015		December 31, 2014			March 31, 2015			December 31, 2014
Operating and development:
UDR/MetLife I	Various	4 land parcels	—	$	13,473	$	13,306		15.7		%	15.7		%
UDR/MetLife II	Various	21 operating communities	4,642	429,635		431,277			50.0		%	50.0		%
Other UDR/MetLife Development Joint Ventures		1 operating community;
		4 development communities (a);
	Various	1 land parcels	1,437	145,681		134,939			50.6		%	50.6		%
UDR/MetLife Vitruvian Park®	Addison, TX	3 operating communities
		6 land parcels	1,130	78,669		80,302			50.0		%	50.0		%
UDR/KFH	Washington, D.C.	3 operating communities	660	20,435		21,596			30.0		%	30.0		%
Texas (b)	Texas	—	—	—		(25,901		)	—		%	20.0		%
Investment in and advances to unconsolidated joint ventures, net, before participating loan investment				687,893		655,519
	Location	Interest Rate	Years To Maturity	Investment at					Income From Participating Loan Investment for the Three Months Ended March 31,
				March 31, 2015		December 31, 2014			2015			2014
Participating loan investment:
Steele Creek	Denver, CO	6.5%	2.3	75,647		62,707			$	1,154		$	321
Total investment in and advances to unconsolidated joint ventures, net				$	763,540	$	718,226

(a) The number of apartment homes for the communities under development presented in the table above is based on the projected number of total homes. As of March 31, 2015, no apartment homes had been completed in Other UDR/MetLife Development Joint Ventures.

(b) In January 2015, the eight communities held by the Texas joint venture were sold, generating net proceeds to UDR of $43.5 million. The Company recorded promote and disposition fee income of $9.6 million and a gain of $59.1 million (including $24.2 million of previously deferred gains) in connection with the sale.

Subsequent to quarter end, the Company entered into a joint venture agreement with real estate private equity firm, The Wolff Company (“Wolff”), to invest $136 million for a 48 percent interest in a portfolio of five communities that are currently under construction. The transaction is expected to close in May 2015. The communities are located in three of the Company’s core, coastal markets: Metro Seattle, Los Angeles and Orange County, CA. UDR will earn a 6.5 percent preferred return on its $136 million investment through each individual community’s date of stabilization, defined as when a community reaches 80 percent occupancy for ninety consecutive days, while Wolff is allocated all income and expense during the pre-stabilization period. Upon stabilization, income and expense will be shared based on each partner’s ownership percentage. The Company will serve as property manager and be paid a management fee during the lease-up phase and subsequent operation of each of the communities.

The Company has a fixed price option to acquire Wolff’s remaining interest in each community beginning one year after completion. If the options are exercised for all five communities, the Company’s total price will be $597 million. In the event the Company does not exercise its options to purchase at least two communities, Wolff will be entitled to a 6.5 percent return on its implied equity in the communities not acquired. Wolff is providing certain guaranties and there will be construction loans on all five communities. Once completed the five communities will contain 1,533 homes.

As of March 31, 2015 and December 31, 2014, the Company had deferred fees and deferred profit from the sale of properties to joint ventures or partnerships of $5.6 million and $28.5 million, respectively, which will be recognized through earnings over the weighted average life of the related properties, upon the disposition of the properties to a third party, or upon completion of certain development obligations.

The Company recognized management fees for our management of the joint ventures and partnerships of $2.6 million and $3.3 million for the three months endedMarch 31, 2015 and 2014, respectively. The management fees are included in Joint venture management and other fees on the Consolidated Statements of Operations.

The Company may, in the future, make additional capital contributions to certain of our joint ventures and partnerships should additional capital contributions be necessary to fund acquisitions or operations.

We evaluate our investments in unconsolidated joint ventures and partnerships when events or changes in circumstances indicate that there may be an other-than-temporary decline in value. We consider various factors to determine if a decrease in the value of the investment is other-than-temporary. The Company did not recognize any other-than-temporary decreases in the value of its investments in unconsolidated joint ventures or partnerships during the three months endedMarch 31, 2015 and 2014.

Combined summary balance sheets relating to all of the unconsolidated joint ventures and partnerships (not just our proportionate share) are presented below as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	March 31, 2015		December 31, 2014
Total real estate, net	$	2,970,102	$	2,941,803
Assets held for sale	—		216,196
Cash and cash equivalents	29,544		32,544
Other assets	31,162		28,707
Total assets	$	3,030,808	$	3,219,250
Amount due to UDR	$	4,691	$	2,997
Third party debt	1,514,886		1,504,477
Liabilities held for sale	—		229,706
Accounts payable and accrued liabilities	52,146		44,335
Total liabilities	1,571,723		1,781,515
Total equity	1,459,085		1,437,735
Total liabilities and equity	$	3,030,808	$	3,219,250
UDR’s investment in unconsolidated joint ventures	$	763,540	$	718,226

Combined summary financial information relating to all of the unconsolidated joint ventures’ and partnerships’ operations (not just our proportionate share), is presented below for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015			2014
Total revenues	$	54,546		$	38,955
Property operating expenses	(20,168		)	(14,360		)
Real estate depreciation and amortization	(19,351		)	(14,688		)
Operating income/(loss)	15,027			9,907
Interest expense	(16,061		)	(12,151		)
Income/(loss) from discontinued operations	182,488			(29,997		)
Net income/(loss)	$	181,454		$	(32,241	)
UDR income/(loss) from unconsolidated entities	$	59,159		$	(3,565	)

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Reportable Segments

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

REPORTABLE SEGMENTS

REPORTABLE SEGMENTS

GAAP guidance requires that segment disclosures present the measure(s) used by the chief operating decision maker to decide how to allocate resources and for purposes of assessing such segments’ performance. UDR’s chief operating decision maker is comprised of several members of its executive management team who use several generally accepted industry financial measures to assess the performance of the business for our reportable operating segments.

UDR owns and operates multifamily apartment communities that generate rental and other property related income through the leasing of apartment homes to a diverse base of tenants. The primary financial measures for UDR’s apartment communities are rental income and net operating income (“NOI”). Rental income represents gross market rent less adjustments for concessions, vacancy loss and bad debt. NOI is defined as rental income less direct property rental expenses. Rental expenses include real estate taxes, insurance, personnel, utilities, repairs and maintenance, administrative and marketing. Excluded from NOI is property management expense, which is calculated as 2.75% of property revenue to cover the regional supervision and accounting costs related to consolidated property operations, and land rent. UDR’s chief operating decision maker utilizes NOI as the key measure of segment profit or loss.

UDR’s two reportable segments are Same-Store Communities and Non-Mature Communities/Other:

• Same-Store Communities represent those communities acquired, developed, and stabilized prior to January 1, 2014 and held as of March 31, 2015. A comparison of operating results from the prior year is meaningful as these communities were owned and had stabilized occupancy and operating expenses as of the beginning of the prior period, there is no plan to conduct substantial redevelopment activities, and the community is not held for disposition within the current year. A community is considered to have stabilized occupancy once it achieves 90% occupancy for at least three consecutive months.

• Non-Mature Communities/Other represent those communities that do not meet the criteria to be included in Same-Store Communities, including, but not limited to, recently acquired, developed and redeveloped properties, and the non-apartment components of mixed use properties.

Management evaluates the performance of each of our apartment communities on a Same-Store Community and Non-Mature Community/Other basis, as well as individually and geographically. This is consistent with the aggregation criteria under GAAP as each of our apartment communities generally has similar economic characteristics, facilities, services, and tenants. Therefore, the Company’s reportable segments have been aggregated by geography in a manner identical to that which is provided to the chief operating decision maker.

All revenues are from external customers and no single tenant or related group of tenants contributed 10% or more of UDR’s total revenues during the three months endedMarch 31, 2015 and 2014.

The following table details rental income and NOI from continuing and discontinued operations for UDR’s reportable segments for the three months endedMarch 31, 2015 and 2014, and reconciles NOI to Net Income/(Loss) Attributable to UDR, Inc. in the Consolidated Statements of Operations (dollars in thousands):

	Three Months Ended
	March 31, (a)
	2015			2014
Reportable apartment home segment rental income
Same-Store Communities
West Region	$	67,857		$	63,267
Mid-Atlantic Region	42,795			42,049
Southeast Region	27,829			26,497
Northeast Region	20,892			19,803
Southwest Region	14,107			13,467
Non-Mature Communities/Other	33,567			29,317
Total consolidated rental income	$	207,047		$	194,400
Reportable apartment home segment NOI
Same-Store Communities
West Region	$	50,228		$	45,408
Mid-Atlantic Region	29,288			28,835
Southeast Region	18,547			17,872
Northeast Region	15,566			14,546
Southwest Region	8,536			8,358
Non-Mature Communities/Other	21,410			17,105
Total consolidated NOI	143,575			132,124
Reconciling items:
Joint venture management and other fees	12,706			3,687
Property management	(5,694		)	(5,346		)
Other operating expenses	(1,766		)	(1,935		)
Real estate depreciation and amortization	(88,777		)	(88,533		)
General and administrative	(12,152		)	(11,994		)
Casualty-related recoveries/(charges), net	(996		)	(500		)
Other depreciation and amortization	(1,623		)	(1,080		)
Income/(loss) from unconsolidated entities	59,159			(3,565		)
Interest expense	(28,800		)	(32,884		)
Interest and other income/(expense), net	360			1,415
Tax benefit/(expense), net	425			3,329
Gain/(loss) on sale of real estate owned, net of tax	—			24,294
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership	(2,588		)	(647		)
Net (income)/loss attributable to noncontrolling interests	(7		)	(4		)
Net income/(loss) attributable to UDR, Inc.	$	73,822		$	18,361

(a) Same-Store Community population consisted of 36,063 apartment homes.

The following table details the assets of UDR’s reportable segments as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Reportable apartment home segment assets:
Same-Store Communities:
West Region	$	2,626,770		$	2,620,242
Mid-Atlantic Region	1,536,389			1,533,993
Southeast Region	788,668			786,438
Northeast Region	1,078,431			1,076,656
Southwest Region	441,888			440,721
Non-Mature Communities/Other	1,981,502			1,925,209
Total assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Total assets — net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274			15,224
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Notes receivable, net	15,494			14,369
Investment in and advances to unconsolidated joint ventures, net	763,540			718,226
Other assets	96,713			105,202
Total consolidated assets	$	6,858,511		$	6,846,534

Capital expenditures related to our Same-Store Communities totaled $13.3 million and $7.7 million for the three months endedMarch 31, 2015 and 2014, respectively. Capital expenditures related to our Non-Mature Communities/Other totaled $2.5 million and $2.1 million for the three months endedMarch 31, 2015 and 2014.

Markets included in the above geographic segments are as follows:

i. West Region — Orange County, San Francisco, Seattle, Los Angeles, Monterey Peninsula, Other Southern California, and Portland

ii. Mid-Atlantic Region — Metropolitan D.C., Baltimore, Richmond, Norfolk, and Other Mid-Atlantic

iii. Southeast Region — Tampa, Orlando, Nashville, and Other Florida

iv. Northeast Region — New York and Boston

v. Southwest Region — Dallas and Austin

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Reportable Segments (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Segments	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Same Store Communities	36,063
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	$ 219,753	$ 198,039
Reportable apartment home segment NOI	(143,575)	(132,124)
Reconciling items:
Property management	(5,694)	(5,346)
Other operating expenses	(1,766)	(1,935)
Real estate depreciation and amortization	88,777	88,533
General and administrative	(12,152)	(11,994)
Casualty-related (recoveries)/charges, net	996	500
Casualty (Recoveries)/Charges	(996)	(500)
Interest expense	28,800	(32,884)
Gains/(loss) on sales of real estate owned	0	24,294
Net (income)/loss attributable to noncontrolling interests	(7)	(4)
Net income/(loss) attributable to OP unitholders	73,822	18,361
Reportable apartment home segment assets:
Total segment assets	8,453,648			8,383,259
Accumulated depreciation	(2,522,100)			(2,434,772)
Total segment asset - net book value	5,931,548			5,948,487
Reconciling items:
Cash and cash equivalents	6,274	15,891		15,224	30,249
Restricted cash	23,266			22,340
Deferred financing costs, net	21,676			22,686
Other assets	96,713			105,202
Total consolidated assets	6,858,511			6,846,534
Reportable Segment (Textual) [Abstract]
Number of reportable segments	2
Condition for Community considered to have stabilized occupancy	0.9
Time to maintain percent occupancy to be considered a community	3 months
Number of Tenants or related group of tenants that contributed 10% or more of company total revenue	0	0
Same Store Communities Western Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	67,857	63,267
Reportable apartment home segment NOI	(50,228)	(45,408)
Reportable apartment home segment assets:
Total segment assets	2,626,770			2,620,242
Same Store Communities Mid-Atlantic Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	42,795	42,049
Reportable apartment home segment NOI	(29,288)	(28,835)
Reportable apartment home segment assets:
Total segment assets	1,536,389			1,533,993
Same Store Communities Northeast Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	20,892	19,803
Reportable apartment home segment NOI	(15,566)	(14,546)
Reportable apartment home segment assets:
Total segment assets	1,078,431			1,076,656
Same Store Communities Southeastern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	27,829	26,497
Reportable apartment home segment NOI	(18,547)	(17,872)
Reportable apartment home segment assets:
Total segment assets	788,668			786,438
Same Store Communities Southwestern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	14,107	13,467
Reportable apartment home segment NOI	(8,536)	(8,358)
Reportable apartment home segment assets:
Total segment assets	441,888			440,721
Non-Mature communities/Other [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	33,567	29,317
Reportable apartment home segment NOI	(21,410)	(17,105)
Reportable apartment home segment assets:
Total segment assets	1,981,502			1,925,209
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	2,500	2,100
Total Communities [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	207,047	194,400
United Dominion Reality L.P. [Member]
Segment Reporting Information [Line Items]
Same Store Communities	19,209
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment NOI	(78,115)		(72,417)
Reconciling items:
Property management	(3,027)		(2,815)
Other operating expenses	(1,490)		(1,436)
Real estate depreciation and amortization	44,478	44,271
General and administrative	(5,639)		(6,970)
Casualty (Recoveries)/Charges	(593)	(500)	500
Interest expense	(10,771)		(10,014)
Gains/(loss) on sales of real estate owned	24,623	24,402
Net (income)/loss attributable to noncontrolling interests	(394)		(280)
Net income/(loss) attributable to OP unitholders	36,346	30,533	30,533
Reportable apartment home segment assets:
Total segment assets	4,248,795			4,238,770
Accumulated depreciation	(1,447,513)			(1,403,303)
Total segment asset - net book value	2,801,282			2,835,467
Reconciling items:
Cash and cash equivalents	826	853		502	1,897
Restricted cash	14,441			13,811
Deferred financing costs, net	4,118			4,475
Other assets	22,714			24,029
Total consolidated assets	2,843,381			2,878,284
Reportable Segment (Textual) [Abstract]
Number of reportable segments	2
Number of Tenants or related group of tenants that contributed 10% or more of company total revenue	0	0
Related Party Transaction, Management Fee Percentage	2.75%
United Dominion Reality L.P. [Member] | Same-Store [Member]
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	7,900	3,900
United Dominion Reality L.P. [Member] | Same Store Communities Western Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	47,815		44,238
Reportable apartment home segment NOI	(35,277)		(32,089)
Reportable apartment home segment assets:
Total segment assets	1,690,647			1,686,127
United Dominion Reality L.P. [Member] | Same Store Communities Mid-Atlantic Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	17,249		17,246
Reportable apartment home segment NOI	(11,466)		(11,565)
Reportable apartment home segment assets:
Total segment assets	714,425			713,093
United Dominion Reality L.P. [Member] | Same Store Communities Northeast Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	15,072		14,268
Reportable apartment home segment NOI	(11,572)		(10,638)
Reportable apartment home segment assets:
Total segment assets	778,378			777,376
United Dominion Reality L.P. [Member] | Same Store Communities Southeastern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	11,679		11,131
Reportable apartment home segment NOI	(7,710)		(7,457)
Reportable apartment home segment assets:
Total segment assets	334,282			333,428
United Dominion Reality L.P. [Member] | Same Store Communities Southwestern Region [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	6,737		6,553
Reportable apartment home segment NOI	(4,213)		(4,217)
Reportable apartment home segment assets:
Total segment assets	229,627			228,996
United Dominion Reality L.P. [Member] | Non-Mature communities/Other [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	11,543		8,934
Reportable apartment home segment NOI	(7,877)		(6,451)
Reportable apartment home segment assets:
Total segment assets	501,436			499,750
Reportable Segment (Textual) [Abstract]
SEC Schedule III, Real Estate, Improvements	472	256
United Dominion Reality L.P. [Member] | Total Communities [Member]
Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations
Reportable apartment home segment rental income	110,095		102,370
Segment Reconciling Items [Member] | United Dominion Reality L.P. [Member]
Reconciling items:
Real estate depreciation and amortization	$ 44,478		$ 44,271

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Debt (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

DEBT

SECURED AND UNSECURED DEBT

The following is a summary of our secured and unsecured debt at March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Secured Debt:
Fixed Rate Debt
Mortgage notes payable (a)	$	411,271	$	401,210	5.49	%	1.4	7
Fannie Mae credit facilities (b)	567,169		568,086		5.12	%	3.8	22
Total fixed rate secured debt	978,440		969,296		5.28	%	2.8	29
Variable Rate Debt
Mortgage notes payable	31,337		31,337		1.94	%	1.8	1
Tax-exempt secured notes payable (c)	94,700		94,700		0.76	%	7.9	2
Fannie Mae credit facilities (b)	266,196		266,196		1.62	%	4.9	7
Total variable rate secured debt	392,233		392,233		1.44	%	5.4	10
Total Secured Debt	1,370,673		1,361,529		4.18	%	3.5	39
Unsecured Debt:
Commercial Banks
Borrowings outstanding under an unsecured credit facility due December 2017 (d) (f)	389,000		152,500		1.08	%	2.7
Senior Unsecured Notes
5.25% Medium-Term Notes due January 2015 (net of discounts of $0 and $6, respectively) (e)	—		325,169		—	%	—
5.25% Medium-Term Notes due January 2016	83,260		83,260		5.25	%	0.8
6.21% Medium-Term Notes due July 2016	12,865		—		6.21	%	1.3
4.25% Medium-Term Notes due June 2018 (net of discounts of $1,358 and $1,465, respectively) (f)	298,642		298,535		4.25	%	3.2
1.70% Term Notes due June 2018 (f)	215,000		215,000		1.70	%	3.2
1.53% Term Notes due June 2018 (f)	100,000		100,000		1.53	%	3.2
1.32% Term Notes due June 2018 (f)	35,000		35,000		1.32	%	3.2
3.70% Medium-Term Notes due October 2020 (net of discounts of $44 and $46, respectively) (f)	299,956		299,954		3.70	%	5.5
4.63% Medium-Term Notes due January 2022 (net of discounts of $2,433 and $2,523, respectively) (f)	397,567		397,477		4.63	%	6.8
3.75% Medium-Term Notes due July 2024 (net of discount of $964 and $990, respectively) (f)	299,036		299,010		3.75	%	9.3
8.50% Debentures due September 2024	15,644		15,644		8.50	%	9.5
Other	26		27		N/A		N/A
Total Unsecured Debt	2,145,996		2,221,576		3.26	%	4.9
Total Debt	$	3,516,669	$	3,583,105	3.62	%	4.4

Our secured debt instruments generally feature either monthly interest and principal or monthly interest-only payments with balloon payments due at maturity. For purposes of classification of the above table, variable rate debt with a derivative financial instrument designated as a cash flow hedge is deemed as fixed rate debt due to the Company having effectively established a fixed interest rate for the underlying debt instrument. Secured debt encumbers $2.3 billion or 26.7% of UDR’s total real estate owned based upon gross book value ($6.2 billion or 73.3% of UDR’s real estate owned based on gross book value is unencumbered) as of March 31, 2015.

(a) At March 31, 2015, fixed rate mortgage notes payable are generally due in monthly installments of principal and interest and mature at various dates from December 2015 through May 2019 and carry interest rates ranging from 3.43% to 6.16%.

The Company will from time to time acquire properties subject to fixed rate debt instruments. In those situations, the Company records the debt at its estimated fair value and amortizes any difference between the fair value and par to interest expense over the life of the underlying debt instrument. The Company had a reduction to interest expense based on the amortization of the fair market adjustment of debt assumed in the acquisition of properties of $1.1 million and $1.3 million during the three months endedMarch 31, 2015 and 2014, respectively. The unamortized fair market adjustment was a net premium of $7.0 million and $6.7 million at March 31, 2015 and December 31, 2014, respectively.

(b) UDR has three secured credit facilities with Fannie Mae with an aggregate commitment of $833.4 million at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $567.2 million of the outstanding balance was fixed and had a weighted average interest rate of 5.12% and the remaining balance of $266.2 million had a weighted average variable interest rate of 1.62%.

Further information related to these credit facilities is as follows (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	833,365		$	834,282
Weighted average borrowings during the period ended	833,697			835,873
Maximum daily borrowings during the period ended	834,003			837,564
Weighted average interest rate during the period ended	4.0		%	4.1		%
Weighted average interest rate at the end of the period	4.0		%	4.0		%

(c) The variable rate mortgage notes payable that secure tax-exempt housing bond issues mature in August 2019 and March 2032. Interest on these notes is payable in monthly installments. The variable rate mortgage notes have interest rates of 0.76% and 0.77% as of March 31, 2015.

(d) As of March 31, 2015, the Company has a $900 million unsecured revolving credit facility that matures in December 2017. The credit facility has a six month extension option and contains an accordion feature that allows us to increase the facility to $1.45 billion. Based on the Company’s current credit rating, the credit facility carries an interest rate equal to LIBOR plus a spread of 100 basis points and a facility fee of 15 basis points.

The following is a summary of short-term bank borrowings under UDR’s revolving credit facility at March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Total revolving credit facility	$	900,000		$	900,000
Borrowings outstanding at end of period (1)	389,000			152,500
Weighted average daily borrowings during the period ended	356,043			291,761
Maximum daily borrowings during the period ended	449,500			625,000
Weighted average interest rate during the period ended	1.2		%	1.2		%
Interest rate at end of the period	1.1		%	1.1		%

(1) Excludes $1.5 million and $1.9 million of letters of credit at March 31, 2015 and December 31, 2014, respectively.

(e) Paid off at maturity with borrowings under the Company's $900 million unsecured revolving credit facility.

(f) The Operating Partnership is a guarantor of this debt.

The aggregate maturities, including amortizing principal payments of unsecured and secured debt, of total debt for the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

Year	Total Fixed Secured Debt		Total Variable Secured Debt		Total Secured Debt		Total Unsecured Debt (a)		Total Debt
2015	$	194,779	$	—	$	194,779	$	114	$	194,893
2016	148,223		—		148,223		94,468		242,691
2017	177,882		96,337		274,219		389,000		663,219
2018	121,685		104,787		226,472		648,444		874,916
2019	245,871		67,700		313,571		—		313,571
Thereafter	90,000		123,409		213,409		1,013,970		1,227,379
Total	$	978,440	$	392,233	$	1,370,673	$	2,145,996	$	3,516,669

(a) With the exception of the 1.32% Term Notes due June 2018 and the revolving credit facility which carry a variable interest rate, all unsecured debt carries fixed interest rates.

We were in compliance with the covenants of our debt instruments at March 31, 2015.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

DEBT

DEBT

Our secured debt instruments generally feature either monthly interest and principal or monthly interest-only payments with balloon payments due at maturity. For purposes of classification in the following table, variable rate debt with a derivative financial instrument designated as a cash flow hedge is deemed as fixed rate debt due to the Operating Partnership having effectively established the fixed interest rate for the underlying debt instrument. Secured debt consists of the following as of March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Fixed Rate Debt
Mortgage notes payable	$	376,207	$	378,371	5.48	%	1.4	5
Fannie Mae credit facilities	333,735		333,828		4.90	%	4.3	10
Total fixed rate secured debt	709,942		712,199		5.21	%	2.8	15
Variable Rate Debt
Tax-exempt secured note payable	27,000		27,000		0.77	%	17.0	1
Fannie Mae credit facilities	192,760		192,760		1.85	%	5.7	5
Total variable rate secured debt	219,760		219,760		1.72	%	7.1	6
Total Secured Debt	$	929,702	$	931,959	4.38	%	3.8	21

As of March 31, 2015, an aggregate commitment of $526.5 million of the General Partner's secured credit facilities with Fannie Mae was allocated to the Operating Partnership based on the ownership of the assets securing the debt. The entire commitment was outstanding at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $333.7 million of the outstanding balance was fixed and had a weighted average interest rate of 4.90% and the remaining balance of $192.8 million on these facilities had a weighted average variable interest rate of 1.85%.

The following information relates to the credit facilities allocated to the Operating Partnership (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	526,495		$	526,588
Weighted average borrowings during the period ended	526,705			527,592
Maximum daily borrowings during the period	526,898			528,659
Weighted average interest rate during the period ended	4.0		%	4.1		%
Interest rate at the end of the period	4.0		%	4.0		%

The Operating Partnership may from time to time acquire properties subject to fixed rate debt instruments. In those situations, management will record the secured debt at its estimated fair value and amortize any difference between the fair value and par to interest expense over the life of the underlying debt instrument. The unamortized fair value adjustment of the fixed rate debt instruments on the Operating Partnership’s properties was a net premium of $5.2 million and $6.2 million at March 31, 2015 and December 31, 2014, respectively.

Fixed Rate Debt

Mortgage notes payable. Fixed rate mortgage notes payable are generally due in monthly installments of principal and interest and mature at various dates from December 2015 through May 2019 and carry interest rates ranging from 3.43% to 5.94%.

Secured credit facilities. At March 31, 2015, the General Partner had borrowings against its fixed rate facilities of $567.2 million, of which $333.7 million was allocated to the Operating Partnership based on the ownership of the assets securing the debt. As of March 31, 2015, the fixed rate Fannie Mae credit facilities allocated to the Operating Partnership had a weighted average fixed interest rate of 4.90%.

Variable Rate Debt

Tax-exempt secured note payable. The variable rate mortgage note payable that secures tax-exempt housing bond issues matures March 2032. Interest on this note is payable in monthly installments. The mortgage note payable has an interest rate of 0.77% as of March 31, 2015.

Secured credit facilities. At March 31, 2015, the General Partner had borrowings against its variable rate facilities of $266.2 million, of which $192.8 million was allocated to the Operating Partnership based on the ownership of the assets securing the debt. As of March 31, 2015, the variable rate borrowings under the Fannie Mae credit facilities allocated to the Operating Partnership had a weighted average floating interest rate of 1.85%.

The aggregate maturities of the Operating Partnership’s secured debt due during each of the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

	Fixed				Variable
Year	Mortgage Notes Payable		Secured Credit Facilities		Tax-Exempt Secured Notes Payable		Secured Credit Facilities		Total
2015	$	190,582	$	274	$	—	$	—	$	190,856
2016	131,021		385		—		—		131,406
2017	913		15,640		—		6,566		23,119
2018	968		111,052		—		96,974		208,994
2019	52,723		123,095		—		—		175,818
Thereafter	—		83,289		27,000		89,220		199,509
Total	$	376,207	$	333,735	$	27,000	$	192,760	$	929,702

Guarantor on Unsecured Debt

The Operating Partnership is a guarantor on the General Partner’s unsecured revolving credit facility with an aggregate borrowing capacity of $900 million, $250 million of term notes due June 2018, $100 million of term notes due June 2018, $300 million of medium-term notes due June 2018, $300 million of medium-term notes due October 2020, $400 million of medium-term notes due January 2022, and $300 million of medium-term notes due July 2024. As of March 31, 2015 and December 31, 2014, the outstanding balance under the unsecured revolving credit facility was $389.0 million and $152.5 million, respectively.

XML

Secured and Unsecured Debt (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Secured Debt, Encumbers Real Estate Owned, Amount	$ 2,300,000,000
Secured Debt, Encumbers Real Estate Owned, Percent	26.70%
Debt Instrument Weighted Average Years to Maturity	4 years 4 months 9 days
Unamortized discount	7,000,000	6,700,000
Aggregate maturities of secured debt
2014	194,893,000
2015	242,691,000
2016	663,219,000
2017	874,916,000
2018	313,571,000
Thereafter	1,227,379,000
Total	1,370,673,000	1,361,529,000
Secured Debt, Unencumbered Real Estate Owned, Amount	6,200,000,000
Secured Debt, Unencumbered Real Estate Owned, Percent	73.30%
Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	2 years 9 months 10 days
Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	5 years 4 months 24 days
ThreePointSevenTermNotesDueOctober2020 [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	5 years 6 months
2.68% Term Notes due December 2016 [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	3 years 2 months 4 days
Four Point Six Three Percent Term Medium Notes Due January Two Thousand Twenty-Two [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	6 years 9 months 10 days
Unamortized discount	2,433,000	2,523,000
Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	1 year 4 months 20 days
Mortgages Notes Payable [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	1 year 9 months 25 days
Tax Exempt Notes Payable [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	7 years 11 months 8 days
Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	3 years 9 months 10 days
Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	4 years 11 months 8 days
3.75 MTN Due July 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	9 years 3 months
Unamortized discount	964,000	990,000
Five Point Two Five Percent, Medium Term Notes, Due January 2015 [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	0 years
Unamortized discount	$ 0	$ 6,000

XML

Consolidated Statements of Operations (Unaudited) (UNITED DOMINION REALTY, L.P) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
OPERATING EXPENSES
Property operating and maintenance	$ 37,250,000	$ 36,720,000
Real estate taxes and insurance	26,222,000	25,431,000
Property management	5,694,000	5,345,000
Other operating expenses	1,766,000	1,926,000
Real estate depreciation and amortization	88,777,000	88,533,000
General and administrative	12,152,000	11,994,000
Casualty-related (recoveries)/charges, net	996,000	500,000
Total operating expenses	174,480,000	171,529,000
Operating income	45,273,000	26,510,000
Interest and other income/(expense), net	360,000	1,415,000
Income/(loss) from continuing operations	76,417,000	(5,195,000)
Income/(loss) from discontinued operations, net of tax	0	(87,000)
Gains/(loss) on sales of real estate owned	0	24,294,000
Net income/(loss)	76,417,000	19,012,000
Net (income)/loss attributable to noncontrolling interests	(2,371,000)	(707,000)
Net (income)/loss attributable to noncontrolling interests	(7,000)	(4,000)
Net income/(loss) attributable to OP unitholders	73,822,000	18,361,000
United Dominion Reality L.P. [Member]
REVENUES
Rental income	110,095,000	102,370,000
OPERATING EXPENSES
Property operating and maintenance	19,114,000	18,234,000
Real estate taxes and insurance	12,866,000	11,719,000
Property management	3,027,000	2,815,000
Other operating expenses	1,490,000	1,436,000
Real estate depreciation and amortization	44,478,000	44,271,000
General and administrative	5,639,000	6,970,000
Casualty-related (recoveries)/charges, net	593,000	500,000
Total operating expenses	87,207,000	85,945,000
Operating income	22,888,000	16,425,000
Interest expense	(9,620,000)	(8,863,000)
Interest expense on note payable due to General Partner	(1,151,000)	(1,151,000)
Income/(loss) before gain/(loss) of real estate owned	12,117,000	6,411,000
Gains/(loss) on sales of real estate owned	24,623,000	24,402,000
Net income/(loss)	36,740,000	30,813,000
Net (income)/loss attributable to noncontrolling interests	(394,000)	(280,000)
Net income/(loss) attributable to OP unitholders	$ 36,346,000	$ 30,533,000
Income/(loss) per OP unit- basic and diluted:
Net income/(loss) attributable to OP unitholders (in dollars per share)	$ 0.20	$ 0.17
Weighted average OP units outstanding - basic and diluted	183,279	183,279

XML

Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Real estate owned:
Real estate under development accumulated depreciation	$ 142	$ 0
Equity:
Preferred stock, par or stated value per share	$ 0	$ 0
Preferred stock, shares authorized	50,000,000	50,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	350,000,000	350,000,000
Common stock, shares issued		255,114,603
Common stock, shares outstanding	258,988,739
8.00% Series E Cumulative Convertible Preferred Stock
Equity:
Preferred stock, shares outstanding	2,803,812	2,803,812

XML

Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Company on January 1, 2017; early adoption is not permitted. The Company has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Company recognizes interest income, management and other fees and incentives when earned, and the amounts are fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we retain. The Company recognizes any deferred gain when the property is sold to a third party. In transactions accounted for by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Notes Receivable

The following table summarizes our notes receivable, net as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Interest rate at		Balance outstanding
	March 31, 2015		March 31, 2015		December 31, 2014
Note due February 2017 (a)	10.00	%	$	12,994	$	11,869
Note due July 2017 (b)	8.00	%	2,500		2,500
Total notes receivable, net			$	15,494	$	14,369

(a) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $13.0 million. During the three months ended March 31, 2015, the Company loaned an additional $1.1 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (February 2017).

(b) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $2.5 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (July 2017).

The Company recognized $0.4 million and $1.2 million of interest income from notes receivable during the three months endedMarch 31, 2015 and 2014, respectively, none of which was related party interest income. Interest income is included in Interest and other income/(expense), net on the Consolidated Statements of Operations.

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to stockholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Company’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges, (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) into earnings, and the allocation of other comprehensive income/(loss) to redeemable noncontrolling interests. The (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 10, Derivatives and Hedging Activity, for further discussion. The allocation of other comprehensive income/(loss) to redeemable noncontrolling interests was $(225,000) and $56,000 during the three months endedMarch 31, 2015 and 2014, respectively.

Income Taxes

Due to the structure of the Company as a REIT and the nature of the operations for the operating properties, no provision for federal income taxes has been provided for at UDR. Historically, the Company has generally incurred only state and local excise and franchise taxes. UDR has elected for certain consolidated subsidiaries to be treated as taxable REIT subsidiaries (“TRS”), primarily those engaged in development activities.

Income taxes for our TRS are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. The Company’s deferred tax assets are generally the result of differing depreciable lives on capitalized assets and timing of expense recognition for certain accrued liabilities. As of March 31, 2015, UDR’s net deferred tax asset was $7.6 million (net of a valuation allowance of less than $0.1 million), which is included in Other assets on the Consolidated Balance Sheets.

GAAP defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. GAAP also provides guidance on derecognition, classification, interest and penalties, accounting for interim periods, disclosure and transition.

The Company recognizes its tax positions and evaluates them using a two-step process. First, UDR determines whether a tax position is more likely than not (greater than 50 percent probability) to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Second, the Company will determine the amount of benefit to recognize and record the amount that is more likely than not to be realized upon ultimate settlement.

UDR had no material unrecognized tax benefit, accrued interest or penalties at March 31, 2015. UDR and its subsidiaries are subject to federal income tax as well as income tax of various state and local jurisdictions. The tax years 2010 through 2013 remain open to examination by tax jurisdictions to which we are subject. When applicable, UDR recognizes interest and/or penalties related to uncertain tax positions in Tax benefit/(expense), net on the Consolidated Statements of Operations.

XML

Stock Based Compensation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock Based Compensation (Textual) [Abstract]
Stock based compensation expense	$ 4.5	$ 3.7

XML

Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Offsetting Derivative Assets [Abstract]
Gross Amounts Offset in the Consolidated Balance Sheets	$ 0	$ 0
Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)	29	88
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	27
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	29	61
Offsetting Derivative Liabilities [Abstract]
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)	17,112	10,368
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	27
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	17,112	10,341
United Dominion Reality L.P. [Member]
Offsetting Derivative Assets [Abstract]
Derivative Asset Designated as Hedging Instrument, Fair Value	17	39
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)	17	39
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	17	39
Offsetting Derivative Liabilities [Abstract]
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)	686	918
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	$ 686	$ 918

XML

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 27, 2015
Entity Registrant Name	UDR, Inc.
Entity Central Index Key	0000074208
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		258,985,923
United Dominion Reality L.P. [Member]
Entity Registrant Name	United Dominion Realty L.P.
Entity Central Index Key	0001018254
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0

XML

Significant Accounting Policies (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Company on January 1, 2017; early adoption is not permitted. The Company has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Company recognizes interest income, management and other fees and incentives when earned, and the amounts are fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we retain. The Company recognizes any deferred gain when the property is sold to a third party. In transactions accounted for by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Notes Receivable

The following table summarizes our notes receivable, net as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Interest rate at		Balance outstanding
	March 31, 2015		March 31, 2015		December 31, 2014
Note due February 2017 (a)	10.00	%	$	12,994	$	11,869
Note due July 2017 (b)	8.00	%	2,500		2,500
Total notes receivable, net			$	15,494	$	14,369

(a) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $13.0 million. During the three months ended March 31, 2015, the Company loaned an additional $1.1 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (February 2017).

(b) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $2.5 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (July 2017).

The Company recognized $0.4 million and $1.2 million of interest income from notes receivable during the three months endedMarch 31, 2015 and 2014, respectively, none of which was related party interest income. Interest income is included in Interest and other income/(expense), net on the Consolidated Statements of Operations.

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to stockholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Company’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges, (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) into earnings, and the allocation of other comprehensive income/(loss) to redeemable noncontrolling interests. The (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 10, Derivatives and Hedging Activity, for further discussion. The allocation of other comprehensive income/(loss) to redeemable noncontrolling interests was $(225,000) and $56,000 during the three months endedMarch 31, 2015 and 2014, respectively.

Income Taxes

Due to the structure of the Company as a REIT and the nature of the operations for the operating properties, no provision for federal income taxes has been provided for at UDR. Historically, the Company has generally incurred only state and local excise and franchise taxes. UDR has elected for certain consolidated subsidiaries to be treated as taxable REIT subsidiaries (“TRS”), primarily those engaged in development activities.

Income taxes for our TRS are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. The Company’s deferred tax assets are generally the result of differing depreciable lives on capitalized assets and timing of expense recognition for certain accrued liabilities. As of March 31, 2015, UDR’s net deferred tax asset was $7.6 million (net of a valuation allowance of less than $0.1 million), which is included in Other assets on the Consolidated Balance Sheets.

GAAP defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. GAAP also provides guidance on derecognition, classification, interest and penalties, accounting for interim periods, disclosure and transition.

The Company recognizes its tax positions and evaluates them using a two-step process. First, UDR determines whether a tax position is more likely than not (greater than 50 percent probability) to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Second, the Company will determine the amount of benefit to recognize and record the amount that is more likely than not to be realized upon ultimate settlement.

UDR had no material unrecognized tax benefit, accrued interest or penalties at March 31, 2015. UDR and its subsidiaries are subject to federal income tax as well as income tax of various state and local jurisdictions. The tax years 2010 through 2013 remain open to examination by tax jurisdictions to which we are subject. When applicable, UDR recognizes interest and/or penalties related to uncertain tax positions in Tax benefit/(expense), net on the Consolidated Statements of Operations.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Operating Partnership on January 1, 2017; early adoption is not permitted. The Operating Partnership has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Income/(Loss) Per Operating Partnership Unit

Basic income/(loss) per OP Unit is computed by dividing net income/(loss) attributable to general and limited partner unitholders by the weighted average number of general and limited partner units outstanding during the year. Diluted income/(loss) per OP Unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units or resulted in the issuance of OP Units and then shared in the income/(loss) of the Operating Partnership.

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Operating Partnership recognizes interest income, fees and incentives when earned, fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we or our General Partner retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we or our General Partner retain. The Operating Partnership recognizes any deferred gain when the property is sold to a third party. In transactions accounted by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire property.

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to unitholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Operating Partnership’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges and (gain)/loss reclassified from other comprehensive income/(loss) into earnings. The (gain)/loss reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 7, Derivatives and Hedging Activity, for further discussion.

Income Taxes

The taxable income or loss of the Operating Partnership is reported on the tax returns of the partners. Accordingly, no provision has been made in the accompanying financial statements for federal or state income taxes on income that is passed through to the partners. However, any state or local revenue, excise or franchise taxes that result from the operating activities of the Operating Partnership are recorded at the entity level. The Operating Partnership’s tax returns are subject to examination by federal and state taxing authorities. Net income for financial reporting purposes differs from the net income for income tax reporting purposes primarily due to temporary differences, principally real estate depreciation and the tax deferral of certain gains on property sales. The differences in depreciation result from differences in the book and tax basis of certain real estate assets and the differences in the methods of depreciation and lives of the real estate assets.

The Operating Partnership evaluates the accounting and disclosure of tax positions taken or expected to be taken in the course of preparing the Operating Partnership’s tax returns to determine whether the tax positions are “more-likely-than-not” of being sustained by the applicable tax authority. Tax positions not deemed to meet the more-likely-than-not threshold would be recorded as a tax benefit or expense in the current year. Management of the Operating Partnership is required to analyze all open tax years, as defined by the statute of limitations, for all major jurisdictions, which include federal and certain states. The Operating Partnership has no examinations in progress and none are expected at this time.

Management of the Operating Partnership has reviewed all open tax years (2010 through 2013) of tax jurisdictions and concluded there is no tax liability resulting from unrecognized tax benefits relating to uncertain income tax positions taken or expected to be taken in future tax returns.

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Related Party Transactions (UNITED DOMINION REALTY, L.P.) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Related party management fees	$ 4,300,000	$ 3,100,000
United Dominion Reality L.P. [Member]
Related Party Transaction [Line Items]
Limited partnership units owned	183,167,815		183,167,815
Net receivable balances from General Partner	22,418,000		13,624,000
Related Party Transaction, Management Fee Percentage	2.75%
Interest Expense, Related Party	1,151,000	1,151,000
Notes payable due to General Partner	88,696,000		88,696,000
United Dominion Reality L.P. [Member] | Taxable REIT Subsidiaries [Member]
Related Party Transaction [Line Items]
Net receivable balances from General Partner	(22,418,000)		(13,624,000)
Related Party Transaction, Management Fee Percentage	2.75%
United Dominion Reality L.P. [Member] | UDR, Inc. [Member]
Related Party Transaction [Line Items]
General and administrative expenses allocated to the Operating Partnership by UDR	4,200,000	6,700,000
United Dominion Reality L.P. [Member] | UDR, Inc. [Member] | Bottom Dollar Guaranty [Member]
Related Party Transaction [Line Items]
Notes payable due to General Partner			$ 88,700,000
Note for 83.2 million [Member] | United Dominion Reality L.P. [Member] | UDR, Inc. [Member] | Guaranty Related To Community Acquisition [Member]
Related Party Transaction [Line Items]
Related party guaranty note payable interest rate	5.18%
Debt Instrument, Maturity Date Range, End	Aug. 31, 2021
Note for 5 million [Member] | United Dominion Reality L.P. [Member] | UDR, Inc. [Member] | Guaranty Related To Community Acquisition [Member]
Related Party Transaction [Line Items]
Related party guaranty note payable interest rate	5.34%
Debt Instrument, Maturity Date Range, End	Dec. 31, 2023

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Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 737,000	$ 1,532,000
Amount of Gain or (Loss) Recognized in Income on Derivative	(1,000)		0
Interest Rate Products [Member] | Other Income Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	0	0
Interest Rate Products [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(737,000)		(1,532,000)
United Dominion Reality L.P. [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	(51,000)	(51,000)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	286,000	623,000
Amount of Gain or (Loss) Recognized in Income on Derivative	0	0
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Other Income Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	(1,000)		0
United Dominion Reality L.P. [Member] | Interest Rate Products [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (286,000)		$ (623,000)

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Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Real estate owned:
Real estate held for investment	$ 8,256,995	$ 8,205,627
Less: accumulated depreciation	(2,521,958)	(2,434,772)
Real estate held for investment, net	5,735,037	5,770,855
Real estate under development (net of accumulated depreciation of $513 and $0, respectively)	196,511	177,632
Total real estate owned, net of accumulated depreciation	5,931,548	5,948,487
Cash and cash equivalents	6,274	15,224
Deferred financing costs, net	21,676	22,686
Other assets	96,713	105,202
Total assets	6,858,511	6,846,534
LIABILITIES AND CAPITAL
Secured debt	1,370,673	1,361,529
Real estate taxes payable	21,848	15,978
Accrued interest payable	23,460	34,215
Security deposits and prepaid rent	34,624	34,064
Distributions payable	75,129	69,460
Deferred gains on the sale of depreciable property	5,600	28,500
Accounts payable, accrued expenses, and other liabilities	63,857	91,282
Total liabilities	3,735,587	3,828,104
Partners' Capital:
Accumulated other comprehensive income/(loss), net	(15,445)	(8,855)
Total liabilities and equity	6,858,511	6,846,534
United Dominion Reality L.P. [Member]
Real estate owned:
Real estate held for investment	4,248,795	4,238,770
Less: accumulated depreciation	(1,447,513)	(1,403,303)
Total real estate owned, net of accumulated depreciation	2,801,282	2,835,467
Cash and cash equivalents	826	502
Restricted Cash	14,441	13,811
Deferred financing costs, net	4,118	4,475
Other assets	22,714	24,029
Total assets	2,843,381	2,878,284
LIABILITIES AND CAPITAL
Secured debt	929,702	931,959
Notes payable due to General Partner	88,696	88,696
Real estate taxes payable	10,101	7,061
Accrued interest payable	3,243	3,284
Security deposits and prepaid rent	17,916	18,387
Distributions payable	50,962	47,788
Deferred gains on the sale of depreciable property	0	24,622
Accounts payable, accrued expenses, and other liabilities	13,903	22,436
Total liabilities	1,114,523	1,144,233
Commitments and contingencies (Note 11)
Partners' Capital:
General partner: 110,883 OP Units outstanding at March 31, 2015 and December 31, 2014	1,096	1,105
Limited partners: 183,167,815 OP Units outstanding at March 31, 2015 and December 31, 2014	1,688,364	1,702,971
Accumulated other comprehensive income/(loss), net	(840)	(1,075)
Total partners' capital	1,688,620	1,703,001
Advances (to)/from General Partner	22,418	13,624
Noncontrolling interests	17,820	17,426
Total capital	1,728,858	1,734,051
Total liabilities and equity	$ 2,843,381	$ 2,878,284

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Consolidated Statements of Changes in Capital (UNITED DOMINION REALTY, L.P) (Unaudited) (United Dominion Reality L.P. [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Balance, December 31, 2014	$ 1,734,051
Advances (to)/from General Partner	(22,418)
Net income/(loss)	36,740
Distributions	50,962
OP Unit Redemptions for common shares of UDR	0
Adjustment to reflect limited partners' capital at redemption value	0
Unrealized Gain (Loss) on Derivatives	235
Net change in amount due to/(from) General Partner	8,794
Balance, March 31, 2015	1,728,858
Payable/(Receivable) due to/(from) General Partner [Member] [Member]
Net change in amount due to/(from) General Partner	8,794
Accumulated Other Comprehensive Income (Loss) [Member]
Balance, December 31, 2014	(1,075)
Unrealized Gain (Loss) on Derivatives	235
Balance, March 31, 2015	(840)
Total Partner's Capital [Member]
Balance, December 31, 2014	1,703,001
Net income/(loss)	36,346
Distributions	50,962
Adjustment to reflect limited partners' capital at redemption value	0
Balance, March 31, 2015	1,688,620
Noncontrolling Interest [Member]
Balance, December 31, 2014	17,426
Net income/(loss)	394
Balance, March 31, 2015	17,820
Partnership Capital [Member]
OP Unit Redemptions for common shares of UDR	0
Unrealized Gain (Loss) on Derivatives	235
Class A Limited Partner [Member]
Balance, December 31, 2014	53,987
Net income/(loss)	415
Distributions	(582)
Adjustment to reflect limited partners' capital at redemption value	5,789
Balance, March 31, 2015	59,609
Limited Partners [Member]
Balance, December 31, 2014	228,493
Net income/(loss)	1,467
Distributions	(2,057)
OP Unit Redemptions for common shares of UDR	(16)
Adjustment to reflect limited partners' capital at redemption value	24,387
Balance, March 31, 2015	252,274
Limited Partner [Member]
Balance, December 31, 2014	1,420,491
Net income/(loss)	34,442
Distributions	(48,292)
OP Unit Redemptions for common shares of UDR	16
Adjustment to reflect limited partners' capital at redemption value	(30,176)
Balance, March 31, 2015	1,376,481
General Partner [Member]
Balance, December 31, 2014	1,105
Net income/(loss)	22
Distributions	(31)
Balance, March 31, 2015	$ 1,096

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Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015
Common distributions declared per share	$ 0.2775
Series E Preferred Stock [Member]
Preferred stock distributions declared	$ 0.3322

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Secured and Unsecured Debt

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

SECURED AND UNSECURED DEBT

The following is a summary of our secured and unsecured debt at March 31, 2015 and December 31, 2014 (dollars in thousands):

					Three Months Ended
	Principal Outstanding				March 31, 2015
	March 31, 2015		December 31, 2014		Weighted Average Interest Rate		Weighted Average Years to Maturity	Number of Communities Encumbered
Secured Debt:
Fixed Rate Debt
Mortgage notes payable (a)	$	411,271	$	401,210	5.49	%	1.4	7
Fannie Mae credit facilities (b)	567,169		568,086		5.12	%	3.8	22
Total fixed rate secured debt	978,440		969,296		5.28	%	2.8	29
Variable Rate Debt
Mortgage notes payable	31,337		31,337		1.94	%	1.8	1
Tax-exempt secured notes payable (c)	94,700		94,700		0.76	%	7.9	2
Fannie Mae credit facilities (b)	266,196		266,196		1.62	%	4.9	7
Total variable rate secured debt	392,233		392,233		1.44	%	5.4	10
Total Secured Debt	1,370,673		1,361,529		4.18	%	3.5	39
Unsecured Debt:
Commercial Banks
Borrowings outstanding under an unsecured credit facility due December 2017 (d) (f)	389,000		152,500		1.08	%	2.7
Senior Unsecured Notes
5.25% Medium-Term Notes due January 2015 (net of discounts of $0 and $6, respectively) (e)	—		325,169		—	%	—
5.25% Medium-Term Notes due January 2016	83,260		83,260		5.25	%	0.8
6.21% Medium-Term Notes due July 2016	12,865		—		6.21	%	1.3
4.25% Medium-Term Notes due June 2018 (net of discounts of $1,358 and $1,465, respectively) (f)	298,642		298,535		4.25	%	3.2
1.70% Term Notes due June 2018 (f)	215,000		215,000		1.70	%	3.2
1.53% Term Notes due June 2018 (f)	100,000		100,000		1.53	%	3.2
1.32% Term Notes due June 2018 (f)	35,000		35,000		1.32	%	3.2
3.70% Medium-Term Notes due October 2020 (net of discounts of $44 and $46, respectively) (f)	299,956		299,954		3.70	%	5.5
4.63% Medium-Term Notes due January 2022 (net of discounts of $2,433 and $2,523, respectively) (f)	397,567		397,477		4.63	%	6.8
3.75% Medium-Term Notes due July 2024 (net of discount of $964 and $990, respectively) (f)	299,036		299,010		3.75	%	9.3
8.50% Debentures due September 2024	15,644		15,644		8.50	%	9.5
Other	26		27		N/A		N/A
Total Unsecured Debt	2,145,996		2,221,576		3.26	%	4.9
Total Debt	$	3,516,669	$	3,583,105	3.62	%	4.4

Our secured debt instruments generally feature either monthly interest and principal or monthly interest-only payments with balloon payments due at maturity. For purposes of classification of the above table, variable rate debt with a derivative financial instrument designated as a cash flow hedge is deemed as fixed rate debt due to the Company having effectively established a fixed interest rate for the underlying debt instrument. Secured debt encumbers $2.3 billion or 26.7% of UDR’s total real estate owned based upon gross book value ($6.2 billion or 73.3% of UDR’s real estate owned based on gross book value is unencumbered) as of March 31, 2015.

(a) At March 31, 2015, fixed rate mortgage notes payable are generally due in monthly installments of principal and interest and mature at various dates from December 2015 through May 2019 and carry interest rates ranging from 3.43% to 6.16%.

The Company will from time to time acquire properties subject to fixed rate debt instruments. In those situations, the Company records the debt at its estimated fair value and amortizes any difference between the fair value and par to interest expense over the life of the underlying debt instrument. The Company had a reduction to interest expense based on the amortization of the fair market adjustment of debt assumed in the acquisition of properties of $1.1 million and $1.3 million during the three months endedMarch 31, 2015 and 2014, respectively. The unamortized fair market adjustment was a net premium of $7.0 million and $6.7 million at March 31, 2015 and December 31, 2014, respectively.

(b) UDR has three secured credit facilities with Fannie Mae with an aggregate commitment of $833.4 million at March 31, 2015. The Fannie Mae credit facilities mature at various dates from May 2017 through July 2023 and bear interest at floating and fixed rates. At March 31, 2015, $567.2 million of the outstanding balance was fixed and had a weighted average interest rate of 5.12% and the remaining balance of $266.2 million had a weighted average variable interest rate of 1.62%.

Further information related to these credit facilities is as follows (dollars in thousands):

	March 31, 2015			December 31, 2014
Borrowings outstanding	$	833,365		$	834,282
Weighted average borrowings during the period ended	833,697			835,873
Maximum daily borrowings during the period ended	834,003			837,564
Weighted average interest rate during the period ended	4.0		%	4.1		%
Weighted average interest rate at the end of the period	4.0		%	4.0		%

(c) The variable rate mortgage notes payable that secure tax-exempt housing bond issues mature in August 2019 and March 2032. Interest on these notes is payable in monthly installments. The variable rate mortgage notes have interest rates of 0.76% and 0.77% as of March 31, 2015.

(d) As of March 31, 2015, the Company has a $900 million unsecured revolving credit facility that matures in December 2017. The credit facility has a six month extension option and contains an accordion feature that allows us to increase the facility to $1.45 billion. Based on the Company’s current credit rating, the credit facility carries an interest rate equal to LIBOR plus a spread of 100 basis points and a facility fee of 15 basis points.

The following is a summary of short-term bank borrowings under UDR’s revolving credit facility at March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Total revolving credit facility	$	900,000		$	900,000
Borrowings outstanding at end of period (1)	389,000			152,500
Weighted average daily borrowings during the period ended	356,043			291,761
Maximum daily borrowings during the period ended	449,500			625,000
Weighted average interest rate during the period ended	1.2		%	1.2		%
Interest rate at end of the period	1.1		%	1.1		%

(1) Excludes $1.5 million and $1.9 million of letters of credit at March 31, 2015 and December 31, 2014, respectively.

(e) Paid off at maturity with borrowings under the Company's $900 million unsecured revolving credit facility.

(f) The Operating Partnership is a guarantor of this debt.

The aggregate maturities, including amortizing principal payments of unsecured and secured debt, of total debt for the next five calendar years subsequent to March 31, 2015 are as follows (dollars in thousands):

Year	Total Fixed Secured Debt		Total Variable Secured Debt		Total Secured Debt		Total Unsecured Debt (a)		Total Debt
2015	$	194,779	$	—	$	194,779	$	114	$	194,893
2016	148,223		—		148,223		94,468		242,691
2017	177,882		96,337		274,219		389,000		663,219
2018	121,685		104,787		226,472		648,444		874,916
2019	245,871		67,700		313,571		—		313,571
Thereafter	90,000		123,409		213,409		1,013,970		1,227,379
Total	$	978,440	$	392,233	$	1,370,673	$	2,145,996	$	3,516,669

(a) With the exception of the 1.32% Term Notes due June 2018 and the revolving credit facility which carry a variable interest rate, all unsecured debt carries fixed interest rates.

We were in compliance with the covenants of our debt instruments at March 31, 2015.

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Real Estate Owned

3 Months Ended

Mar. 31, 2015

Real Estate [Abstract]

REAL ESTATE OWNED

REAL ESTATE OWNED

Real estate assets owned by the Company consist of income producing operating properties, properties under development, land held for future development, and sold or held for disposition properties. As of March 31, 2015, the Company owned and consolidated 138 communities in 10 states plus the District of Columbia totaling 39,956 apartment homes. The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land and land improvements	$	1,984,019		$	1,980,221
Depreciable property — held and used:
Building, improvements, and furniture, fixtures and equipment	6,272,976			6,225,406
Under development:
Land and land improvements	24,584			24,584
Building, improvements, and furniture, fixtures and equipment	172,069			153,048
Real estate owned	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Real estate owned, net	$	5,931,548		$	5,948,487

In February 2015, the Company acquired an office building in Highlands Ranch, Colorado, for total consideration of approximately $24.0 million, which was comprised of assumed debt. The Company's corporate offices, as well as other leased office space, are located in the acquired building. The building consists of approximately 120,000 square feet, of which UDR occupies approximately 44,000 square feet. All existing leases were assumed by the Company at the time of acquisition.

During the three months endedMarch 31, 2015, the Company did not sell or have any properties classified as held for sale.

Predevelopment, development, and redevelopment projects and related costs are capitalized and reported on the Consolidated Balance Sheets as Total real estate owned, net of accumulated depreciation. The Company capitalizes costs directly related to the predevelopment, development, and redevelopment of a capital project, which include, but are not limited to, interest, real estate taxes, insurance, and allocated development and redevelopment overhead related to support costs for personnel working on the capital projects. We use our professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. These costs, excluding the direct costs of development and redevelopment and capitalized interest, were $2.2 million and $3.4 million for the three months endedMarch 31, 2015 and 2014, respectively. Total interest capitalized was $4.8 million and $5.3 million for the three months endedMarch 31, 2015 and 2014, respectively. As each home in a capital project is completed and becomes available for lease-up, the Company ceases capitalization on the related portion and depreciation commences over the estimated useful life.

During the three months endedMarch 31, 2015, the Company recorded a loss of of $996,000 related to damage caused by severe snow storms to properties located on the east coast, which is included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.

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Derivatives and Hedging Activity (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Interest Rate Products [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Derivative Asset Designated as Hedging Instrument, Fair Value	$ 28	$ 86
Interest Rate Products [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Derivative Asset Not Designated as Hedging Instrument, Fair Value	1	2
Interest Rate Products [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Derivative Liability Designated as Hedging Instrument, Fair Value	17,112	10,368
Interest Rate Products [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Derivative Liability Not Designated as Hedging Instrument, Fair Value	0	0
Interest rate caps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Number of Interest Rate Derivatives Held	3
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Notional	243,079
Interest rate caps [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Number of Interest Rate Derivatives Held	1
Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet
Notional	$ 96,409

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Consolidation and Basis of Presentation

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

CONSOLIDATION AND BASIS OF PRESENTATION

CONSOLIDATION AND BASIS OF PRESENTATION

Consolidation and Basis of Presentation

UDR, Inc., collectively with our consolidated subsidiaries (“UDR,” the “Company,” “we,” “our,” or “us”), is a self-administered real estate investment trust, or REIT, that owns, operates, acquires, renovates, develops, redevelops, and manages apartment communities. The accompanying consolidated financial statements include the accounts of UDR and its subsidiaries, including United Dominion Realty, L.P. (the “Operating Partnership” or the “OP”). As of March 31, 2015, there were 183,278,698 units in the Operating Partnership outstanding, of which 174,113,759 units, or 95.0%, were owned by UDR and 9,164,939 units, or 5.0%, were owned by limited partners. The consolidated financial statements of UDR include the noncontrolling interests of the unitholders in the Operating Partnership.

The accompanying interim unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of our financial position as of March 31, 2015, and results of operations for the three months endedMarch 31, 2015 and 2014 have been included. Such adjustments are normal and recurring in nature. The interim results presented are not necessarily indicative of results that can be expected for a full year. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2014 appearing in UDR’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 24, 2015.

The accompanying interim unaudited consolidated financial statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the interim unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company evaluated subsequent events through the date its financial statements were issued. No significant recognized or non-recognized subsequent events were noted.

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Real Estate Owned (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015 Apartment_Homes Communities States	Mar. 31, 2014	Mar. 31, 2013
Real Estate Properties [Line Items]
Communities Held For Sale	1
Real Estate Owned (Textual) [Abstract]
Number of states in which there are owned and consolidated communities	10
Number of apartment homes owned and consolidated by the Company	39,956
Number of Real Estate Properties	138
Development costs excluding direct costs and capitlized interest	$ 2,200,000	$ 3,400,000
Interest capitalized during period	4,800,000	5,300,000
Other Cost and Expense, Operating	1,766,000	1,926,000
Payments for (Proceeds from) Investments	0	47,922,000
Gains/(loss) on sales of real estate, net of tax	0	24,294,000
Casualty-related (recoveries)/charges, net	(996,000)	(500,000)
Casualty (Recoveries)/Charges	(996,000)	(500,000)
Unconsolidated Joint Venture Four Texas [Member]
Real Estate Owned (Textual) [Abstract]
Proceeds from Sale of Property, Plant, and Equipment	43,500,000
Gain (Loss) on Disposition of Property Plant Equipment	59,100,000
1745 Shea [Member]
Real Estate Owned (Textual) [Abstract]
Square Footage	120,000
UDR, Inc. [Member]
Real Estate Owned (Textual) [Abstract]
Square Footage	44,000
United Dominion Reality L.P. [Member]
Real Estate Owned (Textual) [Abstract]
Number of states in which there are owned and consolidated communities	9
Number of apartment homes owned and consolidated by the Company	20,809
Number of Real Estate Properties	68
Development costs excluding direct costs and capitlized interest	133,000	1,000,000
Interest capitalized during period	0	800,000
Other Cost and Expense, Operating	1,490,000	1,436,000
Gains/(loss) on sales of real estate, net of tax	24,623,000	24,402,000
Casualty (Recoveries)/Charges	(593,000)	(500,000)	500,000
Operating Community [Member]
Real Estate Owned (Textual) [Abstract]
Gain (Loss) on Disposition of Property Plant Equipment	23,300,000
Operating Community [Member] | Unconsolidated Joint Venture Vitruvian Park [Member]
Real Estate Owned (Textual) [Abstract]
Number of Real Estate Properties	3
Operating Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Real Estate Owned (Textual) [Abstract]
Number of Real Estate Properties	8
Development Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Real Estate Owned (Textual) [Abstract]
Number of Real Estate Properties	0
Land [Member]
Real Estate Owned (Textual) [Abstract]
Gain (Loss) on Disposition of Property Plant Equipment	1,100,000
Office Building [Member] | 1745 Shea [Member]
Real Estate Owned (Textual) [Abstract]
Property, Plant and Equipment, Additions	$ 24,000,000

XML

Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net income/(loss)	$ 76,417	$ 19,012
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	90,400	89,613
Gain on sale of real estate owned, net of tax	0	(24,294)
Tax (benefit)/provision, net	(425)	(3,329)
Income/(loss) from unconsolidated entities	(59,159)	3,565
Fee Income from the Sale of Real Estate	(9,634)	0
Casualty-related (recoveries)/charges, net	996	500
Other	6,324	6,697
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	4,794	8,422
Increase/(decrease) in operating liabilities	(23,329)	(17,665)
Net cash provided by operating activities	96,018	82,521
Investing Activities
Acquisition of real estate assets	0	(77,793)
Proceeds from sales of real estate investments, net	0	47,922
Development of real estate assets	(43,563)	(56,147)
Capital expenditures and other major improvements - real estate assets, net of escrow reimbursement	(20,431)	(30,226)
Capital expenditures - non-real estate assets	(437)	(1,115)
Investment in unconsolidated joint ventures	(25,463)	(21,476)
Distributions received from unconsolidated joint venture	41,481	7,661
Purchase deposits on pending acquisitions	0	(4,000)
(Issuance)/repayment of notes receivable	(1,125)	(1,535)
Net cash provided by/(used in) investing activities	(49,538)	(136,709)
Financing Activities
Payments on secured debt	(2,266)	(2,486)
Proceeds from the issuance of secured debt	0	4,553
Payments on unsecured debt	(325,211)	(184,000)
Net proceeds/(repayment) of revolving bank debt	236,500	287,500
Proceeds from the issuance of common shares through public offering, net	108,790	0
Distributions paid to redeemable noncontrolling interests	(2,509)	(2,360)
Distributions paid to preferred stockholders	(931)	(931)
Distributions paid to common stockholders	(66,692)	(58,952)
Other	(3,111)	(3,494)
Net cash provided by/(used in) financing activities	(55,430)	39,830
Net increase/(decrease) in cash and cash equivalents	(8,950)	(14,358)
Cash and cash equivalents, beginning of period	15,224	30,249
Cash and cash equivalents, end of period	6,274	15,891
Supplemental Information:
Interest paid during the period, net of amounts capitalized	40,282	38,180
Non-cash transactions:
Acquisition of real estate	24,067	0
Fair value adjustment of debt acquired as part of acquisition of real estate	$ 1,363	$ 0

XML

Consolidated Statements of Cash Flows (UNITED DOMINION REALTY, L.P) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net income/(loss)	$ 76,417	$ 19,012
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	90,400	89,613
Gain/(loss) on sale of real estate owned	0	(24,294)
Casualty-related (recoveries)/charges, net	996	500
Other	6,324	6,697
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	4,794	8,422
Increase/(decrease) in operating liabilities	(23,329)	(17,665)
Net cash provided by operating activities	96,018	82,521
Investing Activities
Development of real estate assets	(43,563)	(56,147)
Capital expenditures and other major improvements - real estate assets, net of escrow reimbursement	(20,431)	(30,226)
Net cash provided by/(used in) investing activities	(49,538)	(136,709)
Financing Activities
Proceeds from the issuance of secured debt	0	4,553
Payments on secured debt	(2,266)	(2,486)
Net cash provided by/(used in) financing activities	(55,430)	39,830
Net increase/(decrease) in cash and cash equivalents	(8,950)	(14,358)
Cash and cash equivalents, beginning of period	15,224	30,249
Cash and cash equivalents, end of period	6,274	15,891
Supplemental Information:
Interest paid during the period, net of amounts capitalized	40,282	38,180
United Dominion Reality L.P. [Member]
Operating Activities
Net income/(loss)	36,740	30,813
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	44,478	44,271
Gain/(loss) on sale of real estate owned	(24,623)	(24,402)
Casualty-related (recoveries)/charges, net	593	500
Other	(108)	32
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	342	1,510
Increase/(decrease) in operating liabilities	100	(4,052)
Net cash provided by operating activities	57,522	48,672
Investing Activities
Proceeds from sale of real estate investments, net	0	47,922
Development of real estate assets	(7,141)	(9,860)
Capital expenditures and other major improvements - real estate assets, net of escrow reimbursement	(9,761)	(9,181)
Net cash provided by/(used in) investing activities	(16,902)	28,881
Financing Activities
Advances from/(to) General Partner, net	(36,485)	(74,963)
Payments on secured debt	(1,302)	(1,274)
Distributions paid to partnership unitholders	(2,509)	(2,360)
Net cash provided by/(used in) financing activities	(40,296)	(78,597)
Net increase/(decrease) in cash and cash equivalents	324	(1,044)
Cash and cash equivalents, beginning of period	502	1,897
Cash and cash equivalents, end of period	826	853
Supplemental Information:
Interest paid during the period, net of amounts capitalized	$ 11,471	$ 10,742

XML

Consolidation and Basis of Presentation (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

CONSOLIDATION AND BASIS OF PRESENTATION

CONSOLIDATION AND BASIS OF PRESENTATION

Consolidation and Basis of Presentation

UDR, Inc., collectively with our consolidated subsidiaries (“UDR,” the “Company,” “we,” “our,” or “us”), is a self-administered real estate investment trust, or REIT, that owns, operates, acquires, renovates, develops, redevelops, and manages apartment communities. The accompanying consolidated financial statements include the accounts of UDR and its subsidiaries, including United Dominion Realty, L.P. (the “Operating Partnership” or the “OP”). As of March 31, 2015, there were 183,278,698 units in the Operating Partnership outstanding, of which 174,113,759 units, or 95.0%, were owned by UDR and 9,164,939 units, or 5.0%, were owned by limited partners. The consolidated financial statements of UDR include the noncontrolling interests of the unitholders in the Operating Partnership.

The accompanying interim unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of our financial position as of March 31, 2015, and results of operations for the three months endedMarch 31, 2015 and 2014 have been included. Such adjustments are normal and recurring in nature. The interim results presented are not necessarily indicative of results that can be expected for a full year. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2014 appearing in UDR’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 24, 2015.

The accompanying interim unaudited consolidated financial statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the interim unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All significant intercompany accounts and transactions have been eliminated in consolidation.

The Company evaluated subsequent events through the date its financial statements were issued. No significant recognized or non-recognized subsequent events were noted.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

CONSOLIDATION AND BASIS OF PRESENTATION

CONSOLIDATION AND BASIS OF PRESENTATION

Consolidation and Basis of Presentation

United Dominion Realty, L.P. (“UDR, L.P.,” the “Operating Partnership,” “we” or “our”) is a Delaware limited partnership, that owns, acquires, renovates, redevelops, manages, and disposes of multifamily apartment communities generally located in high barrier to entry markets located in the United States. The high barrier to entry markets are characterized by limited land for new construction, difficult and lengthy entitlement process, expensive single-family home prices and significant employment growth potential. UDR, L.P. is a subsidiary of UDR, Inc. (“UDR” or the “General Partner”), a self-administered real estate investment trust, or REIT, through which UDR conducts a significant portion of its business. During the three months endedMarch 31, 2015 and 2014, rental revenues of the Operating Partnership represented 53% of the General Partner’s consolidated rental revenues. As of March 31, 2015, the Operating Partnership’s apartment portfolio consisted of 68 communities located in 17 markets consisting of 20,809 apartment homes.

Interests in UDR, L.P. are represented by operating partnership units (“OP Units”). The Operating Partnership’s net income is allocated to the partners, which is initially based on their respective distributions made during the year and secondly, their percentage interests. Distributions are made in accordance with the terms of the Amended and Restated Agreement of Limited Partnership of United Dominion Realty, L.P. (the “Operating Partnership Agreement”), on a per unit basis that is generally equal to the dividend per share on UDR’s common stock, which is publicly traded on the New York Stock Exchange (“NYSE”) under the ticker symbol “UDR.”

As of March 31, 2015, there were 183,278,698 OP Units outstanding, of which 174,113,759 or 95.0% were owned by UDR and affiliated entities and 9,164,939 or 5.0% were owned by non-affiliated limited partners. See Note 8, Capital Structure.

The accompanying interim unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of our financial position as of March 31, 2015, and results of operations for the three months endedMarch 31, 2015 and 2014 have been included. Such adjustments are normal and recurring in nature. The interim results presented are not necessarily indicative of results that can be expected for a full year. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended March 31, 2015 included in the Annual Report on Form 10-K filed by UDR and the Operating Partnership with the SEC on February 24, 2015.

The accompanying interim unaudited consolidated statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the interim unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All intercompany accounts and transactions have been eliminated in consolidation.

The Operating Partnership evaluated subsequent events through the date its financial statements were issued. No recognized or non-recognized subsequent events were noted.

XML

Joint Ventures (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Financial information relating to unconsolidated joint ventures operations
UDR income/(loss) from unconsolidated entities	$ 59,159,000	$ (3,565,000)
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	763,540,000			718,226,000
Deferred gains on the sale of depreciable property	5,600,000			28,500,000
Number of Real Estate Properties	138
Unconsolidated Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Summarized Financial Information Income/(loss) from discontinued operations	182,488,000	(29,997,000)
Financial information relating to unconsolidated joint ventures operations
Total revenues	54,546,000		38,955,000
Equity Method Investment Summarized Financial Information Property Operating Expense	(20,168,000)	(14,360,000)
Real estate depreciation and amortization	(19,351,000)		(14,688,000)
Net income /(loss)	181,454,000		(32,241,000)
Combined summary of balance sheets relating to unconsolidated joint ventures
Total real estate, net	2,970,102,000			2,941,803,000
Equity Method of Investment Summarized Financial Information, Assets Sold or Held For Sale	0			216,196,000
Equity Method Investment Summarized Financial Information Cash and cash equivalents	29,544,000			32,544,000
Equity Method Investment Summarized Financial Information Other assets	31,162,000			28,707,000
Total assets	3,030,808,000			3,219,250,000
Amount due to UDR	4,691,000			2,997,000
Third party debt	1,514,886,000			1,504,477,000
Equity Method of Investment Summarized Financial Information, Liabilities Sold or Held For Sale	0			229,706,000
Equity Method Investment Summarized Financial Information Accounts payable and accrued liabilities	52,146,000			44,335,000
Total liabilities	1,571,723,000			1,781,515,000
Total equity	1,459,085,000			1,437,735,000
Equity Method Investment, Summarized Financial Information, Liabilities and Equity	3,030,808,000			3,219,250,000
Investment in and advances to unconsolidated joint ventures, net	687,893,000			655,519,000
Equity Method of Investment Summarized Financial Information Operating income/(loss)	15,027,000	9,907,000
Equity Method Investment Summarized Financial Information Interest expense	(16,061,000)	(12,151,000)
Unconsolidated Joint Venture Four Texas [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Deferred gains on the sale of depreciable property	24,200,000
Operating Community [Member] | Unconsolidated Joint Venture UDR Met Life I Partnership [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	13,473,000			13,306,000
Equity Method Investment, Ownership Percentage	15.70%			15.70%
Number of apartment homes	0
Number of Real Estate Properties	4
Operating Community [Member] | Unconsolidated Joint Venture UDR MetLife II Partnership [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	429,635,000			431,277,000
Equity Method Investment, Ownership Percentage	50.00%			50.00%
Number of apartment homes	4,642
Number of Real Estate Properties	21
Operating Community [Member] | Unconsolidated Joint Venture Vitruvian Park [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	78,669,000			80,302,000
Equity Method Investment, Ownership Percentage	50.00%			50.00%
Number of apartment homes	1,130
Number of Real Estate Properties	3
Operating Community [Member] | Unconsolidated Joint Venture Three [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	20,435,000			21,596,000
Equity Method Investment, Ownership Percentage	30.00%			30.00%
Number of apartment homes	660
Number of Real Estate Properties	3
Operating Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Equity Method Investment, Ownership Percentage	0.00%			20.00%
Number of Real Estate Properties	8
Operating Community [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	145,681,000			134,939,000
Equity Method Investment, Ownership Percentage	50.60%			50.60%
Number of apartment homes	1,437
Number of Real Estate Properties	1
Land Parcel [Member] | Unconsolidated Joint Venture Vitruvian Park [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Number of Real Estate Properties	6
Development Community [Member] | Unconsolidated Joint Venture Four Texas [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	0			(25,901,000)
Number of apartment homes	0
Number of Real Estate Properties	0
Development Community [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Number of Real Estate Properties	4
Development Community [Member] | Participating Loan Investment Steele Creek Denver Colorado [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Investment in and advances to unconsolidated joint ventures, net	75,647,000			62,707,000
Income from Participating Loan	$ 1,154	$ 321,000
Participating Loan, Interest Rate, Stated Percentage	6.50%
Participating Loan Years to Maturity	2 years 3 months 18 days
Land [Member] | Unconsolidated Joint Venture Other MetLife [Member]
Combined summary of balance sheets relating to unconsolidated joint ventures
Number of Real Estate Properties	1

XML

Derivatives and Hedging Activity (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Effect of derivative instruments on the Consolidated Statements of Operations
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 737,000	$ 1,532,000
Unrealized holding gain/(loss)	(7,552,000)	(55,000)
Amount of Gain or (Loss) Recognized in Income on Derivative	(1,000)		0
Interest Rate Products [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Effect of derivative instruments on the Consolidated Statements of Operations
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(737,000)		(1,532,000)
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ 0		$ 0

XML

Secured and Unsecured Debt (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Secured debt instruments
Weighted average interest rate	3.62%
Long-term Debt	$ 3,516,669	$ 3,583,105
Unsecured Debt	2,145,996	2,221,576
Weighted Average Years to Maturity	4 years 4 months 9 days
Line of Credit Facility, Amount Outstanding	1,500	1,900
Fixed Rate Debt [Member]
Secured debt instruments
Principal outstanding	978,440	969,296
Weighted average interest rate	5.28%
Weighted Average Years to Maturity	2 years 9 months 10 days
Number of Communities Encumbered	29
Variable Rate Debt [Member]
Secured debt instruments
Principal outstanding	392,233	392,233
Weighted average interest rate	1.44126%
Weighted Average Years to Maturity	5 years 4 months 24 days
Number of Communities Encumbered	10
Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Secured debt instruments
Weighted average interest rate	5.49%
Weighted Average Years to Maturity	1 year 4 months 20 days
Number of Communities Encumbered	7
Mortgages Notes Payable [Member] | Variable Rate Debt [Member]
Secured debt instruments
Weighted average interest rate	1.94%
Weighted Average Years to Maturity	1 year 9 months 25 days
Number of Communities Encumbered	1
Tax-exempt secured notes payable [Member] | Variable Rate Debt [Member]
Secured debt instruments
Weighted average interest rate	0.76%
Weighted Average Years to Maturity	7 years 11 months 8 days
Number of Communities Encumbered	2
Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Secured debt instruments
Debt, Weighted Average Interest Rate	5.12%
Weighted Average Years to Maturity	3 years 9 months 10 days
Number of Communities Encumbered	22
Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Secured debt instruments
Debt Instrument, Interest Rate at Period End	1.62%
Weighted Average Years to Maturity	4 years 11 months 8 days
Number of Communities Encumbered	7
Secured Debt [Member]
Secured debt instruments
Principal outstanding	1,370,673	1,361,529
Weighted average interest rate	4.18%
Long-term Debt	1,370,673
Weighted Average Years to Maturity	3 years 6 months 10 days
Number of Communities Encumbered	39
Secured Debt [Member] | Fixed Rate Debt [Member]
Secured debt instruments
Long-term Debt	978,440
Secured Debt [Member] | Variable Rate Debt [Member]
Secured debt instruments
Long-term Debt	392,233
Unsecured Revolving Credit Facility due October 2015 [Member]
Secured debt instruments
Weighted average interest rate	1.08%
Weighted Average Years to Maturity	2 years 8 months 4 days
Line of Credit Facility, Amount Outstanding	389,000	152,500
ThreePointSevenTermNotesDueOctober2020 [Member]
Secured debt instruments
Weighted average interest rate	3.70%
Senior Notes	299,956	299,954
Weighted Average Years to Maturity	5 years 6 months
Four Point Six Three Percent Term Medium Notes Due January Two Thousand Twenty-Two [Member]
Secured debt instruments
Weighted average interest rate	4.63%
Senior Notes	397,567	397,477
Weighted Average Years to Maturity	6 years 9 months 10 days
3.75 MTN Due July 2024 [Member]
Secured debt instruments
Weighted average interest rate	3.75%
Senior Notes	299,036	299,010
Weighted Average Years to Maturity	9 years 3 months
1.67% Term Notes due December 2016 [Member]
Secured debt instruments
Weighted average interest rate	1.32%
Senior Notes	35,000	35,000
Weighted Average Years to Maturity	3 years 2 months 4 days
2.68% Term Notes due December 2016 [Member]
Secured debt instruments
Weighted average interest rate	1.53%
Senior Notes	100,000	100,000
Weighted Average Years to Maturity	3 years 2 months 4 days
Five Point Two Five Percent, Medium Term Notes, Due January 2015 [Member]
Secured debt instruments
Weighted average interest rate	0.00%
Senior Notes	0	325,169
Weighted Average Years to Maturity	0 years
Five Point Two Five Percent, Medium Term Notes, Due January 2016 [Member]
Secured debt instruments
Weighted average interest rate	5.25%
Senior Notes	83,260	83,260
Weighted Average Years to Maturity	9 months 14 days
6.21 Medium Term Note, Due January 2016 [Member]
Secured debt instruments
Weighted average interest rate	6.21%
Senior Notes	12,865	0
Weighted Average Years to Maturity	1 year 3 months 3 days
2.90% Term Notes due January 2016 [Member]
Secured debt instruments
Weighted average interest rate	1.70%
Senior Notes	215,000	215,000
Weighted Average Years to Maturity	3 years 2 months 4 days
Eight Point Five Zero Percent, Debentures, Due September 2024 [Member]
Secured debt instruments
Weighted average interest rate	8.50%
Senior Notes	15,644	15,644
Weighted Average Years to Maturity	9 years 5 months 15 days
Four Point Two Five Percentage Medium-Term Notes due June 2018 [Member]
Secured debt instruments
Weighted average interest rate	4.25%
Senior Notes	298,642	298,535
Weighted Average Years to Maturity	3 years 2 months 1 day
Other [Member]
Secured debt instruments
Senior Notes	26	27
Unsecured Debt [Member]
Secured debt instruments
Weighted average interest rate	3.26%
Long-term Debt	2,145,996
Unsecured Debt	2,145,996	2,221,576
Weighted Average Years to Maturity	4 years 10 months 17 days
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Mortgages Notes Payable [Member] | Fixed Rate Debt [Member]
Secured debt instruments
Principal outstanding	411,271	401,210
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Mortgages Notes Payable [Member] | Variable Rate Debt [Member]
Secured debt instruments
Principal outstanding	31,337	31,337
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Line of Credit [Member] | Fannie Mae credit facilities [Member] | Fixed Rate Debt [Member]
Secured debt instruments
Principal outstanding	567,169	568,086
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Line of Credit [Member] | Fannie Mae credit facilities [Member] | Variable Rate Debt [Member]
Secured debt instruments
Principal outstanding	$ 266,196	$ 266,196

XML

Discontinued Operations (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disposal Group, Including Discontinued Operation, Interest Expense	$ 0	$ 1,000
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	0	9,000
Discontinued Operations (Textual) [Abstract]
Communities held for sale (in communities)	1
Summary of income from discontinued operations
Rental expenses	0	48,000
Real estate depreciation	0	125,000
Income/(loss) from discontinued operations, net of tax	0	(87,000)
Income/(loss) from discontinued operations attributable to common stockholders	0	(84,000)
Operating Community [Member]
Gain (Loss) on Disposition of Property Plant Equipment	23,300,000
Land [Member]
Gain (Loss) on Disposition of Property Plant Equipment	$ 1,100,000

XML

Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Entity Information [Line Items]
Cash flow hedge ineffectiveness in earnings materiality	0	0
Estimated additional accumulated other comprehensive Income/(Loss) transferred to interest expense	$ 6,300,000
Losses in the fair value of derivatives not designated in hedging relationships	1,000		0
Payment required to pay for contract termination	17,500,000
Derivative, Collateral, Obligation to Return Cash	0			0
United Dominion Reality L.P. [Member]
Entity Information [Line Items]
Cash flow hedge ineffectiveness in earnings materiality	0	0
Estimated additional accumulated other comprehensive Income/(Loss) transferred to interest expense	691,000
Losses in the fair value of derivatives not designated in hedging relationships	0	0
Fair value of derivatives in a net liability position	774,000
Derivative, Collateral, Obligation to Return Cash	$ 0			$ 0

XML

Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Commitments

Real Estate Under Development

The following summarizes the Company’s real estate commitments at March 31, 2015 (dollars in thousands):

	Number of Properties	Costs Incurred to Date (a)			Expected Costs to Complete			Average Ownership Stake
Wholly-owned — under development	1	$	196,653	(b)	$	21,047		100	%
Wholly-owned — redevelopment	2	90,382		(b)	22,618			100	%
Joint ventures:
Unconsolidated joint ventures	4	285,730			189,037		(c)	Various
Participating loan investments	1	75,647		(d)	16,362		(e)	0	%
		$	648,412		$	249,064

(a) Represents 100% of project costs incurred to date.

(b) Costs incurred to date include $11.1 million and $2.3 million of accruedfixed assets for development and redevelopment, respectively.

(c) Represents UDR’s proportionate share of expected remaining costs to complete.

(d) Represents the participating loan balance funded as of March 31, 2015.

(e) Represents UDR’s remaining participating loan commitment for Steele Creek.

Contingencies

Litigation and Legal Matters

The Company is subject to various legal proceedings and claims arising in the ordinary course of business. The Company cannot determine the ultimate liability with respect to such legal proceedings and claims at this time. The Company believes that such liability, to the extent not provided for through insurance or otherwise, will not have a material adverse effect on our financial condition, results of operations or cash flow.

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Derivatives and Hedging Activity (Tables)

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Outstanding interest rate derivatives

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (dollars in thousands):

Interest Rate Derivative	Number of Instruments	Notional
Interest rate swaps	9	$	565,000
Interest rate caps	3	$	243,079

Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of GAAP. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings and resulted in no adjustment to earnings for the three months endedMarch 31, 2015 and 2014.

As of March 31, 2015, the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships (dollars in thousands):

Product	Number of Instruments	Notional
Interest rate caps	1	$	96,409

Fair value of Company's derivative financial instruments and their classification on Consolidated Balance Sheet

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Asset Derivatives (included in Other assets)				Liability Derivatives (included in Other liabilities)
	Fair Value at:				Fair Value at:
	March 31, 2015		December 31, 2014		March 31, 2015		December 31, 2014
Derivatives designated as hedging instruments:
Interest rate products	$	28	86		$	17,112	$	10,368
Derivatives not designated as hedging instruments:
Interest rate products	$	1	$	2	$	—	$	—

Effect of Company's derivative financial instruments on Consolidated Statements of Operation

The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Operations for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

Derivatives in Cash Flow Hedging Relationships	Unrealized holding gain/(loss) Recognized in OCI (Effective Portion)						Gain/(Loss) Reclassified from Accumulated OCI into Interest expense (Effective Portion)						Gain/(Loss) Recognized in Interest expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)
	2015			2014			2015			2014			2015		2014
Three Months Ended March 31,
Interest rate products	$	(7,552	)	$	(55	)	$	(737	)	$	(1,532	)	$	—	$	—

Effect of Company's derivatives not designated as hedging instruments on the Consolidated Statements of Operations

	Gain/(Loss) Recognized in Interest and other income/(expense), net
Derivatives Not Designated as Hedging Instruments	2015			2014
Three Months Ended March 31,
Interest rate products	$	(1	)	$	—

Offsetting Assets [Table Text Block]

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets (a)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Received		Net Amount
March 31, 2015	$	29	$	—	$	29	$	—		$	—	$	29
December 31, 2014	$	88	$	—	$	88	$	(27	)	$	—	$	61

(a) Amounts reconcile to the aggregate fair value of derivative assets in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

Offsetting Liabilities [Table Text Block]

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets (b)		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Financial Instruments			Cash Collateral Posted		Net Amount
March 31, 2015	$	17,112	$	—	$	17,112	$	—		$	—	$	17,112
December 31, 2014	$	10,368	$	—	$	10,368	$	(27	)	$	—	$	10,341

(b) Amounts reconcile to the aggregate fair value of derivative liabilities in the “Tabular Disclosure of Fair Values of Derivative Instruments on the Balance Sheet” located in this footnote.

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Discontinued Operations

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS

Effective January 1, 2014, UDR prospectively adopted ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, for all communities not previously sold or classified as held for sale. The standard had a material impact on the Company’s consolidated financial statements. As a result of adopting the ASU, during the three months endedMarch 31, 2014, gains (net of tax) of $23.3 million from disposition of real estate, excluding a $1.1 million gain related to the sale of land, are included in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations rather than in Income/(loss) from discontinued operations, net of tax on the Consolidated Statements of Operations.

As of March 31, 2014, the Company held one operating property that was classified as held for disposition prior to the adoption of ASU 2014-08 and, therefore, met the requirements to be reported as a discontinued operation. The operating results of the property for the three months endedMarch 31, 2014 are included in Income/(loss) from discontinued operations, net of tax on the Consolidated Statements of Operations. The property was subsequently sold during the third quarter of 2014.

The following is a summary of income/(loss) from discontinued operations, net of tax for the three months endedMarch 31, 2015 and 2014 (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Rental income	$	—	$	48
Rental expenses	—		125
Property management	—		1
Interest and other (income)/expense, net	—		9
Income/(loss) from discontinued operations, net of tax	$	—	$	(87	)
Income/(loss) from discontinued operations attributable to UDR, Inc.	$	—	$	(84	)

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Noncontrolling Interests

3 Months Ended

Mar. 31, 2015

Noncontrolling Interest [Abstract]

NONCONTROLLING INTERESTS

NONCONTROLLING INTERESTS

Redeemable Noncontrolling Interests in the Operating Partnership

Interests in the Operating Partnership held by limited partners are represented by OP Units. The income is allocated to holders of OP Units based upon net income attributable to common stockholders and the weighted average number of OP Units outstanding to total common shares plus OP Units outstanding during the period. Capital contributions, distributions, and profits and losses are allocated to noncontrolling interests in accordance with the terms of the individual partnership agreements.

Limited partners have the right to require the Operating Partnership to redeem all or a portion of the OP Units held by the limited partners at a redemption price equal to and in the form of the Cash Amount as defined in the Amended and Restated Agreement of Limited Partnership of the Operating Partnership (the “Operating Partnership Agreement”), provided that such OP Units have been outstanding for at least one year. UDR, as the general partner of the Operating Partnership may, in its sole discretion, purchase the OP Units by paying to the limited partner either the Cash Amount or the REIT Share Amount (generally one share of common stock of the Company for each OP Unit), as defined in the Operating Partnership Agreement. Accordingly, the Company records the OP Units outside of permanent equity and reports the OP Units at their redemption value using the Company’s stock price at each balance sheet date.

The following table sets forth redeemable noncontrolling interests in the Operating Partnership for the following period (dollars in thousands):

Redeemable noncontrolling interests in the Operating Partnership, December 31, 2014	$	282,480
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership	29,696
Conversion of OP Units to Common Stock	(17		)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership	2,588
Distributions to redeemable noncontrolling interests in the Operating Partnership	(2,639		)
Allocation of other comprehensive income/(loss)	(225		)
Redeemable noncontrolling interests in the Operating Partnership, March 31, 2015	$	311,883

The following sets forth net income/(loss) attributable to common stockholders and transfers from redeemable noncontrolling interests in the Operating Partnership for the following periods (dollars in thousands):

	Three Months Ended
	March 31,
	2015		2014
Net income/(loss) attributable to common stockholders	$	72,891	$	17,430
Conversion of OP Units to UDR Common stock	17		—
Change in equity from net income/(loss) attributable to common stockholders and conversion of OP Units to UDR Common Stock	$	72,908	$	17,430

Noncontrolling Interests

Noncontrolling interests represent interests of unrelated partners in certain consolidated affiliates, and are presented as part of equity in the Consolidated Balance Sheets since these interests are not redeemable. Net (income)/loss attributable to noncontrolling interests was $(7,000) and $(4,000) during the three months endedMarch 31, 2015 and 2014, respectively

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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Real Estate Properties [Line Items]
Number of communities owned (in communities)	138
Costs Incurred to Date	$ 648,412
Expected Costs to Complete	249,064
Wholly owned — under development [Member]
Real Estate Properties [Line Items]
Capital Expenditures Incurred but Not yet Paid	11,100
Number of communities owned (in communities)	1
Costs Incurred to Date	196,653
Expected Costs to Complete	21,047
Average Ownership Stake	100.00%
Wholly owned — redevelopment [Member]
Real Estate Properties [Line Items]
Capital Expenditures Incurred but Not yet Paid	2,300
Number of communities owned (in communities)	2
Costs Incurred to Date	90,382
Expected Costs to Complete	22,618
Average Ownership Stake	100.00%
Unconsolidated joint ventures [Member]
Real Estate Properties [Line Items]
Number of communities owned (in communities)	4
Costs Incurred to Date	285,730
Expected Costs to Complete	189,037
Participating Loan Investment Steele Creek Denver Colorado [Member]
Real Estate Properties [Line Items]
Costs Incurred to Date	75,647
Expected Costs to Complete	$ 16,362
Average Ownership Stake	0.00%

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Fair Value of Derivatives and Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Estimated fair values

The estimated fair values of the Company’s financial instruments either recorded or disclosed on a recurring basis as of March 31, 2015 and December 31, 2014 are summarized as follows (dollars in thousands):

					Fair Value at March 31, 2015, Using
	Total Carrying Amount in Statement of Financial Position at March 31, 2015		Fair Value Estimate at March 31, 2015		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	15,494	$	15,923	$	—	$	—	$	15,923
Derivatives - Interest rate contracts (b)	29		29		—		29		—
Total assets	$	15,523	$	15,952	$	—	$	29	$	15,923
Derivatives - Interest rate contracts (b)	$	17,112	$	17,112	$	—	$	17,112	$	—
Secured debt instruments - fixed rate: (c)
Mortgage notes payable	411,271		425,969		—		—		425,969
Fannie Mae credit facilities	567,169		599,580		—		—		599,580
Secured debt instruments - variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	389,000		389,000		—		—		389,000
Senior unsecured notes	1,756,996		1,852,361		—		—		1,852,361
Total liabilities	$	3,533,781	$	3,676,255	$	—	$	17,112	$	3,659,143
Redeemable noncontrolling interests in the Operating Partnership (d)	$	311,883	$	311,883	$	—	$	311,883	$	—

					Fair Value at December 31, 2014, Using
	Total Carrying Amount in Statement of Financial Position at December 31, 2014		Fair Value Estimate at December 31, 2014		Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description:
Notes receivable (a)	$	14,369	$	14,808	$	—	$	—	$	14,808
Derivatives- Interest rate contracts (b)	88		88		—		88		—
Total assets	$	14,457	$	14,896	$	—	$	88	$	14,808
Derivatives- Interest rate contracts (b)	$	10,368	$	10,368	$	—	$	10,368	$	—
Secured debt instruments- fixed rate: (c)
Mortgage notes payable	401,210		415,663		—		—		415,663
Fannie Mae credit facilities	568,086		606,623		—		—		606,623
Secured debt instruments- variable rate: (c)
Mortgage notes payable	31,337		31,337		—		—		31,337
Tax-exempt secured notes payable	94,700		94,700		—		—		94,700
Fannie Mae credit facilities	266,196		266,196		—		—		266,196
Unsecured debt instruments: (c)
Commercial bank	152,500		152,500		—		—		152,500
Senior unsecured notes	2,069,076		2,144,125		—		—		2,144,125
Total liabilities	$	3,593,473	$	3,721,512	$	—	$	10,368	$	3,711,144
Redeemable noncontrolling interests in the Operating Partnership (d)	$	282,480	$	282,480	$	—	$	282,480	$	—

(a) See Note 2, Significant Accounting Policies.

(b) See Note 10, Derivatives and Hedging Activity.

(c) See Note 6, Secured and Unsecured Debt.

(d) See Note 8, Noncontrolling Interests.

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Real Estate Owned (Tables)

3 Months Ended

Mar. 31, 2015

Real Estate [Abstract]

Summary of carrying amounts for real estate owned (at cost)

The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land and land improvements	$	1,984,019		$	1,980,221
Depreciable property — held and used:
Building, improvements, and furniture, fixtures and equipment	6,272,976			6,225,406
Under development:
Land and land improvements	24,584			24,584
Building, improvements, and furniture, fixtures and equipment	172,069			153,048
Real estate owned	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Real estate owned, net	$	5,931,548		$	5,948,487

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Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Real estate under development accumulated depreciation	$ 142	$ 0
United Dominion Reality L.P. [Member]
Real estate under development accumulated depreciation	$ 0	$ 0
Partners' Capital:
OP units outstanding related to general partner	110,883	110,883
OP units outstanding related to limited partner	183,167,815	183,167,815

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Derivatives and Hedging Activity (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivative [Line Items]
Number instruments	9
Notional	$ 565,000
Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	3
Notional	243,079
Not Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	1
Notional	96,409
United Dominion Reality L.P. [Member] | Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivative [Line Items]
Number instruments	1
Notional	46,272
United Dominion Reality L.P. [Member] | Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	2
Notional	166,341
United Dominion Reality L.P. [Member] | Not Designated as Hedging Instrument [Member] | Interest rate caps [Member]
Derivative [Line Items]
Number instruments	1
Notional	$ 89,220

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Consolidated Statements of Changes in Equity (Unaudited) (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Paid - in Capital	Distributions in Excess of Net Income	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2014	$ 2,735,950,000	$ 46,571,000	$ 2,551,000	$ 4,223,747,000	$ (1,528,917,000)	$ (8,855,000)	$ 853,000
Beginning Balance, Shares at Dec. 31, 2014		2,803,812	255,114,603
Stock Redeemed or Called During Period, Value		0			0
Stock Issued During Period, Shares, New Issues			3,439,636
Stock Issued During Period, Shares, Conversion of Units			534
Consolidted Statements of Changes in Equity
Net income/(loss) attributable to UDR, Inc.	73,822,000
Net income/(loss) attributable to noncontrolling interests	7,000						7,000
Other comprehensive income/(loss)	(6,590,000)					(6,590,000)
Issuance/(forfeiture) of common and restricted shares, net Shares			(433,966)
Issuance/(forfeitures) of common and restricted shares, net	1,903,000		4,000	1,899,000
Issuance of common shares through public offering	108,790,000		34,000	108,756,000
Adjustment for conversion of noncontrolling interest of unitholders in Operating Partnership	17,000		(1,000)	(16,000)
Common stock distributions declared ($0.2775 per share)	72,231,000				72,231,000
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests							0
Preferred stock distributions declared-Series E ($0.3322 per share)	931,000				931,000
Adjustment to reflect redemption value of redeemable noncontrolling interests	(29,696,000)				(29,696,000)
Stock Redeemed or Called During Period, Shares		0
Ending Balance at Mar. 31, 2015	$ 2,811,041,000	$ 46,571,000	$ 2,590,000	$ 4,334,418,000	$ (1,557,953,000)	$ (15,445,000)	$ 860,000
Ending Balance, Shares at Mar. 31, 2015		2,803,812	258,988,739

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Significant Accounting Policies (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accounting Policies [Line Items]
Current Income Tax Expense (Benefit)	$ 0
Deferred Tax Assets, Net	7,600,000
Significant Accounting Policies (Textual) [Abstract]
Notes receivable	15,494,000		14,369,000
Note maturity public capital threshold	5,000,000
Note receivable interest income	400,000	1,200,000
Net of a valuation allowance	100,000
Tax benefit/(expense), net	(425,000)	(3,329,000)
Recognition and evaluation of tax position, whether a tax position is more likely	not (greater than 50 percent probability)
Unrecognized tax benefit, accrued interest or penalties due to examination	0
Proceeds from Sale and Collection of Notes Receivable	(1,125,000)	(1,535,000)
Interest Income, Related Party	0	0
Note due February 2017 [Member]
Accounting Policies [Line Items]
Increase (Decrease) in Notes Receivables	1,100,000
Note Receivable Interest Rate	10.00%
Significant Accounting Policies (Textual) [Abstract]
Notes receivable			11,869,000
Note maturity public capital threshold	5,000,000
Aggregate Commitment on Note Receivable	12,994,000
Other [Member]
Accounting Policies [Line Items]
Note Receivable Interest Rate	8.00%
Significant Accounting Policies (Textual) [Abstract]
Notes receivable	2,500,000		2,500,000
Aggregate Commitment on Note Receivable	2,500,000
RedeemableNoncontrollingInterest [Member]
Accounting Policies [Line Items]
Comprehensive (loss)/income attributable to non-controlling interests	$ (225,000)	$ 56,000

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Fair Value of Derivatives and Financial Instruments (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
United Dominion Reality L.P. [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	$ 17	$ 39
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	15,952	14,896
Secured debt instruments - variable rate
Total liabilities	3,676,255	3,721,512
Estimate of Fair Value, Fair Value Disclosure [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	29	88
Derivative Liability Designated as Hedging Instrument, Fair Value	17,112	10,368
Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	425,969	415,663
Secured debt instruments - variable rate
Secured debt instruments - variable rate	31,337	31,337
Estimate of Fair Value, Fair Value Disclosure [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	94,700	94,700
Estimate of Fair Value, Fair Value Disclosure [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	599,580	606,623
Secured debt instruments - variable rate
Secured debt instruments - variable rate	266,196	266,196
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	0	0
Secured debt instruments - variable rate
Total liabilities	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivative Liability Designated as Hedging Instrument, Fair Value	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	29	88
Secured debt instruments - variable rate
Total liabilities	17,112	10,368
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	29	88
Derivative Liability Designated as Hedging Instrument, Fair Value	17,112	10,368
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	15,923	14,808
Secured debt instruments - variable rate
Total liabilities	3,659,143	3,711,144
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivative Liability Designated as Hedging Instrument, Fair Value	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	425,969	415,663
Secured debt instruments - variable rate
Secured debt instruments - variable rate	31,337	31,337
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	94,700	94,700
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	599,580	606,623
Secured debt instruments - variable rate
Secured debt instruments - variable rate	266,196	266,196
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	17	39
Secured debt instruments - variable rate
Total liabilities	962,032	967,983
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	17	39
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	388,821	391,835
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	27,000	27,000
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	352,765	355,470
Secured debt instruments - variable rate
Secured debt instruments - variable rate	192,760	192,760
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	0	0
Secured debt instruments - variable rate
Total liabilities	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivative Liability Designated as Hedging Instrument, Fair Value	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	17	39
Secured debt instruments - variable rate
Total liabilities	686	918
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	17	39
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	0	0
Secured debt instruments - variable rate
Secured debt instruments - variable rate	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	0	0
Secured debt instruments - variable rate
Total liabilities	961,346	967,065
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	0	0
Derivative Liability Designated as Hedging Instrument, Fair Value	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	388,821	391,835
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	27,000	27,000
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	352,765	355,470
Secured debt instruments - variable rate
Secured debt instruments - variable rate	192,760	192,760
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	15,523	14,457
Secured debt instruments - variable rate
Total liabilities	3,533,781	3,593,473
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Total assets	17	39
Secured debt instruments - variable rate
Total liabilities	930,388	932,877
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis
Derivatives - Interest rate contracts	17	39
Derivative Liability Designated as Hedging Instrument, Fair Value	686	918
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	376,207	378,371
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - variable rate
Secured debt instruments - variable rate	27,000	27,000
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member]
Secured debt instruments - fixed rate
Secured debt instruments - fixed rate	333,735	333,828
Secured debt instruments - variable rate
Secured debt instruments - variable rate	$ 192,760	$ 192,760

XML

Secured and Unsecured Debt (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary of unsecured debt
Borrowings outstanding at end of period	$ 1,500	$ 1,900
Unsecured Debt, Total	2,145,996	2,221,576
Unamortized discount	7,000	6,700
Borrowings outstanding under an unsecured credit facility due October 2015 [Member]
Summary of unsecured debt
Borrowings outstanding at end of period	389,000	152,500
4.63% Medium-Term Notes due January 2022 [Member]
Summary of unsecured debt
Senior Unsecured Notes	397,567	397,477
Unamortized discount	2,433	2,523
1.67% Term Notes due December 2016 [Member]
Summary of unsecured debt
Senior Unsecured Notes	35,000	35,000
2.68% Term Notes due December 2016 [Member]
Summary of unsecured debt
Senior Unsecured Notes	100,000	100,000
5.25% Medium-Term Notes due January 2015 [Member]
Summary of unsecured debt
Senior Unsecured Notes	0	325,169
Unamortized discount	0	6
5.25% Medium-Term Notes due January 2016 [Member]
Summary of unsecured debt
Senior Unsecured Notes	83,260	83,260
2.90% Term Notes due January 2016 [Member]
Summary of unsecured debt
Senior Unsecured Notes	215,000	215,000
8.50% Debentures due September 2024 [Member]
Summary of unsecured debt
Senior Unsecured Notes	15,644	15,644
4.25% Medium-Term Notes due June 2018 [Member]
Summary of unsecured debt
Senior Unsecured Notes	298,642	298,535
Unamortized discount	1,358	1,465
Other [Member]
Summary of unsecured debt
Senior Unsecured Notes	$ 26	$ 27

XML

Related Party Transactions (UNITED DOMINION REALTY, L.P.) (United Dominion Reality L.P. [Member])

3 Months Ended

Mar. 31, 2015

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

Advances (To)/From the General Partner

The Operating Partnership participates in the General Partner’s central cash management program, wherein all the Operating Partnership’s cash receipts are remitted to the General Partner and all cash disbursements are funded by the General Partner. In addition, other miscellaneous costs such as administrative expenses are incurred by the General Partner on behalf of the Operating Partnership. As a result of these various transactions between the Operating Partnership and the General Partner, the Operating Partnership had net Advances (to)/from General Partner of $22.4 million and $13.6 million at March 31, 2015 and December 31, 2014, respectively, which are reflected as increases of capital on the Consolidated Balance Sheets.

Allocation of General and Administrative Expenses

The General Partner provides various general and administrative and other overhead services for the Operating Partnership including legal assistance, acquisitions analysis, marketing and advertising, and allocates these expenses to the Operating Partnership first on the basis of direct usage when identifiable, with the remainder allocated based on its pro-rata portion of UDR’s total apartment homes. The general and administrative expenses allocated to the Operating Partnership by UDR were $4.2 million and $6.7 million during the three months endedMarch 31, 2015 and 2014, respectively, and are included in General and administrative on the Consolidated Statements of Operations. In the opinion of management, this method of allocation reflects the level of services received by the Operating Partnership from the General Partner.

During the three months endedMarch 31, 2015 and 2014, the Operating Partnership incurred $4.3 million and $3.1 million, respectively, of related party management fees related to a management agreement entered into in 2011 with wholly-owned subsidiaries of UDR's taxable REIT subsidiary ("TRS"). (See further discussion in paragraph below.) These related party management fees are initially recorded in General and administrative on the Consolidated Statements of Operations, and a portion related to management fees charged by UDR's TRS is reclassified to Property management on the Consolidated Statements of Operations. (See further discussion below.)

Management Fee

In 2011, the Operating Partnership entered into a management agreement with wholly owned subsidiaries of UDR's TRS. Under the management agreement, the Operating Partnership is charged a management fee equal to 2.75% of gross rental revenues, which is classified in Property management on the Consolidated Statements of Operations.

Notes Payable to General Partner

As of March 31, 2015 and December 31, 2014, the Operating Partnership had $88.7 million of unsecured notes payable to the General Partner at annual interest rates between 5.18% and 5.34%. Certain limited partners of the Operating Partnership have provided guarantees related to these notes payable. The guarantees were provided by the limited partners in conjunction with their contribution of properties to the Operating Partnership. The notes mature on August 31, 2021 and December 31, 2023 and interest payments are made monthly. The Operating Partnership recognized interest expense on the notes payable of $1.2 million and $1.2 million during the three months endedMarch 31, 2015 and 2014, respectively.

XML

Debt (UNITED DOMINION REALTY, L.P.) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Weighted average interest rate	3.62%
Debt Instrument Weighted Average Years to Maturity	4 years 4 months 9 days
Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Principal outstanding	$ 978,440	$ 969,296
Weighted average interest rate	5.28%
Debt Instrument Weighted Average Years to Maturity	2 years 9 months 10 days
Number of Communities Encumbered (in communities)	29
Fixed Rate Debt [Member] | Mortgages Notes Payable [Member]
Debt Instrument [Line Items]
Weighted average interest rate	5.49%
Debt Instrument Weighted Average Years to Maturity	1 year 4 months 20 days
Number of Communities Encumbered (in communities)	7
Fixed Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	3 years 9 months 10 days
Number of Communities Encumbered (in communities)	22
Variable Rate Debt [Member]
Debt Instrument [Line Items]
Principal outstanding	392,233	392,233
Weighted average interest rate	1.44126%
Debt Instrument Weighted Average Years to Maturity	5 years 4 months 24 days
Number of Communities Encumbered (in communities)	10
Variable Rate Debt [Member] | Mortgages Notes Payable [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.94%
Debt Instrument Weighted Average Years to Maturity	1 year 9 months 25 days
Number of Communities Encumbered (in communities)	1
Variable Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Debt Instrument Weighted Average Years to Maturity	4 years 11 months 8 days
Number of Communities Encumbered (in communities)	7
Variable Rate Debt [Member] | Tax Exempt Notes Payable [Member]
Debt Instrument [Line Items]
Weighted average interest rate	0.76%
Debt Instrument Weighted Average Years to Maturity	7 years 11 months 8 days
Number of Communities Encumbered (in communities)	2
United Dominion Reality L.P. [Member]
Debt Instrument [Line Items]
Principal outstanding	929,702	931,959
Weighted average interest rate	4.38%
Debt Instrument Weighted Average Years to Maturity	3 years 9 months 10 days
Number of Communities Encumbered (in communities)	21
United Dominion Reality L.P. [Member] | Fixed Rate Debt [Member]
Debt Instrument [Line Items]
Principal outstanding	709,942	712,199
Weighted average interest rate	5.21%
Debt Instrument Weighted Average Years to Maturity	2 years 9 months
Number of Communities Encumbered (in communities)	15
United Dominion Reality L.P. [Member] | Fixed Rate Debt [Member] | Mortgages Notes Payable [Member]
Debt Instrument [Line Items]
Principal outstanding	376,207	378,371
Weighted average interest rate	5.48%
Debt Instrument Weighted Average Years to Maturity	1 year 4 months 7 days
Number of Communities Encumbered (in communities)	5
United Dominion Reality L.P. [Member] | Fixed Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Weighted average interest rate	4.90%
Debt Instrument Weighted Average Years to Maturity	4 years 3 months 25 days
Number of Communities Encumbered (in communities)	10
United Dominion Reality L.P. [Member] | Variable Rate Debt [Member]
Debt Instrument [Line Items]
Principal outstanding	219,760	219,760
Weighted average interest rate	1.72%
Debt Instrument Weighted Average Years to Maturity	7 years 1 month 13 days
Number of Communities Encumbered (in communities)	6
United Dominion Reality L.P. [Member] | Variable Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.85%
Debt Instrument Weighted Average Years to Maturity	5 years 8 months 26 days
Number of Communities Encumbered (in communities)	5
United Dominion Reality L.P. [Member] | Variable Rate Debt [Member] | Tax Exempt Notes Payable [Member]
Debt Instrument [Line Items]
Principal outstanding	27,000	27,000
Weighted average interest rate	0.77%
Debt Instrument Weighted Average Years to Maturity	16 years 11 months 19 days
Number of Communities Encumbered (in communities)	1
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Fixed Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Principal outstanding	567,169	568,086
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | Variable Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Principal outstanding	266,196	266,196
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | United Dominion Reality L.P. [Member] | Fixed Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Principal outstanding	333,735	333,828
Line of Credit [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | United Dominion Reality L.P. [Member] | Variable Rate Debt [Member] | Fannie Mae credit facilities [Member]
Debt Instrument [Line Items]
Principal outstanding	$ 192,760	$ 192,760

XML

Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Comprehensive Income, Policy [Policy Text Block]

Comprehensive Income/(Loss)

Comprehensive income/(loss), which is defined as the change in equity during each period from transactions and other events and circumstances from nonowner sources, including all changes in equity during a period except for those resulting from investments by or distributions to stockholders, is displayed in the accompanying Consolidated Statements of Comprehensive Income/(Loss). For the three months endedMarch 31, 2015 and 2014, the Company’s other comprehensive income/(loss) consisted of the gain/(loss) (effective portion) on derivative instruments that are designated as and qualify as cash flow hedges, (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) into earnings, and the allocation of other comprehensive income/(loss) to redeemable noncontrolling interests. The (gain)/loss on derivative instruments reclassified from other comprehensive income/(loss) is included in Interest expense on the Consolidated Statements of Operations. See Note 10, Derivatives and Hedging Activity, for further discussion. The allocation of other comprehensive income/(loss) to redeemable noncontrolling interests was $(225,000) and $56,000 during the three months endedMarch 31, 2015 and 2014, respectively.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard specifically excludes lease contracts. The ASU allows for the use of either the full or modified retrospective transition method, and the standard will be effective for the Company on January 1, 2017; early adoption is not permitted. The Company has not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Discontinued Operations

In accordance with GAAP, a discontinued operation represents (1) a component of an entity or group of components that has been disposed of or is classified as held for sale in a single transaction and represents a strategic shift that has or will have a major effect on an entity’s financial results, or (2) an acquired business that is classified as held for sale on the date of acquisition. A strategic shift could include a disposal of (1) a separate major line of business, (2) a separate major geographic area of operations, (3) a major equity method investment, or (4) other major parts of an entity.

We record sales of real estate that do not meet the definition of a discontinued operation in Gain/(loss) on sale of real estate owned, net of taxon the Consolidated Statements of Operations.

Revenue and real estate sales gain recognition

Revenue and Real Estate Sales Gain Recognition

Rental income related to leases is recognized on an accrual basis when due from residents and tenants in accordance with GAAP. Rental payments are generally due on a monthly basis and recognized when earned. The Company recognizes interest income, management and other fees and incentives when earned, and the amounts are fixed and determinable.

For sale transactions meeting the requirements for full accrual profit recognition, we remove the related assets and liabilities from our Consolidated Balance Sheets and record the gain or loss in the period the transaction closes. For sale transactions that do not meet the full accrual sale criteria due to our continuing involvement, we evaluate the nature of the continuing involvement and account for the transaction under an alternate method of accounting. Unless certain limited criteria are met, non-monetary transactions, including property exchanges, are accounted for at fair value.

Sales to entities in which we retain or otherwise own an interest are accounted for as partial sales. If all other requirements for recognizing profit under the full accrual method have been satisfied and no other forms of continuing involvement are present, we recognize profit proportionate to the outside interest in the buyer and defer the gain on the interest we retain. The Company recognizes any deferred gain when the property is sold to a third party. In transactions accounted for by us as partial sales, we determine if the buyer of the majority equity interest in the venture was provided a preference as to cash flows in either an operating or a capital waterfall. If a cash flow preference has been provided, we recognize profit only to the extent that proceeds from the sale of the majority equity interest exceed costs related to the entire propert

Income Taxes

Income Taxes

Due to the structure of the Company as a REIT and the nature of the operations for the operating properties, no provision for federal income taxes has been provided for at UDR. Historically, the Company has generally incurred only state and local excise and franchise taxes. UDR has elected for certain consolidated subsidiaries to be treated as taxable REIT subsidiaries (“TRS”), primarily those engaged in development activities.

Income taxes for our TRS are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rate is recognized in earnings in the period of the enactment date. The Company’s deferred tax assets are generally the result of differing depreciable lives on capitalized assets and timing of expense recognition for certain accrued liabilities. As of March 31, 2015, UDR’s net deferred tax asset was $7.6 million (net of a valuation allowance of less than $0.1 million), which is included in Other assets on the Consolidated Balance Sheets.

GAAP defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. GAAP also provides guidance on derecognition, classification, interest and penalties, accounting for interim periods, disclosure and transition.

The Company recognizes its tax positions and evaluates them using a two-step process. First, UDR determines whether a tax position is more likely than not (greater than 50 percent probability) to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Second, the Company will determine the amount of benefit to recognize and record the amount that is more likely than not to be realized upon ultimate settlement.

UDR had no material unrecognized tax benefit, accrued interest or penalties at March 31, 2015. UDR and its subsidiaries are subject to federal income tax as well as income tax of various state and local jurisdictions. The tax years 2010 through 2013 remain open to examination by tax jurisdictions to which we are subject. When applicable, UDR recognizes interest and/or penalties related to uncertain tax positions in Tax benefit/(expense), net on the Consolidated Statements of Operations.

Policy Loans Receivable, Policy [Policy Text Block]

Notes Receivable

The following table summarizes our notes receivable, net as of March 31, 2015 and December 31, 2014 (dollars in thousands):

	Interest rate at		Balance outstanding
	March 31, 2015		March 31, 2015		December 31, 2014
Note due February 2017 (a)	10.00	%	$	12,994	$	11,869
Note due July 2017 (b)	8.00	%	2,500		2,500
Total notes receivable, net			$	15,494	$	14,369

(a) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $13.0 million. During the three months ended March 31, 2015, the Company loaned an additional $1.1 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (February 2017).

(b) The Company has a secured note receivable with an unaffiliated third party with an aggregate commitment of $2.5 million. Interest payments are due monthly. The note matures at the earliest of the following: (a) the closing of any private or public capital raising in the amount of $5.0 million or greater; (b) an acquisition; (c) acceleration in the event of default; or (d) the fifth anniversary of the date of the note (July 2017).

The Company recognized $0.4 million and $1.2 million of interest income from notes receivable during the three months endedMarch 31, 2015 and 2014, respectively, none of which was related party interest income. Interest income is included in Interest and other income/(expense), net on the Consolidated Statements of Operations.

XML

Real Estate Owned (UNITED DOMINION REALTY, L.P.)

3 Months Ended

Mar. 31, 2015

Entity Information [Line Items]

REAL ESTATE OWNED

REAL ESTATE OWNED

Real estate assets owned by the Company consist of income producing operating properties, properties under development, land held for future development, and sold or held for disposition properties. As of March 31, 2015, the Company owned and consolidated 138 communities in 10 states plus the District of Columbia totaling 39,956 apartment homes. The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land and land improvements	$	1,984,019		$	1,980,221
Depreciable property — held and used:
Building, improvements, and furniture, fixtures and equipment	6,272,976			6,225,406
Under development:
Land and land improvements	24,584			24,584
Building, improvements, and furniture, fixtures and equipment	172,069			153,048
Real estate owned	8,453,648			8,383,259
Accumulated depreciation	(2,522,100		)	(2,434,772		)
Real estate owned, net	$	5,931,548		$	5,948,487

In February 2015, the Company acquired an office building in Highlands Ranch, Colorado, for total consideration of approximately $24.0 million, which was comprised of assumed debt. The Company's corporate offices, as well as other leased office space, are located in the acquired building. The building consists of approximately 120,000 square feet, of which UDR occupies approximately 44,000 square feet. All existing leases were assumed by the Company at the time of acquisition.

During the three months endedMarch 31, 2015, the Company did not sell or have any properties classified as held for sale.

Predevelopment, development, and redevelopment projects and related costs are capitalized and reported on the Consolidated Balance Sheets as Total real estate owned, net of accumulated depreciation. The Company capitalizes costs directly related to the predevelopment, development, and redevelopment of a capital project, which include, but are not limited to, interest, real estate taxes, insurance, and allocated development and redevelopment overhead related to support costs for personnel working on the capital projects. We use our professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. These costs, excluding the direct costs of development and redevelopment and capitalized interest, were $2.2 million and $3.4 million for the three months endedMarch 31, 2015 and 2014, respectively. Total interest capitalized was $4.8 million and $5.3 million for the three months endedMarch 31, 2015 and 2014, respectively. As each home in a capital project is completed and becomes available for lease-up, the Company ceases capitalization on the related portion and depreciation commences over the estimated useful life.

During the three months endedMarch 31, 2015, the Company recorded a loss of of $996,000 related to damage caused by severe snow storms to properties located on the east coast, which is included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.

United Dominion Reality L.P. [Member]

Entity Information [Line Items]

REAL ESTATE OWNED

REAL ESTATE OWNED

Real estate assets owned by the Operating Partnership consists of income producing operating properties, properties under development, land held for future development, and sold or held for disposition properties. As of March 31, 2015, the Operating Partnership owned and consolidated 68 communities in nine states plus the District of Columbia totaling 20,809 apartment homes. The following table summarizes the carrying amounts for our real estate owned (at cost) as of March 31, 2015 and December 31, 2014(dollars in thousands):

	March 31, 2015			December 31, 2014
Land	$	1,008,358		$	1,008,014
Depreciable property — held and used:
Buildings, improvements, and furniture, fixture and equipment	3,240,437			3,230,756
Real estate owned	4,248,795			4,238,770
Accumulated depreciation	(1,447,513		)	(1,403,303		)
Real estate owned, net	$	2,801,282		$	2,835,467

The Operating Partnership did not have any acquisitions or real estate sales during the three months endedMarch 31, 2015.

Predevelopment, development, and redevelopment projects and related costs are capitalized and reported on the Consolidated Balance Sheets asTotal real estate owned, net of accumulated depreciation. The Operating Partnership capitalizes costs directly related to the predevelopment, development, and redevelopment of a capital project, which include, but are not limited to, interest, real estate taxes, insurance, and allocated development and redevelopment overhead related to support costs for personnel working on the capital projects. We use our professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. These costs, excluding the direct costs of development and redevelopment and capitalized interest, were $133,000 and $1.0 million for the three months endedMarch 31, 2015 and 2014, respectively. Total interest capitalized was $22,000 and $755,000 during the three months endedMarch 31, 2015 and 2014, respectively. As each home in a capital project is completed and becomes available for lease-up, the Company ceases capitalization on the related portion and depreciation commences over the estimated useful life.

During the three months endedMarch 31, 2015, the Company recorded a loss of of $593,000 related to damage caused by severe snow storms to properties located on the east coast, which is included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.