10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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 SEPTEMBER 30, 2008

OR

¨ 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: 0-24920

ERP OPERATING LIMITED PARTNERSHIP

(Exact Name of Registrant as Specified in its Charter)

Illinois	36-3894853
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
Two North Riverside Plaza, Chicago, Illinois	60606
(Address of Principal Executive Offices)	(Zip Code)

(312) 474-1300

(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.    Yes  x    No  ¨

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.

Large accelerated filer  x	Accelerated filer	¨
Non-accelerated filer    ¨     (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨     No   x

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED BALANCE SHEETS

(Amounts in thousands)

(Unaudited)

	September 30,     2008		December 31,     2007
ASSETS
Investment in real estate
Land	$	3,653,808	$	3,607,305
Depreciable property		13,760,599		13,556,681
Projects under development		852,597		828,530
Land held for development		366,822		340,834
Investment in real estate		18,633,826		18,333,350
Accumulated depreciation		(3,422,371)		(3,170,125)
Investment in real estate, net		15,211,455		15,163,225
Cash and cash equivalents		530,050		50,831
Investments in unconsolidated entities		3,131		3,547
Deposits – restricted		395,658		253,276
Escrow deposits – mortgage		21,834		20,174
Deferred financing costs, net		54,210		56,271
Other assets		150,986		142,453
Total assets	$	16,367,324	$	15,689,777
LIABILITIES AND PARTNERS’ CAPITAL
Liabilities:
Mortgage notes payable	$	4,493,886	$	3,605,971
Notes, net		5,607,519		5,763,762
Lines of credit		-		139,000
Accounts payable and accrued expenses		173,658		109,385
Accrued interest payable		79,572		124,717
Other liabilities		313,629		322,975
Security deposits		64,066		62,159
Distributions payable		141,629		141,244
Total liabilities		10,873,959		10,269,213
Commitments and contingencies
Minority Interests – Partially Owned Properties		26,506		26,236
Partners’ capital:
Preference Units		209,049		209,662
Preference Interests and Junior Preference Units		184		184
General Partner		4,973,731		4,868,738
Limited Partners		310,572		331,626
Accumulated other comprehensive loss		(26,677)		(15,882)
Total partners’ capital		5,466,859		5,394,328
Total liabilities and partners’ capital	$	16,367,324	$	15,689,777

See accompanying notes

2

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS

(Amounts in thousands except per OP Unit data)

(Unaudited)

	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
REVENUES
Rental income	$	1,566,821	$	1,440,041	$	535,932	$	498,868
Fee and asset management		7,397		6,937		2,387		2,234
Total revenues		1,574,218		1,446,978		538,319		501,102
EXPENSES
Property and maintenance		409,755		378,586		141,555		132,162
Real estate taxes and insurance		162,470		149,521		55,206		49,765
Property management		59,536		68,960		18,902		21,698
Fee and asset management		6,154		6,604		1,983		2,100
Depreciation		437,935		420,347		152,157		143,987
General and administrative		34,040		33,182		9,849		12,366
Impairment		2,800		1,020		2,097		626
Total expenses		1,112,690		1,058,220		381,749		362,704
Operating income		461,528		388,758		156,570		138,398
Interest and other income		11,019		12,335		2,838		6,119
Interest:
Expense incurred, net		(355,035)		(360,207)		(120,304)		(128,214)
Amortization of deferred financing costs		(6,751)		(7,853)		(2,411)		(2,031)
Income before income and other taxes, allocation to Minority Interests, income from investments in unconsolidated entities, net gain on sales of unconsolidated entities and land parcels and discontinued operations		110,761		33,033		36,693		14,272
Income and other tax (expense) benefit		(5,941)		(1,468)		(1,317)		(770)
Allocation to Minority Interests – Partially Owned Properties		(1,765)		(997)		(106)		(218)
Income from investments in unconsolidated entities		60		185		250		548
Net gain on sales of unconsolidated entities		-		2,629		-		2,629
Net gain on sales of land parcels		2,976		5,230		2,976		714
Income from continuing operations		106,091		38,612		38,496		17,175
Discontinued operations, net		374,344		885,144		151,041		471,404
Net income	$	480,435	$	923,756	$	189,537	$	488,579
ALLOCATION OF NET INCOME:
Preference Units	$	10,887	$	19,157	$	3,628	$	4,317
Preference Interests and Junior Preference Units	$	11	$	437	$	4	$	3
Premium on redemption of Preference Units	$	-	$	6,144	$	-	$	6,144
General Partner	$	440,448	$	841,044	$	174,613	$	447,246
Limited Partners		29,089		56,974		11,292		30,869
Net income available to OP Units	$	469,537	$	898,018	$	185,905	$	478,115
Earnings per OP Unit – basic:
Income from continuing operations available to OP Units	$	0.33	$	0.04	$	0.12	$	0.02
Net income available to OP Units	$	1.63	$	2.97	$	0.65	$	1.64
Weighted average OP Units outstanding		287,422		301,987		287,743		290,977
Earnings per OP Unit – diluted:
Income from continuing operations available to OP Units	$	0.33	$	0.04	$	0.12	$	0.02
Net income available to OP Units	$	1.62	$	2.93	$	0.64	$	1.62
Weighted average OP Units outstanding		290,267		306,052		290,795		294,331
Distributions declared per OP Unit outstanding	$	1.4475	$	1.3875	$	0.4825	$	0.4625

See accompanying notes

3

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS (Continued)

(Amounts in thousands except per OP Unit data)

(Unaudited)

	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
Comprehensive income:
Net income	$	480,435	$	923,756	$	189,537	$	488,579
Other comprehensive income (loss) – derivative and other instruments:
Unrealized holding (losses) gains arising during the period		(12,723)		3,849		(7,144)		(2,242)
Losses reclassified into earnings from other comprehensive income		1,928		1,501		712		449
Comprehensive income	$	469,640	$	929,106	$	183,105	$	486,786

See accompanying notes

4

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2008		2007
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	480,435	$	923,756
Adjustments to reconcile net income to net cash provided by operating activities:
Allocation to Minority Interests – Partially Owned Properties		1,765		997
Depreciation		447,936		466,035
Amortization of deferred financing costs		6,751		9,520
Amortization of discounts and premiums on debt		(3,494)		(3,835)
Amortization of deferred settlements on derivative instruments		893		466
Impairment		2,856		1,020
(Income) from investments in unconsolidated entities		(60)		(185)
Distributions from unconsolidated entities – return on capital		71		76
Net (gain) on sales of unconsolidated entities		-		(2,629)
Net (gain) on sales of land parcels		(2,976)		(5,230)
Net (gain) on sales of discontinued operations		(365,052)		(847,490)
(Gain) loss on debt extinguishments		(225)		3,339
Unrealized loss (gain) on derivative instruments		68		(1)
Compensation paid with Company Common Shares		16,753		14,963
Other operating activities, net		-		164
Changes in assets and liabilities:
(Increase) decrease in deposits – restricted		(2,086)		1,509
(Increase) in other assets		(16,167)		(2,176)
Increase in accounts payable and accrued expenses		66,078		40,686
(Decrease) in accrued interest payable		(45,145)		(1,250)
(Decrease) in other liabilities		(19,829)		(15,023)
Increase in security deposits		1,907		4,124
Net cash provided by operating activities		570,479		588,836
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in real estate – acquisitions		(344,231)		(1,575,814)
Investment in real estate – development/other		(399,339)		(327,936)
Improvements to real estate		(131,365)		(185,301)
Additions to non-real estate property		(2,050)		(5,962)
Interest capitalized for real estate under development		(45,117)		(30,753)
Proceeds from disposition of real estate, net		829,125		1,824,979
Proceeds from disposition of unconsolidated entities		2,629		-
Investments in unconsolidated entities		-		(191)
Distributions from unconsolidated entities – return of capital		405		13
(Increase) decrease in deposits on real estate acquisitions, net		(168,936)		62,674
(Increase) decrease in mortgage deposits		(1,660)		2,486
Acquisition of Minority Interests – Partially Owned Properties		(20)		-
Other investing activities, net		-		1,200
Net cash (used for) investing activities		(260,559)		(234,605)

See accompanying notes

5

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2008		2007
CASH FLOWS FROM FINANCING ACTIVITIES:
Loan and bond acquisition costs	$	(6,199)	$	(23,118)
Mortgage notes payable:
Proceeds		1,242,425		646,930
Restricted cash		28,390		(124,774)
Lump sum payoffs		(359,782)		(348,270)
Scheduled principal repayments		(18,949)		(18,536)
Prepayment premiums/fees		(41)		(3,339)
Notes, net:
Proceeds		-		993,031
Lump sum payoffs		(147,124)		(100,000)
Scheduled principal repayments		-		(4,286)
Gain on debt extinguishments		266		-
Lines of credit:
Proceeds		841,000		15,543,000
Repayments		(980,000)		(15,363,000)
(Payments on) proceeds from settlement of derivative instruments		(13,256)		2,370
Proceeds from sale of OP Units		5,085		5,715
Proceeds from exercise of EQR options		16,772		10,870
OP Units repurchased and retired		(10,935)		(1,136,844)
Redemption of Preference Units		-		(175,000)
Premium on redemption of Preference Units		(4)		(14)
Payment of offering costs		(88)		(175)
Other financing activities, net		(8)		(7)
Contributions – Minority Interests – Partially Owned Properties		1,842		10,600
Distributions:
OP Units – General Partner		(391,072)		(400,907)
Preference Units		(10,893)		(22,313)
Preference Interests and Junior Preference Units		(11)		(450)
OP Units – Limited Partners		(26,309)		(26,955)
Minority Interests – Partially Owned Properties		(1,810)		(16,302)
Net cash provided by (used for) financing activities		169,299		(551,774)
Net increase (decrease) in cash and cash equivalents		479,219		(197,543)
Cash and cash equivalents, beginning of period		50,831		260,277
Cash and cash equivalents, end of period	$	530,050	$	62,734

See accompanying notes

6

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2008		2007
SUPPLEMENTAL INFORMATION:
Cash paid for interest, net of amounts capitalized	$	402,810	$	368,545
Net cash paid (received) for income and other taxes	$	2,302	$	(266)
Real estate acquisitions/dispositions/other:
Mortgage loans assumed	$	24,946	$	197,801
Valuation of OP Units issued	$	849	$	-
Mortgage loans (assumed) by purchaser	$	-	$	(76,744)
Amortization of deferred financing costs:
Investment in real estate, net	$	(1,509)	$	(755)
Deferred financing costs, net	$	8,260	$	10,275
Amortization of discounts and premiums on debt:
Investment in real estate, net	$	(3)	$	-
Mortgage notes payable	$	(4,717)	$	(4,688)
Notes, net	$	1,226	$	853
Amortization of deferred settlements on derivative instruments:
Other liabilities	$	(1,035)	$	(1,035)
Accumulated other comprehensive loss	$	1,928	$	1,501
Unrealized loss (gain) on derivative instruments:
Other assets	$	(3,777)	$	(2,322)
Mortgage notes payable	$	3,992	$	4,330
Notes, net	$	1,011	$	2,201
Other liabilities	$	11,279	$	(8,077)
Accumulated other comprehensive loss	$	(12,437)	$	3,867
(Payments on) proceeds from settlement of derivative instruments:
Other assets	$	(39)	$	2,375
Other liabilities	$	(13,217)	$	(5)
Repurchase of notes, net not yet settled:
Other liabilities	$	(11,356)	$	-

See accompanying notes

7

ERP OPERATING LIMITED PARTNERSHIP

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. Business

ERP Operating Limited Partnership (“ERPOP”), an Illinois limited partnership, was formed in May 1993 to conduct the multifamily residential property business of Equity Residential (“EQR”). EQR, a Maryland real estate investment trust (“REIT”) formed in March 1993, is an S&P 500 company focused on the acquisition, development and management of high quality apartment properties in top United States growth markets. EQR has elected to be taxed as a REIT.

EQR is the general partner of, and as of September 30, 2008 owned an approximate 94.1% ownership interest in ERPOP. EQR is structured as an umbrella partnership REIT (“UPREIT”), under which all property ownership and business operations are conducted through ERPOP and its subsidiaries. References to the “Operating Partnership” include ERPOP and those entities owned or controlled by it. References to the “Company” mean EQR and the Operating Partnership.

As of September 30, 2008, the Operating Partnership, directly or indirectly through investments in title holding entities, owned all or a portion of 554 properties in 23 states and the District of Columbia consisting of 147,326 units. The ownership breakdown includes (table does not include various uncompleted development properties):

	Properties	Units
Wholly Owned Properties	481	127,440
Partially Owned Properties:
Consolidated	28	5,709
Unconsolidated	44	10,446
Military Housing (Fee Managed)	1	3,731
	554	147,326

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) and certain reclassifications considered necessary for a fair presentation have been included. Certain reclassifications have been made to the prior period financial statements in order to conform to the current year presentation. Operating results for the nine months ended September 30, 2008 are not necessarily indicative of the results that may be expected for the year ending December 31, 2008.

In preparation of the Operating Partnership’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

The balance sheet at December 31, 2007 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

8

For further information, including definitions of capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Operating Partnership’s annual report on Form 10-K for the year ended December 31, 2007.

Income and Other Taxes

The Operating Partnership generally is not liable for federal income taxes as the partners recognize their proportionate share of the Operating Partnership’s income or loss in their tax returns; therefore no provision for federal income taxes has been made at the ERPOP level. Historically, the Operating Partnership has generally only incurred certain state and local income, excise and franchise taxes. The Operating Partnership has elected Taxable REIT Subsidiary (“TRS”) status for certain of its corporate subsidiaries, primarily those entities engaged in condominium conversion and corporate housing activities and as a result, these entities will incur both federal and state income taxes on any taxable income of such entities.

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 bases. These assets and liabilities are measured using enacted tax rates for which the temporary differences are expected to be recovered or settled. The effect of deferred tax assets and liabilities are recognized in earnings in the period enacted. The Operating Partnership’s deferred tax assets are generally the result of tax affected amortization of goodwill, differing depreciable lives on capitalized assets and the timing of expense recognition for certain accrued liabilities. As of September 30, 2008, the Operating Partnership has recorded a deferred tax asset of approximately $12.5 million, which was fully offset by a valuation allowance due to the uncertainty in forecasting future TRS taxable income.

Other

The Company adopted SFAS No. 123(R), Share-Based Payment, as required effective January 1, 2006. SFAS No. 123(R) requires all companies to expense share-based compensation (such as share options), as well as making other revisions to SFAS No. 123. As the Company began expensing all share-based compensation effective January 1, 2003, the adoption of SFAS No. 123(R) did not have a material effect on its consolidated statements of operations or financial position.

Any EQR common share of beneficial interest, $0.01 par value per share (the “Common Shares”) issued pursuant to EQR’s incentive equity compensation and employee share purchase plans will result in the Operating Partnership issuing units of limited partnership interest (“OP Units”) to EQR on a one-for-one basis, with the Operating Partnership receiving the net cash proceeds of such issuances.

The Operating Partnership adopted the disclosure provisions of SFAS No. 150 and FSP No. FAS 150-3, Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity, effective December 31, 2003. SFAS No. 150 and FSP No. FAS 150-3 require the Operating Partnership to make certain disclosures regarding noncontrolling interests that are classified as equity in the financial statements of a subsidiary but would be classified as a liability in the parent’s financial statements under SFAS No. 150 (e.g., minority interests in consolidated limited-life subsidiaries). The Operating Partnership is presently the controlling partner in various consolidated partnerships consisting of 28 properties and 5,709 units and various uncompleted development properties having a minority interest book value of $26.5 million at September 30, 2008. Some of these partnerships contain provisions that require the partnerships to be liquidated through the sale of its assets upon reaching a date specified in each respective partnership agreement. The Operating Partnership, as controlling partner, has an obligation to cause the property owning partnerships to distribute proceeds of liquidation to the Minority Interests in these Partially Owned Properties only to the extent that the net proceeds received by the partnerships from the sale of its assets warrant a distribution based on the partnership agreements. As of September 30, 2008, the Operating Partnership estimates the value of Minority Interest distributions would have been approximately $102.0 million

9

(“Settlement Value”) had the partnerships been liquidated. This Settlement Value is based on estimated third party consideration realized by the partnerships upon disposition of the Partially Owned Properties and is net of all other assets and liabilities, including yield maintenance on the mortgages encumbering the properties, that would have been due on September 30, 2008 had those mortgages been prepaid. Due to, among other things, the inherent uncertainty in the sale of real estate assets, the amount of any potential distribution to the Minority Interests in the Operating Partnership’s Partially Owned Properties is subject to change. To the extent that the partnerships’ underlying assets are worth less than the underlying liabilities, the Operating Partnership has no obligation to remit any consideration to the Minority Interests in Partially Owned Properties.

In July 2006, the FASB ratified the consensus in FIN No. 48, Accounting for Uncertainty in Income Taxes. FIN No. 48 creates a single model to address uncertainty in income tax positions and prescribes a minimum recognition threshold a tax position is required to meet before being recognized in the financial statements. It also provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure and transition and clearly scopes income taxes out of SFAS No. 5, Accounting for Contingencies. The Operating Partnership adopted FIN No. 48 as required effective January 1, 2007. The adoption of FIN No. 48 did not have a material effect on the consolidated results of operations or financial position.

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements. SFAS No. 157 defines fair value, establishes a framework for measuring fair value in accordance with accounting principles generally accepted in the United States and expands disclosure about fair value measurements. The Operating Partnership adopted SFAS No. 157 as required effective January 1, 2008. The adoption of SFAS No. 157 did not have a material effect on the consolidated results of operations or financial position. See Note 11 in the Notes to Consolidated Financial Statements for further discussion.

In February 2007, the FASB issued SFAS No. 159, The Fair Value Option for Financial Assets and Financial Liabilities. SFAS No. 159 provides a “Fair Value Option” under which a company may irrevocably elect fair value as the initial and subsequent measurement attribute for certain financial instruments. The Fair Value Option will be available on a contract-by-contract basis with changes in fair value recognized in earnings as those changes occur. SFAS No. 159 is effective beginning January 1, 2008, but the Operating Partnership has decided not to adopt this optional standard.

In December 2007, the FASB issued SFAS No. 141(R), Business Combinations. SFAS No. 141(R) will significantly change the accounting for business combinations. Under SFAS No. 141(R), an acquiring entity will be required to recognize all the assets acquired and liabilities assumed in a transaction at the acquisition-date fair value with limited exceptions. SFAS No. 141(R) will change the accounting treatment for certain specific acquisition related items including: (1) expensing acquisition related costs as incurred; (2) valuing noncontrolling interests at fair value at the acquisition date; and (3) expensing restructuring costs associated with an acquired business. SFAS No. 141(R) also includes a substantial number of new disclosure requirements. SFAS No. 141(R) is to be applied prospectively to business combinations for which the acquisition date is on or after January 1, 2009. We expect SFAS No. 141(R) will have an impact on our accounting for future business combinations once adopted, but we are currently assessing the impact it will have on the consolidated results of operations and financial position.

In December 2007, the FASB issued SFAS No. 160, Noncontrolling Interests in Consolidated Financial Statements. SFAS No. 160 establishes new accounting and reporting standards for the noncontrolling interest in a subsidiary and for the deconsolidation of a subsidiary. It clarifies that a noncontrolling interest in a subsidiary (minority interest) is an ownership interest in the consolidated entity that should be reported as equity in the Consolidated Financial Statements and separate from the parent company’s equity. Among other requirements, this statement requires consolidated net income to be reported at amounts that include the amounts attributable to both the parent and the noncontrolling interest. It also requires disclosure, on the face of the Consolidated Statements of Operations, of the amounts of consolidated

10

net income attributable to the parent and to the noncontrolling interest. This statement is effective for the Operating Partnership on January 1, 2009. The Operating Partnership is currently evaluating the impact SFAS No. 160 will have on its consolidated results of operations and financial position.

In March 2008, the FASB issued SFAS No. 161, Disclosures about Derivative Instruments and Hedging Activities – an amendment of FASB Statement No. 133. SFAS No. 161 is intended to improve financial standards for derivative instruments and hedging activities by requiring enhanced disclosures to enable investors to better understand their effects on an entity’s financial position, financial performance, and cash flows. Among other requirements, entities are required to provide enhanced disclosures about: (1) how and why an entity uses derivative instruments; (2) how derivative instruments and related hedged items are accounted for under SFAS No. 133 and its related interpretations; and (3) how derivative instruments and related hedged items affect an entity’s financial position, financial performance and cash flows. SFAS No. 161 is effective for the Operating Partnership on January 1, 2009. The Operating Partnership is currently evaluating the impact SFAS No. 161 will have on its consolidated financial statements.

In May 2008, the FASB issued FSP No. APB 14-1, Accounting for Convertible Debt Instruments That May Be Settled in Cash upon Conversion (Including Partial Cash Settlement) (“APB 14-1”). APB 14-1 requires the issuer of certain convertible debt instruments that may be settled in cash on conversion to separately account for the liability and equity components of the instrument in a manner that reflects the issuer’s nonconvertible debt borrowing rate. APB 14-1, which is applied retrospectively, is effective for the Operating Partnership beginning January 1, 2009. The adoption of APB 14-1 will affect the accounting for the Operating Partnership’s $650.0 million 3.85% convertible unsecured notes with a maturity date of August 2026. The Operating Partnership believes that APB 14-1 will result in a reduction to earnings of approximately $0.03 to $0.04 per share in 2009.

3. Partners’ Capital

The following tables present the changes in all of the Operating Partnership’s issued and outstanding OP Units and the changes in limited partners’ OP Units for the nine months ended September 30, 2008:

11

	2008
General and Limited Partner OP Units
General and Limited Partner OP Units outstanding at January 1,	287,974,981
Issued to General Partner:
Conversion of Series E Preference Units	26,148
Conversion of Series H Preference Units	1,448
Exercise of EQR options	621,192
Employee Share Purchase Plan	149,832
Restricted EQR share grants, net	478,802
Issued to Limited Partners:
Issuance – Consolidations	19,017
OP Units Other:
Repurchased and retired	(171,161)
General and Limited Partner OP Units outstanding at September 30,	289,100,259
Limited Partner OP Units
Limited Partner OP Units outstanding at January 1,	18,420,320
Limited Partner OP Units issued through consolidations	19,017
Conversion of Limited Partner OP Units to EQR Common Shares	(1,361,962)
Limited Partner OP Units outstanding at September 30,	17,077,375
Limited Partner OP Units Ownership Interest in Operating Partnership	5.9%
Limited Partner OP Units Issued:
Consolidations – per unit	$44.64
Consolidations – valuation	$0.8 million

During the nine months ended September 30, 2008, the Company repurchased 171,161 of its Common Shares at an average price of $36.78 per share for total consideration of $6.3 million. These shares were retired subsequent to the repurchases. Concurrent with these transactions, the Operating Partnership repurchased and retired 171,161 OP Units previously issued to EQR. Of the total shares repurchased, 71,161 shares were repurchased from employees at an average price of $38.25 per share (the average of the then current market prices) to cover the minimum statutory tax withholding obligations related to the vesting of employees’ restricted shares. The remaining 100,000 shares were repurchased in the open market at an average price of $35.74 per share. The Company also funded $4.6 million in January 2008 for the settlement of 125,000 Common Shares that were repurchased in December 2007 and recorded as other liabilities at December 31, 2007. EQR has authorization to repurchase an additional $469.3 million of its shares as of September 30, 2008.

The Limited Partners of the Operating Partnership as of September 30, 2008 include various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units. Subject to certain restrictions, the Limited Partners may exchange their OP Units for EQR Common Shares on a one-for-one basis.

EQR contributes all net proceeds from its various equity offerings (including proceeds from exercise of options for EQR Common Shares) to the Operating Partnership. In return for those contributions, EQR receives a number of OP Units in ERPOP equal to the number of Common Shares it has issued in the equity offering (or in the case of a preferred equity offering, a number of preference units in ERPOP equal in number and having the same terms as the preferred shares issued in the equity offering).

The following table presents the Operating Partnership’s issued and outstanding “Preference Units” as of September 30, 2008 and December 31, 2007:

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					Amounts in thousands
	Redemption Date (1) (2)	Conversion Rate (2)	Annual Dividend per Unit (3)		September 30, 2008		December 31, 2007
Preference Units:
7.00% Series E Cumulative Convertible Preference Units; liquidation value $25 per unit; 338,616 and 362,116 units issued and outstanding at September 30, 2008 and December 31, 2007, respectively	11/1/98	1.1128	$	1.75	$	8,465	$	9,053
7.00% Series H Cumulative Convertible Preference Units; liquidation value $25 per unit; 23,359 and 24,359 units issued and outstanding at September 30, 2008 and December 31, 2007, respectively	6/30/98	1.4480	$	1.75		584		609
8.29% Series K Cumulative Redeemable Preference Units; liquidation value $50 per unit; 1,000,000 units issued and outstanding at September 30, 2008 and December 31, 2007	12/10/26	N/A	$	4.145		50,000		50,000
6.48% Series N Cumulative Redeemable Preference Units; liquidation value $250 per unit; 600,000 units issued and outstanding at September 30, 2008 and December 31, 2007 (4)	6/19/08	N/A	$	16.20		150,000		150,000
					$	209,049	$	209,662

(1) On or after the redemption date, redeemable preference units (Series K and N) may be redeemed for cash at the option of the Operating Partnership, in whole or in part, at a redemption price equal to the liquidation price per unit, plus accrued and unpaid distributions, if any, in conjunction with the concurrent redemption of the corresponding EQR Preferred Shares.

(2) On or after the redemption date, convertible preference units (Series E & H) may be redeemed under certain circumstances at the option of the Operating Partnership for cash (in the case of Series E) or OP Units (in the case of Series H), in whole or in part, at various redemption prices per unit based upon the contractual conversion rate, plus accrued and unpaid distributions, if any, in conjunction with the concurrent redemption/conversion of the corresponding EQR Preferred Shares.

(3) Dividends on all series of Preference Units are payable quarterly at various pay dates. The dividend listed for Series N is a Preference Unit rate and the equivalent depositary unit annual dividend is $1.62 per unit.

(4) The Series N Preference Units have a corresponding depositary unit that consists of ten times the number of units and one-tenth the liquidation value and dividend per unit.

The following table presents the Operating Partnership’s issued and outstanding Junior Convertible Preference Units (the “Junior Preference Units”) as of September 30, 2008 and December 31, 2007:

					Amounts in thousands
	Redemption Date (2)	Conversion Rate (2)	Annual Dividend per Unit (1)		September 30, 2008		December 31, 2007
Junior Preference Units:
Series B Junior Convertible Preference Units; liquidation value $25 per unit; 7,367 units issued and outstanding at September 30, 2008 and December 31, 2007	7/29/09	1.020408	$	2.00	$	184	$	184
					$	184	$	184

(1) Dividends on the Junior Preference Units are payable quarterly at various pay dates.

(2) On or after the tenth anniversary of the issuance (the “Redemption Date”), the Series B Junior Preference Units may be converted into OP Units at the option of the Operating Partnership based on the contractual conversion rate. Prior to the Redemption Date, the holders may elect to convert the Series B Junior Preference Units to OP Units under certain circumstances based on the contractual conversion rate. The contractual rate is based upon a ratio dependent upon the closing price of EQR’s Common Shares.

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4. Real Estate

The following table summarizes the carrying amounts for investment in real estate (at cost) as of September 30, 2008 and December 31, 2007 (amounts in thousands):

	September 30,   2008		December 31,   2007
Land	$	3,653,808	$	3,607,305
Depreciable property:
Buildings and improvements		12,715,349		12,665,706
Furniture, fixtures and equipment		1,045,250		890,975
Projects under development:
Land		186,970		225,960
Construction-in-progress		665,627		602,570
Land held for development:
Land		296,474		296,129
Construction-in-progress		70,348		44,705
Investment in real estate		18,633,826		18,333,350
Accumulated depreciation		(3,422,371)		(3,170,125)
Investment in real estate, net	$	15,211,455	$	15,163,225

During the nine months ended September 30, 2008, the Operating Partnership acquired the entire equity interest in the following from unaffiliated parties (purchase price in thousands):

	Properties	Units	Purchase     Price
Rental Properties	6	1,837	$	336,863
Uncompleted Developments	-	-		31,705
Total	6	1,837	$	368,568

The Operating Partnership also acquired all of its partners’ interests in one partially owned property containing 144 units for $5.9 million and two partially owned land parcels for $1.6 million. In addition, the Company made an additional payment of $1.3 million related to an April 2006 acquisition of a partner’s interest in a now wholly-owned property, partially funded through the issuance of 19,017 OP Units valued at $0.8 million.

During the nine months ended September 30, 2008, the Operating Partnership disposed of the following to unaffiliated parties (sales price in thousands):

	Properties/     Parcels	Units	Sales Price
Rental Properties	34	8,795	$	806,999
Condominium Conversion Properties	3	98		21,644
Land Parcel (one)	-	-		3,300
Total	37	8,893	$	831,943

The Operating Partnership recognized a net gain on sales of discontinued operations and a net gain on sales of land parcels of approximately $365.1 million and $3.0 million, respectively, on the above sales.

5. Commitments to Acquire/Dispose of Real Estate

As of October 30, 2008, the Operating Partnership had entered into separate agreements to acquire the following (purchase price in thousands):

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	Properties/     Parcels	Units	Purchase     Price
Operating Properties	2	482	$	58,779
Land Parcels	2	-		42,650
Total	4	482	$	101,429

As of October 30, 2008, in addition to the properties that were subsequently disposed of as discussed in Note 16, the Operating Partnership had entered into separate agreements to dispose of the following (sales price in thousands):

	Properties	Units	Sales Price
Operating Properties:
Wholly Owned	3	731	$	46,750
Partially Owned – Unconsolidated	2	466		27,025
Total Operating Properties	5	1,197	$	73,775

The closings of these pending transactions are subject to certain conditions and restrictions, therefore, there can be no assurance that these transactions will be consummated or that the final terms will not differ in material respects from those summarized in the preceding paragraphs.

6. Investments in Partially Owned Entities

The Operating Partnership has co-invested in various properties with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated). The following table summarizes the Operating Partnership’s investments in partially owned entities as of September 30, 2008 (amounts in thousands except for project and unit amounts):

	Consolidated										Unconsolidated
	Development Projects
	Held for and/or Under     Development		Completed, Not     Stabilized (4)		Completed and     Stabilized		Other		Total		Institutional     Joint Ventures
Total projects (1)		-		2		5		21		28		44
Total units (1)		-		410		1,405		3,894		5,709		10,446
Debt – Secured (2):
EQR Ownership (3)	$	467,172	$	75,867	$	141,206	$	288,976	$	973,221	$	121,200
Minority Ownership		-		-		-		13,321		13,321		363,600
Total (at 100%)	$	467,172	$	75,867	$	141,206	$	302,297	$	986,542	$	484,800

(1) Project and unit counts exclude all uncompleted development projects until those projects are substantially completed.

(2) All debt is non-recourse to the Operating Partnership with the exception of $106.0 million in mortgage bonds on various development projects.

(3) Represents the Operating Partnership’s current economic ownership interest.

(4) Projects included here are substantially complete. However, they may still require additional exterior and interior work for all units to be available for leasing.

7. Deposits – Restricted

The following table presents the Operating Partnership’s restricted deposits as of September 30, 2008 and December 31, 2007 (amounts in thousands):

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	September 30, 2008		December 31, 2007
Tax–deferred (1031) exchange proceeds	$	232,581	$	63,795
Earnest money on pending acquisitions		2,950		3,050
Restricted deposits on debt (1)		105,101		133,491
Resident security and utility deposits		41,689		39,889
Other		13,337		13,051
Totals	$	395,658	$	253,276

(1) Primarily represents amounts held in escrow by the lender and released as draw requests are made on fully funded development mortgage loans.

8. Mortgage Notes Payable

As of September 30, 2008, the Operating Partnership had outstanding mortgage debt of approximately $4.5 billion.

During the nine months ended September 30, 2008, the Operating Partnership:

• Repaid $378.7 million of mortgage loans;

• Assumed $24.9 million of mortgage debt on an uncompleted development property in connection with its acquisition;

• Obtained $500.0 million of mortgage loan proceeds through the issuance of an 11.5 year cross-collateralized loan with a fixed stated interest rate for 10.5 years at 5.19% secured by 13 properties;

• Obtained $550.0 million of mortgage loan proceeds through the issuance of an 11.5 year cross-collateralized loan with a fixed stated interest rate for 10.5 years at approximately 6% secured by 15 properties; and

• Obtained an additional $192.4 million of new mortgage loans primarily on development properties.

The Operating Partnership recorded approximately $41,000 and $0.1 million of prepayment penalties and write-offs of unamortized deferred financing costs, respectively, as additional interest related to debt extinguishment of mortgages during the nine months ended September 30, 2008.

As of September 30, 2008, scheduled maturities for the Operating Partnership’s outstanding mortgage indebtedness were at various dates through September 1, 2048. At September 30, 2008, the interest rate range on the Operating Partnership’s mortgage debt was 1.90% to 12.465%. During the nine months ended September 30, 2008, the weighted average interest rate on the Operating Partnership’s mortgage debt was 5.19%.

9. Notes

As of September 30, 2008, the Operating Partnership had outstanding unsecured notes of approximately $5.6 billion.

During the quarter ended September 30, 2008, the Operating Partnership repurchased $28.5 million of its 4.75% fixed rate public notes due June 15, 2009 at a discount to par of approximately 0.9% and recognized debt extinguishment gains of $0.3 million and wrote-off approximately $45,000 of unamortized deferred financing costs. As of September 30, 2008, a transaction to repurchase $11.5 million of the $28.5 million notes had not yet settled and is recorded as other liabilities on the consolidated balance sheets. See Note 16 in the Notes to Consolidated Financial Statements for a discussion of additional repurchases made subsequent to September 30, 2008.

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As of September 30, 2008, scheduled maturities for the Operating Partnership’s outstanding notes were at various dates through 2029. At September 30, 2008, the interest rate range on the Operating Partnership’s notes was 2.99% to 7.57%. During the nine months ended September 30, 2008, the weighted average interest rate on the Operating Partnership’s notes was 5.47%.

10. Lines of Credit

The Operating Partnership has a $1.5 billion unsecured revolving credit facility maturing on February 28, 2012, with the ability to increase available borrowings by an additional $500.0 million by adding additional banks to the facility or obtaining the agreement of existing banks to increase their commitments. Advances under the credit facility bear interest at variable rates based upon LIBOR at various interest periods plus a spread dependent upon the Operating Partnership’s credit rating or based on bids received from the lending group. EQR has guaranteed the Operating Partnership’s credit facility up to the maximum amount and for the full term of the facility.

During the nine months ended September 30, 2008, one of the providers of the Operating Partnership’s unsecured revolving credit facility declared bankruptcy and as a result, the availability of a portion of the credit facility is uncertain and likely not available. Under the existing terms of the credit facility, the provider’s share is up to $75.0 million of potential borrowings. If the Operating Partnership is unable to draw upon the provider’s portion of the credit facility, the Operating Partnership’s unsecured revolving credit facility would potentially be reduced to $1.425 billion of potential borrowings. The Operating Partnership is currently negotiating with other banks to replace this provider in the credit facility. The obligation to fund by all of the other providers has not changed.

As of September 30, 2008, the amount available on the credit facility was $1.34 billion (net of $84.1 million which was restricted/dedicated to support letters of credit and net of the $75.0 million discussed above). During the nine months ended September 30, 2008, the weighted average interest rate under the credit facility was 4.29%.

11. Derivative and Other Fair Value Instruments

The following table summarizes the consolidated derivative instruments at September 30, 2008 (dollar amounts are in thousands):

	Fair Value     Hedges (1)		Forward Starting     Swaps (2)		Development     Cash Flow Hedges (3)
Current Notional Balance	$	385,693	$	300,000	$	235,690
Lowest Possible Notional	$	385,693	$	300,000	$	48,126
Highest Possible Notional	$	387,694	$	300,000	$	375,008
Lowest Interest Rate		3.245%		4.573%		4.059%
Highest Interest Rate		4.800%		5.059%		6.000%
Earliest Maturity Date		2009		2019		2009
Latest Maturity Date		2012		2019		2011
Estimated Asset (Liability) Fair Value	$	3,688	$	(6,301)	$	(2,236)
(1)  Fair Value Hedges – Converts outstanding fixed rate debt to a floating interest rate. (2)  Forward Starting Swaps – Designed to partially fix the interest rate in advance of a planned future debt issuance. (3)  Development Cash Flow Hedges – Converts outstanding floating rate debt to a fixed interest rate.

On September 30, 2008, the net derivative instruments were reported at their fair value as other liabilities of approximately $8.7 million and other assets of $3.9 million. As of September 30, 2008, there were approximately $27.0 million in deferred losses, net, included in accumulated other comprehensive loss. Based on the estimated fair values of the net derivative instruments at September 30, 2008, the Operating Partnership may recognize an estimated $5.5 million of accumulated other comprehensive loss as additional interest expense during the twelve months ending September 30, 2009.

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In February 2008, the Operating Partnership paid approximately $13.2 million to terminate three forward starting swaps in conjunction with the issuance of a $500.0 million 11.5 year mortgage loan. The entire amount has been deferred as a component of accumulated other comprehensive loss and will be recognized as an increase to interest expense over the first ten years of the mortgage loan.

SFAS No. 157 establishes a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three levels are defined as follows:

• Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

• Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The Operating Partnership’s derivative positions are valued using models developed by the respective counterparty as well as models developed internally by the Operating Partnership that use as their basis readily observable market parameters (such as forward yield curves and credit default swap data) and are classified within Level 2 of the valuation hierarchy. In addition, employee holdings other than EQR Common Shares within the supplemental executive retirement plan (the “SERP”) have a fair value of $58.6 million as of September 30, 2008 and are included in other assets and other liabilities on the consolidated balance sheet. These SERP investments are valued using quoted market prices for identical assets and are classified within Level 1 of the valuation hierarchy.

12. Earnings Per OP Unit

The following tables set forth the computation of net income per OP Unit – basic and net income per OP Unit – diluted (amounts in thousands except per OP Unit amounts):

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	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
Numerator for net income per OP Unit – basic and diluted:
Income from continuing operations	$	106,091	$	38,612	$	38,496	$	17,175
Allocation to Preference Units		(10,887)		(19,157)		(3,628)		(4,317)
Allocation to Preference Interests and Junior Preference Units		(11)		(437)		(4)		(3)
Allocation to premium on redemption of Preference Units		-		(6,144)		-		(6,144)
Income from continuing operations available to OP Units		95,193		12,874		34,864		6,711
Discontinued operations, net		374,344		885,144		151,041		471,404
Numerator for net income per OP Unit – basic and diluted	$	469,537	$	898,018	$	185,905	$	478,115
Denominator for net income per OP Unit – basic and diluted:
Denominator for net income per OP Unit – basic		287,422		301,987		287,743		290,977
Effect of dilutive securities:
Dilution for OP Units issuable upon assumed exercise/vesting of EQR’s share options/restricted shares		2,845		4,065		3,052		3,354
Denominator for net income per OP Unit – diluted		290,267		306,052		290,795		294,331
Net income per OP Unit – basic	$	1.63	$	2.97	$	0.65	$	1.64
Net income per OP Unit – diluted	$	1.62	$	2.93	$	0.64	$	1.62
Net income per OP Unit – basic:
Income from continuing operations available to OP Units	$	0.331	$	0.042	$	0.121	$	0.023
Discontinued operations, net		1.303		2.931		0.525		1.621
Net income per OP Unit – basic	$	1.634	$	2.973	$	0.646	$	1.644
Net income per OP Unit – diluted:
Income from continuing operations available to OP Units	$	0.328	$	0.042	$	0.120	$	0.022
Discontinued operations, net		1.290		2.892		0.519		1.602
Net income per OP Unit – diluted	$	1.618	$	2.934	$	0.639	$	1.624

Convertible preference interests/units that could be converted into 432,445 and 713,604 weighted average Common Shares (which would be contributed to the Operating Partnership in exchange for OP Units) for the nine months ended September 30, 2008 and 2007, respectively, and 419,822 and 488,324 weighted average Common Shares for the quarters ended September 30, 2008 and 2007, respectively, were outstanding but were not included in the computation of diluted earnings per OP Unit because the effects would be anti-dilutive. In addition, the effect of the Common Shares/OP Units that could ultimately be issued upon the conversion/exchange of the Operating Partnership’s $650.0 million exchangeable senior notes was not included in the computation of diluted earnings per OP Unit because the effects would be anti-dilutive.

13. Discontinued Operations

The Operating Partnership has presented separately as discontinued operations in all periods the results of operations for all consolidated assets disposed of on or after January 1, 2002 (the date of adoption of SFAS No. 144), all operations related to active condominium conversion properties effective upon their respective transfer into a TRS and all properties held for sale, if any.

The components of discontinued operations are outlined below and include the results of operations for the respective periods that the Operating Partnership owned such assets during the nine months and quarters ended September 30, 2008 and 2007 (amounts in thousands).

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	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
REVENUES
Rental income	$	39,722	$	168,232	$	6,597	$	39,857
Total revenues		39,722		168,232		6,597		39,857
EXPENSES (1)
Property and maintenance		16,289		58,158		3,908		15,312
Real estate taxes and insurance		5,312		22,208		756		5,252
Property management		(11)		287		18		23
Depreciation		10,001		45,688		1,605		10,307
General and administrative		24		14		7		4
Impairment		56		-		-		-
Total expenses		31,671		126,355		6,294		30,898
Discontinued operating income		8,051		41,877		303		8,959
Interest and other income		252		185		126		43
Interest (2):
Expense incurred, net		(29)		(3,725)		(2)		(746)
Amortization of deferred financing costs		-		(1,667)		-		(5)
Income and other tax benefit (expense)		1,018		984		359		1,166
Discontinued operations		9,292		37,654		786		9,417
Net gain on sales of discontinued operations		365,052		847,490		150,255		461,987
Discontinued operations, net	$	374,344	$	885,144	$	151,041	$	471,404

(1) Includes expenses paid in the current period for properties sold or held for sale in prior periods related to the Operating Partnership’s period of ownership.

(2) Includes only interest expense specific to secured mortgage notes payable for properties sold and/or held for sale.

For the properties sold and/or held for sale during the nine months ended September 30, 2008 (excluding condominium conversion properties), the investment in real estate, net of accumulated depreciation balance at December 31, 2007 was $457.6 million.

The net real estate basis of the Operating Partnership’s active condominium conversion properties owned by the TRS and included in discontinued operations (excludes the Operating Partnership’s halted conversions as they are now held for use), which were included in investment in real estate, net in the consolidated balance sheets, was $39.7 million and $47.5 million at September 30, 2008 and December 31, 2007, respectively.

14. Commitments and Contingencies

The Operating Partnership, as an owner of real estate, is subject to various Federal, state and local environmental laws. Compliance by the Operating Partnership with existing laws has not had a material adverse effect on the Operating Partnership. However, the Operating Partnership cannot predict the impact of new or changed laws or regulations on its current properties or on properties that it may acquire in the future.

The Operating Partnership is party to a housing discrimination lawsuit brought by a non-profit civil rights organization in April 2006 in the U.S. District Court for the District of Maryland. The suit alleges that the Operating Partnership designed and built approximately 300 of its properties in violation of the accessibility requirements of the Fair Housing Act and Americans with Disabilities Act. The suit seeks actual and punitive damages, injunctive relief (including modification of non-compliant properties), costs and attorneys’ fees. The Operating Partnership believes it has a number of viable defenses, including that a majority of the named properties were completed before the operative dates of the statutes in question and/or were not designed or

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built by the Operating Partnership. Accordingly, the Operating Partnership is defending the suit vigorously. Due to the pendency of the Operating Partnership’s defenses and the uncertainty of many other critical factual and legal issues, it is not possible to determine or predict the outcome of the suit and as a result, no amounts have been accrued at September 30, 2008. While no assurances can be given, the Operating Partnership does not believe that the suit, if adversely determined, would have a material adverse effect on the Operating Partnership.

The Operating Partnership does not believe there is any other litigation pending or threatened against it that, individually or in the aggregate, reasonably may be expected to have a material adverse effect on the Operating Partnership.

The Operating Partnership has established a reserve and recorded a corresponding reduction to its net gain on sales of discontinued operations related to potential liabilities associated with its condominium conversion activities. The reserve covers potential product liability related to each conversion. The Operating Partnership periodically assesses the adequacy of the reserve and makes adjustments as necessary. During the nine months ended September 30, 2008, the Operating Partnership recorded additional reserves of approximately $0.3 million for current projects and $3.2 million for various projects sold prior to 2008 and paid approximately $0.3 million in settlements. As a result, the Operating Partnership had total reserves of approximately $10.6 million at September 30, 2008. While no assurances can be given, the Operating Partnership does not believe that the ultimate resolution of these potential liabilities, if adversely determined, would have a material adverse effect on the Operating Partnership.

As of September 30, 2008, the Operating Partnership has 10 projects totaling 3,568 units in various stages of development with estimated completion dates ranging through June 30, 2011. Some of the projects are developed solely by the Operating Partnership, while others are co-developed with various third party development partners. The development venture agreements with partners are primarily deal-specific, with differing terms regarding profit-sharing, equity contributions, returns on investment, buy-sell agreements and other customary provisions. The partner is most often the “general” or “managing” partner of the development venture. The typical buy-sell arrangements contain appraisal rights and provisions that provide the right, but not the obligation, for the Operating Partnership to acquire the partner’s interest in the project at fair market value upon the expiration of a negotiated time period (typically two to five years after substantial completion of the project). However, the buy-sell provisions with one partner covering three projects does require the Operating Partnership to purchase the partner’s interest in the projects at fair market value five years following the receipt of the final certificate of occupancy on the last developed property (in Q1 2009). Based on current estimates, the ultimate payment to the partner, if any, will not be material to the Operating Partnership’s financial position and liquidity.

15. Reportable Segments

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by senior management. Senior management decides how resources are allocated and assesses performance on a monthly basis.

The Operating Partnership’s primary business is owning, managing, and operating multifamily residential properties, which include the generation of rental and other related income through the leasing of apartment units to residents. Senior management evaluates the performance of each of our apartment communities individually and geographically, and both on a same store and non-same store basis; however, each of our apartment communities generally has similar economic characteristics, residents, products and services. The Operating Partnership’s operating segments have been aggregated by geography in a manner identical to that which is provided to its chief operating decision maker.

The Operating Partnership’s fee and asset management, development (including FIN No. 46 partially owned properties), condominium conversion and corporate housing (Equity Corporate Housing or “ECH”)

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activities are immaterial and do not individually meet the threshold requirements of a reportable segment as provided for in SFAS No. 131 and as such, have been aggregated in the tables presented below.

All revenues are from external customers and there is no customer who contributed 10% or more of the Operating Partnership’s total revenues during the nine months and quarters ended September 30, 2008 and 2007, respectively.

The primary financial measure for the Operating Partnership’s rental real estate segment is net operating income (“NOI”), which represents rental income less: 1) property and maintenance expense; 2) real estate taxes and insurance expense; and 3) property management expense (all as reflected in the accompanying consolidated statements of operations). The Operating Partnership believes that NOI is helpful to investors as a supplemental measure of the operating performance of a real estate company because it is a direct measure of the actual operating results of the Operating Partnership’s apartment communities. Current year NOI is compared to prior year NOI and current year budgeted NOI as a measure of financial performance. The following tables present NOI for each segment from our rental real estate specific to continuing operations for the nine months and quarters ended September 30, 2008 and 2007, respectively, as well as total assets at September 30, 2008 (amounts in thousands):

	Nine Months Ended September 30, 2008
	Northeast		Northwest		Southeast		Southwest		Other (3)		Total
Rental income:
Same store (1)	$	392,167	$	283,265	$	287,688	$	345,437	$	-	$	1,308,557
Non-same store/other (2) (3)		64,486		22,018		47,640		37,954		86,166		258,264
Total rental income		456,653		305,283		335,328		383,391		86,166		1,566,821
Operating expenses:
Same store (1)		142,846		98,521		118,167		118,536		-		478,070
Non-same store/other (2) (3)		26,638		9,339		19,722		20,534		77,458		153,691
Total operating expenses		169,484		107,860		137,889		139,070		77,458		631,761
NOI:
Same store (1)		249,321		184,744		169,521		226,901		-		830,487
Non-same store/other (2) (3)		37,848		12,679		27,918		17,420		8,708		104,573
Total NOI	$	287,169	$	197,423	$	197,439	$	244,321	$	8,708	$	935,060
Total assets	$	4,982,980	$	2,674,484	$	3,074,941	$	3,171,281	$	2,463,638	$	16,367,324

(1) Same store includes properties owned for all of both periods ending September 30, 2008 and September 30, 2007 which represented 115,713 units.

(2) Non-same store includes properties acquired after January 1, 2007.

(3) Other includes ECH, development, condominium conversion overhead of $2.1 million and other corporate operations. Also reflects a $10.5 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.

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	Nine Months Ended September 30, 2007
	Northeast		Northwest		Southeast		Southwest		Other (3)		Total
Rental income:
Same store (1)	$	375,618	$	264,133	$	286,679	$	337,052	$	-	$	1,263,482
Non-same store/other (2) (3)		29,768		10,430		35,604		24,016		76,741		176,559
Total rental income		405,386		274,563		322,283		361,068		76,741		1,440,041
Operating expenses:
Same store (1)		138,401		96,447		116,481		116,752		-		468,081
Non-same store/other (2) (3)		15,545		4,437		13,603		13,032		82,369		128,986
Total operating expenses		153,946		100,884		130,084		129,784		82,369		597,067
NOI:
Same store (1)		237,217		167,686		170,198		220,300		-		795,401
Non-same store/other (2) (3)		14,223		5,993		22,001		10,984		(5,628)		47,573
Total NOI	$	251,440	$	173,679	$	192,199	$	231,284	$	(5,628)	$	842,974

(1) Same store includes properties owned for all of both periods ending September 30, 2008 and September 30, 2007 which represented 115,713 units.

(2) Non-same store includes properties acquired after January 1, 2007.

(3) Other includes ECH, development, condominium conversion overhead of $3.7 million and other corporate operations. Also reflects a $13.0 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.

	Quarter Ended September 30, 2008
	Northeast		Northwest		Southeast		Southwest		Other (3)		Total
Rental income:
Same store (1)	$	136,042	$	101,352	$	108,275	$	121,141	$	-	$	466,810
Non-same store/other (2) (3)		22,593		2,897		4,655		7,832		31,145		69,122
Total rental income		158,635		104,249		112,930		128,973		31,145		535,932
Operating expenses:
Same store (1)		48,451		35,530		44,799		42,864		-		171,644
Non-same store/other (2) (3)		7,985		1,356		2,136		4,492		28,050		44,019
Total operating expenses		56,436		36,886		46,935		47,356		28,050		215,663
NOI:
Same store (1)		87,591		65,822		63,476		78,277		-		295,166
Non-same store/other (2) (3)		14,608		1,541		2,519		3,340		3,095		25,103
Total NOI	$	102,199	$	67,363	$	65,995	$	81,617	$	3,095	$	320,269

(1) Same store includes properties owned for all of both quarters ending September 30, 2008 and September 30, 2007 which represented 122,380 units.

(2) Non-same store includes properties acquired after July 1, 2007.

(3) Other includes ECH, development, condominium conversion overhead of $0.7 million and other corporate operations. Also reflects a $3.8 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.

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	Quarter Ended September 30, 2007
	Northeast		Northwest		Southeast		Southwest		Other (3)		Total
Rental income:
Same store (1)	$	129,824	$	94,605	$	107,898	$	118,930	$	-	$	451,257
Non-same store/other (2) (3)		10,671		1,595		460		4,742		30,143		47,611
Total rental income		140,495		96,200		108,358		123,672		30,143		498,868
Operating expenses:
Same store (1)		46,395		34,941		44,206		41,729		-		167,271
Non-same store/other (2) (3)		4,588		691		227		3,644		27,204		36,354
Total operating expenses		50,983		35,632		44,433		45,373		27,204		203,625
NOI:
Same store (1)		83,429		59,664		63,692		77,201		-		283,986
Non-same store/other (2) (3)		6,083		904		233		1,098		2,939		11,257
Total NOI	$	89,512	$	60,568	$	63,925	$	78,299	$	2,939	$	295,243

(1) Same store includes properties owned for all of both quarters ending September 30, 2008 and September 30, 2007 which represented 122,380 units.

(2) Non-same store includes properties acquired after July 1, 2007.

(3) Other includes ECH, development, condominium conversion overhead of $1.3 million and other corporate operations. Also reflects a $4.4 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.

Note: Markets included in the above geographic segments are as follows:

(a) Northeast – New England (excluding Boston), Boston, New York Metro, DC Northern Virginia and Suburban Maryland.

(b) Northwest – Central Valley, Denver, Portland, San Francisco Bay Area and Seattle/Tacoma.

(c) Southeast – Atlanta, Jacksonville, Orlando, Raleigh/Durham, South Florida and Tampa/Ft. Myers.

(d) Southwest – Albuquerque, Dallas/Ft. Worth, Inland Empire, Los Angeles, Minneapolis/St. Paul, Orange County, Phoenix, San Diego and Tulsa.

The following table presents a reconciliation of NOI from our rental real estate specific to continuing operations for the nine months and quarters ended September 30, 2008 and 2007, respectively (amounts in thousands):

	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
Rental income	$	1,566,821	$	1,440,041	$	535,932	$	498,868
Property and maintenance expense		(409,755)		(378,586)		(141,555)		(132,162)
Real estate taxes and insurance expense		(162,470)		(149,521)		(55,206)		(49,765)
Property management expense		(59,536)		(68,960)		(18,902)		(21,698)
Total operating expenses		(631,761)		(597,067)		(215,663)		(203,625)
Net operating income	$	935,060	$	842,974	$	320,269	$	295,243

16. Subsequent Events/Other

Subsequent Events

Subsequent to September 30, 2008 and through October 30, 2008, the Operating Partnership:

• Sold two apartment properties consisting of 278 units for $27.8 million (excluding condominium units);

• Repaid $21.1 million of mortgage bonds; and

• Repurchased in excess of $100.0 million of its unsecured notes on the open market.

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Other

The Operating Partnership incurred impairment losses of approximately $2.9 million and $1.0 million (including discontinued operations) for the nine months ended September 30, 2008 and 2007, respectively, related to the write-off of various pursuit and out-of-pocket costs for terminated acquisition, disposition (including halted condominium conversions) and development transactions.

During the nine months ended September 30, 2008, the Operating Partnership received insurance/litigation settlement proceeds from the following, all of which were recorded as interest and other income:

• $1.2 million for the settlement of an eminent domain case with the state of California;

• $0.4 million for the settlement of insurance litigation claims from 2000 through 2002; and

• $0.2 million for a breach of contract claim against the former owner of a property.

In addition, the Operating Partnership recognized $0.5 million of forfeited deposits for various terminated transactions, which are included in interest and other income.

During the nine months ended September 30, 2008, the Operating Partnership recorded approximately $0.3 million and $2.2 million of additional property management expense and general and administrative expense, respectively, related to cash severance for various employees. During the nine months ended September 30, 2007, the Operating Partnership recorded approximately $0.5 million and $0.9 million of additional property management expense and general and administrative expense, respectively, related to cash severance for various employees.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

For further information including definitions for capitalized terms not defined herein, refer to the consolidated financial statements and footnotes thereto included in the Operating Partnership’s annual report on Form 10-K for the year ended December 31, 2007.

Forward-looking Statements

Forward-looking statements in this report are intended to be made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are based on current expectations, estimates, projections and assumptions made by management. While the Operating Partnership’s management believes the assumptions underlying its forward-looking statements are reasonable, such information is inherently subject to uncertainties and may involve certain risks, which could cause actual results, performance, or achievements of the Operating Partnership to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements. Many of these uncertainties and risks are difficult to predict and beyond management’s control. Forward-looking statements are not guarantees of future performance, results or events. The forward-looking statements contained herein are made as of the date hereof and the Operating Partnership undertakes no obligation to update or supplement these forward-looking statements. Factors that might cause such differences include, but are not limited to the following:

• We intend to actively acquire and develop multifamily properties for rental operations. We may underestimate the costs necessary to bring an acquired or development property up to standards established for its intended market position. Additionally, we expect that other major real estate investors with significant capital will compete with us for attractive investment opportunities or may also develop properties in markets where we focus our development efforts. This competition may increase prices for multifamily properties or decrease the price at which we expect to sell individual properties. We may not be in a position or have the opportunity in the future to make suitable property acquisitions on favorable terms. We also plan to develop more properties ourselves in addition to co-investing with our development partners. This may increase the overall level of risk associated with our developments. The total number of development units, cost of development and estimated completion dates are subject to uncertainties arising from changing economic conditions (such as the cost of labor and construction materials), competition and local government regulation;

• Sources of capital to the Operating Partnership or labor and materials required for maintenance, repair, capital expenditure or development may be more expensive than anticipated;

• Occupancy levels and market rents may be adversely affected by national and local economic and market conditions including, without limitation, new construction and excess inventory of multifamily housing, slow or negative employment growth, availability of low interest mortgages for single-family home buyers and the potential for geopolitical instability, all of which are beyond the Operating Partnership’s control; and

• Additional factors as discussed in Part I of the Annual Report on Form 10-K, particularly those under “Risk Factors”.

Forward-looking statements and related uncertainties are also included in Notes 2, 5, 11 and 14 in the Notes to Consolidated Financial Statements in this report.

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Overview

ERP Operating Limited Partnership (“ERPOP”), an Illinois limited partnership, was formed in May 1993 to conduct the multifamily residential property business of Equity Residential (“EQR”). EQR, a Maryland real estate investment trust (“REIT”) formed in March 1993, is an S&P 500 company focused on the acquisition, development and management of high quality apartment properties in top United States growth markets. EQR has elected to be taxed as a REIT.

EQR is one of the largest publicly traded real estate companies and is the largest publicly traded owner of multifamily properties (based on the aggregate market value of its outstanding Common Shares, the number of apartment units wholly owned and total revenues earned). The Operating Partnership’s corporate headquarters are located in Chicago, Illinois and the Operating Partnership also operates property management offices throughout the United States. The Operating Partnership has approximately 4,700 employees who provide real estate operations, leasing, legal, financial, accounting, acquisition, disposition, development and other support functions.

Business Objectives and Operating Strategies

The Operating Partnership seeks to maximize current income, capital appreciation of each property and the total return for its shareholders. The Operating Partnership’s strategy for accomplishing these objectives includes:

• Leveraging our size and scale in four critical ways:

• Investing in apartment communities located in strategically targeted markets, to maximize our total return on an enterprise level;

• Meeting the needs of our residents by offering a wide array of product choices and a commitment to service;

• Engaging, retaining, and attracting the best employees by providing them with the education, resources and opportunities to succeed; and

• Sharing resources, customers and best practices in property management and across the enterprise.

• Owning a highly diversified portfolio by investing in target markets defined by a combination of the following criteria:

• High barrier-to-entry (low supply);

• Strong economic predictors (high demand); and

• Attractive quality of life (high demand and retention).

• Giving residents reasons to stay with the Operating Partnership by providing a range of product options available in our diversified portfolio and by enhancing their experience through our employees and our services.

• Being open and responsive to market realities to take advantage of investment opportunities that align with our long-term vision.

Acquisition, Development and Disposition Strategies

The Operating Partnership anticipates that future property acquisitions, developments and dispositions will occur within the United States. Acquisitions and developments may be financed from various sources of capital, which may include retained cash flow, issuance of additional equity and debt securities, sales of properties, joint venture agreements and collateralized and uncollateralized borrowings. In addition, the

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Operating Partnership may acquire properties in transactions that include the issuance of limited partnership interests in the Operating Partnership (“OP Units”) as consideration for the acquired properties. Such transactions may, in certain circumstances, enable the sellers to defer, in whole or in part, the recognition of taxable income or gain that might otherwise result from the sales. In addition, ERPOP may acquire or develop multifamily properties specifically to convert directly into condominiums as well as upgrade and sell existing properties as individual condominiums. ERPOP may also acquire land parcels to hold and/or sell based on market opportunities.

When evaluating potential acquisitions, developments and dispositions, the Operating Partnership generally considers the following factors:

• strategically targeted markets;

• income levels and employment growth trends in the relevant market;

• employment and household growth and net migration of the relevant market’s population;

• barriers to entry that would limit competition (zoning laws, building permit availability, supply of undeveloped or developable real estate, local building costs and construction costs, among other factors);

• the location, construction quality, condition and design of the property;

• the current and projected cash flow of the property and the ability to increase cash flow;

• the potential for capital appreciation of the property;

• the terms of resident leases, including the potential for rent increases;

• the potential for economic growth and the tax and regulatory environment of the community in which the property is located;

• the occupancy and demand by residents for properties of a similar type in the vicinity (the overall market and submarket);

• the prospects for liquidity through sale, financing or refinancing of the property;

• the benefits of integration into existing operations;

• purchase prices and yields of available existing stabilized properties, if any;

• competition from existing multifamily properties, residential properties under development and the potential for the construction of new multifamily properties in the area; and

• opportunistic selling based on demand and price of high quality assets, including condominium conversions.

The Operating Partnership generally reinvests the proceeds received from property dispositions primarily to achieve its acquisition and development strategies and at times to fund its share repurchase activities. In addition, when feasible, the Operating Partnership may structure these transactions as tax-deferred exchanges.

Current Environment

The increasing slowdown in the economy coupled with continued job losses and/or lack of job growth leads us to be cautious regarding expected performance for the remainder of 2008 and 2009. Revenue growth has moderated in most of our major markets as the economic slowdown continues to impact existing and prospective residents. Markets with little employment loss should perform better than markets with employment issues. Should the current credit crisis continue and the economy continue to show signs of recessionary pressure, the Operating Partnership may experience a period of limited revenue growth or even declining revenues, which would adversely impact the Operating Partnership’s results of operations. The vast majority of our leases are for terms of 12 months or less. As a result, we quickly feel the impact of an economic downturn which limits our ability to raise rents on turnover units and lease renewals. Continued job losses and a lack of household formation have hampered the Operating Partnership’s ability to increase rents as it replaces vacating units with new residents. Additionally, in recent months it has become increasingly difficult to raise rents with our renewing

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residents.

The continued credit crisis has negatively impacted the availability and pricing of debt capital. During this time, the multifamily residential sector has benefited from the continued liquidity provided by Fannie Mae and Freddie Mac. A vast majority of the properties we sold this year were financed for the purchaser by one of these agencies. Furthermore, Fannie Mae and Freddie Mac have provided us with over $1.0 billion of secured mortgage financing in 2008 at attractive rates. While the Operating Partnership believes these agencies will continue to provide liquidity to our sector, should they discontinue funding the multifamily sector or fail, it would significantly reduce our access to debt capital and would significantly reduce our sales of assets. In response to the liquidity issues prevalent in the debt markets, the Operating Partnership began in early 2008 pre-funding its maturing debt obligations. We believe that cash and cash equivalents and current availability on our revolving credit facility will provide sufficient liquidity to meet our funding obligations relating to debt retirement and existing development projects through 2010. We expect that our funding obligations for the period after 2010 will be met through new borrowings, property dispositions and cash generated from operations.

Despite the challenging conditions noted above, we believe that the Operating Partnership is well-positioned to withstand the continuing economic downturn. Our properties are nearly 95% occupied, little new supply has been added to most of our markets, the single family home ownership rate continues to decline and the demographic picture is positive.

We believe we are well-positioned with a strong balance sheet and relatively low levels of debt maturities in the near term, which should allow us to take advantage of investment opportunities should distressed assets become available at significant discounts. When economic conditions improve, the short term nature of our leases should allow us to quickly realize revenue growth and improvement in our operating results.

Results of Operations

In conjunction with our business objectives and operating strategy, the Operating Partnership has continued to invest or recycle its capital investment in apartment communities located in strategically targeted markets during the nine months ended September 30, 2008. Recently, the Operating Partnership has focused more on property dispositions than acquisitions in order to preserve liquidity. In summary, we:

• Acquired $336.9 million of properties consisting of 6 properties and 1,837 units and an uncompleted development property for $31.7 million, all of which we deem to be in our strategic targeted markets; and

• Sold $807.0 million of properties consisting of 34 properties and 8,795 units, as well as 98 condominium units for $21.6 million and a vacant land parcel for $3.3 million.

The Operating Partnership’s primary financial measure for evaluating each of its apartment communities is net operating income (“NOI”). NOI represents rental income less property and maintenance expense, real estate tax and insurance expense and property management expense. The Operating Partnership believes that NOI is helpful to investors as a supplemental measure of the operating performance of a real estate company because it is a direct measure of the actual operating results of the Operating Partnership’s apartment communities.

Properties that the Operating Partnership owned for all of both of the nine months ended September 30, 2008 and 2007 (the “Nine-Month 2008 Same Store Properties”), which represented 115,713 units, and properties that the Operating Partnership owned for all of both of the quarters ended September 30, 2008 and 2007 (the “Third Quarter 2008 Same Store Properties”), which represented 122,380 units, impacted the Operating Partnership’s results of operations. Both the Nine-Month 2008 Same Store Properties and the Third Quarter 2008 Same Store Properties are discussed in the following paragraphs.

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The Operating Partnership’s acquisition, disposition and completed development activities also impacted overall results of operations for the nine months and quarters ended September 30, 2008 and 2007. The impacts of these activities are discussed in greater detail in the following paragraphs.

Comparison of the nine months ended September 30, 2008 to the nine months ended September 30, 2007

For the nine months ended September 30, 2008, income from continuing operations increased by approximately $67.5 million when compared to the nine months ended September 30, 2007. The increase in continuing operations is discussed below.

Revenues from the Nine-Month 2008 Same Store Properties increased $45.1 million primarily as a result of higher rental rates charged to residents. Expenses from the Nine-Month 2008 Same Store Properties increased $10.0 million primarily due to higher utilities, real estate taxes and payroll. The following tables provide comparative results and statistics for the Nine-Month 2008 Same Store Properties:

September YTD 2008 vs. September YTD 2007

YTD over YTD Same Store Results/Statistics

$ in Thousands (except for Average Rental Rate) – 115,713 Same Store Units

	Results						Statistics
Description	Revenues		Expenses		NOI		Average     Rental Rate (1)		Occupancy	Turnover
YTD 2008	$	1,308,557	$	478,070	$	830,487	$	1,330	94.6%	48.1%
YTD 2007	$	1,263,482	$	468,081	$	795,401	$	1,283	94.7%	48.8%
Change	$	45,075	$	9,989	$	35,086	$	47	(0.1%)	(0.7%)
Change		3.6%		2.1%		4.4%		3.7%

(1) Average rental rate is defined as total rental revenues divided by the weighted average occupied units for the period.

The following table presents a reconciliation of operating income per the consolidated statements of operations to NOI for the Nine-Month 2008 Same Store Properties:

	Nine Months Ended September 30,
	2008		2007
	(Amounts in thousands)
Operating income	$	461,528	$	388,758
Adjustments:
Non-same store operating results		(104,573)		(47,573)
Fee and asset management revenue		(7,397)		(6,937)
Fee and asset management expense		6,154		6,604
Depreciation		437,935		420,347
General and administrative		34,040		33,182
Impairment		2,800		1,020
Same store NOI	$	830,487	$	795,401

For properties that the Operating Partnership acquired prior to January 1, 2007 and expects to continue to own through December 31, 2008, the Operating Partnership anticipates the following same store results for the full year ending December 31, 2008:

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2008 Same Store Assumptions
Physical occupancy	94.5%
Revenue change	3.25%
Expense change	2.25%
NOI change	3.75%

These 2008 assumptions are based on current expectations and are forward-looking.

Non-same store operating results increased $57.0 million and consist primarily of properties acquired in calendar years 2008 and 2007 as well as operations from completed development properties and our corporate housing business.

See also Note 15 in the Notes to Consolidated Financial Statements for additional discussion regarding the Operating Partnership’s segment disclosures.

Fee and asset management revenues, net of fee and asset management expenses, increased $0.9 million primarily due to an increase in revenue earned on the management of our military housing venture at Fort Lewis as well as a decrease in asset management expenses. As of September 30, 2008 and 2007, the Operating Partnership managed 14,472 and 14,403 units, respectively, primarily for unconsolidated entities and our military housing venture at Fort Lewis.

Property management expenses from continuing operations include off-site expenses associated with the self-management of the Operating Partnership’s properties as well as management fees paid to any third party management companies. These expenses decreased by approximately $9.4 million or 13.7%. This decrease is primarily attributable to lower overall payroll-related costs as a result of a decrease in the number of properties in the Operating Partnership’s portfolio, as well as a decrease in legal and professional fees.

Depreciation expense from continuing operations, which includes depreciation on non-real estate assets, increased $17.6 million primarily as a result of additional depreciation expense on properties acquired in 2007 and 2008, as well as capital expenditures for all properties owned.

General and administrative expenses from continuing operations, which include corporate operating expenses, increased $0.9 million primarily as a result of a $1.2 million increase in severance related costs in 2008 (see Note 16) as well as a $1.7 million expense recovery recorded for the nine months ended September 30, 2007 related to a certain lawsuit in Florida, partially offset by lower overall payroll-related costs as a result of a decrease in the number of properties in the Operating Partnership’s portfolio. The Operating Partnership anticipates that general and administrative expenses will approximate $45.0 million to $46.0 million for the year ending December 31, 2008. The above assumption is based on current expectations and is forward-looking.

Impairment from continuing operations increased $1.8 million primarily as a result of an increase in the write-offs of various pursuit and out-of-pocket costs for terminated development transactions and halted condominium conversion properties during the nine months ended September 30, 2008.

Interest and other income from continuing operations decreased $1.3 million primarily as a result of a decrease in interest earned on restricted deposits, partially offset by an increase in interest earned on cash balances, insurance/litigation settlement proceeds received in 2008 and an increase in forfeited deposits and gains on debt extinguishment. The Operating Partnership anticipates that interest and other income will approximate $27.5 million to $28.5 million for the year ending December 31, 2008. The above assumption is based on current expectations and is forward-looking.

Interest expense from continuing operations, including amortization of deferred financing costs, decreased approximately $6.3 million primarily as a result of a significant reduction in debt extinguishment

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costs and write-offs of unamortized deferred financing costs in 2008 as well as lower overall effective interest rates, partially offset by higher overall debt levels outstanding due to the Company’s 2007 share repurchase activity and its pre-funding of its 2008 and 2009 debt maturities. During the nine months ended September 30, 2008, the Operating Partnership capitalized interest costs of approximately $45.1 million as compared to $30.8 million for the nine months ended September 30, 2007. This capitalization of interest primarily relates to consolidated projects under development. The effective interest cost on all indebtedness for the nine months ended September 30, 2008 was 5.54% as compared to 5.99% for the nine months ended September 30, 2007. The Operating Partnership anticipates that interest expense will approximate $480.0 million to $490.0 million for the year ending December 31, 2008. The above assumption is based on current expectations and is forward-looking.

Income and other tax expense from continuing operations increased $4.5 million primarily due to a change in the estimate of Texas state taxes and additional California state income taxes incurred and/or expected to be incurred in 2008. The Operating Partnership anticipates that income and other tax expense will approximate $5.0 million to $6.0 million for the year ending December 31, 2008. The above assumption is based on current expectations and is forward-looking.

Income from investments in unconsolidated entities decreased $0.1 million as compared to the nine months ended September 30, 2007 due to income received in 2007 from the sale of the Operating Partnership’s 7.075% ownership interest in Wellsford Park Highlands Corporation, an entity which owns a condominium development in Denver, Colorado.

Net gain on sales of unconsolidated entities decreased $2.6 million between the periods under comparison as the Operating Partnership recognized a $2.6 million gain on the sale of an unconsolidated institutional joint venture property during the nine months ended September 30, 2007.

Net gain on sales of land parcels decreased $2.3 million primarily as a result of a higher gain recognized on the sale of a vacant land parcel located in New York during the nine months ended September 30, 2007 versus the sale of vacant land located in Florida during the nine months ended September 30, 2008.

Discontinued operations, net decreased approximately $510.8 million between the periods under comparison. This decrease is primarily due to the number and mix of properties sold during the nine months ended September 30, 2008 as compared to the same period in 2007 and the operations of those properties. See Note 13 in the Notes to Consolidated Financial Statements for further discussion.

Comparison of the quarter ended September 30, 2008 to the quarter ended September 30, 2007

For the quarter ended September 30, 2008, income from continuing operations increased by approximately $21.3 million when compared to the quarter ended September 30, 2007. The increase in continuing operations is discussed below.

Revenues from the Third Quarter 2008 Same Store Properties increased $15.6 million primarily as a result of higher rental rates charged to residents. Expenses from the Third Quarter 2008 Same Store Properties increased $4.4 million primarily due to higher real estate taxes, utilities and payroll. The following tables provide comparative same store results and statistics for the Third Quarter 2008 Same Store Properties:

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Third Quarter 2008 vs. Third Quarter 2007

Quarter over Quarter Same Store Results/Statistics

$ in Thousands (except for Average Rental Rate) – 122,380 Same Store Units

	Results						Statistics
Description	Revenues		Expenses		NOI		Average     Rental Rate (1)		Occupancy	Turnover
Q3 2008	$	466,810	$	171,644	$	295,166	$	1,348	94.4%	18.6%
Q3 2007	$	451,257	$	167,271	$	283,986	$	1,305	94.3%	19.1%
Change	$	15,553	$	4,373	$	11,180	$	43	0.1%	(0.5%)
Change		3.4%		2.6%		3.9%		3.3%

(1) Average rental rate is defined as total rental revenues divided by the weighted average occupied units for the period.

The following table presents a reconciliation of operating income per the consolidated statements of operations to NOI for the Third Quarter 2008 Same Store Properties:

	Quarter Ended September 30,
	2008		2007
	(Amounts in thousands)
Operating income	$	156,570	$	138,398
Adjustments:
Non-same store operating results		(25,103)		(11,257)
Fee and asset management revenue		(2,387)		(2,234)
Fee and asset management expense		1,983		2,100
Depreciation		152,157		143,987
General and administrative		9,849		12,366
Impairment		2,097		626
Same store NOI	$	295,166	$	283,986

Non-same store operating results increased $13.8 million and consist primarily of properties acquired in calendar years 2008 and 2007 as well as operations from completed development properties and our corporate housing business.

See also Note 15 in the Notes to Consolidated Financial Statements for additional discussion regarding the Operating Partnership’s segment disclosures.

Fee and asset management revenues, net of fee and asset management expenses, increased $0.3 million during the quarter ended September 30, 2008 primarily due to an increase in revenue earned on the management of our military housing venture at Fort Lewis as well as a decrease in asset management expenses.

Property management expenses from continuing operations include off-site expenses associated with the self-management of the Operating Partnership’s properties as well as management fees paid to any third party management companies. These expenses decreased by approximately $2.8 million or 12.9%. This decrease is primarily attributable to lower overall payroll-related costs as a result of a decrease in the number of properties in the Operating Partnership’s portfolio, as well as a decrease in legal and professional fees.

Depreciation expense from continuing operations, which includes depreciation on non-real estate assets, increased $8.2 million primarily as a result of additional depreciation expense on newly acquired properties, as well as capital expenditures for all properties owned.

General and administrative expenses from continuing operations, which include corporate operating expenses, decreased $2.5 million primarily as a result of a $0.9 million decrease in severance related costs in

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2008 (see Note 16), as well as lower overall payroll-related costs.

Impairment from continuing operations increased $1.5 million primarily as a result of an increase in the write-offs of various pursuit and out-of-pocket costs for terminated development transactions and halted condominium conversion properties during the quarter ended September 30, 2008.

Interest and other income from continuing operations decreased $3.3 million primarily as a result of a significant decrease in interest earned on restricted deposits, partially offset by an increase in interest earned on cash balances and gains on debt extinguishment during the quarter ended September 30, 2008 compared to the quarter ended September 30, 2007.

Interest expense from continuing operations, including amortization of deferred financing costs, decreased approximately $7.5 million primarily due to lower overall effective interest rates, partially offset by higher overall debt levels outstanding due to the Company’s 2007 share repurchase activity and its pre-funding of its 2008 and 2009 debt maturities. During the quarter ended September 30, 2008, the Operating Partnership capitalized interest costs of approximately $15.6 million as compared to $12.9 million for the quarter ended September 30, 2007. This capitalization of interest primarily relates to consolidated projects under development. The effective interest cost on all indebtedness for the quarter ended September 30, 2008 was 5.54% as compared to 5.94% for the quarter ended September 30, 2007.

Income and other tax expense from continuing operations increased $0.5 million primarily due to an increase in California and other state income taxes, partially offset by a decrease in Texas state taxes for the quarter ended September 30, 2008.

Income from investments in unconsolidated entities decreased $0.3 million mainly due to income received during the quarter ended September 30, 2007 from the sale of the Operating Partnership’s 7.075% ownership interest in Wellsford Park Highlands Corporation, an entity which owns a condominium development in Denver, Colorado.

Net gain on sales of unconsolidated entities decreased $2.6 million between the periods under comparison as the Operating Partnership recognized a $2.6 million gain on the sale of an unconsolidated institutional joint venture property during the quarter ended September 30, 2007.

Net gain on sales of land parcels increased $2.3 million primarily due to a higher gain recognized on the sale of one vacant land parcel during the quarter ended September 30, 2008 compared to the same period in 2007 when one vacant land parcel was also sold.

Discontinued operations, net decreased approximately $320.4 million between the periods under comparison. This decrease is primarily due to the number and mix of properties sold during the quarter ended September 30, 2008 as compared to the same period in 2007 and the operations of those properties. See Note 13 in the Notes to Consolidated Financial Statements for further discussion.

Liquidity and Capital Resources

As of January 1, 2008, the Operating Partnership had approximately $50.8 million of cash and cash equivalents and $1.28 billion available under its revolving credit facility (net of $80.8 million which was restricted/dedicated to support letters of credit and not available for borrowing and net of the $139.0 million balance outstanding). After taking into effect the various transactions discussed in the following paragraphs and the net cash provided by operating activities, the Operating Partnership’s cash and cash equivalents balance at September 30, 2008 was approximately $530.1 million and the amount available on the Operating Partnership’s revolving credit facility was $1.34 billion (net of $84.1 million which was restricted/dedicated to support letters of credit and $75.0 million which had been committed by a now bankrupt financial institution and is likely not available for borrowing). The significant increase in the Operating Partnership’s cash and cash equivalents balance since December 31,

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2007 is a direct result of its decision to pre-fund its 2008 and 2009 debt maturities with the closing of a $500.0 million secured mortgage pool in March 2008 and an additional $550.0 million secured mortgage pool in August 2008. See Notes 8 and 10 in the Notes to Consolidated Financial Statements for further discussion.

During the nine months ended September 30, 2008, the Operating Partnership generated proceeds from various transactions, which included the following:

• Disposed of 34 properties and various individual condominium units, receiving net proceeds of approximately $829.1 million;

• Obtained $1.2 billion in new mortgage financing and terminated three forward starting swaps designated to hedge the first $150.0 million of one of the loan issuances, making payments of $13.2 million; and

• Issued approximately 0.8 million OP Units and received net proceeds of $21.9 million.

During the nine months ended September 30, 2008, the above proceeds were primarily utilized to:

• Invest $399.3 million primarily in development projects;

• Acquire six rental properties and one uncompleted development property, utilizing cash of $344.2 million;

• Repurchase 0.2 million OP Units and settle 0.1 million OP Units, utilizing cash of $10.9 million (see Note 3);

• Repay $130.0 million of fixed rate private notes;

• Repurchase $28.5 million of fixed rate public notes; and

• Repay $378.7 million of mortgage loans.

Depending on its analysis of market prices, economic conditions, and other opportunities for the investment of available capital, the Company may repurchase its Common Shares pursuant to its existing share repurchase program authorized by the Board of Trustees. EQR repurchased $6.3 million (171,161 shares at an average price per share of $36.78) of its Common Shares during the nine months ended September 30, 2008. Concurrent with these transactions, the Operating Partnership repurchased and retired 171,161 OP Units previously issued to EQR. As of September 30, 2008, EQR had authorization to repurchase an additional $469.3 million of its shares. The Company has no current intention to make any material repurchases. See Note 3 in the Notes to Consolidated Financial Statements for further discussion.

The Operating Partnership’s total debt summary and debt maturity schedules as of September 30, 2008 are as follows:

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Debt Summary as of September 30, 2008

(Amounts in thousands)

	Amounts (1)		% of Total	Weighted     Average Rates (1)	Weighted     Average Maturities (years)
Secured	$	4,493,886	44.5%	5.19%	8.6
Unsecured		5,607,519	55.5%	5.47%	5.7
Total	$	10,101,405	100.0%	5.35%	6.9
Fixed Rate Debt:
Secured – Conventional	$	3,283,251	32.5%	6.01%	7.2
Unsecured – Public/Private		4,845,410	48.0%	5.67%	5.9
Unsecured – Tax Exempt		111,390	1.1%	5.06%	20.6
Fixed Rate Debt		8,240,051	81.6%	5.78%	6.6
Floating Rate Debt:
Secured – Conventional		592,374	5.9%	3.89%	4.3
Secured – Tax Exempt		618,261	6.1%	2.58%	20.7
Unsecured – Public/Private		650,719	6.4%	4.02%	1.7
Unsecured – Revolving Credit Facility		-	-	4.29%	3.4
Floating Rate Debt		1,861,354	18.4%	3.50%	8.5
Total	$	10,101,405	100.0%	5.35%	6.9

(1) Net of the effect of any derivative instruments. Weighted average rates are for the nine months ended September 30, 2008.

Note: The Operating Partnership capitalized interest of approximately $45.1 million and $30.8 million during the nine months ended September 30, 2008 and 2007, respectively. The Operating Partnership capitalized interest of approximately $15.6 million and $12.9 million during the quarters ended September 30, 2008 and 2007, respectively.

Debt Maturity Schedule as of September 30, 2008

(Amounts in thousands)

Year	Fixed             Rate (1)		Floating       Rate (1)		Total		% of Total	Weighted Average Rates on Fixed Rate Debt (1)	Weighted Average Rates on Total Debt (1)
2008	$	6,313	$	10,200	$	16,513	0.2%	7.56%	5.65%
2009		425,874		519,134		945,008	9.3%	6.44%	5.16%
2010    (2)		290,192		635,409		925,601	9.2%	7.02%	4.60%
2011    (3)		1,544,508		48,665		1,593,173	15.8%	5.59%	5.63%
2012		907,930		2,889		910,819	9.0%	6.08%	6.08%
2013		566,320		-		566,320	5.6%	5.93%	5.93%
2014		517,462		-		517,462	5.1%	5.28%	5.28%
2015		355,592		-		355,592	3.5%	6.41%	6.41%
2016		1,089,314		-		1,089,314	10.8%	5.32%	5.32%
2017		803,645		456		804,101	8.0%	6.01%	6.01%
2018+		1,732,901		644,601		2,377,502	23.5%	5.85%	5.66%
Total	$	8,240,051	$	1,861,354	$	10,101,405	100.0%	5.84%	5.56%

(1) Net of the effect of any derivative instruments. Weighted average rates are as of September 30, 2008.

(2) Includes the Operating Partnership’s $500.0 million floating rate term loan facility, which matures on October 5, 2010, subject to two one-year extension options exercisable by the Operating Partnership.

(3) Includes $650.0 million of 3.85% convertible unsecured debt with a final maturity of 2026. The notes are callable by the Operating Partnership on or after August 18, 2011. The notes are putable by the holders on August 18, 2011, August 15, 2016 and August 15, 2021.

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The following table provides a summary of the Operating Partnership’s unsecured debt as of September 30, 2008:

Unsecured Debt Summary as of September 30, 2008

(Amounts in thousands)

	Coupon     Rate	Due Date		Face Amount		Unamortized Premium/ (Discount)		Net         Balance
Fixed Rate Notes:
	4.750%	06/15/09	(1)	$	271,520	$	(176)	$	271,344
	6.950%	03/02/11			300,000		2,256		302,256
	6.625%	03/15/12			400,000		(1,015)		398,985
	5.500%	10/01/12			350,000		(1,381)		348,619
	5.200%	04/01/13			400,000		(533)		399,467
	5.250%	09/15/14			500,000		(366)		499,634
	6.584%	04/13/15			300,000		(727)		299,273
	5.125%	03/15/16			500,000		(399)		499,601
	5.375%	08/01/16			400,000		(1,453)		398,547
	5.750%	06/15/17			650,000		(4,450)		645,550
	7.125%	10/15/17			150,000		(587)		149,413
	7.570%	08/15/26			140,000		-		140,000
	3.850%	08/15/26	(2)		650,000		(7,279)		642,721
Floating Rate Adjustments			(1)		(150,000)		-		(150,000)
					4,861,520		(16,110)		4,845,410
Fixed Rate Tax Exempt Notes:
	4.750%	12/15/28	(3)		35,600		-		35,600
	5.200%	06/15/29	(3)		75,790		-		75,790
					111,390		-		111,390
Floating Rate Notes:
		06/15/09	(1)		150,000		-		150,000
FAS 133 Adjustments – net			(1)		719		-		719
Term Loan Facility	L+0.50%	10/05/10	(3)(4)		500,000		-		500,000
					650,719		-		650,719
Revolving Credit Facility:	L+0.50%	02/28/12	(5)		-		-		-
Total Unsecured Debt				$	5,623,629	$	(16,110)	$	5,607,519

(1) $150.0 million in fair value interest rate swaps converts a portion of the 4.750% notes due June 15, 2009 to a floating interest rate. During the quarter ended September 30, 2008, the Operating Partnership repurchased $28.5 million of these notes at a discount to par of approximately 0.9% and recognized a gain on early debt extinguishment of $0.3 million.

(2) Convertible notes mature on August 15, 2026. The notes are callable by the Operating Partnership on or after August 18, 2011. The notes are putable by the holders on August 18, 2011, August 15, 2016 and August 15, 2021.

(3) Notes are private. All other unsecured debt is public.

(4) Represents the Operating Partnership’s $500.0 million term loan facility, which matures on October 5, 2010, subject to two one-year extension options exercisable by the Operating Partnership.

(5) As of September 30, 2008, there was no amount outstanding and approximately $1.34 billion available on the Operating Partnership’s unsecured revolving credit facility.

As of October 30, 2008, an unlimited amount of debt securities remains available for issuance by the Operating Partnership under a registration statement that became automatically effective upon filing with the SEC in June 2006 (under SEC regulations enacted in 2005, the registration statement automatically expires on June 29, 2009 and does not contain a maximum issuance amount). As of October 30, 2008, $956.5 million in equity securities remains available for issuance by EQR under a registration statement the SEC declared effective in February 1998. Per the terms of ERPOP’s partnership agreement, EQR contributes the net proceeds of all equity offerings to the capital of the Operating Partnership in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis) or preference units (on a one-for-one preferred

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share per preference unit basis).

The Operating Partnership’s “Consolidated Debt-to-Total Market Capitalization Ratio” as of September 30, 2008 is presented in the following table. The Operating Partnership calculates the equity component of its market capitalization as the sum of (i) the total outstanding OP Units at the equivalent market value of the closing price of EQR’s Common Shares on the New York Stock Exchange; (ii) the “OP Unit Equivalent” of all convertible preference units; and (iii) the liquidation value of all perpetual preference units outstanding.

Capital Structure as of September 30, 2008

(Amounts in thousands except for unit and per unit amounts)

Secured Debt			$	4,493,886	44.5%
Unsecured Debt				5,607,519	55.5%
Total Debt				10,101,405	100.0%	43.6%
OP Units		289,100,259
OP Unit Equivalents (see below)		418,153
Total outstanding at quarter-end		289,518,412
EQR Common Share Price at September 30, 2008	$	44.41
				12,857,513	98.5%
Perpetual Preference Units (see below)				200,000	1.5%
Total Equity				13,057,513	100.0%	56.4%
Total Market Capitalization			$	23,158,918		100.0%

Convertible Preference Units as of September 30, 2008

(Amounts in thousands except for unit and per unit amounts)

Series	Redemption   Date	Outstanding   Units	Liquidation   Value		Annual   Dividend Per Unit		Annual     Dividend Amount		Weighted Average Rate	Conversion   Ratio	OP Unit   Equivalents
Preference Units:
7.00% Series E	11/1/98	338,616	$	8,465	$	1.75	$	593		1.1128	376,812
7.00% Series H	6/30/98	23,359		584		1.75		41		1.4480	33,824
Junior Preference Units:
8.00% Series B	7/29/09	7,367		184		2.00		15		1.020408	7,517
Total Convertible Preference Units		369,342	$	9,233			$	649	7.03%		418,153

Perpetual Preference Units as of September 30, 2008

(Amounts in thousands except for unit and per unit amounts)

Series	Redemption   Date	Outstanding   Units	Liquidation   Value		Annual     Dividend Per Unit		Annual     Dividend Amount		Weighted Average Rate
Preference Units:
8.29% Series K	12/10/26	1,000,000	$	50,000	$	4.145	$	4,145
6.48% Series N	6/19/08	600,000		150,000		16.20		9,720
Total Perpetual Preference Units		1,600,000	$	200,000			$	13,865	6.93%

The Operating Partnership expects to meet its short-term liquidity requirements, including capital expenditures related to maintaining its existing properties and certain scheduled unsecured note and mortgage note repayments, generally through its working capital, net cash provided by operating activities and borrowings under its revolving credit facility. The Operating Partnership considers its cash provided by operating activities to be adequate to meet operating requirements and payments of distributions. The Operating Partnership also expects to meet its long-term liquidity requirements, such as scheduled unsecured

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note and mortgage debt maturities, property acquisitions, financing of construction and development activities and capital improvements through the issuance of unsecured notes and equity securities, including additional OP Units, and proceeds received from the disposition of certain properties as well as joint ventures. In addition, the Operating Partnership has significant unencumbered properties available to secure additional mortgage borrowings in the event that the public capital markets are unavailable or the cost of alternative sources of capital is too high. The fair value of and cash flow from these unencumbered properties are in excess of the requirements the Operating Partnership must maintain in order to comply with covenants under its unsecured notes and line of credit. Of the $18.6 billion in investment in real estate on the Operating Partnership’s balance sheet at September 30, 2008, $11.4 billion or 61.3%, was unencumbered.

As of October 30, 2008, the Operating Partnership’s senior debt credit ratings from Standard & Poors (“S&P”), Moody’s and Fitch are BBB+, Baa1 and A-, respectively. As of October 30, 2008, EQR’s preferred equity ratings from S&P, Moody’s and Fitch are BBB-, Baa2 and BBB+, respectively.

The Operating Partnership has a long-term revolving credit facility with available borrowings of $1.34 billion which matures in February 2012 (see Note 10 for further discussion). This facility may, among other potential uses, be used to fund property acquisitions, costs for certain properties under development and short term liquidity requirements. As of October 30, 2008, no amounts were outstanding under this facility.

See Note 16 in the Notes to Consolidated Financial Statements for discussion of the events which occurred subsequent to September 30, 2008.

Capitalization of Fixed Assets and Improvements to Real Estate

Our policy with respect to capital expenditures is generally to capitalize expenditures that improve the value of the property or extend the useful life of the component asset of the property. We track improvements to real estate in two major categories and several subcategories:

• Replacements (inside the unit). These include:

o flooring such as carpets, hardwood, vinyl, linoleum or tile;

o appliances;

o mechanical equipment such as individual furnace/air units, hot water heaters, etc;

o furniture and fixtures such as kitchen/bath cabinets, light fixtures, ceiling fans, sinks, tubs, toilets, mirrors, countertops, etc; and

o blinds/shades.

All replacements are depreciated over a five-year estimated useful life. We expense as incurred all make-ready maintenance and turnover costs such as cleaning, interior painting of individual units and the repair of any replacement item noted above.

• Building improvements (outside the unit). These include:

o roof replacement and major repairs;

o paving or major resurfacing of parking lots, curbs and sidewalks;

o amenities and common areas such as pools, exterior sports and playground equipment, lobbies, clubhouses, laundry rooms, alarm and security systems and offices;

o major building mechanical equipment systems;

o interior and exterior structural repair and exterior painting and siding;

o major landscaping and grounds improvement; and

o vehicles and office and maintenance equipment.

All building improvements are depreciated over a five to ten-year estimated useful life. We capitalize building improvements and upgrades only if the item: (i) exceeds $2,500 (selected projects must exceed $10,000); (ii) extends the useful life of the asset; and (iii) improves the value of the asset.

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For the nine months ended September 30, 2008, our actual improvements to real estate totaled approximately $131.4 million. This includes the following (amounts in thousands except for unit and per unit amounts):

Capitalized Improvements to Real Estate

For the Nine Months Ended September 30, 2008

	Total   Units (1)	Replacements		Avg.     Per Unit		Building           Improvements		Avg.   Per Unit		Total		Avg.   Per Unit
Established Properties (2)	106,135	$	29,759	$	280	$	42,088	$	397	$	71,847	$	677
New Acquisition Properties (3)	20,543		4,255		228		13,847		743		18,102		971
Other (4)	6,471		32,650				8,766				41,416
Total	133,149	$	66,664			$	64,701			$	131,365

(1) Total units – Excludes 10,446 unconsolidated units and 3,731 military housing (fee managed) units, for which capitalized improvements to real estate are self-funded and do not consolidate into the Operating Partnership’s results.

(2) Established Properties – Wholly Owned Properties acquired prior to January 1, 2006.

(3) New Acquisition Properties – Wholly Owned Properties acquired during 2006, 2007 and 2008. Per unit amounts are based on a weighted average of 18,643 units.

(4) Other – Includes properties either partially owned or sold during the period, commercial space, corporate housing and condominium conversions. Also includes $25.2 million included in replacements spent on various assets related to major renovations and repositioning of these assets.

For 2008, the Operating Partnership estimates an annual stabilized run rate of approximately $1,100 per unit of capital expenditures for its established properties. The above assumption is based on current expectations and is forward-looking.

During the nine months ended September 30, 2008, the Operating Partnership’s total non-real estate capital additions, such as computer software, computer equipment, and furniture and fixtures and leasehold improvements to the Operating Partnership’s property management offices and its corporate offices, were approximately $2.1 million. The Operating Partnership expects to fund approximately $1.7 million in additions to non-real estate property for the remainder of 2008. The above assumption is based on current expectations and is forward-looking.

Improvements to real estate and additions to non-real estate property are generally funded from net cash provided by operating activities.

Derivative Instruments

In the normal course of business, the Operating Partnership is exposed to the effect of interest rate changes. The Operating Partnership seeks to limit these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.

The Operating Partnership has a policy of only entering into contracts with major financial institutions based upon their credit ratings and other factors. When viewed in conjunction with the underlying and offsetting exposure that the derivatives are designed to hedge, the Operating Partnership has not sustained a material loss from those instruments nor does it anticipate any material adverse effect on its net income or financial position in the future from the use of derivatives it currently has in place.

See Note 11 in the Notes to Consolidated Financial Statements for additional discussion of derivative instruments at September 30, 2008.

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Other

Total distributions paid in October 2008 amounted to $142.0 million (excluding distributions on Partially Owned Properties), which included certain distributions declared during the third quarter ended September 30, 2008.

Off-Balance Sheet Arrangements and Contractual Obligations

The Operating Partnership has co-invested in various properties that are unconsolidated and accounted for under the equity method of accounting. Management does not believe these investments have a materially different impact upon the Operating Partnership’s liquidity, cash flows, capital resources, credit or market risk than its property management and ownership activities. During 2000 and 2001, the Operating Partnership entered into institutional ventures with an unaffiliated partner. At the respective closing dates, the Operating Partnership sold and/or contributed 45 properties containing 10,846 units to these ventures and retained a 25% ownership interest in the ventures. The Operating Partnership’s joint venture partner contributed cash equal to 75% of the agreed-upon equity value of the properties comprising the ventures, which was then distributed to the Operating Partnership. The Operating Partnership’s strategy with respect to these ventures was to reduce its concentration of properties in a variety of markets. The Operating Partnership sold one property consisting of 400 units during the year ended December 31, 2007.

As of September 30, 2008, the Operating Partnership has 10 projects totaling 3,568 units in various stages of development with estimated completion dates ranging through June 30, 2011. The development agreements currently in place are discussed in detail in Note 14 of the Operating Partnership’s Consolidated Financial Statements.

See also Notes 2 and 6 in the Notes to Consolidated Financial Statements for additional discussion regarding the Operating Partnership’s investments in partially owned entities.

The Operating Partnership’s contractual obligations for the next five years and thereafter have not changed materially from the amounts and disclosures included in its annual report on Form 10-K, other than as it relates to scheduled debt maturities. See the updated debt maturity schedule included in Liquidity and Capital Resources for further discussion.

Critical Accounting Policies and Estimates

The Operating Partnership has identified six significant accounting policies as critical accounting policies. These critical accounting policies are those that have the most impact on the reporting of our financial condition and those requiring significant judgments and estimates. With respect to these critical accounting policies, management believes that the application of judgments and estimates is consistently applied and produces financial information that fairly presents the results of operations for all periods presented. The six critical accounting policies are:

Impairment of Long-Lived Assets, Including Goodwill

The Operating Partnership periodically evaluates its long-lived assets, including its investments in real estate and goodwill, for indicators of permanent impairment. The judgments regarding the existence of impairment indicators are based on factors such as operational performance, market conditions, expected holding period of each asset and legal and environmental concerns. Future events could occur which would cause the Operating Partnership to conclude that impairment indicators exist and an impairment loss is warranted.

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Depreciation of Investment in Real Estate

The Operating Partnership depreciates the building component of its investment in real estate over a 30-year estimated useful life, building improvements over a 5-year to 10-year estimated useful life and both the furniture, fixtures and equipment and replacements components over a 5-year estimated useful life, all of which are judgmental determinations.

Cost Capitalization

See the Capitalization of Fixed Assets and Improvements to Real Estate section for discussion of the policy with respect to capitalization vs. expensing of fixed asset/repair and maintenance costs. In addition, the Operating Partnership capitalizes the payroll and associated costs of employees directly responsible for and who spend all of their time on the supervision of major capital and/or renovation projects. These costs are reflected on the balance sheet as an increase to depreciable property.

The Operating Partnership follows the guidance in SFAS No. 67, Accounting for Costs and Initial Rental Operations of Real Estate Projects, for all development projects and uses its professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. The Operating Partnership capitalizes interest, real estate taxes and insurance and payroll and associated costs for those individuals directly responsible for and who spend all of their time on development activities, with capitalization ceasing no later than 90 days following issuance of the certificate of occupancy. These costs are reflected on the balance sheet as construction-in-progress for each specific property. The Operating Partnership expenses as incurred all payroll costs of on-site employees working directly at our properties, except as noted above on our development properties prior to certificate of occupancy issuance and on specific major renovations at selected properties when additional incremental employees are hired.

Fair Value of Financial Instruments, Including Derivative Instruments

The Operating Partnership follows the guidance under SFAS No. 157 when valuing its financial instruments. The valuation of financial instruments under SFAS No. 107 and SFAS No. 133, as amended, requires the Operating Partnership to make estimates and judgments that affect the fair value of the instruments. The Operating Partnership, where possible, bases the fair values of its financial instruments, including its derivative instruments, on listed market prices and third party quotes. Where these are not available, the Operating Partnership bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial statements.

Revenue Recognition

Rental income attributable to residential leases is recorded on a straight-line basis, which is not materially different than if it were recorded when due from residents and recognized monthly as it was earned. Leases entered into between a resident and a property for the rental of an apartment unit are generally year-to-year, renewable upon consent of both parties on an annual or monthly basis. Fee and asset management revenue and interest income are recorded on an accrual basis.

Share-Based Compensation

The Company accounts for its share-based compensation in accordance with SFAS No. 123(R), Share-Based Payment, effective January 1, 2006, which results in compensation expense being recorded based on the fair value of the share compensation granted.

Any EQR Common Shares issued pursuant to EQR’s incentive equity compensation and employee share purchase plans will result in the Operating Partnership issuing OP Units to EQR on a one-for-one basis, with the Operating Partnership receiving the net cash proceeds of such issuances.

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The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. This model is only one method of valuing options and the Company’s use of this model should not be interpreted as an endorsement of its accuracy. Because the Company’s share options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide a reliable single measure of the fair value of its share options and the actual value of the options may be significantly different.

Funds From Operations

For the nine months ended September 30, 2008, Funds From Operations (“FFO”) available to OP Units increased by $17.0 million or 3.2%, as compared to the nine months ended September 30, 2007.

For the quarter ended September 30, 2008, FFO available to OP Units increased by $16.8 million, or 9.7%, as compared to the quarter ended September 30, 2007.

The following is a reconciliation of net income to FFO available to OP Units for the nine months and quarters ended September 30, 2008 and 2007:

Funds From Operations

(Amounts in thousands)

(Unaudited)

	Nine Months Ended September 30,				Quarter Ended September 30,
	2008		2007		2008		2007
Net income	$	480,435	$	923,756	$	189,537	$	488,579
Adjustments:
Depreciation		437,935		420,347		152,157		143,987
Depreciation – Non-real estate additions		(6,057)		(6,137)		(1,976)		(1,964)
Depreciation – Partially Owned and Unconsolidated Properties		3,103		3,262		1,063		1,181
Net gain on sales of unconsolidated entities		-		(2,629)		-		(2,629)
Discontinued operations:
Depreciation		10,001		45,688		1,605		10,307
Net gain on sales of discontinued operations		(365,052)		(847,490)		(150,255)		(461,987)
Net incremental (loss) gain on sales of condominium units		(2,643)		18,773		447		5,186
FFO (1) (2)		557,722		555,570		192,578		182,660
Preferred distributions		(10,898)		(19,594)		(3,632)		(4,320)
Premium on redemption of Preference Units		-		(6,144)		-		(6,144)
FFO available to OP Units (1) (2)	$	546,824	$	529,832	$	188,946	$	172,196

(1) The National Association of Real Estate Investment Trusts (“NAREIT”) defines funds from operations (“FFO”) (April 2002 White Paper) as net income (computed in accordance with accounting principles generally accepted in the United States (“GAAP”)), excluding gains (or losses) from sales of depreciable property, plus depreciation and amortization, and after adjustments for unconsolidated partnerships and joint ventures. Adjustments for unconsolidated partnerships and joint ventures will be calculated to reflect funds from operations on the same basis. The April 2002 White Paper states that gain or loss on sales of property is excluded from FFO for previously depreciated operating properties only. Once the Operating Partnership commences the conversion of units to condominiums, it simultaneously discontinues depreciation of such property. FFO available to OP Units is calculated on a basis consistent with net income available to OP Units and reflects adjustments to net income for preferred distributions and premiums on redemption of preference units/interests in accordance with accounting principles generally accepted in the United States.

(2) The Operating Partnership believes that FFO and FFO available to OP Units are helpful to investors as supplemental measures of the operating performance of a real estate company, because they are recognized measures of performance by the real estate industry and by excluding gains or losses related to dispositions of depreciable property and excluding real estate depreciation (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO and FFO available to OP Units can help compare the operating performance of a company’s real estate between periods or as compared to different companies. FFO and FFO available to OP Units do not represent net income, net income available to OP Units or net cash flows from operating activities in accordance with GAAP. Therefore, FFO and FFO available to OP Units should not be exclusively considered as alternatives to net income, net

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income available to OP Units or net cash flows from operating activities as determined by GAAP or as measures of liquidity. The Operating Partnership’s calculation of FFO and FFO available to OP Units may differ from other real estate companies due to, among other items, variations in cost capitalization policies for capital expenditures and, accordingly, may not be comparable to such other real estate companies.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

The Operating Partnership’s market risk has not changed materially from the amounts and information reported in Item 7A, Quantitative and Qualitative Disclosures About Market Risk, to the Operating Partnership’s Form 10-K for the year ended December 31, 2007. See the Current Environment section of Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations as well as an update to our risk factors discussed in Part II, Item 1A, Risk Factors, relating to market risk and the current economic environment. See also Note 11 in the Notes to Consolidated Financial Statements for additional discussion of derivative instruments.

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures:

Effective as of September 30, 2008, the Operating Partnership carried out an evaluation, under the supervision and with the participation of the Operating Partnership’s management, including the Chief Executive Officer and Chief Financial Officer of EQR, of the effectiveness of the Operating Partnership’s disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures are effective to ensure that information required to be disclosed by the Operating Partnership in its Exchange Act filings is recorded, processed, summarized and reported within the periods specified in the SEC’s rules and forms.

(b) Changes in Internal Control over Financial Reporting:

There were no changes to the internal control over financial reporting of the Operating Partnership identified in connection with the Operating Partnership’s evaluation referred to above that occurred during the third quarter of 2008 that have materially affected, or are reasonably likely to materially affect, the Operating Partnership’s internal control over financial reporting.

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PART II.         OTHER INFORMATION

Item 1.  Legal Proceedings

The Operating Partnership does not believe that there have been any material developments in the legal proceedings that were discussed in Part I, Item 3 of the Operating Partnership’s Form 10-K for the year ended December 31, 2007.

Item 1A.  Risk Factors

Except for the risk factors set forth below, there have been no material changes to the risk factors that were discussed in Part I, Item 1A of the Operating Partnership’s Form 10-K for the year ended December 31, 2007. The risk factors set forth below are disclosed to provide additional information.

Disruptions in the Financial Markets Could Adversely Affect Our Ability to Obtain Debt Financing and Impact our Acquisitions and Dispositions

The United States credit markets have experienced, and could continue to experience, significant dislocations and liquidity disruptions. These circumstances have materially impacted liquidity in the debt markets, making financing terms for us less attractive, and resulted in the unavailability of certain types of debt financing. If the capital and credit markets continue to experience volatility and the availability of funds remains limited, we will incur increased costs associated with issuing debt instruments. In addition, it is possible that our ability to access the capital and credit markets may be limited or precluded by these or other factors at a time when we would like, or need, to do so, which would have an impact on our ability to refinance maturing debt and/or react to changing economic and business conditions. Due to disruptions in the floating rate tax exempt bond market where the interest rates reset weekly and in the credit market’s perception of Fannie Mae and Freddie Mac, who guaranty and provide liquidity for these bonds, we have experienced and could continue to experience an increase in interest rates on these debt obligations. Uncertainty in the credit markets 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. Potential continued disruptions in the financial markets could also have other unknown adverse effects on us or the economy generally.

Non-Performance by Our Counterparties Could Adversely Affect Our Performance

Although we have not experienced any material counterparty non-performance, the disruption in financial and credit markets could, among other things, impede the ability of our counterparties to perform on their contractual obligations. There are multiple financial institutions that are individually committed to lend us varying amounts as part of our revolving credit facility. One of the financial institutions, with a commitment of $75.0 million, has recently declared bankruptcy and it is unlikely that they would honor their financial commitment. While we are currently negotiating with other banks to replace this provider, if we are unsuccessful, our borrowing capacity under the credit facility could be permanently reduced. In addition, the parent of one of the Operating Partnership’s insurance providers has also experienced liquidity issues and while there has yet to be any non-performance, should any occur it could negatively impact the Operating Partnership.

A Significant Downgrade in Our Credit Ratings Could Adversely Affect Our Performance

A significant downgrade in our credit ratings, while not affecting our ability to draw proceeds under the revolving credit facility, would cause our borrowing costs to increase under the facility and also would impact our ability to borrow secured and unsecured debt by increasing borrowing costs and causing shorter borrowing periods, or otherwise limit our access to capital.

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Item 5.  Other Information

EQR’s compensatory plans and agreements with certain of its executive officers and eligible employees provide for certain benefits upon retirement at or after age 62. As of November 4, 2008, but effective as of January 1, 2009, EQR changed the definition of retirement for employees (including all officers but not members of EQR’s Board of Trustees) under its 2002 Share Incentive Plan and 1993 Share Option and Share Award Plan (collectively, the “Plans”) and other compensatory agreements. For employees hired prior to January 1, 2009, retirement generally will mean the termination of employment (other than for cause): (i) on or after age 62; or (ii) prior to age 62 after meeting the requirements of the Rule of 70 (described below). For employees hired after January 1, 2009, retirement generally will mean the termination of employment (other than for cause) after meeting the requirements of the Rule of 70.

The Rule of 70 is met when an employee’s years of service with EQR (which must be at least 15 years) plus his or her age (which must be at least 55 years) on the date of termination equals or exceeds 70 years. In addition, the employee must give EQR at least 6 months’ advance written notice of his or her intention to retire and sign a release upon termination of employment, releasing EQR from customary claims and agreeing to ongoing non-competition and employee non-solicitation provisions.

The following executive officers of EQR will become eligible for retirement under the new definition of retirement of employees in the next three years: Frederick C. Tuomi, President—Property Management – 2009; Bruce C. Strohm, Executive Vice President and General Counsel – 2010; and David J. Neithercut, Chief Executive Officer and President – 2011.

For employees hired prior to January 1, 2009, who retire at or after age 62, such employee’s unvested restricted shares and share options would immediately vest, and share options would continue to be exercisable for the balance of the applicable ten-year option period, as was provided under the Plans prior to the adoption of the Rule of 70.

For all other employees (those hired after January 1, 2009 and those hired before such date who choose to retire prior to age 62), upon such retirement under the new definition of retirement of employees, such employee’s unvested restricted shares and share options would continue to vest per the original vesting schedule (subject to immediate vesting upon the occurrence of a subsequent change in control of EQR or the employee’s death), and options would continue to be exercisable for the balance of the applicable ten-year option period, subject to the employee’s compliance with the non-competition and employee non-solicitation provisions. If an employee violates these provisions after such retirement, all unvested restricted shares and unvested and vested share options at the time of the violation would be void, unless otherwise determined by the Compensation Committee of the Board of Trustees of EQR.

The new definition of retirement of employees will similarly apply to the Executive Retirement Benefits Agreements entered into between each of Mr. Neithercut, Mr. Tuomi, Mr. Strohm and Alan George, EQR’s Executive Vice President and Chief Investment Officer, and EQR in February 2001, and the Split Dollar Agreements entered into by such executives and EQR in December 1997.

Item 6.   Exhibits – See the Exhibit Index

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SIGNATURES

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

	ERP OPERATING LIMITED PARTNERSHIP
	BY:	EQUITY RESIDENTIAL
		ITS GENERAL PARTNER
Date: November 6, 2008	By:	/s/                Mark J. Parrell
		Mark J. Parrell
		Executive Vice President and
		Chief Financial Officer
Date: November 6, 2008	By:	/s/                Ian S. Kaufman
		Ian S. Kaufman
		First Vice President and
		Chief Accounting Officer

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EXHIBIT INDEX

The exhibits listed below are filed as part of this report. References to exhibits or other filings under the caption “Location” indicate that the exhibit or other filing has been filed, that the indexed exhibit and the exhibit referred to are the same and that the exhibit referred to is incorporated by reference. The Commission file number for our Exchange Act filings referenced below is 0-24920.

Exhibit	Description	Location
10.1	First Amendment to Equity Residential Restated 2002 Share Incentive Plan.	Included as Exhibit 10.1 to EQR’s Form 10-Q for the quarterly period ended September 30, 2008.
10.2	Fourth Amendment to Equity Residential 1993 Share Option and Share Award Plan.	Included as Exhibit 10.2 to EQR’s Form 10-Q for the quarterly period ended September 30, 2008.
10.3	Form of Letter Agreement between Equity Residential and each of David J. Neithercut, Frederick C. Tuomi, Alan W. George and Bruce C. Strohm.	Included as Exhibit 10.3 to EQR’s Form 10-Q for the quarterly period ended September 30, 2008.
10.4	The Equity Residential Supplemental Executive Retirement Plan as Amended and Restated Effective November 1, 2008.	Included as Exhibit 10.4 to EQR’s Form 10-Q for the quarterly period ended September 30, 2008.
31.1	Certification of David J. Neithercut, Chief Executive Officer of Registrant’s General Partner.	Attached herein.
31.2	Certification of Mark J. Parrell, Chief Financial Officer of Registrant’s General Partner.	Attached herein.
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of David J. Neithercut, Chief Executive Officer of Registrant’s General Partner.	Attached herein.
32.2	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Mark J. Parrell, Chief Financial Officer of Registrant’s General Partner.	Attached herein.

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, David J. Neithercut, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ERP Operating Limited Partnership;

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: November 6, 2008	/s/	David J. Neithercut
		David J. Neithercut
		Chief Executive Officer of Registrant’s General Partner

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Mark J. Parrell, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ERP Operating Limited Partnership;

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: November 6, 2008	/s/	Mark J. Parrell
		Mark J. Parrell
		Chief Financial Officer of Registrant’s General Partner

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ERP Operating Limited Partnership (“ERPOP”) on Form 10-Q for the period ending September 30, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David J. Neithercut, Chief Executive Officer of Equity Residential, general partner of ERPOP, certify, pursuant to 18.U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) 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 ERPOP.

/s/ David J. Neithercut

David J. Neithercut

Chief Executive Officer

of Registrant’s General Partner

November 6, 2008

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ERP Operating Limited Partnership (“ERPOP”) on Form 10-Q for the period ending September 30, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Mark J. Parrell, Chief Financial Officer of Equity Residential, general partner of ERPOP, certify, pursuant to 18.U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) 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 ERPOP.

/s/ Mark J. Parrell

Mark J. Parrell

Chief Financial Officer

of Registrant’s General Partner

November 6, 2008