10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________________________ 

FORM 10-Q

____________________________________________________  

(Mark One)

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

For the Quarterly Period Ended March 31, 2015

OR

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

For the Transition Period From To

Commission file number 001-34626

PIEDMONT OFFICE REALTY TRUST, INC.

(Exact name of registrant as specified in its charter)

 ____________________________________________________ 

Maryland	58-2328421
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

11695 Johns Creek Parkway

Ste. 350

Johns Creek, Georgia 30097

(Address of principal executive offices)

(Zip Code)

(770) 418-8800

(Registrant’s telephone number, including area code)

N/A

(Former name, former address, and former fiscal year, if changed since last report)

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   o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x No  o

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

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

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

Number of shares outstanding of the Registrant’s

common stock, as of April 28, 2015:

154,391,509 shares

FORM 10-Q

PIEDMONT OFFICE REALTY TRUST, INC.

TABLE OF CONTENTS

			Page No.
PART I.	Financial Statements
	Item 1.	Consolidated Financial Statements	4
		Consolidated Balance Sheets—March 31, 2015 (unaudited) and December 31, 2014	5
		Consolidated Statements of Income for the Three Months Ended March 31, 2015 (unaudited) and 2014 (unaudited)	6
		Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2015 (unaudited) and 2014 (unaudited)	7
		Consolidated Statements of Stockholders' Equity for the Three Months Ended March 31, 2015 (unaudited) and the Year Ended December 31, 2014	8
		Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2015 (unaudited) and 2014 (unaudited)	9
		Condensed Notes to Consolidated Financial Statements (unaudited)	10
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	42
	Item 4.	Controls and Procedures	43
PART II.	Other Information
	Item 1.	Legal Proceedings	44
	Item 1A.	Risk Factors	44
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
	Item 3.	Defaults Upon Senior Securities	44
	Item 4.	Mine Safety Disclosures	44
	Item 5.	Other Information	45
	Item 6.	Exhibits	45

2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Form 10-Q may constitute forward-looking statements within the meaning of the federal securities laws. In addition, Piedmont Office Realty Trust, Inc. ("Piedmont"), or its executive officers on Piedmont’s behalf, may from time to time make forward-looking statements in reports and other documents Piedmont files with the Securities and Exchange Commission or in connection with other written or oral statements made to the press, potential investors, or others. Statements regarding future events and developments and Piedmont’s future performance, as well as management’s expectations, beliefs, plans, estimates, or projections relating to the future, are forward-looking statements within the meaning of these laws. Forward-looking statements include statements preceded by, followed by, or that include the words “may,” “will,” “expect,” “intend,” “anticipate,” “estimate,” “believe,” “continue,” or other similar words. Examples of such statements in this report include descriptions of our real estate, financings, and operating objectives; discussions regarding future dividends; and discussions regarding the potential impact of economic conditions on our portfolio.

These statements are based on beliefs and assumptions of Piedmont’s management, which in turn are based on information available at the time the statements are made. Important assumptions relating to the forward-looking statements include, among others, assumptions regarding the demands for office space in the markets in which Piedmont operates, competitive conditions, and general economic conditions. These assumptions could prove inaccurate. The forward-looking statements also involve risks and uncertainties, which could cause actual results to differ materially from those contained in any forward-looking statement. Many of these factors are beyond Piedmont’s ability to control or predict. Such factors include, but are not limited to, the following:

• Economic, regulatory, and/or socio-economic changes (including accounting standards) that impact the real estate market generally, or that could affect patterns of use of commercial office space, may cause our operating results to suffer and decrease the value of our real estate properties;

• The impact of competition on our efforts to renew existing leases or re-let space on terms similar to existing leases;

• Changes in the economies and other conditions affecting the office sector in general and the specific markets in which we operate, particularly in Chicago, Washington, D.C., and the New York metropolitan area, where we have high concentrations of office properties;

• Lease terminations or lease defaults, particularly by one of our large lead tenants;

• Adverse market and economic conditions may negatively affect us and could cause us to recognize impairment charges on both our long-lived assets or goodwill or otherwise impact our performance;

• The success of our real estate strategies and investment objectives, including our ability to identify and consummate suitable acquisitions;

• The illiquidity of real estate investments could significantly impede our ability to respond to adverse changes in the performance of our properties;

• Acquisitions of properties may have unknown risks and other liabilities at the time of acquisition;

• Development and construction delays and resultant increased costs and risks may negatively impact our operating results;

• Our real estate development strategies may not be successful;

• Future terrorist attacks in the major metropolitan areas in which we own properties could significantly impact the demand for, and value of, our properties;

• Costs of complying with governmental laws and regulations;

• Additional risks and costs associated with directly managing properties occupied by government tenants;

• Future offerings of debt or equity securities may adversely affect the market price of our common stock;

• Changes in market interest rates may have an effect on the value of our common stock;

• Uncertainties associated with environmental and other regulatory matters;

• Potential changes in political environment and reduction in federal and/or state funding of our governmental tenants;

• We may be subject to litigation, which could have a material adverse effect on our financial condition;

• Changes in tax laws impacting REITs and real estate in general, as well as Piedmont’s ability to continue to qualify as a REIT under the Internal Revenue Code (the “Code”); and

• Other factors, including the risk factors discussed under Item 1A. of Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2014.

Management believes these forward-looking statements are reasonable; however, undue reliance should not be placed on any forward-looking statements, which are based on current expectations. Further, forward-looking statements speak only as of the date they are made, and management undertakes no obligation to update publicly any of them in light of new information or future events.

3

PART I. FINANCIAL STATEMENTS

ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS

The information presented in the accompanying consolidated balance sheets and related consolidated statements of operations, comprehensive income, stockholders’ equity, and cash flows reflects all adjustments that are, in management’s opinion, necessary for a fair and consistent presentation of financial position, results of operations, and cash flows in accordance with U.S. generally accepted accounting principles.

The accompanying financial statements should be read in conjunction with the notes to Piedmont’s financial statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in this report on Form 10-Q and with Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2014. Piedmont’s results of operations for the three months endedMarch 31, 2015 are not necessarily indicative of the operating results expected for the full year.

4

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except for share and per share amounts)

	(Unaudited)
	March 31, 2015			December 31, 2014
Assets:
Real estate assets, at cost:
Land	$	707,340		$	702,800
Buildings and improvements, less accumulated depreciation of $1,118,327 and $1,088,062 as of March 31, 2015 and December 31, 2014, respectively	3,234,495			3,224,178
Intangible lease assets, less accumulated amortization of $84,212 and $79,860 as of March 31, 2015 and December 31, 2014, respectively	69,254			70,177
Construction in progress	83,853			63,393
Real estate assets held for sale	—			14,544
Total real estate assets	4,094,942			4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,820			7,798
Cash and cash equivalents	7,479			12,306
Tenant receivables, net of allowance for doubtful accounts of $106 and $231 as of March 31, 2015 and December 31, 2014, respectively	30,132			27,711
Straight-line rent receivables	175,340			169,532
Restricted cash and escrows	671			5,679
Prepaid expenses and other assets	26,879			27,820
Goodwill	180,097			180,097
Interest rate swaps	520			430
Deferred financing costs, less accumulated amortization of $6,607 and $6,067 as of March 31, 2015 and December 31, 2014, respectively	7,391			7,667
Deferred lease costs, less accumulated amortization of $152,161 and $142,915 as of March 31, 2015 and December 31, 2014, respectively	288,591			280,105
Other assets held for sale	—			1,264
Total assets	$	4,819,862		$	4,795,501
Liabilities:
Unsecured debt, net of discount of $5,682 and $5,456 as of March 31, 2015 and December 31, 2014, respectively	$	1,877,318		$	1,828,544
Secured debt, inclusive of premium of $3,137 and $3,258 as of March 31, 2015 and December 31, 2014, respectively	448,791			449,045
Accounts payable, accrued expenses, and accrued capital expenditures	119,466			133,988
Deferred income	25,970			22,215
Intangible lease liabilities, less accumulated amortization of $39,682 and $37,964 as of March 31, 2015 and December 31, 2014, respectively	42,978			43,277
Interest rate swaps	19,416			6,417
Total liabilities	2,533,939			2,483,486
Commitments and Contingencies	—			—
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of March 31, 2015 or December 31, 2014	—			—
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of March 31, 2015 or December 31, 2014	—			—
Common stock, $.01 par value, 750,000,000 shares authorized; 154,339,507 and 154,324,089 shares issued and outstanding as of March 31, 2015 and December 31, 2014, respectively	1,543			1,543
Additional paid-in capital	3,667,574			3,666,182
Cumulative distributions in excess of earnings	(1,378,786		)	(1,365,620		)
Other comprehensive income	(5,437		)	8,301
Piedmont stockholders’ equity	2,284,894			2,310,406
Noncontrolling interest	1,029			1,609
Total stockholders’ equity	2,285,923			2,312,015
Total liabilities and stockholders’ equity	$	4,819,862		$	4,795,501

See accompanying notes

5

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except for share and per share amounts)

	(Unaudited)
	Three Months Ended
	March 31,
	2015			2014
Revenues:
Rental income	$	117,807		$	110,904
Tenant reimbursements	31,390			24,929
Property management fee revenue	562			487
	149,759			136,320
Expenses:
Property operating costs	64,236			58,271
Depreciation	36,232			33,644
Amortization	14,670			14,573
General and administrative	6,407			4,555
	121,545			111,043
Real estate operating income	28,214			25,277
Other income (expense):
Interest expense	(19,016		)	(18,926		)
Other income/(expense)	(181		)	(90		)
Net recoveries from casualty events and litigation settlements	—			3,042
Equity in income/(loss) of unconsolidated joint ventures	159			(266		)
	(19,038		)	(16,240		)
Income from continuing operations	9,176			9,037
Discontinued operations:
Operating income	—			466
Loss on sale of real estate assets	—			(106		)
Income from discontinued operations	—			360
Gain on sale of real estate assets	10,073			—
Net income	19,249			9,397
Less: Net income attributable to noncontrolling interest	(4		)	(4		)
Net income attributable to Piedmont	$	19,245		$	9,393
Per share information – basic and diluted:
Income from continuing operations and gain on sale of real estate assets	$	0.12		$	0.06
Income from discontinued operations	—			—
Net income available to common stockholders	$	0.12		$	0.06
Weighted-average common shares outstanding – basic	154,339,029			154,849,378
Weighted-average common shares outstanding – diluted	154,580,335			155,024,545

See accompanying notes.

6

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	(Unaudited)
	Three Months Ended
	March 31,
	2015					2014
Net income attributable to Piedmont			$	19,245				$	9,393
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(15,205	)				(9,886	)
Reclassification of previously recorded loss included in net income (See Note 5)	1,467					1,170
Other comprehensive income/(loss)			(13,738		)			(8,716		)
Comprehensive income attributable to Piedmont			$	5,507				$	677

See accompanying notes

7

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

FOR THE YEAR ENDED DECEMBER 31, 2014

AND FOR THE THREE MONTHS ENDEDMARCH 31, 2015 (UNAUDITED)

(in thousands, except per share amounts)

	Common  Stock					Additional Paid-In Capital			Cumulative Distributions in Excess of Earnings			Other Comprehensive Income/(Loss)			Non- controlling Interest			Total Stockholders’ Equity
	Shares		Amount
Balance, December 31, 2013	157,461		$	1,575		$	3,668,906		$	(1,231,209	)	$	20,278		$	1,609		$	2,461,159
Share repurchases as part of an announced plan	(3,190	)	(32		)	—			(52,764		)	—			—			(52,796		)
Retirement of shares returned from escrow	(85	)	(1		)	(1,478		)	—			—			—			(1,479		)
Redemption of noncontrolling interest in consolidated variable interest entity	—		—			(4,054		)	—			—			—			(4,054		)
Dividends to common stockholders ($0.81 per share), dividends to shareholders of subsidiary, and dividends reinvested	—		—			(188		)	(124,995		)	—			(15		)	(125,198		)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	138		1			2,996			—			—			—			2,997
Net income attributable to noncontrolling interest	—		—			—			—			—			15			15
Net income attributable to Piedmont	—		—			—			43,348			—			—			43,348
Other comprehensive income	—		—			—			—			(11,977		)	—			(11,977		)
Balance, December 31, 2014	154,324		1,543			3,666,182			(1,365,620		)	8,301			1,609			2,312,015
Share repurchases as part of an announced plan	—		—			—			—			—			—			—
Offering costs	—		—			(285		)	—			—			—			(285		)
Redemption of noncontrolling interest in consolidated variable interest entity	—		—			54			—			—			—			54
Reallocation of noncontrolling interest of subsidiary	—		—			1,128			—			—			(584		)	544
Dividends to common stockholders ($0.21 per share), dividends to shareholders of subsidiary, and dividends reinvested	—		—			(66		)	(32,411		)	—			—			(32,477		)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	16		—			561			—			—			—			561
Net income attributable to noncontrolling interest	—		—			—			—			—			4			4
Net income attributable to Piedmont	—		—			—			19,245			—			—			19,245
Other comprehensive loss	—		—			—			—			(13,738		)	—			(13,738		)
Balance, March 31, 2015	154,340		$	1,543		$	3,667,574		$	(1,378,786	)	$	(5,437	)	$	1,029		$	2,285,923

See accompanying notes

8

PIEDMONT OFFICE REALTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands) 

	(Unaudited)
	Three Months Ended
	March 31,
	2015			2014
Cash Flows from Operating Activities:
Net income	$	19,249		$	9,397
Operating distributions received from unconsolidated joint ventures	137			266
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	36,232			33,727
Amortization of deferred financing costs	387			774
Settlement of forward starting interest rate swaps	—			14,960
Other amortization	14,806			14,346
Stock compensation expense	725			636
Equity in loss/(income) of unconsolidated joint ventures	(159		)	266
(Gain)/loss on sale of real estate assets	(10,073		)	106
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables, net	(11,234		)	(1,371		)
(Increase)/decrease in restricted cash and escrows	(148		)	43
Decrease/(increase) in prepaid expenses and other assets	1,037			(3,467		)
Decrease in accounts payable and accrued expenses	(11,074		)	(350		)
Increase in deferred income	3,745			720
Net cash provided by operating activities	43,630			70,053
Cash Flows from Investing Activities:
Acquisition of real estate assets and related intangibles	(41,554		)	(400		)
Capitalized expenditures, net of accruals	(39,804		)	(27,187		)
Redemption of noncontrolling interest in unconsolidated variable interest entity	(4,000		)	—
Net sales proceeds from wholly-owned properties	25,803			22,322
Deferred lease costs paid	(4,414		)	(4,180		)
Net cash used in investing activities	(63,969		)	(9,445		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242		)	(454		)
Proceeds from debt	257,575			764,564
Repayments of debt	(209,254		)	(737,000		)
Costs of issuance of common stock	(90		)	—
Repurchases of common stock as part of announced plan	—			(54,515		)
Dividends paid and discount on dividend reinvestments	(32,477		)	(30,905		)
Net cash provided by/(used in) financing activities	15,512			(58,310		)
Net (decrease)/increase in cash and cash equivalents	(4,827		)	2,298
Cash and cash equivalents, beginning of period	12,306			6,973
Cash and cash equivalents, end of period	$	7,479		$	9,271
Supplemental Disclosures of Significant Noncash Investing and Financing Activities:
Change in accrued share repurchases as part of an announced plan	$	—		$	(1,836	)
Accrued capital expenditures and deferred lease costs	$	12,946		$	13,721

See accompanying notes

9

PIEDMONT OFFICE REALTY TRUST, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 2015

(unaudited)

1.Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the acquisition, development, management, and ownership of commercial real estate properties throughout the United States, including properties that are under construction, are newly constructed, or have operating histories. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through both consolidated and unconsolidated joint ventures. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of March 31, 2015, Piedmont owned 74 office properties, one redevelopment asset, and one office building through an unconsolidated joint venture. Piedmont's 74 consolidated office properties comprise 21.5 million square feet of primarily Class A commercial office space, and were 88.8% leased as of March 31, 2015. As of March 31, 2015, approximately 90% of Piedmont's Annualized Lease Revenue was generated from select office sub-markets in the following cities: Atlanta, Boston, Chicago, Dallas, Houston, Los Angeles, Minneapolis, New York, and Washington, D.C.

Piedmont internally evaluates all of its real estate assets as one operating segment, and accordingly, does not report segment information.

2.Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2014.

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

10

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from those estimates.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”), and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Recent Accounting Pronouncements

The Financial Accounting Standards Board (the "FASB") has issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). The amendments in ASU 2014-09 change the criteria for the recognition of revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services using a five-step determination process. Steps 1 through 5 involve (i) identifying contracts with a customer, (ii) identifying the performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations, and (v) recognizing revenue as an entity satisfies a performance obligation. Additionally, lease contracts are specifically excluded from ASU 2014-09. The amendments in ASU 2014-09 are effective in the first quarter of 2017 for Piedmont, and early adoption is not permitted. Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810), Amendments to the Consolidation Analysis ("ASU 2015-02"). The amendments in ASU 2015-02 modifies the consolidation analysis of certain types of entities. Specifically, ASU 2015-02 changes the assessment criteria of whether limited partnerships are VIEs, eliminates the presumption that general partners should consolidate a limited partner, eliminates certain conditions from the evaluation of whether a fee paid to a decision maker constitutes a VIE, and changes the evaluation regarding the impact of related parties in the primary beneficiary determination of a VIE. The amendments in ASU 2015-02 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The amendments in ASU 2015-03 require debt issuance costs to be presented in the balance sheet as a reduction to the underlying debt instrument, as opposed to a separate asset. The amendments do not change the method by which such costs are amortized against earnings, nor do they change their classification in the consolidated statements of income, as a component of interest expense. The amendments in ASU 2015-03 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact of adoption.

3. Acquisitions

During the three months endedMarch 31, 2015, Piedmont acquired 100% ownership of the following property using proceeds from the $500 Million Unsecured Line of Credit, proceeds from the sale of the 3900 Dallas Parkway building in Plano, Texas (see Note 9), and cash on hand, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Rentable Square Feet	Percentage Leased as of Acquisition		Purchase Price  (in millions)
Park Place on Turtle Creek	Dallas, TX	January 16, 2015	177,844	88	%	$	46.6

11

4.Debt

During the three months ended March 31, 2015, Piedmont entered into a $170 million unsecured term loan facility (the “$170 Million Unsecured 2015 Term Loan”) with a consortium of lenders. The term of the $170 Million Unsecured 2015 Term Loan is approximately three years with a maturity date of May 15, 2018; however, Piedmont may prepay the $170 Million Unsecured 2015 Term Loan, in whole or in part, at any time without premium or penalty. The proceeds of the $170 Million Unsecured 2015 Term Loan were used to pay off the principal maturing on the $50 Million Unsecured Term Loan, and the remaining net proceeds were used to pay down the balance outstanding under the $500 Million Unsecured Line of Credit.

The $170 Million Unsecured 2015 Term Loan has the option to bear interest at varying levels based on (i) the London Interbank Offered Rate (“LIBOR”) or Base Rate, defined as the greater of the prime rate, the federal funds rate plus one-half of one percent, or LIBOR for a one-month period plus one percent, (ii) the credit rating levels issued for the Registrant, and (iii) for LIBOR loans, an interest period selected by Piedmont OP of one, two, three, or six months, or to the extent available from all lenders in each case, one year or periods of less than one month. The stated interest rate spread over LIBOR can vary from 0.9% to 1.75% based upon the then current credit rating of Piedmont. As of March 31, 2015, the stated interest rate spread on the $170 Million Unsecured 2015 Term Loan was 1.125%.

Under the $170 Million Unsecured 2015 Term Loan, Piedmont is subject to certain financial covenants that require, among other things, the maintenance of an unencumbered interest coverage ratio of at least 1.75, an unencumbered leverage ratio of at least 1.60, a fixed charge coverage ratio of at least 1.50, a leverage ratio of no more than 0.60, and a secured debt ratio of no more than 0.40. As of March 31, 2015, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments.

Additionally, during the three months endedMarch 31, 2015, Piedmont incurred additional working capital borrowings of $88.0 million and, utilizing a portion of the proceeds of the $170 Million Unsecured 2015 Term Loan described above, as well as other cash on hand, made repayments totaling $159.0 million on its $500 Million Unsecured Line of Credit. Piedmont also made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $20.4 million and $16.5 million for the three months endedMarch 31, 2015 and 2014, respectively. Piedmont capitalized interest of $0.8 million and $0.4 million for the three months endedMarch 31, 2015 and 2014, respectively.

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The following table summarizes the terms of Piedmont’s indebtedness outstanding as of March 31, 2015 and December 31, 2014 (in thousands):

Facility	Collateral	Stated Rate(1)			Maturity		Amount Outstanding as of
							March 31, 2015		December 31, 2014
Secured (Fixed)
$105 Million Fixed-Rate Loan	US Bancorp Center	5.29	%	(2)	5/11/2015		$	105,000	$	105,000
$125 Million Fixed-Rate Loan	Four Property Collateralized Pool (3)	5.50	%		4/1/2016		125,000		125,000
$42.5 Million Fixed-Rate Loan	Las Colinas Corporate Center I & II	5.70	%		10/11/2016		42,525		42,525
$140 Million WDC Fixed-Rate Loans	1201 & 1225 Eye Street	5.76	%		11/1/2017		140,000		140,000
$35 Million Fixed-Rate Loan	5 Wall Street	5.55	%	(4)	9/1/2021		36,266		36,520
Subtotal/Weighted Average (5)		5.56	%				448,791		449,045
Unsecured (Variable and Fixed)
$300 Million Unsecured 2011 Term Loan		LIBOR +  1.15%		(6)	1/15/2020		298,996		298,944
$500 Million Unsecured Line of Credit		LIBOR + 1.175%		(7)	8/19/2016	(8)	363,000		434,000
$350 Million Unsecured Senior Notes		3.40	%	(9)	6/1/2023		348,831		348,800
$300 Million Unsecured 2013 Term Loan		LIBOR + 1.20%		(10)	1/31/2019		300,000		300,000
$400 Million Unsecured Senior Notes		4.45	%	(11)	3/15/2024		396,914		396,832
$50 Million Unsecured Term Loan		LIBOR + 1.15%			4/1/2015		—		49,968
$170 Million Unsecured 2015 Term Loan		LIBOR + 1.125%		(12)	5/15/2018		169,577		—
Subtotal/Weighted Average (5)		2.78	%				1,877,318		1,828,544
Total/ Weighted Average (5)		3.31	%				$	2,326,109	$	2,277,589

⁽¹⁾  Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of March 31, 2015 and December 31, 2014 is interest-only.

⁽²⁾  On April 10, 2015, Piedmont repaid in full the balance on the $105 Million Fixed-Rate Loan.

⁽³⁾  Property collateralized pool includes 1430 Enclave Parkway in Houston, Texas, Windy Point I and II in Schaumburg, Illinois, and 1055 East Colorado Boulevard in Pasadena, California.

⁽⁴⁾  The$35 Million Fixed-Rate Loan has a contractual fixed rate of 5.55% ; however, the amortization of the premium recorded in order to adjust the note to its estimated fair value, results in an effective interest rate of 3.75%.

⁽⁵⁾  Weighted average is based on contractual balance of outstanding debt and interest rates in the table as of March 31, 2015.

⁽⁶⁾  The $300 Million Unsecured 2011 Term Loan has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, the rate on this facility to 2.39% through the original maturity date of November 22, 2016 and 3.35% from November 22, 2016 to January 15, 2020.

⁽⁷⁾  Piedmont may select from multiple interest rate options with each draw, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.175% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of 30-day LIBOR draws at a rate of 0.18% (subject to the additional spread mentioned above).

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⁽⁸⁾  Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of August 21, 2017) provided Piedmont is not then in default and upon payment of extension fees.

⁽⁹⁾  The $350 Million Senior Notes have a fixed coupon rate of 3.40%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.45%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.43%.

⁽¹⁰⁾  The $300 Million Unsecured 2013 Term Loan has a stated variable rate; however, Piedmont entered into interest rate swap agreements which effectively fix, absent any changes to Piedmont's credit rating, the rate on this facility to 2.78% .

⁽¹¹⁾  The $400 Million Senior Notes have a fixed coupon rate of 4.45%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 4.48%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 4.10%.

⁽¹²⁾  Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.125% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of a 30-day LIBOR draw at a rate of 0.18% (subject to the additional spread mentioned above).

5.Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without changing the underlying notional amount. As of March 31, 2015, Piedmont was party to various forward starting interest rate swap agreements which fully hedge the variable cash flows associated with all of its outstanding unsecured, variable-rate debt, other than the $500 Million Line of Credit and the $170 Million Unsecured 2015 Term Loan. Additionally, as of March 31, 2015, Piedmont held $500 million of forward starting interest rate swaps to hedge its exposure to the variability in future cash flows associated with potential future debt issuances in 2015 and 2016. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows for forecasted transactions is 131 months.

The detail of Piedmont’s interest rate derivatives outstanding as of March 31, 2015 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	4	$300 Million Unsecured 2011 Term Loan	$	300	11/22/2011	11/22/2016
Interest rate swaps	4	$300 Million Unsecured 2013 Term Loan	200		1/30/2014	1/31/2019
Interest rate swaps	2	$300 Million Unsecured 2013 Term Loan	100		8/29/2014	1/31/2019
Forward starting interest rate swaps	3	$300 Million Unsecured 2011 Term Loan	300		11/22/2016	1/15/2020
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/27/2015	2/27/2022
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/25/2016	2/25/2026
Total			$	1,400

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Piedmont has elected to present its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. The detail of Piedmont’s interest rate derivatives on a gross and net basis as of March 31, 2015 and December 31, 2014, respectively, is as follows (in thousands):

Interest rate swaps classified as:	March 31, 2015			December 31, 2014
Gross derivative assets	$	520		$	430
Gross derivative liabilities	(19,416		)	(6,417		)
Net derivative liability	$	(18,896	)	$	(5,987	)

All of Piedmont's interest rate derivative agreements outstanding for the periods presented were designated as cash flow hedges of interest rate risk. As such, the effective portion of changes in the estimated fair value of these derivatives is recorded in other comprehensive income ("OCI") and is reclassified into earnings as interest expense in the period that the hedged forecasted transaction affects earnings. In addition, in conjunction with the issuance of various unsecured senior notes during the years ended December 31, 2014 and 2013, Piedmont settled several forward starting swap agreements for gains which were recorded as accumulated other comprehensive income during the respective period and are being amortized as an offset to interest expense over the term of the respective notes on a straight line basis (which approximates the effective interest method). Piedmont classifies cash flows from the settlement of hedging derivative instruments in the same category as the underlying exposure which is being hedged. As the settlements were the result of hedging Piedmont's exposure to interest rate changes and their effect on interest expense, they are classified as operating cash flows in the accompanying consolidated statements of cash flows.

The effective portion of Piedmont's interest rate derivatives, including the gain on settlement of forward swaps described above, that was recorded in the accompanying consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively, was as follows:

	Three Months Ended
Derivative in Cash Flow Hedging Relationships (Interest Rate Swaps) (in thousands)	March 31, 2015			March 31, 2014
Amount of gain/(loss) recognized in OCI on derivative	$	(15,205	)	$	(9,886	)
Amount of previously recorded loss reclassified from accumulated OCI into interest expense	$	1,467		$	1,170

Piedmont estimates that approximately $5.7 million will be reclassified from accumulated other comprehensive loss to interest expense over the next twelve months. No gain or loss was recognized related to hedge ineffectiveness or to amounts excluded from effectiveness testing on Piedmont’s cash flow hedges during the three months endedMarch 31, 2015 or 2014.

See Note 7 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it would be required to settle its obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $20.3 million as of March 31, 2015. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

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6.Variable Interest Entities and Equity Participation Rights

Variable interest holders who have the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and have the obligation to absorb the majority of losses of the entity or the right to receive significant benefits of the entity must consolidate the VIE.

During the three months ended March 31, 2015, Piedmont paid $4 million to settle the redemption option associated with an equity participation in Medici Atlanta, LLC, eliminating any ongoing third party interest.

A summary of Piedmont’s interests in and consolidation treatment of its outstanding VIEs as of March 31, 2015 and their related carrying values as of December 31, 2014 is as follows (net carrying amount in millions):

Entity	Piedmont’s % Ownership of Entity	Related Building	Consolidated/ Unconsolidated	Net Carrying Amount as of March 31, 2015			Net Carrying Amount as of December 31, 2014			Primary Beneficiary Considerations
1201 Eye Street NW Associates, LLC	49.5%	1201 Eye Street	Consolidated	$	(2.5	)	$	(2.8	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
1225 Eye Street NW Associates, LLC	49.5%	1225 Eye Street	Consolidated	$	0.6		$	(1.1	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
Piedmont 500 W. Monroe Fee, LLC	100%	500 W. Monroe	Consolidated	$	245.7		$	245.3		The Omnibus Agreement with the previous owner includes equity participation rights for the previous owner, if certain financial returns are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such returns are met.
Piedmont TownPark Land, LLC	100%	Land Parcel Adjacent to 400 TownPark building	Consolidated	$	7.9		$	7.9		The equity participation and service fee agreement includes equity participation rights for the third party manager if certain defined events occur and certain returns on investment are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such events occur and returns are achieved.

Each of the VIEs described above has the sole purpose of holding land and office buildings and their resulting operations, and are classified in the accompanying consolidated balance sheets in the same manner as Piedmont’s wholly-owned properties.

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7.Fair Value Measurement of Financial Instruments

Piedmont considers its cash, tenant receivables, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of March 31, 2015 and December 31, 2014, respectively (in thousands):

	March 31, 2015					December 31, 2014
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents(1)	$	7,479	$	7,479	Level 1	$	12,306	$	12,306	Level 1
Tenant receivables, net(1)	$	30,132	$	30,132	Level 1	$	27,711	$	27,711	Level 1
Restricted cash and escrows(1)	$	671	$	671	Level 1	$	5,679	$	5,679	Level 1
Interest rate swap asset	$	520	$	520	Level 2	$	430	$	430	Level 2
Liabilities:
Accounts payable and accrued expenses(1)	$	16,098	$	16,098	Level 1	$	14,395	$	14,395	Level 1
Interest rate swap liability	$	19,416	$	19,416	Level 2	$	6,417	$	6,417	Level 2
Debt	$	2,326,109	$	2,373,488	Level 2	$	2,277,589	$	2,314,020	Level 2

⁽¹⁾  For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to their short-term maturity.

Piedmont's debt was carried at book value as of March 31, 2015 and December 31, 2014; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap and forward starting interest rate swap agreements presented above, and further discussed in Note 5, are classified as “Interest rate swap” assets and liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of March 31, 2015 and December 31, 2014. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of March 31, 2015 and December 31, 2014, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 assets or liabilities.

8.Commitments and Contingencies

Commitments Under Existing Lease Agreements

Certain lease agreements include provisions that, at the option of the tenant, may obligate Piedmont to provide funding for capital improvements. Under its existing lease agreements, Piedmont may be required to fund significant tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. Further, Piedmont classifies such tenant and building improvements into two categories: (i) improvements which incrementally enhance the building's

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asset value by expanding its revenue generating capacity (“incremental capital expenditures”) and (ii) improvements which maintain the building's existing asset value and its revenue generating capacity (“non-incremental capital expenditures”). As of March 31, 2015, commitments for funding potential non-incremental capital expenditures over the next five years for tenant improvements totaled approximately $46.1 million related to Piedmont's existing lease portfolio over the respective lease terms, the majority of which Piedmont estimates may be required to be funded over the next three years based on when the underlying leases commence. For most of Piedmont’s leases, the timing of the actual funding of these tenant improvements is largely dependent upon tenant requests for reimbursement. In some cases, these obligations may expire with the leases without further recourse to Piedmont.

Additionally, as of March 31, 2015, commitments for incremental capital expenditures for tenant improvements associated with new and existing leases, primarily at value-add properties, totaled approximately $23.8 million.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in the re-interpretation of language in the lease agreements which could result in the refund of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. Piedmont recorded reductions in reimbursement revenues related to such tenant audits/disputes of approximately $0 and $0.3 million during the three months endedMarch 31, 2015 and 2014, respectively.

Letters of Credit

As of March 31, 2015, Piedmont was subject to a letter of credit of approximately $0.4 million, which reduces the total outstanding capacity under its $500 Million Unsecured Line of Credit. This letter of credit agreement is scheduled to expire in July 2015; however, it contains an automatic renewal feature, consisting of successive one-year renewal periods, subject to the satisfaction of the credit obligation and certain other limitations.

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9.Assets Held for Sale and Discontinued Operations

Assets Held for Sale

Assets held for sale as of December 31, 2014 consisted solely of the 3900 Dallas Parkway building. Details are presented below (in thousands):

	March 31, 2015		December 31, 2014
Real estate assets held for sale, net:
Land	$	—	$	1,517
Building and improvements, less accumulated depreciation of $10,342 as of December 31, 2014	—		13,027
Total real estate assets held for sale, net	$	—	$	14,544
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	768
Deferred lease costs, less accumulated amortization of $1,552 as of December 31, 2014	—		496
Total other assets held for sale, net	$	—	$	1,264

The 3900 Dallas Parkway building was subsequently sold during the three months ended March 31, 2015, and no other assets were held for sale as of March 31, 2015. The property was sold for approximately $26.2 million, resulting in a gain of approximately $10.1 million and net sales proceeds of approximately $25.8 million. As the sale of the 3900 Dallas Parkway building did not meet the criteria to be reported as a discontinued operation, the operational results for the building for periods prior to the sale are presented as continuing operations in the accompanying consolidated statements of income, and the gain on sale is presented separately on the face of the income statement.

Discontinued Operations

Asset disposals in previous periods that were previously classified as, and that continue to be reported as, discontinued operations for the three months endedMarch 31, 2015 and 2014 were as follows (in thousands):

Buildings Sold	Location	Date of Sale	Gain/(Loss) on Sale			Net Sales Proceeds
11107 and 11109 Sunset Hills Road	Reston, Virginia	March 19, 2014	$	(102	)	$	22,326
1441 West Long Lake Road	Troy, Michigan	April 30, 2014	$	562		$	7,202
4685 Investment Drive	Troy, Michigan	April 30, 2014	$	747		$	11,198

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Details comprising income from discontinued operations for the three months ended March 31, 2015 and 2014 are presented below (in thousands):

	Three Months Ended
	March 31, 2015		March 31, 2014
Revenues:
Rental income	$	—	$	1,174
Tenant reimbursements	—		112
	—		1,286
Expenses:
Property operating costs	—		505
Depreciation	—		83
Amortization	—		223
General and administrative	—		3
	—		814
Other income/(expense)	—		(6		)
Operating income, excluding gain on sale	—		466
Gain on sale of real estate assets	—		(106		)
Income from discontinued operations	$	—	$	360

10.Stock Based Compensation

From time to time, Piedmont has granted equity awards to all of its employees. The deferred stock awards are determined by the Compensation Committee of the board of directors of Piedmont and typically vest on the award anniversary date ratably over a multi-year period. Piedmont also has a multi-year performance share program for certain of its employees whereby equity awards may be earned based on the relative performance of Piedmont's total stockholder return as compared with a predetermined peer group's total stockholder return over the same multi-year period. Shares are not awarded until after the end of the multi-year performance period and vest upon award.

A rollforward of Piedmont's equity based award activity for the three months endedMarch 31, 2015 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested Deferred Stock Awards as of December 31, 2014	506,404		$	18.12
Deferred Stock Awards Granted During Three Months Ended March 31, 2015	—		$	—
Adjustment to Estimated Future Grants of Performance Share Awards During Three Months Ended March 31, 2015	(15,413	)	$	18.51
Deferred Stock Awards Vested During Three Months Ended March 31, 2015	(20,976	)	$	16.48
Deferred Stock Awards Forfeited During Three Months Ended March 31, 2015	—		$	—
Unvested Deferred Stock Awards as of March 31, 2015	470,015		$	18.18

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The following table provides additional information regarding stock award activity during the three months endedMarch 31, 2015 and 2014, respectively (in thousands except for per share data):

	Three Months Ended
	March 31, 2015		March 31, 2014
Weighted-Average Grant Date Fair Value of Shares Granted During the Period (per share)	$	—	$	16.45
Total Grant Date Fair Value of Shares Vested During the Period	$	346	$	4
Share-based Liability Awards Paid During the Period(1)	$	—	$	—

⁽¹⁾  Amount reflects the issuance of performance share awards during the period.

A detail of Piedmont’s outstanding employee stock awards as of March 31, 2015 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares as of March 31, 2015
April 4, 2012	Deferred Stock Award	169,128	$	17.53	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 4, 2013, 2014, and 2015, respectively.	53,868
April 2, 2013	Deferred Stock Award	132,826	$	19.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 2, 2014, 2015, and 2016, respectively.	76,156
April 2, 2013	Fiscal Year 2013-2015 Performance Share Program	—	$	18.91	Shares awarded, if any, will vest immediately upon determination of award in 2016.	—	(2)
January 3, 2014	Deferred Stock Award	95,476	$	16.45	Of the shares granted, 20% will vest on January 3, 2015, 2016, 2017, 2018, and 2019, respectively.	82,673
May 9, 2014	Deferred Stock Award	179,897	$	18.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 9, 2015, 2016, and 2017, respectively.	144,287
May 9, 2014	Fiscal Year 2014-2016 Performance Share Program	—	$	18.51	Shares awarded, if any, will vest immediately upon determination of award in 2017.	113,031	(3)
Total						470,015

⁽¹⁾  Amounts reflect the total grant to employees, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through March 31, 2015.

⁽²⁾  Estimated based on Piedmont's cumulative total stockholder return ("TSR") for the respective performance period through March 31, 2015. As of March 31, 2015, Piedmont's TSR for the fiscal year 2013-2015 performance share program was below threshold. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

⁽³⁾  Estimated based on Piedmont's cumulative TSR for the respective performance period through March 31, 2015. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

During the three months endedMarch 31, 2015 and 2014, Piedmont recognized approximately $0.9 million and $0.6 million of compensation expense related to stock awards, of which $0.8 million and $0.6 million related to the amortization of unvested shares, respectively. During the three months endedMarch 31, 2015, a net total of 15,418 shares were issued to employees, directors, and officers. As of March 31, 2015, approximately $2.3 million of unrecognized compensation cost related to unvested deferred stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

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11.Earnings Per Share

There are no adjustments to “Net income attributable to Piedmont” or “Income from continuing operations” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested deferred stock awards. Diluted weighted average number of common shares reflects the potential dilution under the treasury stock method that would occur if the remaining unvested deferred stock awards vested and resulted in additional common shares outstanding. Certain unvested deferred stock awards are not included in the calculation because they would be anti-dilutive and have no effect for the periods presented.

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended
	March 31, 2015	March 31, 2014
Weighted-average common shares – basic	154,339	154,849
Plus incremental weighted-average shares from time-vested conversions:
Deferred stock awards	241	176
Weighted-average common shares – diluted	154,580	155,025

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12.Guarantor and Non-Guarantor Financial Information

The following condensed consolidating financial information for Piedmont Operating Partnership, L.P. (the "Issuer"), Piedmont Office Realty Trust, Inc. (the "Guarantor"), and the other directly and indirectly owned subsidiaries of the Guarantor (the "Non-Guarantor Subsidiaries") is provided pursuant to the requirements of Rule 3-10 of Regulation S-X regarding financial statements of guarantors and issuers of guaranteed registered securities. The principal elimination entries relate to investments in subsidiaries and intercompany balances and transactions, including transactions with the Non-Guarantor Subsidiaries.

23

Condensed Consolidated Balance Sheets
As of March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406		$	—		$	625,934	$	—		$	707,340
Buildings and improvements, less accumulated depreciation	438,933			—			2,795,862		(300		)	3,234,495
Intangible lease assets, less accumulated amortization	1,676			—			67,578		—			69,254
Construction in progress	3,032			—			80,821		—			83,853
Total real estate assets	525,047			—			3,570,195		(300		)	4,094,942
Investments in and amounts due from unconsolidated joint ventures	7,820			—			—		—			7,820
Cash and cash equivalents	3,879			250			3,350		—			7,479
Tenant and straight-line rent receivables, net	37,756			—			167,716		—			205,472
Advances to affiliates	6,142,933			1,284,521			—		(7,427,454		)	—
Investment in subsidiary	—			3,846,399			191		(3,846,590		)	—
Notes receivable	161,350			—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	6,129			116			22,567		(1,262		)	27,550
Goodwill	180,097			—			—		—			180,097
Interest rate swaps	520			—			—		—			520
Deferred financing costs, net	7,023			—			368		—			7,391
Deferred lease costs, net	31,445			—			257,146		—			288,591
Total assets	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862
Liabilities:
Debt, net	$	1,901,208		$	—		$	610,141	$	(185,240	)	$	2,326,109
Accounts payable, accrued expenses, and accrued capital expenditures	16,732			674			103,322		(1,262		)	119,466
Advances from affiliates	392,696			4,909,707			2,185,841		(7,488,244		)	—
Deferred income	5,150			—			20,820		—			25,970
Intangible lease liabilities, net	—			—			42,978		—			42,978
Interest rate swaps	19,416			—			—		—			19,416
Total liabilities	2,335,202			4,910,381			2,963,102		(7,674,746		)	2,533,939
Stockholders’ Equity:
Common stock	—			1,543			—		—			1,543
Additional paid-in capital	3,842,399			3,670,447			1,318		(3,846,590		)	3,667,574
Retained/(cumulative distributions in excess of) earnings	931,835			(3,451,085		)	1,079,974		60,490			(1,378,786		)
Other comprehensive loss	(5,437		)	—			—		—			(5,437		)
Piedmont stockholders’ equity	4,768,797			220,905			1,081,292		(3,786,100		)	2,284,894
Noncontrolling interest	—			—			1,029		—			1,029
Total stockholders’ equity	4,768,797			220,905			1,082,321		(3,786,100		)	2,285,923
Total liabilities and stockholders’ equity	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862

24

Condensed Consolidated Balance Sheets
As of December 31, 2014
(in thousands)	Issuer		Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406	$	—		$	621,394	$	—		$	702,800
Buildings and improvements, less accumulated depreciation	442,034		—			2,782,444		(300		)	3,224,178
Intangible lease assets, less accumulated amortization	1,812		—			68,365		—			70,177
Construction in progress	1,355		—			62,038		—			63,393
Real estate assets held for sale, net	14,544		—			—		—			14,544
Total real estate assets	541,151		—			3,534,241		(300		)	4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,798		—			—		—			7,798
Cash and cash equivalents	8,143		1,790			2,373		—			12,306
Tenant and straight-line rent receivables, net	37,238		—			160,005		—			197,243
Advances to affiliates	6,084,243		1,282,443			—		(7,366,686		)	—
Investment in subsidiary	—		3,878,811			192		(3,879,003		)	—
Notes receivable	161,350		—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	10,912		—			23,541		(954		)	33,499
Goodwill	180,097		—			—		—			180,097
Interest rate swaps	430		—			—		—			430
Deferred financing costs, net	7,242		—			425		—			7,667
Deferred lease costs, net	31,340		—			248,765		—			280,105
Other assets held for sale, net	1,264		—			—		—			1,264
Total assets	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501
Liabilities:
Debt, net	$	1,852,434	$	—		$	610,395	$	(185,240	)	$	2,277,589
Accounts payable, accrued expenses, and accrued capital expenditures	19,403		465			115,074		(954		)	133,988
Advances from affiliates	376,122		4,909,362			2,138,140		(7,423,624		)	—
Deferred income	4,998		—			17,217		—			22,215
Intangible lease liabilities, net	—		—			43,277		—			43,277
Interest rate swaps	6,417		—			—		—			6,417
Total liabilities	2,259,374		4,909,827			2,924,103		(7,609,818		)	2,483,486
Stockholders’ Equity:
Common stock	—		1,543			—		—			1,543
Additional paid-in capital	3,874,757		3,670,236			192		(3,879,003		)	3,666,182
Retained/(cumulative distributions in excess of) earnings	928,776		(3,418,562		)	1,067,528		56,638			(1,365,620		)
Other comprehensive loss	8,301		—			—		—			8,301
Piedmont stockholders’ equity	4,811,834		253,217			1,067,720		(3,822,365		)	2,310,406
Noncontrolling interest	—		—			1,609		—			1,609
Total stockholders’ equity	4,811,834		253,217			1,069,329		(3,822,365		)	2,312,015
Total liabilities and stockholders’ equity	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501

25

Condensed Consolidated Statements of Income
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	18,937		$	—		$	99,577		$	(707	)	$	117,807
Tenant reimbursements	4,246			—			27,272			(128		)	31,390
Property management fee revenue	—			—			4,439			(3,877		)	562
	23,183			—			131,288			(4,712		)	149,759
Expenses:
Property operating costs	10,661			—			58,494			(4,919		)	64,236
Depreciation	5,803			—			30,429			—			36,232
Amortization	1,254			—			13,416			—			14,670
General and administrative	6,200			111			7,724			(7,628		)	6,407
	23,918			111			110,063			(12,547		)	121,545
Real estate operating income	(735		)	(111		)	21,225			7,835			28,214
Other income (expense):
Interest expense	(13,188		)	—			(8,949		)	3,121			(19,016		)
Other income/(expense)	2,766			—			174			(3,121		)	(181		)
Equity in income of unconsolidated joint ventures	159			—			—			—			159
	(10,263		)	—			(8,775		)	—			(19,038		)
Income from continuing operations	(10,998		)	(111		)	12,450			7,835			9,176
Discontinued operations:
Operating income	—			—			—			—			—
Income from discontinued operations	—			—			—			—			—
Gain on sale of real estate assets	10,073			—			—			—			10,073
Net income	(925		)	(111		)	12,450			7,835			19,249
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(925	)	$	(111	)	$	12,446		$	7,835		$	19,245

26

Condensed Consolidated Statements of Income
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	17,400		$	—		$	95,157		$	(1,653	)	$	110,904
Tenant reimbursements	3,861			—			21,179			(111		)	24,929
Property management fee revenue	—			—			4,171			(3,684		)	487
	21,261			—			120,507			(5,448		)	136,320
Expenses:
Property operating costs	10,044			—			53,878			(5,651		)	58,271
Depreciation	5,840			—			27,804			—			33,644
Amortization	1,111			—			13,462			—			14,573
General and administrative	4,469			77			5,961			(5,952		)	4,555
	21,464			77			101,105			(11,603		)	111,043
Real estate operating income	(203		)	(77		)	19,402			6,155			25,277
Other income (expense):
Interest expense	(9,120		)	—			(12,939		)	3,133			(18,926		)
Other income/(expense)	2,762			35			246			(3,133		)	(90		)
Net recoveries/(loss) from casualty events and litigation settlements	1,351			—			1,691			—			3,042
Equity in income of unconsolidated joint ventures	(266		)	—			—			—			(266		)
	(5,273		)	35			(11,002		)	—			(16,240		)
Income from continuing operations	(5,476		)	(42		)	8,400			6,155			9,037
Discontinued operations:
Operating income	480			—			(14		)	—			466
Loss on sale of real estate assets	(106		)	—			—			—			(106		)
Income from discontinued operations	374			—			(14		)	—			360
Net income	(5,102		)	(42		)	8,386			6,155			9,397
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(5,102	)	$	(42	)	$	8,382		$	6,155		$	9,393

27

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	(6,974	)	$	426		$	42,343		$	7,835		$	43,630
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(5,091		)	—			(76,267		)	—			(81,358		)
Redemption of noncontrolling interest in unconsolidated variable interest entity	—			—			(4,000		)	—			(4,000		)
Net sales proceeds from wholly-owned properties	25,803			—			—			—			25,803
Deferred lease costs paid	(846		)	—			(3,568		)	—			(4,414		)
Net cash used in investing activities	19,866			—			(83,835		)	—			(63,969		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242		)	—			—			—			(242		)
Proceeds from debt	257,575			—			—			—			257,575
Repayments of debt	(209,000		)	—			(254		)	—			(209,254		)
Costs of issuance of common stock	—			(90		)	—			—			(90		)
(Distributions to)/repayments from affiliates	(65,489		)	30,601			42,723			(7,835		)	—
Dividends paid and discount on dividend reinvestments	—			(32,477		)	—			—			(32,477		)
Net cash provided by financing activities	(17,156		)	(1,966		)	42,469			(7,835		)	15,512
Net decrease in cash and cash equivalents	(4,264		)	(1,540		)	977			—			(4,827		)
Cash and cash equivalents, beginning of period	8,143			1,790			2,373			—			12,306
Cash and cash equivalents, end of period	$	3,879		$	250		$	3,350		$	—		$	7,479

28

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	21,395		$	594		$	41,908		$	6,156		$	70,053
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(6,875		)	—			(20,712		)	—			(27,587		)
Net sales proceeds from wholly-owned properties	22,322			—			—			—			22,322
Deferred lease costs paid	(720		)	—			(3,460		)	—			(4,180		)
Net cash used in investing activities	14,727			—			(24,172		)	—			(9,445		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(454		)	—			—			—			(454		)
Proceeds from debt	764,564			—			—			—			764,564
Repayments of debt	(162,000		)	—			(575,000		)	—			(737,000		)
Repurchases of common stock as part of announced plan	—			(54,515		)	—			—			(54,515		)
(Distributions to)/repayments from affiliates	(635,361		)	84,826			556,691			(6,156		)	—
Dividends paid and discount on dividend reinvestments	—			(30,905		)	—			—			(30,905		)
Net cash used in financing activities	(33,251		)	(594		)	(18,309		)	(6,156		)	(58,310		)
Net increase in cash and cash equivalents	2,871			—			(573		)	—			2,298
Cash and cash equivalents, beginning of period	3,261			150			3,562			—			6,973
Cash and cash equivalents, end of period	$	6,132		$	150		$	2,989		$	—		$	9,271

29

13.Subsequent Events

Second Quarter Dividend Declaration

On April 28, 2015, the board of directors of Piedmont declared dividends for the second quarter of 2015 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on May 29, 2015. Such dividends are to be paid on June 19, 2015.

Property Dispositions

On April 15, 2015, Piedmont entered into a binding contract to sell Copper Ridge Center, an approximately 268,000 square foot, multi-tenant office building located in Lyndhurst, New Jersey, constructed in 1989, and approximately 87% leased to various tenants, including anchor tenant, Ralph Lauren. The contract is subject to customary closing conditions and is anticipated to close during the second quarter of 2015.

On April 28, 2015, Piedmont sold 5601 Headquarters Drive in Plano, Texas, an approximately 166,000 square foot office building constructed in 2001 and 100% leased to Intuit Inc.

On April 29, 2015, Piedmont sold River Corporate Center in Tempe, Arizona, an approximately 133,000 square foot office building constructed in 1998 and 100% leased to US Foods, Inc., for $24.6 million, or $185 per square foot.

30

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

The following discussion and analysis should be read in conjunction with the accompanying consolidated financial statements and notes thereto of Piedmont Office Realty Trust, Inc. (“Piedmont”). See also “Cautionary Note Regarding Forward-Looking Statements” preceding Part I, as well as the notes to our consolidated financial statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Liquidity and Capital Resources

We intend to use cash flows generated from the operation of our properties, proceeds from our $500 Million Unsecured Line of Credit, and proceeds from property dispositions as our primary sources of immediate liquidity. In addition, we believe we have immediate access to, and may issue, additional equity or debt securities from time to time or seek additional borrowings from third-party lenders as further sources of capital. During the three months ended March 31, 2015, we entered into a continuous equity offering program under which we may sell, from time to time, up to an aggregate of $250.0 million in shares of our common stock in at-the-market ("ATM") offerings. The use of the ATM equity program, as well as the availability and attractiveness of terms for the other additional sources of capital mentioned above, are highly dependent on the timing and volume of our property acquisition and disposition activities, as well as overall market conditions.

During the three months ended March 31, 2015, we obtained the three-year, $170 Million Unsecured 2015 Term Loan which was used to pay off the maturing $50 Million Unsecured Term Loan and pay down the balance outstanding on our $500 Million Unsecured Line of Credit. Subsequent to quarter end, we paid off a maturing $105.0 million mortgage loan that was secured by the US Bancorp Center in Minneapolis, Minnesota using proceeds from our $500 Million Unsecured Line of Credit. In addition, we have just received approximately $57.5 million of net sales proceeds from the disposition of River Corporate Center in Tempe, Arizona, and 5601 Headquarters Drive in Plano, Texas, which we intend to use to pay down the balance outstanding under our $500 Million Unsecured Line of Credit.

Our most consistent use of capital has historically been, and will continue to be, to fund capital expenditures related to new or our existing portfolio of properties. During the three months endedMarch 31, 2015 and March 31, 2014 we paid for the following types of capital expenditures (in thousands):

	Three Months Ended
	March 31, 2015		March 31, 2014
Capital expenditures for new development	$	12,131	$	699
Capital expenditures for redevelopment/renovations	6,773		1,046
Other capital expenditures, including tenant improvements	20,900		25,442
Total capital expenditures(1)	$	39,804	$	27,187

⁽¹⁾  Of the total amounts paid, approximately $1.4 million and $0.7 million relates to soft costs such as capitalized interest, payroll, and other general and administrative expenses for the three months endedMarch 31, 2015 and 2014, respectively.

"Capital expenditures for new development" relate to the construction of a 300,000 square foot, 11-story office tower in Houston, Texas. We broke ground on the development during the second quarter of 2014 and anticipate expending an additional $26-$28 million to complete the project during the summer of 2015, as well as expending approximately $21-$24 million in leasing commissions and tenant improvements during subsequent lease-up of the property.

"Capital expenditures for redevelopment/renovations" relate to repositioning our 3100 Clarendon Boulevard building in Arlington, Virginia from governmental use to private sector use. The first phase of the project, which included the renovation of the office tower, is substantially complete. The second phase, involving retail and plaza work, will continue into the third quarter of 2015. We currently anticipate spending an additional $12-$13 million to complete the project and an additional $21-$22 million in leasing commissions and tenant improvements during subsequent lease-up of the property.

"Other capital expenditures" include all other capital expenditures during the period and are typically comprised of tenant and building improvements and leasing commissions necessary to lease or maintain our existing portfolio of office properties.

31

Piedmont classifies its tenant and building improvements into two categories: (i) improvements which incrementally enhance the building's asset value by expanding its revenue generating capacity (“incremental capital expenditures”) and (ii) improvements which maintain the building's existing asset value and its revenue generating capacity (“non-incremental capital expenditures”). As of March 31, 2015, commitments for funding non-incremental capital expenditures for tenant improvements over the next five years related to Piedmont's existing lease portfolio totaled approximately $46.1 million. The timing of the funding of these commitments is largely dependent upon tenant requests for reimbursement; however, we anticipate that a significant portion of these improvement allowances may be requested over the next three years based on when the underlying leases commence. In some instances, these obligations may expire with the respective lease, without further recourse to us. Additionally, as of March 31, 2015, commitments for incremental capital expenditures for tenant improvements associated with new and existing leases, primarily at value-add properties, totaled approximately $23.8 million.

In addition to the amounts described above that we have already committed to as a part of executed leases, we anticipate continuing to incur similar market-based tenant improvement allowances and leasing commissions in conjunction with procuring future leases. For example, for leases executed during the three months endedMarch 31, 2015, we committed to spend approximately $4.31and $1.47 per square foot per year of lease term for tenant improvement allowances and leasing commissions, respectively, and for the twelve months ended December 31, 2014, we committed to $3.48 and $1.53 per square foot per year of lease term for leases for tenant improvement allowances and leasing commissions, respectively. Given that our average lease size is approximately 28,000 square feet and our primary operating model is to lease large blocks of space to credit-worthy tenants, some of these items can result in significant capital outlays. Both the timing and magnitude of such future leases' expenditures have yet to be determined and are highly dependent on competitive market conditions of the respective office market at the time of lease negotiations. In particular, exclusive of our redevelopment project at 3100 Clarendon Boulevard mentioned above, there are currently three blocks of space in excess of 200,000 square feet in our Chicago and Washington, D.C portfolios that are currently vacant and may require significant tenant improvement packages to secure new tenants for those spaces, among others.

Subject to the identification and availability of attractive investment opportunities and our ability to consummate such acquisitions on satisfactory terms, acquiring new assets compatible with our investment strategy could also be a significant use of capital. In addition, our board of directors has authorized a repurchase plan for our common stock for use when we believe that our stock is trading at a meaningful discount to what we believe the estimated fair value of our net assets to be, and we may use capital resources to make purchases under this plan. As of March 31, 2015, there was $37.0 million of authorized capacity remaining on the program which may be spent prior to the program's expiration in fourth quarter 2015. Finally, although we have no debt maturities until April 2016, on a longer term basis, we expect to use capital to repay debt when obligations become due.

The amount and form of payment (cash or stock issuance) of future dividends to be paid to our stockholders will continue to be largely dependent upon (i) the amount of cash generated from our operating activities; (ii) our expectations of future cash flows; (iii) our determination of near-term cash needs for debt repayments, development projects, and selective acquisitions of new properties; (iv) the timing of significant expenditures for tenant improvements, building redevelopment projects, and general property capital improvements; (v) long-term payout ratios for comparable companies; (vi) our ability to continue to access additional sources of capital, including potential sales of our properties; and (vii) the amount required to be distributed to maintain our status as a REIT. Given the fluctuating nature of cash flows and expenditures, we may periodically borrow funds on a short-term basis to cover timing differences in cash receipts and cash disbursements.

Results of Operations

Overview

Our income from continuing operations per share on a fully diluted basis increased from $0.06 for the three months ended March 31, 2014 to $0.12 for the three months endedMarch 31, 2015. The increase was primarily due to a gain recognized on the sale of our 3900 Dallas Parkway building in Plano, Texas during the current period as well as increased revenue due to the commencement of several significant leases, expiration of operating expense abatement periods, and properties acquired since the first quarter of the prior year. Also, net income for the first quarter of 2014 included approximately $3.0 million in insurance recoveries recognized during the first quarter of 2014 related to casualty losses incurred in prior periods.

32

Comparison of the three months endedMarch 31, 2015 versus the three months endedMarch 31, 2014

Income from Continuing Operations

The following table sets forth selected data from our consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively, as well as each balance as a percentage of total revenues for the same periods presented (dollars in millions):

	March 31, 2015			%		March 31, 2014			%		$ Variance
Revenue:
Rental income	$	117.8				$	110.9				$	6.9
Tenant reimbursements	31.4					24.9					6.5
Property management fee revenue	0.5					0.5					—
Total revenues	149.7			100	%	136.3			100	%	13.4
Expense:
Property operating costs	64.2			43	%	58.3			42	%	5.9
Depreciation	36.2			24	%	33.6			25	%	2.6
Amortization	14.7			10	%	14.6			11	%	0.1
General and administrative	6.4			4	%	4.5			3	%	1.9
Real estate operating income	28.2			19	%	25.3			19	%	2.9
Other income (expense):
Interest expense	(19.0		)	13	%	(18.9		)	14	%	(0.1		)
Other income/(expense)	(0.2		)	—	%	(0.1		)	—	%	(0.1		)
Net recoveries from casualty events and litigation settlements	—			—	%	3.0			2	%	(3.0		)
Equity in income/(loss) of unconsolidated joint ventures	0.2			—	%	(0.3		)	—	%	0.5
Income from continuing operations	$	9.2		6	%	$	9.0		7	%	$	0.2
Income from discontinued operations	$	—				$	0.4				$	(0.4	)

Revenue

Rental income increased approximately $6.9 million for the three months endedMarch 31, 2015 compared to the same period in the prior year primarily due to approximately $3.9 million of additional rental income attributable to properties acquired in 2014 and 2015. The remainder of the increase is attributable to leases commencing subsequent to March 31, 2014, the most significant occurring at our 6021 Connection Drive building in Irving, Texas for approximately $1.3 million, and our Aon Center building in Chicago, Illinois for approximately $0.9 million.

Tenant reimbursements increased approximately $6.5 million for the three months endedMarch 31, 2015 compared to the same period in the prior year. The increase in tenant reimbursements is mainly driven by the expiration of operating expense abatements for several significant tenants coupled with an increase in occupancy. Reimbursement income was further impacted by an increase in our recoverable property operating costs as a result of increased property taxes and snow removal costs at certain locations. Finally, acquisitions completed during 2014 and 2015 contributed another $1.7 million to the increase as compared to the quarter ended March 31, 2014.

Expense

Property operating costs increased approximately $5.9 million for the three months endedMarch 31, 2015 compared to the same period in the prior year primarily due to approximately $2.3 million of additional operating expenses attributable to properties acquired during 2014 and 2015. In addition, we incurred higher property tax expense and utility expense of $1.9 million and $0.5 million, respectively, related to our existing portfolio of assets as compared to the same period in the prior year. We also incurred higher landscaping costs in the current period of approximately $0.7 million due mainly to ice and snow removal at certain of our existing properties in the Boston and New York office sub-markets due to an unusually harsh winter in those markets.

Depreciation expense increased approximately $2.6 million for the three months endedMarch 31, 2015 compared to the same period in the prior year. The variance is mostly attributable to depreciation on additional tenant and building improvements placed in service

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subsequent to January 1, 2014 which contributed approximately $2.1 million of the increase. The remainder of the variance is due to properties acquired during 2014 and 2015.

Amortization expense increased approximately $0.1 million for the three months endedMarch 31, 2015 compared to the same period in the prior year. The increase is attributable to additional amortization associated with intangible lease assets recognized as part of acquiring new properties during 2014 and 2015, which was largely offset by the non-recurrence of accelerated amortization expense from lease terminations in the prior period.

General and administrative expenses increased approximately $1.9 million for the three months endedMarch 31, 2015 compared to the same period in the prior year primarily due to higher salary and other incentive compensation costs driven by improved operating results and stock performance, contributing approximately $1.3 million to the increase. The remainder of the increase is due to higher legal and accounting fees in the current period.

Other Income (Expense)

Interest expense increased approximately $0.1 million for the three months endedMarch 31, 2015 compared to the same period in the prior year as a result of higher outstanding debt balances during the current year, offset by lower average interest rates due to refinancing activity during 2014.

During the three months ended March 31, 2014, we recognized approximately $3.0 million of net recoveries of casualty loss and litigation settlement expense These recoveries are non-recurring in nature and are largely associated with the receipt of insurance proceeds related to litigation settlement expense previously incurred, as well as insurance proceeds associated with damage to certain of our assets in the New York/New Jersey markets as a result of Hurricane Sandy. The timing of such reimbursements is dependent upon outside parties.

Equity in income of unconsolidated joint ventures for the three months ended March 31, 2014, included the operations of two properties, Two Park Center in Hoffman Estates, Ilinois and 8560 Upland Drive in Parker, Colorado. Two Park Center, which was subsequently sold, was vacant during the period and resulted in a loss during the prior quarter. The results of operations of the current year consist solely of the remaining property, 8560 Upland Drive, which is 100% leased.

Income from Discontinued Operations

The operations of assets that were classified as discontinued operations prior to April 1, 2014 (see Note 9 to our accompanying consolidated financial statements for a complete listing) are presented in the accompanying statement of operations as discontinued operations for all periods presented. The presentation of discontinued operations in the future is subject to the occurrence and timing of future property dispositions that meet the criteria to be classified as discontinued operations.

Funds From Operations (“FFO”), Core FFO, and Adjusted Funds from Operations (“AFFO”)

Net income calculated in accordance with U.S. generally accepted accounting principles ("GAAP") is the starting point for calculating FFO, Core FFO, and AFFO, and these metrics are non-GAAP financial measures and should not be viewed as an alternative measurement of our operating performance to net income. Management believes that accounting for real estate assets in accordance with GAAP implicitly assumes that the value of real estate assets diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, many industry investors and analysts have considered the presentation of operating results for real estate companies that use historical cost accounting to be insufficient by themselves. As a result, we believe that the use of FFO, Core FFO, and AFFO, together with the required GAAP presentation, provides a more complete understanding of our performance relative to our competitors and a more informed and appropriate basis on which to make decisions involving operating, financing, and investing activities.

We calculate FFO in accordance with the current National Association of Real Estate Investment Trusts ("NAREIT") definition as follows: Net income (computed in accordance with GAAP), excluding gains or losses from sales of property and impairment charges (including our proportionate share of any impairment charges and/or gains or losses from sales of property related to investments in unconsolidated joint ventures), plus depreciation and amortization on real estate assets (including our proportionate share of depreciation and amortization related to investments in unconsolidated joint ventures). Other REITs may not define FFO in accordance with the NAREIT definition, or may interpret the current NAREIT definition differently than we do; therefore, our computation of FFO may not be comparable to such other REITs. Further, other REITs may not compute Core FFO or AFFO in a manner comparable to ours, if computed at all.

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We calculate Core FFO as FFO (calculated as set forth above) less acquisition costs and other significant, non-recurring items, such as the infrequent and non-recurring gains or losses from the early extinguishment of debt and other financial instruments, and litigation settlements expense and casualty losses, and their subsequent insurance recoveries.

We calculate AFFO as Core FFO (calculated as set forth above) exclusive of the net effects of: (i) amortization associated with deferred financing costs; (ii) depreciation of non real estate assets; (iii) straight-line lease revenue/expense; (iv) amortization of above and below-market lease intangibles; (v) stock-based and other non-cash compensation expense; (vi) amortization of mezzanine discount income; (vii) acquisition costs, and (viii) non-incremental capital expenditures (as defined below). Our proportionate share of such adjustments related to investments in unconsolidated joint ventures are also included when calculating AFFO.

Reconciliations of net income to FFO, Core FFO, and AFFO are presented below (in thousands except per share amounts):

	Three Months Ended
	March 31, 2015			Per Share(1)			March 31, 2014			Per Share(1)
Net income attributable to Piedmont	$	19,245		$	0.12		$	9,393		$	0.06
Depreciation of real estate assets(2)	36,097			0.23			33,727			0.22
Amortization of lease-related costs(2)	14,686			0.10			14,804			0.09
(Gain)/loss on sale - wholly-owned properties, net	(10,073		)	(0.06		)	106			—
Funds From Operations	$	59,955		$	0.39		$	58,030		$	0.37
Adjustments:
Acquisition costs	144			—			66			—
Net recoveries from casualty events and litigation settlements	—			—			(3,042		)	(0.01		)
Core Funds From Operations	$	60,099		$	0.39		$	55,054		$	0.36
Adjustments:
Deferred financing cost amortization	724			—			863			0.01
Amortization of estimated fair market adjustments on notes payable	(121		)	—			—			—
Amortization of discount on senior notes	48			—			34			—
Depreciation of non real estate assets	196			—			114			—
Straight-line effects of lease revenue (2)	(4,510		)	(0.03		)	(9,412		)	(0.06		)
Stock-based and other non-cash compensation	725			—			636			—
Net effect of amortization of above and below-market in-place lease intangibles	(1,122		)	—			(1,364		)	(0.01		)
Acquisition costs	(144		)	—			(66		)	—
Non-incremental capital expenditures (3)	(10,287		)	(0.06		)	(13,821		)	(0.09		)
Adjusted Funds From Operations	$	45,608		$	0.30		$	32,038		$	0.21
Weighted-average shares outstanding – diluted	154,580						155,025

⁽¹⁾  Based on weighted average shares outstanding – diluted.

⁽²⁾  Includes amounts for wholly-owned properties, as well as such amounts for our proportionate ownership in unconsolidated joint ventures.

⁽³⁾  Piedmont defines non-incremental capital expenditures as capital expenditures of a recurring nature related to tenant improvements, leasing commissions, and building capital that do not incrementally enhance the underlying assets' income generating capacity. Tenant improvements, leasing commissions, building capital and deferred lease incentives incurred to lease space that was vacant at acquisition, leasing costs for spaces vacant for greater than one year, leasing costs for spaces at newly acquired properties for which in-place leases expire shortly after acquisition, improvements associated with the expansion of a building, and renovations that either change the underlying classification from a Class B to a Class A property or enhance the marketability of a building are excluded from this measure.

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Property and Same Store Net Operating Income (Cash Basis)

Property Net Operating Income on a cash basis ("Property NOI") is a non-GAAP measure which we use to assess our operating results. It is calculated as real estate operating income with the add-back of corporate general and administrative expense, depreciation and amortization, impairment losses, and the deduction of income and expense associated with property management performed by Piedmont for other organizations. We present this measure on a cash basis, which eliminates the effects of straight lined rents and fair value lease revenue. We use this measure as a proxy for the cash generated by our real estate properties. Same Store Net Operating Income on a cash basis ("Same Store NOI") is another non-GAAP measure very similar to Property NOI, however, Same Store NOI only reflects Property NOI attributable to the properties owned or placed in service during the entire span of the current and prior year reporting periods. Same Store NOI excludes amounts attributable to unconsolidated joint venture assets. We believe Same Store NOI is an important measure because it allows us to compare the cash flows generated by our same real estate properties from one period to another. Other REITs may calculate Property NOI and Same Store NOI differently, and our calculations should not be compared to that of other REITs.

The following table sets forth our Property NOI and Same Store NOI with a reconciliation to net income attributable to Piedmont (GAAP basis) for the three months endedMarch 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended
	March 31, 2015			March 31, 2014
Net income attributable to Piedmont (GAAP basis)	$	19,245		$	9,393
Net income attributable to noncontrolling interest	4			4
Interest expense	19,016			18,926
Depreciation (1)	36,292			33,841
Amortization (1)	14,686			14,804
Acquisition costs	144			66
Net recoveries of casualty events and litigation settlements (1)	—			(3,042		)
(Gain)/loss on sale of properties (1)	(10,073		)	106
General & administrative expenses(1)	6,416			4,582
Management fee revenue	(330		)	(259		)
Other (income)/expense(1)	38			30
Straight line rent effects of lease revenue(1)	(4,510		)	(9,412		)
Amortization of lease-related intangibles(1)	(1,122		)	(1,364		)
Property NOI (cash basis)	$	79,806		$	67,675
Change period over period in Property NOI (cash basis)	17.9		%	N/A
Net operating loss/(income) from:
Acquisitions(2)	(2,665		)	—
Dispositions(3)	(230		)	(1,560		)
Other investments(4)	(296		)	383
Same Store NOI (cash basis)	$	76,615		$	66,498
Change period over period in Same Store NOI (cash basis)	15.2		%	N/A

⁽¹⁾  Includes amounts attributable to consolidated properties, including discontinued operations, and our proportionate share of amounts attributable to unconsolidated joint ventures.

⁽²⁾  Acquisitions consist of 5 Wall Street in Burlington, Massachusetts, purchased on June 27, 2014; 1155 Perimeter Center West in Atlanta, Georgia, purchased on August 28, 2014; TownPark Land in Lake Mary, Florida, purchased on November 21, 2014; and Park Place on Turtle Creek in Dallas, Texas, purchased on January 16, 2015.

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⁽³⁾  Dispositions consist of 11107 and 11109 Sunset Hills Road in Reston, Virginia, sold on March 19, 2014; 1441 West Long Lake Road and 4685 Investment Drive in Troy, Michigan, sold on April 30, 2014; 2020 West 89th Street in Leawood, Kansas, sold on May 19, 2014; and 3900 Dallas Parkway in Plano, Texas, sold on January 30, 2015^.  

⁽⁴⁾  Other investments consist of operating results from our investments in unconsolidated joint ventures and our redevelopment project at 3100 Clarendon Boulevard in Arlington, Virginia.

Overview

Our portfolio is a national portfolio located in several geographic markets. We typically lease space to large, credit-worthy corporate or governmental tenants on a long-term basis. Our average lease is approximately 28,000 square feet with 7.0 years of lease term remaining as of March 31, 2015. As a result, leased percentage, as well as rent roll ups and roll downs, which we experience as a result of re-leasing, can fluctuate widely between markets, between buildings, and between tenants within a given market depending on when a particular lease is scheduled to expire. We have re-leased a significant portion of our portfolio over the last several years; however, as rental abatement periods related to certain significant renewals and replacement leases began to expire during 2014, Property NOI on a sequential quarter basis began to improve and culminated in a 17.9% increase in Property NOI and a 15.2% increase in Same Store NOI for the three months ended March 31, 2015, as compared to the three months ended March 31, 2014. On a prospective basis, we anticipate that Property NOI will continue to improve in 2015 as certain significant leases for currently vacant space commence and rental abatement periods expire. Further, any absorption of currently vacant space in the portfolio due to additional new leasing activity could also favorably impact Property NOI and/or Same Store NOI comparisons depending on the timing of commencement dates and abatement periods of the new leases.

Leased Percentage

Excluding one unconsolidated joint venture and one property that was not in service due to a redevelopment project as of March 31, 2015, our portfolio in total was 88.8% leased as of March 31, 2015, up from 87.7% leased as of December 31, 2014, and up from 86.7% as of March 31, 2014. As of March 31, 2015, scheduled expirations for the portfolio as a whole for 2015 and 2016 represented 2.0% and 5.9%, respectively, of our Annualized Lease Revenue; therefore, our current leasing efforts are primarily focused on leasing currently vacant space. To the extent we are able to execute new leases for currently vacant space, offset by scheduled expirations, such new leasing should favorably impact our leased percentage, Property NOI, and possibly our Same Store NOI comparisons once any associated abatement periods expire.

Impact of Downtime, Abatement Periods, and Rental Rate Changes

We have re-leased a significant portion of our portfolio over the past several years, and as of March 31, 2015, we still had approximately 500,000 square feet of executed leases related to vacant space which had not yet commenced. Commencement of new leases typically occurs 6-24 months from the lease execution date, after refurbishment of the space is completed. The downtime between a lease expiration and the new lease's commencement can negatively impact Property NOI and Same Store NOI. In addition, office leases, both new and lease renewals, typically contain upfront rental and/or operating expense abatement periods which delay the cash flow benefits of the lease even after the new lease or renewal has commenced. As of March 31, 2015, approximately 1.7 million square feet of our commenced leases were still in some form of abatement. Lastly, if we are unable to replace expiring leases with new or renewal leases at rental rates equal to or greater than the expiring rates, rental rate roll downs can also negatively impact Property NOI and Same Store NOI comparisons. As mentioned above, our geographically diverse portfolio and large block tenant model result in rent roll ups and roll downs that can fluctuate widely on a market by market basis; however, given the large volume of leasing activity over the last several years, we estimate that our portfolio, taken as a whole, is currently at market. Property NOI and Same store NOI comparisons for any given period may still fluctuate as a result of rent roll ups and roll downs, however, depending on the leasing activity in individual geographic markets during the respective period.

Election as a REIT

We have elected to be taxed as a REIT under the Code and have operated as such beginning with our taxable year ended December 31, 1998. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted REIT taxable income, computed without regard to the dividends-paid deduction and by excluding net capital gains attributable to our stockholders, as defined by the Code. As a REIT, we generally will not be subject to federal income tax on income that we distribute to our stockholders. If we fail to qualify as a REIT in any taxable year, we may be subject to federal income taxes on our taxable income for that year and for the four years following the year during which qualification is lost and/or penalties, unless the IRS grants us relief under certain statutory provisions. Such an event could materially adversely affect our net income and net cash available for distribution to our stockholders. However, we believe that we are organized and operate in such a manner as to qualify for treatment as a REIT and intend to continue to operate in the foreseeable future in such a manner that we will remain qualified as a REIT for federal income tax purposes. We have elected to treat Piedmont Office Holdings, Inc. (“POH”),

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a wholly-owned subsidiary of Piedmont, as a taxable REIT subsidiary. We perform non-customary services for tenants of buildings that we own, including solar power generation, and real estate and non-real estate related-services; however, any earnings related to such services performed by our taxable REIT subsidiary are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, our investments in taxable REIT subsidiaries cannot exceed 25% of the value of our total assets.

Inflation

We are exposed to inflation risk, as income from long-term leases is the primary source of our cash flows from operations. There are provisions in the majority of our tenant leases that are intended to protect us from, and mitigate the risk of, the impact of inflation. These provisions include rent steps, reimbursement billings for operating expense pass-through charges, real estate tax, and insurance reimbursements on a per square-foot basis, or in some cases, annual reimbursement of operating expenses above certain per square-foot allowance. However, due to the long-term nature of the leases, the leases may not readjust their reimbursement rates frequently enough to fully cover inflation.

Off-Balance Sheet Arrangements

We are not dependent on off-balance sheet financing arrangements for liquidity. As of March 31, 2015, our off-balance sheet arrangements consist of one investment in an unconsolidated joint venture and operating lease obligations related to ground leases at two of our properties. The unconsolidated joint venture in which we currently invest is prohibited by its governing documents from incurring debt. For further information regarding our commitments under operating lease obligations, see the Contractual Obligations table below.

Application of Critical Accounting Policies

Our accounting policies have been established to conform with GAAP. The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. These judgments affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different, it is possible that different accounting policies would have been applied, thus, resulting in a different presentation of the financial statements. Additionally, other companies may utilize different estimates that may impact comparability of our results of operations to those of companies in similar businesses. The critical accounting policies outlined below have been discussed with members of the Audit Committee of the board of directors.

Investment in Real Estate Assets

We are required to make subjective assessments as to the useful lives of our depreciable assets. We consider the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income attributable to Piedmont. The estimated useful lives of our assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Land improvements	20-25 years
Tenant improvements	Shorter of economic life or lease term
Furniture, fixtures, and equipment	3-5 years
Intangible lease assets	Lease term

Allocation of Purchase Price of Acquired Assets

Upon the acquisition of real properties, we allocate the purchase price of properties to acquired tangible assets, consisting of land and building, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases and the value of in-place leases, based on their estimated fair values.

The estimated fair values of the tangible assets of an acquired property (which includes land and buildings) are determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land and building based on management's determination of the estimated fair value of these assets. We determine the as-if-vacant estimated fair value of a property using methods similar to those used by independent appraisers. Factors considered by us in performing these analyses include an estimate

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of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, we include real estate taxes, insurance, and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. We also estimate the cost to execute similar leases including leasing commissions, legal, and other related costs.

The estimated fair values of above-market and below-market in-place lease values are recorded based on the present value (using an interest rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) our estimate of market lease rates for the corresponding in-place leases, measured over a period equal to the remaining terms of the leases, taking into consideration the probability of renewals for any below-market leases. The capitalized above-market and below-market lease values are recorded as intangible lease assets or liabilities and amortized as an adjustment to rental income over the remaining terms of the respective leases.

The estimated fair values of in-place leases include direct costs associated with obtaining a new tenant, opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease, and tenant relationships. Direct costs associated with obtaining a new tenant include commissions, tenant improvements, and other direct costs and are estimated based on our consideration of current market costs to execute a similar lease. These direct costs are included in deferred lease costs in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases. The value of opportunity costs is calculated using the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. Customer relationships are valued based on expected renewal of a lease or the likelihood of obtaining a particular tenant for other locations. These lease intangibles are included in intangible lease assets in the accompanying consolidated balance sheets and are amortized to expense over the remaining terms of the respective leases.

Estimating the fair values of the tangible and intangible assets requires us to estimate market lease rates, property operating expenses, carrying costs during lease-up periods, discount and capitalization rates, market absorption periods, and the number of years the property is held for investment. The use of inappropriate estimates would result in an incorrect assessment of our purchase price allocations, which would impact the amount of our reported net income attributable to Piedmont.

Valuation of Real Estate Assets and Investments in Joint Ventures Which Hold Real Estate Assets

We continually monitor events and changes in circumstances that could indicate that the carrying amounts of the real estate and related intangible assets, both operating properties and properties under construction, in which we have an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present for wholly-owned properties, which indicate that the carrying amounts of real estate and related intangible assets may not be recoverable, we assess the recoverability of these assets by determining whether the carrying value will be recovered from the undiscounted future operating cash flows expected from the use of the asset and its eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying value, we adjust the real estate and related intangible assets to the estimated fair value and recognize an impairment loss. For our investments in unconsolidated joint ventures, we assess the estimated fair value of our investment, as compared to our carrying amount. If we determine that the carrying value is greater than the estimated fair value at any measurement date, we must also determine if such a difference is temporary in nature. Value fluctuations which are “other than temporary” in nature are then recorded to adjust the carrying value to the estimated fair value amount.

Projections of expected future cash flows require that we estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including capitalization and discount rates, could result in an incorrect assessment of the property’s estimated fair value and, therefore, could result in the misstatement of the carrying value of our real estate and related intangible assets and our reported net income attributable to Piedmont.

Goodwill

Goodwill is the excess of cost of an acquired entity over the amounts specifically assigned to assets acquired and liabilities assumed in purchase accounting for business combinations, as well as costs incurred as part of the acquisition. We test the carrying value of our goodwill for impairment on an annual basis, or on an interim basis if an event occurs or circumstances change that would indicate the carrying amount may be impaired. Such interim circumstances may include, but are not limited to, significant adverse changes in legal factors or in the general business climate, adverse action or assessment by a regulator, unanticipated competition, the loss of key personnel, or persistent declines in an entity’s stock price below carrying value of the entity. We have the option, should we choose to use it, to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the estimated fair value of the reporting unit is less than its carrying amount.

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If, after assessing the totality of events or circumstances, we conclude that the estimated fair value is greater than the carrying amount, then performing the two-step impairment test is unnecessary. However, if we chose to forgo the availability of the qualitative analysis, the test prescribed by authoritative accounting guidance is a two-step test. The first step involves comparing the estimated fair value of the entity to its carrying value, including goodwill. Estimated fair value is determined by adjusting the trading price of the stock for a control premium, if necessary, multiplied by the common shares outstanding. If such calculated estimated fair value exceeds the carrying value, no further procedures or analysis is required. However, if the carrying value exceeds the calculated fair value, goodwill is potentially impaired and step two of the analysis would be required. Step two of the test involves calculating the implied fair value of goodwill by deducting the estimated fair value of all tangible and intangible net assets of the entity from the entity’s estimated fair value calculated in step one of the test. If the implied value of the goodwill (the remainder left after deducting the estimated fair values of the entity from its calculated overall estimated fair value in step one of the test) is less than the carrying value of goodwill, an impairment loss would be recognized. We have determined through the testing noted above that there are no issues of impairment related to our goodwill as of March 31, 2015.

Investment in Variable Interest Entities

Variable Interest Entities (“VIEs”) are defined by GAAP as entities in which equity investors do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support from other parties. If an entity is determined to be a VIE, it must be consolidated by the primary beneficiary. The primary beneficiary is the enterprise that has the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, absorbs the majority of the entity’s expected losses, or receives a majority of the entity’s expected residual returns. Generally, expected losses and expected residual returns are the anticipated negative and positive variability, respectively, in the estimated fair value of the VIE’s net assets. When we make an investment, we assess whether the investment represents a variable interest in a VIE and, if so, whether we are the primary beneficiary of the VIE. Incorrect assumptions or assessments may result in an inaccurate determination of the primary beneficiary. The result could be the consolidation of an entity acquired or formed in the future that would otherwise not have been consolidated or the non-consolidation of such an entity that would otherwise have been consolidated.

We evaluate each investment to determine whether it represents variable interests in a VIE. Further, we evaluate the sufficiency of the entities’ equity investment at risk to absorb expected losses, and whether as a group, the equity has the characteristics of a controlling financial interest. See Note 6 to our accompanying consolidated financial statements for further detail on our investment in variable interest entities as of March 31, 2015.

Interest Rate Derivatives

We periodically enter into interest rate derivative agreements to hedge our exposure to changing interest rates on variable rate debt instruments. As required by GAAP, we record all derivatives on the balance sheet at estimated fair value. We reassess the effectiveness of our derivatives designated as cash flow hedges on a regular basis to determine if they continue to be highly effective and also to determine if the forecasted transactions remain highly probable. Currently, we do not use derivatives for trading or speculative purposes.

The changes in estimated fair value of interest rate swap agreements designated as effective cash flow hedges are recorded in other comprehensive income (“OCI”), and subsequently reclassified to earnings when the hedged transactions occur. Changes in the estimated fair values of derivatives designated as cash flow hedges that do not qualify for hedge accounting treatment, if any, would be recorded as gain/(loss) on interest rate swap in the consolidated statements of income. The estimated fair value of the interest rate derivative agreement is recorded as interest rate derivative asset or as interest rate derivative liability in the accompanying consolidated balance sheets. Amounts received or paid under interest rate derivative agreements are recorded as interest expense in the consolidated income statements as incurred. All of our interest rate derivative agreements as of March 31, 2015 are designated as effective cash flow hedges. See Note 5 to our accompanying consolidated financial statements for further detail on our interest rate derivatives.

Stock-based Compensation

We have issued stock-based compensation in the form of restricted stock to our employees and directors. For employees, such compensation has been issued pursuant to our Long-term Incentive Compensation ("LTIC") program. The LTIC program is comprised of an annual deferred stock grant component and a multi-year performance share component. Awards granted pursuant to the annual deferred stock component are considered equity awards and expensed straight-line over the vesting period, with issuances recorded as a reduction to additional paid in capital. Awards granted pursuant to the performance share component are considered liability awards and are expensed over the service period, with issuances recorded as a reduction to accrued expense. The compensation expense recognized related to both of these award types is recorded as property operating costs for those employees whose job is related to property operation and as general and administrative expense for all other employees and

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directors in the accompanying consolidated statements of income. See Note 10 to our accompanying consolidated financial statements for further detail on our stock-based compensation.

Recent Accounting Pronouncements

The Financial Accounting Standards Board has issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). The amendments in ASU 2014-09 change the criteria for the recognition of revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services using a five-step determination process. Steps 1 through 5 involve (i) identifying contracts with a customer, (ii) identifying the performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations, and (v) recognizing revenue as an entity satisfies a performance obligation. Additionally, lease contracts are specifically excluded from ASU 2014-09. The amendments in ASU 2014-09 are effective in the first quarter of 2017 for us, and early adoption is not permitted. We are currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810), Amendments to the Consolidation Analysis ("ASU 2015-02"). The amendments in ASU 2015-02 modifies the consolidation analysis of certain types of entities. Specifically, ASU 2015-02 changes the assessment criteria of whether limited partnerships are VIEs, eliminates the presumption that general partners should consolidate a limited partner, eliminates certain conditions from the evaluation of whether a fee paid to a decision maker constitutes a VIE, and changes the evaluation regarding the impact of related parties in the primary beneficiary determination of a VIE. The amendments in ASU 2015-02 are effective for us in the first quarter of 2016, and we are currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The amendments in ASU 2015-03 require debt issuance costs to be presented in the balance sheet as a reduction to the underlying debt instrument, as opposed to a separate asset. The amendments do not change the method by which such costs are amortized against earnings, nor do they change their classification in the consolidated statements of income, as a component of interest expense. The amendments in ASU 2015-03 are effective in the first quarter of 2016 for us, and we are currently evaluating the potential impact of adoption.

Related-Party Transactions and Agreements

There were no related-party transactions during the three months endedMarch 31, 2015.

Contractual Obligations

Our contractual obligations as of March 31, 2015 were as follows (in thousands):

	Payments Due by Period
Contractual Obligations	Total		Less than 1 year			1-3 years			3-5 years			More than 5 years
Long-term debt(1)	$	2,328,787	$	105,824	(2)	$	672,317	(3)	$	772,001	(4)	$	778,645	(5)
Operating lease obligations(6)	42,763		451			902			902			40,508
Total	$	2,371,550	$	106,275		$	673,219		$	772,903		$	819,153

⁽¹⁾  Amounts include principal payments only and balances outstanding as of March 31, 2015, not including unamortized issuance discounts or estimated fair value adjustments. We made interest payments, including payments under our interest rate swaps, of approximately $19.3 million during the three months endedMarch 31, 2015, and expect to pay interest in future periods on outstanding debt obligations based on the rates and terms disclosed herein and in Note 4 of our accompanying consolidated financial statements.

⁽²⁾  On April 10, 2015, Piedmont repaid in full the balance on the $105.0 Million Fixed-Rate Loan.

⁽³⁾  Includes the balance outstanding as of March 31, 2015 of the $500 Million Unsecured Line of Credit. However, Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of August 21, 2017) provided Piedmont is not then in default and upon payment of extension fees.

⁽⁴⁾  Includes the $300 Million Unsecured 2013 Term Loan which has a stated variable rate; however, we have entered into interest rate swap agreements which effectively fix, exclusive of changes to our credit rating, the rate on this portion of the facility to 2.78% through maturity. As such, we estimate incurring, exclusive of changes to our credit rating, approximately $8.3 million per annum in total interest (comprised of combination of variable contractual rate and settlements under interest rate swap agreements) through maturity in January 2019.

⁽⁵⁾  Includes the $300 Million Unsecured 2011 Term Loan which has a stated variable rate; however, we have entered into interest rate swap agreements which effectively fix, exclusive of changes to our credit rating, the rate on this facility to 2.39% through the original maturity date of November 22,

41

2016. Additionally, Piedmont entered into three forward starting swaps to effectively fix, absent any changes to Piedmont's credit rating, the rate of this facility to 3.35% for the extension period (November 22, 2016 to January 15, 2020). As such, we estimate incurring, exclusive of changes to our credit rating, approximately $7.2 million per annum in total interest (comprised of combination of variable contractual rate and settlements under interest rate swap agreements) through the original maturity of the debt facility in November 2016, and approximately $10.1 million per annum for the extension period ending in January 2020.

⁽⁶⁾  Two properties (the 2001 NW 64th Street building in Ft. Lauderdale, Florida and the River Corporate Center building) are subject to ground leases with expiration dates of 2048 and 2101, respectively. The aggregate remaining payments required under the terms of these operating leases as of March 31, 2015 are presented above.

Commitments and Contingencies

We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 8 of our consolidated financial statements for further explanation. Examples of such commitments and contingencies include:

• Commitments Under Existing Lease Agreements;

• Contingencies Related to Tenant Audits/Disputes; and

• Letters of Credit.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our future income, cash flows, and estimated fair values of our financial instruments depend in part upon prevailing market interest rates. Market risk is the exposure to loss resulting from changes in interest rates, foreign currency, exchange rates, commodity prices, and equity prices. Our potential for exposure to market risk includes interest rate fluctuations in connection with borrowings under our $500 Million Unsecured Line of Credit, our $300 Million Unsecured 2011 Term Loan, the $300 Million Unsecured 2013 Term Loan, and the $170 Million Unsecured 2015 Term Loan. As a result, the primary market risk to which we believe we are exposed is interest rate risk. Many factors, including governmental monetary and tax policies, domestic and international economic and political considerations, and other factors that are beyond our control contribute to interest rate risk. Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flow primarily through a low-to-moderate level of overall borrowings, as well as managing the variability in rate fluctuations on our outstanding debt. As such, as of the time of this filing, all of our debt other than the $500 Million Unsecured Line of Credit and the $170 Million Unsecured 2015 Term Loan is based on fixed, or effectively-fixed, interest rates to hedge against instability in the credit markets.

We do not enter into derivative or interest rate transactions for speculative purposes, as such all of our debt and derivative instruments were entered into for other than trading purposes. The estimated fair value of our debt as of March 31, 2015 and December 31, 2014 was approximately $2.4 billion, and $2.3 billion, respectively. Our interest rate swap agreements in place at March 31, 2015 carried a notional amount totaling $1.4 billion with a weighted-average fixed interest rate (not including the corporate credit spread) of 1.87%. Our interest swap agreements in place at December 31, 2014 carried a notional amount totaling $1.2 billion with a weighted-average fixed interest rate (not including the corporate credit spread) of 1.77%.

As of March 31, 2015, all of our outstanding debt, except for amounts outstanding under our $500 Million Unsecured Line of Credit and the $170 Million Unsecured 2015 Term Loan, was subject to fixed, or effectively fixed, interest rates. After giving effect to the pay off of the $105.0 Million Fixed-Rate Loan secured by the US Bancorp building which occurred on April 10, 2015, our total outstanding debt subject to fixed, or effectively fixed, interest rates has an average effective interest rate of approximately 3.81% per annum with expirations ranging from 2016 to 2024. A change in the market interest rate impacts the net financial instrument position of our fixed-rate debt portfolio but has no impact on interest incurred or cash flows.

As of March 31, 2015, we had $363.0 million outstanding on our $500 Million Unsecured Line of Credit. Our $500 Million Unsecured Line of Credit currently has a stated rate of LIBOR plus 1.175% per annum or the prime rate, at our discretion. Draws outstanding as of March 31, 2015 were subject to a blended rate of LIBOR + 1.175% as of March 31, 2015. The current stated interest rate spread on the $170 Million Unsecured 2015 Term Loan is LIBOR plus 1.125% (based on our current corporate credit rating). To the extent that we borrow additional funds in the future under the $500 Million Unsecured Line of Credit or potential future variable-rate lines of credit, we would have exposure to increases in interest rates, which would potentially increase our cost of debt. Additionally, a 1.0% increase in variable interest rates on these outstanding borrowings as of March 31, 2015 would increase interest expense approximately $5.3 million on a per annum basis.

42

ITEM 4. CONTROLS AND PROCEDURES

Management’s Conclusions Regarding the Effectiveness of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of management, including the Principal Executive Officer and the Principal Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as defined in Rule 15d-15(e) of the Securities Exchange Act of 1934 (the “Exchange Act”) as of the end of the quarterly period covered by this report. Based upon that evaluation, the Principal Executive Officer and the Principal Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this quarterly report in providing a reasonable level of assurance that information we are required to disclose in the reports we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in applicable SEC rules and forms, including providing a reasonable level of assurance that information required to be disclosed by us in the reports we file under the Exchange Act is accumulated and communicated to our management, including the Principal Executive Officer and the Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended March 31, 2015 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Piedmont is not subject to any material pending legal proceedings. However, we are subject to routine litigation arising in the ordinary course of owning and operating real estate assets. Our management expects that these ordinary routine legal proceedings will be covered by insurance and does not expect these legal proceedings to have a material adverse effect on our financial condition, results of operations, or liquidity. Additionally, management is not aware of any legal proceedings contemplated by governmental authorities.

ITEM 1A. RISK FACTORS

There have been no known material changes from the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2014.

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

(a) There were no unregistered sales of equity securities during the first quarter 2015.

(b) Not applicable.

(c) During the quarter ended March 31, 2015, Piedmont repurchased 176,723 shares of its common stock in the open market, in order to reissue such shares under its dividend reinvestment plan (the "DRP") at an average price of $18.36 per share. The aggregate stock repurchases for the quarter ended March 31, 2015 are as follows:

Period	Total Number of Shares Purchased (in 000’s)	Average Price Paid per Share		Total Number of Shares  Purchased as Part of Publicly Announced Plan (in 000’s) (1)	Maximum Approximate Dollar Value of Shares Available That May Yet Be Purchased Under the Plan (in 000’s) (1)
January 1, 2015 to January 31, 2015	—	$	—	—	$	—
February 1, 2015 to February 28, 2015	—	$	—	—	$	—
March 1, 2015 to March 31, 2015	177	$	18.36	—	$	37,040	(1)
Total	177	$	18.36	—

⁽¹⁾  Under our amended and restated DRP, as set forth in a Current Report on Form 8-K filed February 24, 2011, we have the option to either issue shares that we purchase in the open market or issue shares directly from Piedmont from authorized but unissued shares. Such election will take place at the settlement of each quarterly dividend in which there are participants in our DRP, and may change from quarter to quarter based on our judgment of the best use of proceeds for Piedmont. Therefore, the "Maximum Approximate Dollar Value of Shares Available That May Yet Be Purchased Under the Program" relates only to our Amended and Restated Stock Repurchase Plan authorizing the repurchase of up to $150 million in stock repurchases. The stock repurchase plan was announced on November 3, 2011 and is currently scheduled to expire during the fourth quarter 2015, and is separate from shares purchased for DRP issuance.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

Not applicable.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

44

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

The Exhibits required to be filed with this report are set forth on the Exhibit Index to First Quarter 2015 Form 10-Q of Piedmont Office Realty Trust, Inc. attached hereto.

45

SIGNATURES

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

		PIEDMONT OFFICE REALTY TRUST, INC.
		(Registrant)
Dated:	April 29, 2015	By:	/s/ Robert E. Bowers
			Robert E. Bowers
			Chief Financial Officer and Executive Vice President
			(Principal Financial Officer and Duly Authorized Officer)

46

EXHIBIT INDEX

TO

FIRST QUARTER 2015

FORM 10-Q

OF

PIEDMONT OFFICE REALTY TRUST, INC

Exhibit Number	Description of Document
3.1	Third Articles of Amendment and Restatement of Piedmont Office Realty Trust, Inc. (the “Company”) (incorporated by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009 filed on March 16, 2010)
3.2	Articles of Amendment of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.3	Articles Supplementary of the Company effective June 30, 2011 (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on July 6, 2011)
3.4	Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed on January 22, 2010)
10.1	Term Loan Agreement, dated as of March 27, 2015, among Piedmont Operating Partnership, LP, as Borrower, Piedmont Office Realty Trust, Inc., as Parent, JP Morgan Securities, LLC, U.S. Bank National Association and SunTrust Robinson Humphrey, Inc., as Co-Lead Arrangers and Book Managers; JPMorgan Chase Bank, as Agent; U.S. Bank National Association, as Syndication Agent; SunTrust Bank, as Documentation Agent; and the financial institutions initially signatory thereto and their assignees, as Lenders (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on April 2, 2015)
31.1	Rule 13a-14(a)/15d-14(a) Certification, executed by Donald A. Miller, CFA, Principal Executive Officer of the Company
31.2	Rule 13a-14(a)/15d-14(a) Certification, executed by Robert E. Bowers, Principal Financial Officer of the Company
32.1	Certification required by Rule 13a-14(b)/15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, executed by Donald A. Miller, CFA, Chief Executive Officer and President of the Company
32.2	Certification required by Rule 13a-14(b)/15d-14(b) and Section 1350 of Chapter 63 of Title 18 of the United States Code, executed by Robert E. Bowers, Chief Financial Officer and Executive Vice-President of the Company
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase

47

EX-31.1

EXHIBIT 31.1

PRINCIPAL EXECUTIVE OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Donald A. Miller, CFA, certify that:

1. I have reviewed this Form 10-Q for the quarter ended March 31, 2015 of Piedmont Office Realty Trust, Inc.;

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

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

4. The registrant’s other certifying officer 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 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.

Dated: April 29, 2015

By:	/s/ Donald A. Miller, CFA
	Donald A. Miller, CFA
	Chief Executive Officer and President (Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

PRINCIPAL FINANCIAL OFFICER CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert E. Bowers, certify that:

1. I have reviewed this Form 10-Q for the quarter ended March 31, 2015 of Piedmont Office Realty Trust, Inc.;

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

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

4. The registrant’s other certifying officer 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 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.

Dated: April 29, 2015

By:	/s/ Robert E. Bowers
	Robert E. Bowers
	Chief Financial Officer and Executive Vice President (Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, Donald A. Miller, CFA, Chief Executive Officer of the Registrant, hereby certifies, 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 and belief:

(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 the Registrant.

By:	/s/ Donald A. Miller, CFA
	Donald A. Miller, CFA
	Chief Executive Officer and President
	April 29, 2015

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. 1350)

In connection with the Report of Piedmont Office Realty Trust, Inc. (the “Registrant”) on Form 10-Q for the quarter ended March 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), the undersigned, Robert E. Bowers, Chief Financial Officer of the Registrant, hereby certifies, 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 and belief:

(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 the Registrant.

By:	/s/ Robert E. Bowers
	Robert E. Bowers
	Chief Financial Officer and Executive Vice President
	April 29, 2015

XML

Fair Value Measurement of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 520		$ 430
Interest rate swap liability	19,416		6,417
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	7,479	[1]	12,306	[1]
Tenant receivables, net	30,132	[1]	27,711	[1]
Restricted cash and escrows	671	[1]	5,679	[1]
Accounts payable and accrued expenses	16,098	[1]	14,395	[1]
Debt	2,326,109		2,277,589
Interest Rate Swap [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	520		430
Interest rate swap liability	19,416		6,417
Level 1 [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	7,479	[1]	12,306	[1]
Tenant receivables, net	30,132	[1]	27,711	[1]
Restricted cash and escrows	671	[1]	5,679	[1]
Accounts payable and accrued expenses	16,098	[1]	14,395	[1]
Level 2 [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt	2,373,488		2,314,020
Level 2 [Member] | Interest Rate Swap [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	520		430
Interest rate swap liability	$ 19,416		$ 6,417

[1] For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to their short-term maturity.

XML

Guarantor and Non-Guarantor Financial Information - Condensed Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets:
Land	$ 707,340	$ 702,800
Buildings and improvements, less accumulated depreciation	3,234,495	3,224,178
Intangible lease assets, less accumulated amortization	69,254	70,177
Construction in progress	83,853	63,393
Total real estate assets held for sale, net		14,544
Total real estate assets	4,094,942	4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,820	7,798
Cash and cash equivalents	7,479	12,306	9,271	6,973
Tenant and straight-line rent receivables, net	205,472	197,243
Advances to affiliates	0	0
Investment in subsidiary	0	0
Notes receivable	0	0
Prepaid expenses, restricted cash, escrows, and other assets	27,550	33,499
Goodwill	180,097	180,097
Interest rate swaps	520	430
Deferred financing costs, net	7,391	7,667
Deferred lease costs, net	288,591	280,105
Other assets held for sale	0	1,264
Total assets	4,819,862	4,795,501
Liabilities:
Debt, net	2,326,109	2,277,589
Accounts payable, accrued expenses, and accrued capital expenditures	119,466	133,988
Advances from affiliates	0	0
Deferred income	25,970	22,215
Intangible lease liabilities, net	42,978	43,277
Interest rate swaps	19,416	6,417
Total liabilities	2,533,939	2,483,486
Stockholders’ Equity:
Common stock	1,543	1,543
Additional paid-in capital	3,667,574	3,666,182
Cumulative distributions in excess of earnings	(1,378,786)	(1,365,620)
Other comprehensive income	(5,437)	8,301
Piedmont stockholders’ equity	2,284,894	2,310,406
Noncontrolling interest	1,029	1,609
Total stockholders’ equity	2,285,923	2,312,015		2,461,159
Total liabilities and stockholders’ equity	4,819,862	4,795,501
Issuer [Member]
Assets:
Land	81,406	81,406
Buildings and improvements, less accumulated depreciation	438,933	442,034
Intangible lease assets, less accumulated amortization	1,676	1,812
Construction in progress	3,032	1,355
Total real estate assets held for sale, net		14,544
Total real estate assets	525,047	541,151
Investments in and amounts due from unconsolidated joint ventures	7,820	7,798
Cash and cash equivalents	3,879	8,143	6,132	3,261
Tenant and straight-line rent receivables, net	37,756	37,238
Advances to affiliates	6,142,933	6,084,243
Investment in subsidiary	0	0
Notes receivable	161,350	161,350
Prepaid expenses, restricted cash, escrows, and other assets	6,129	10,912
Goodwill	180,097	180,097
Interest rate swaps	520	430
Deferred financing costs, net	7,023	7,242
Deferred lease costs, net	31,445	31,340
Other assets held for sale		1,264
Total assets	7,103,999	7,071,208
Liabilities:
Debt, net	1,901,208	1,852,434
Accounts payable, accrued expenses, and accrued capital expenditures	16,732	19,403
Advances from affiliates	392,696	376,122
Deferred income	5,150	4,998
Intangible lease liabilities, net	0	0
Interest rate swaps	19,416	6,417
Total liabilities	2,335,202	2,259,374
Stockholders’ Equity:
Common stock	0	0
Additional paid-in capital	3,842,399	3,874,757
Cumulative distributions in excess of earnings	931,835	928,776
Other comprehensive income	(5,437)	8,301
Piedmont stockholders’ equity	4,768,797	4,811,834
Noncontrolling interest	0	0
Total stockholders’ equity	4,768,797	4,811,834
Total liabilities and stockholders’ equity	7,103,999	7,071,208
Guarantor [Member]
Assets:
Land	0	0
Buildings and improvements, less accumulated depreciation	0	0
Intangible lease assets, less accumulated amortization	0	0
Construction in progress	0	0
Total real estate assets held for sale, net		0
Total real estate assets	0	0
Investments in and amounts due from unconsolidated joint ventures	0	0
Cash and cash equivalents	250	1,790	150	150
Tenant and straight-line rent receivables, net	0	0
Advances to affiliates	1,284,521	1,282,443
Investment in subsidiary	3,846,399	3,878,811
Notes receivable	0	0
Prepaid expenses, restricted cash, escrows, and other assets	116	0
Goodwill	0	0
Interest rate swaps	0	0
Deferred financing costs, net	0	0
Deferred lease costs, net	0	0
Other assets held for sale		0
Total assets	5,131,286	5,163,044
Liabilities:
Debt, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	674	465
Advances from affiliates	4,909,707	4,909,362
Deferred income	0	0
Intangible lease liabilities, net	0	0
Interest rate swaps	0	0
Total liabilities	4,910,381	4,909,827
Stockholders’ Equity:
Common stock	1,543	1,543
Additional paid-in capital	3,670,447	3,670,236
Cumulative distributions in excess of earnings	(3,451,085)	(3,418,562)
Other comprehensive income	0	0
Piedmont stockholders’ equity	220,905	253,217
Noncontrolling interest	0	0
Total stockholders’ equity	220,905	253,217
Total liabilities and stockholders’ equity	5,131,286	5,163,044
Non-Guarantor Subsidiaries [Member]
Assets:
Land	625,934	621,394
Buildings and improvements, less accumulated depreciation	2,795,862	2,782,444
Intangible lease assets, less accumulated amortization	67,578	68,365
Construction in progress	80,821	62,038
Total real estate assets held for sale, net		0
Total real estate assets	3,570,195	3,534,241
Investments in and amounts due from unconsolidated joint ventures	0	0
Cash and cash equivalents	3,350	2,373	2,989	3,562
Tenant and straight-line rent receivables, net	167,716	160,005
Advances to affiliates	0	0
Investment in subsidiary	191	192
Notes receivable	23,890	23,890
Prepaid expenses, restricted cash, escrows, and other assets	22,567	23,541
Goodwill	0	0
Interest rate swaps	0	0
Deferred financing costs, net	368	425
Deferred lease costs, net	257,146	248,765
Other assets held for sale		0
Total assets	4,045,423	3,993,432
Liabilities:
Debt, net	610,141	610,395
Accounts payable, accrued expenses, and accrued capital expenditures	103,322	115,074
Advances from affiliates	2,185,841	2,138,140
Deferred income	20,820	17,217
Intangible lease liabilities, net	42,978	43,277
Interest rate swaps	0	0
Total liabilities	2,963,102	2,924,103
Stockholders’ Equity:
Common stock	0	0
Additional paid-in capital	1,318	192
Cumulative distributions in excess of earnings	1,079,974	1,067,528
Other comprehensive income	0	0
Piedmont stockholders’ equity	1,081,292	1,067,720
Noncontrolling interest	1,029	1,609
Total stockholders’ equity	1,082,321	1,069,329
Total liabilities and stockholders’ equity	4,045,423	3,993,432
Eliminations [Member]
Assets:
Land	0	0
Buildings and improvements, less accumulated depreciation	(300)	(300)
Intangible lease assets, less accumulated amortization	0	0
Construction in progress	0	0
Total real estate assets held for sale, net		0
Total real estate assets	(300)	(300)
Investments in and amounts due from unconsolidated joint ventures	0	0
Cash and cash equivalents	0	0	0	0
Tenant and straight-line rent receivables, net	0	0
Advances to affiliates	(7,427,454)	(7,366,686)
Investment in subsidiary	(3,846,590)	(3,879,003)
Notes receivable	(185,240)	(185,240)
Prepaid expenses, restricted cash, escrows, and other assets	(1,262)	(954)
Goodwill	0	0
Interest rate swaps	0	0
Deferred financing costs, net	0	0
Deferred lease costs, net	0	0
Other assets held for sale		0
Total assets	(11,460,846)	(11,432,183)
Liabilities:
Debt, net	(185,240)	(185,240)
Accounts payable, accrued expenses, and accrued capital expenditures	(1,262)	(954)
Advances from affiliates	(7,488,244)	(7,423,624)
Deferred income	0	0
Intangible lease liabilities, net	0	0
Interest rate swaps	0	0
Total liabilities	(7,674,746)	(7,609,818)
Stockholders’ Equity:
Common stock	0	0
Additional paid-in capital	(3,846,590)	(3,879,003)
Cumulative distributions in excess of earnings	60,490	56,638
Other comprehensive income	0	0
Piedmont stockholders’ equity	(3,786,100)	(3,822,365)
Noncontrolling interest	0	0
Total stockholders’ equity	(3,786,100)	(3,822,365)
Total liabilities and stockholders’ equity	$ (11,460,846)	$ (11,432,183)

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Stock Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation expense related to stock awards	$ 0.9	$ 0.6
Amortization of unvested shares	0.8	0.6
Total shares issued to employees, directors, and officers	15,418
Unrecognized compensation cost related to nonvested	$ 2.3
Unrecognized compensation cost related to nonvested, weighted-average vesting period (in years)	1 year

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Summary of Significant Accounting Policies (Details) (Minimum [Member])	3 Months Ended
	Mar. 31, 2015
Minimum [Member]
Income Tax For Real Estate Investment Trusts [Line Items]
Real estate investment trust status required taxable income distribution rate	90.00%

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Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The detail of Piedmont’s interest rate derivatives outstanding as of March 31, 2015 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	4	$300 Million Unsecured 2011 Term Loan	$	300	11/22/2011	11/22/2016
Interest rate swaps	4	$300 Million Unsecured 2013 Term Loan	200		1/30/2014	1/31/2019
Interest rate swaps	2	$300 Million Unsecured 2013 Term Loan	100		8/29/2014	1/31/2019
Forward starting interest rate swaps	3	$300 Million Unsecured 2011 Term Loan	300		11/22/2016	1/15/2020
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/27/2015	2/27/2022
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/25/2016	2/25/2026
Total			$	1,400

Schedule of Interest Rate Derivatives

The detail of Piedmont’s interest rate derivatives on a gross and net basis as of March 31, 2015 and December 31, 2014, respectively, is as follows (in thousands):

Interest rate swaps classified as:	March 31, 2015			December 31, 2014
Gross derivative assets	$	520		$	430
Gross derivative liabilities	(19,416		)	(6,417		)
Net derivative liability	$	(18,896	)	$	(5,987	)

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)

The effective portion of Piedmont's interest rate derivatives, including the gain on settlement of forward swaps described above, that was recorded in the accompanying consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively, was as follows:

	Three Months Ended
Derivative in Cash Flow Hedging Relationships (Interest Rate Swaps) (in thousands)	March 31, 2015			March 31, 2014
Amount of gain/(loss) recognized in OCI on derivative	$	(15,205	)	$	(9,886	)
Amount of previously recorded loss reclassified from accumulated OCI into interest expense	$	1,467		$	1,170

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Guarantor and Non-Guarantor Financial Information - Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by Operating Activities	$ 43,630	$ 70,053
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(81,358)	(27,587)
Redemption of noncontrolling interest in unconsolidated variable interest entity	(4,000)	0
Net sales proceeds from wholly-owned properties	25,803	22,322
Deferred lease costs paid	(4,414)	(4,180)
Net cash used in investing activities	(63,969)	(9,445)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242)	(454)
Proceeds from debt	257,575	764,564
Repayments of debt	(209,254)	(737,000)
Net costs of issuance of common stock	(90)	0
Repurchases of common stock as part of announced plan	0	(54,515)
(Distributions to)/repayments from affiliates	0	0
Dividends paid and discount on dividend reinvestments	(32,477)	(30,905)
Net cash provided by/(used in) financing activities	15,512	(58,310)
Net (decrease)/increase in cash and cash equivalents	(4,827)	2,298
Cash and cash equivalents, beginning of period	12,306	6,973
Cash and cash equivalents, end of period	7,479	9,271
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by Operating Activities	(6,974)	21,395
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(5,091)	(6,875)
Redemption of noncontrolling interest in unconsolidated variable interest entity	0
Net sales proceeds from wholly-owned properties	25,803	22,322
Deferred lease costs paid	(846)	(720)
Net cash used in investing activities	19,866	14,727
Cash Flows from Financing Activities:
Deferred financing costs paid	(242)	(454)
Proceeds from debt	257,575	764,564
Repayments of debt	(209,000)	(162,000)
Net costs of issuance of common stock	0
Repurchases of common stock as part of announced plan		0
(Distributions to)/repayments from affiliates	(65,489)	(635,361)
Dividends paid and discount on dividend reinvestments	0	0
Net cash provided by/(used in) financing activities	(17,156)	(33,251)
Net (decrease)/increase in cash and cash equivalents	(4,264)	2,871
Cash and cash equivalents, beginning of period	8,143	3,261
Cash and cash equivalents, end of period	3,879	6,132
Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by Operating Activities	426	594
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	0	0
Redemption of noncontrolling interest in unconsolidated variable interest entity	0
Net sales proceeds from wholly-owned properties	0	0
Deferred lease costs paid	0	0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities:
Deferred financing costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	0	0
Net costs of issuance of common stock	(90)
Repurchases of common stock as part of announced plan		(54,515)
(Distributions to)/repayments from affiliates	30,601	84,826
Dividends paid and discount on dividend reinvestments	(32,477)	(30,905)
Net cash provided by/(used in) financing activities	(1,966)	(594)
Net (decrease)/increase in cash and cash equivalents	(1,540)	0
Cash and cash equivalents, beginning of period	1,790	150
Cash and cash equivalents, end of period	250	150
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by Operating Activities	42,343	41,908
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(76,267)	(20,712)
Redemption of noncontrolling interest in unconsolidated variable interest entity	(4,000)
Net sales proceeds from wholly-owned properties	0	0
Deferred lease costs paid	(3,568)	(3,460)
Net cash used in investing activities	(83,835)	(24,172)
Cash Flows from Financing Activities:
Deferred financing costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	(254)	(575,000)
Net costs of issuance of common stock	0
Repurchases of common stock as part of announced plan		0
(Distributions to)/repayments from affiliates	42,723	556,691
Dividends paid and discount on dividend reinvestments	0	0
Net cash provided by/(used in) financing activities	42,469	(18,309)
Net (decrease)/increase in cash and cash equivalents	977	(573)
Cash and cash equivalents, beginning of period	2,373	3,562
Cash and cash equivalents, end of period	3,350	2,989
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by Operating Activities	7,835	6,156
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	0	0
Redemption of noncontrolling interest in unconsolidated variable interest entity	0
Net sales proceeds from wholly-owned properties	0	0
Deferred lease costs paid	0	0
Net cash used in investing activities	0	0
Cash Flows from Financing Activities:
Deferred financing costs paid	0	0
Proceeds from debt	0	0
Repayments of debt	0	0
Net costs of issuance of common stock	0
Repurchases of common stock as part of announced plan		0
(Distributions to)/repayments from affiliates	(7,835)	(6,156)
Dividends paid and discount on dividend reinvestments	0	0
Net cash provided by/(used in) financing activities	(7,835)	(6,156)
Net (decrease)/increase in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$ 0	$ 0

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Assets Held for Sale and Discontinued Operations (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 19, 2014	Apr. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Proceeds	$ 25,803,000	$ 22,322,000
Loss on sale of real estate assets, net	0	(106,000)
Revenues:
Rental income	0	1,174,000
Tenant reimbursements	0	112,000
Revenue	0	1,286,000
Expenses:
Property operating costs	0	505,000
Depreciation	0	83,000
Amortization	0	223,000
General and administrative	0	3,000
Expenses	0	814,000
Other income/(expense)
Other income/(expense)	0	(6,000)
Operating income, excluding gain on sale	0	466,000
Income from discontinued operations	0	360,000
3900 Dallas Parkway Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales price of building	26,200,000
Gain/(Loss) on Sale	10,100,000
Net Sales Proceeds	25,800,000
11107 and 11109 Sunset Hills Road [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Proceeds			22,326,000
Loss on sale of real estate assets, net			(102,000)
1441 West Long Lake Road [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Proceeds				7,202,000
Loss on sale of real estate assets, net				562,000
4685 Investment Drive [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Proceeds				11,198,000
Loss on sale of real estate assets, net				$ 747,000

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Derivative Instruments (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivative [Line Items]
Maximum period of extension term	131 months
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Gross derivative assets	$ 520,000		$ 430,000
Gross derivative liabilities	(19,416,000)		(6,417,000)
Net derivative liability	(18,896,000)		(5,987,000)
Loss to be reclassified from accumulated other comprehensive loss to interest expense over next twelve months	5,700,000
Interest Rate Swap [Member] | Interest Expense [Member]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Amount of gain/(loss) recognized in OCI on derivative	(15,205,000)	(9,886,000)
Amount of previously recorded loss reclassified from accumulated OCI into interest expense	1,467,000	1,170,000
Credit Risk Contract [Member]
Interest Rate Cash Flow Hedge Derivative at Fair Value, Net [Abstract]
Assets needed for immediate settlement, aggregate fair value	20,300,000
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member]
Derivative [Line Items]
Face amount of debt instrument	500,000,000
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member]
Derivative [Line Items]
Face amount of debt instrument	170,000,000
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2016 [Member]
Derivative [Line Items]
Face amount of debt instrument	300,000,000
Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member]
Derivative [Line Items]
Face amount of debt instrument	300,000,000
Debt [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Total notional value	1,400,000,000
Debt [Member] | Forward Starting Interest Rate Swap [Member]
Derivative [Line Items]
Total notional value	500,000,000
Debt [Member] | Forward Starting Interest Rate Swap 4 through 8 [Member]
Derivative [Line Items]
Total notional value	250,000,000
Number of Swap Agreements	4
Debt [Member] | Forward Starting Interest Rate Swap 9 through 12 [Member]
Derivative [Line Items]
Total notional value	250,000,000
Number of Swap Agreements	4
Debt [Member] | Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2016 [Member] | Interest Rate Swap 1 through 4 [Member]
Derivative [Line Items]
Total notional value	300,000,000
Number of Swap Agreements	4
Debt [Member] | Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member] | Interest Rate Swap 5 through 8 [Member]
Derivative [Line Items]
Total notional value	200,000,000
Number of Swap Agreements	4
Debt [Member] | Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member] | Interest Rate Swap 9 through 10 [Member]
Derivative [Line Items]
Total notional value	100,000,000
Number of Swap Agreements	2
Debt [Member] | Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2020 [Member] | Forward Starting Interest Rate Swap 1 through 3 [Member]
Derivative [Line Items]
Total notional value	$ 300,000,000
Number of Swap Agreements	3

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Earnings Per Share (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Weighted-average common shares – basic	154,339,029	154,849,378
Deferred stock awards (in shares)	241,000	176,000
Weighted-average common shares outstanding – diluted	154,580,335	155,024,545

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Organization

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Piedmont Office Realty Trust, Inc. (“Piedmont”) (NYSE: PDM) is a Maryland corporation that operates in a manner so as to qualify as a real estate investment trust (“REIT”) for federal income tax purposes and engages in the acquisition, development, management, and ownership of commercial real estate properties throughout the United States, including properties that are under construction, are newly constructed, or have operating histories. Piedmont was incorporated in 1997 and commenced operations in 1998. Piedmont conducts business primarily through Piedmont Operating Partnership, L.P. (“Piedmont OP”), a Delaware limited partnership, as well as performing the management of its buildings through two wholly-owned subsidiaries, Piedmont Government Services, LLC and Piedmont Office Management, LLC. Piedmont owns 99.9% of, and is the sole general partner of, Piedmont OP and as such, possesses full legal control and authority over the operations of Piedmont OP. The remaining 0.1% ownership interest of Piedmont OP is held indirectly by Piedmont through its wholly-owned subsidiary, Piedmont Office Holdings, Inc. ("POH"), the sole limited partner of Piedmont OP. Piedmont OP owns properties directly, through wholly-owned subsidiaries, and through both consolidated and unconsolidated joint ventures. References to Piedmont herein shall include Piedmont and all of its subsidiaries, including Piedmont OP and its subsidiaries and joint ventures.

As of March 31, 2015, Piedmont owned 74 office properties, one redevelopment asset, and one office building through an unconsolidated joint venture. Piedmont's 74 consolidated office properties comprise 21.5 million square feet of primarily Class A commercial office space, and were 88.8% leased as of March 31, 2015. As of March 31, 2015, approximately 90% of Piedmont's Annualized Lease Revenue was generated from select office sub-markets in the following cities: Atlanta, Boston, Chicago, Dallas, Houston, Los Angeles, Minneapolis, New York, and Washington, D.C.

Piedmont internally evaluates all of its real estate assets as one operating segment, and accordingly, does not report segment information.

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Stock Based Compensation (Rollforward of Deferred Stock Awards) (Details) (Stock Awards [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested Deferred Stock Awards, Beginning of period (in shares)	506,404
Deferred Stock Awards Granted (in shares)	0
Adjustment to Estimated Future Grants of Performance Share Awards (in shares)	(15,413)
Deferred Stock Awards Vested (in shares)	(20,976)
Deferred Stock Awards Forfeited (in shares)	0
Unvested Deferred Stock Awards, End of period (in shares)	470,015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested Deferred Stock Awards, Weighted-Average Grant Date Fair Value, Beginning of period (in dollars per share)	$ 18.12
Deferred Stock Awards Granted, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 0.00	$ 16.45
Adjustment to Estimated Future Grants of Performance Share Awards (Weighted-Average Grant Date Fair Value, in dollars per share)	$ 18.51
Deferred Stock Awards Vested, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 16.48
Deferred Stock Awards Forfeited, Weighted-Average Grant Date Fair Value (in dollars per share)	$ 0.00
Unvested Deferred Stock Awards, Weighted-Average Grant Date Fair Value, End of period (in dollars per share)	$ 18.18

XML

Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Nonvested Share Activity

A rollforward of Piedmont's equity based award activity for the three months endedMarch 31, 2015 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested Deferred Stock Awards as of December 31, 2014	506,404		$	18.12
Deferred Stock Awards Granted During Three Months Ended March 31, 2015	—		$	—
Adjustment to Estimated Future Grants of Performance Share Awards During Three Months Ended March 31, 2015	(15,413	)	$	18.51
Deferred Stock Awards Vested During Three Months Ended March 31, 2015	(20,976	)	$	16.48
Deferred Stock Awards Forfeited During Three Months Ended March 31, 2015	—		$	—
Unvested Deferred Stock Awards as of March 31, 2015	470,015		$	18.18

The following table provides additional information regarding stock award activity during the three months endedMarch 31, 2015 and 2014, respectively (in thousands except for per share data):

	Three Months Ended
	March 31, 2015		March 31, 2014
Weighted-Average Grant Date Fair Value of Shares Granted During the Period (per share)	$	—	$	16.45
Total Grant Date Fair Value of Shares Vested During the Period	$	346	$	4
Share-based Liability Awards Paid During the Period(1)	$	—	$	—

⁽¹⁾  Amount reflects the issuance of performance share awards during the period.

Schedule of Outstanding Employee Deferred Stock Awards

A detail of Piedmont’s outstanding employee stock awards as of March 31, 2015 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares as of March 31, 2015
April 4, 2012	Deferred Stock Award	169,128	$	17.53	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 4, 2013, 2014, and 2015, respectively.	53,868
April 2, 2013	Deferred Stock Award	132,826	$	19.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 2, 2014, 2015, and 2016, respectively.	76,156
April 2, 2013	Fiscal Year 2013-2015 Performance Share Program	—	$	18.91	Shares awarded, if any, will vest immediately upon determination of award in 2016.	—	(2)
January 3, 2014	Deferred Stock Award	95,476	$	16.45	Of the shares granted, 20% will vest on January 3, 2015, 2016, 2017, 2018, and 2019, respectively.	82,673
May 9, 2014	Deferred Stock Award	179,897	$	18.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 9, 2015, 2016, and 2017, respectively.	144,287
May 9, 2014	Fiscal Year 2014-2016 Performance Share Program	—	$	18.51	Shares awarded, if any, will vest immediately upon determination of award in 2017.	113,031	(3)
Total						470,015

⁽¹⁾  Amounts reflect the total grant to employees, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through March 31, 2015.

⁽²⁾  Estimated based on Piedmont's cumulative total stockholder return ("TSR") for the respective performance period through March 31, 2015. As of March 31, 2015, Piedmont's TSR for the fiscal year 2013-2015 performance share program was below threshold. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

⁽³⁾  Estimated based on Piedmont's cumulative TSR for the respective performance period through March 31, 2015. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

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Assets Held for Sale and Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Disclosure of Long Lived Assets Held-for-sale

Assets held for sale as of December 31, 2014 consisted solely of the 3900 Dallas Parkway building. Details are presented below (in thousands):

	March 31, 2015		December 31, 2014
Real estate assets held for sale, net:
Land	$	—	$	1,517
Building and improvements, less accumulated depreciation of $10,342 as of December 31, 2014	—		13,027
Total real estate assets held for sale, net	$	—	$	14,544
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	768
Deferred lease costs, less accumulated amortization of $1,552 as of December 31, 2014	—		496
Total other assets held for sale, net	$	—	$	1,264

Schedule of Disposal Groups, Including Discontinued Operations, Results Of Operations

Asset disposals in previous periods that were previously classified as, and that continue to be reported as, discontinued operations for the three months endedMarch 31, 2015 and 2014 were as follows (in thousands):

Buildings Sold	Location	Date of Sale	Gain/(Loss) on Sale			Net Sales Proceeds
11107 and 11109 Sunset Hills Road	Reston, Virginia	March 19, 2014	$	(102	)	$	22,326
1441 West Long Lake Road	Troy, Michigan	April 30, 2014	$	562		$	7,202
4685 Investment Drive	Troy, Michigan	April 30, 2014	$	747		$	11,198

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures

Details comprising income from discontinued operations for the three months ended March 31, 2015 and 2014 are presented below (in thousands):

	Three Months Ended
	March 31, 2015		March 31, 2014
Revenues:
Rental income	$	—	$	1,174
Tenant reimbursements	—		112
	—		1,286
Expenses:
Property operating costs	—		505
Depreciation	—		83
Amortization	—		223
General and administrative	—		3
	—		814
Other income/(expense)	—		(6		)
Operating income, excluding gain on sale	—		466
Gain on sale of real estate assets	—		(106		)
Income from discontinued operations	$	—	$	360

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Stock Based Compensation (Additional Information Regarding Stock Award Activity) (Details) (Stock Awards [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value of Shares Granted During the Period (per share)	$ 0.00		$ 16.45
Total Grant Date Fair Value of Shares Vested During the Period	$ 346		$ 4
Share-based Liability Awards Paid During the Period	$ 0	[1]	$ 0	[1]

[1] Amount reflects the issuance of performance share awards during the period.

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended
	March 31, 2015	March 31, 2014
Weighted-average common shares – basic	154,339	154,849
Plus incremental weighted-average shares from time-vested conversions:
Deferred stock awards	241	176
Weighted-average common shares – diluted	154,580	155,025

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Guarantor and Non-Guarantor Financial Information (Tables)

3 Months Ended

Mar. 31, 2015

Guarantor and Non-Guarantor Financial Information [Abstract]

Condensed Consolidated Balance Sheets

Condensed Consolidated Balance Sheets
As of March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406		$	—		$	625,934	$	—		$	707,340
Buildings and improvements, less accumulated depreciation	438,933			—			2,795,862		(300		)	3,234,495
Intangible lease assets, less accumulated amortization	1,676			—			67,578		—			69,254
Construction in progress	3,032			—			80,821		—			83,853
Total real estate assets	525,047			—			3,570,195		(300		)	4,094,942
Investments in and amounts due from unconsolidated joint ventures	7,820			—			—		—			7,820
Cash and cash equivalents	3,879			250			3,350		—			7,479
Tenant and straight-line rent receivables, net	37,756			—			167,716		—			205,472
Advances to affiliates	6,142,933			1,284,521			—		(7,427,454		)	—
Investment in subsidiary	—			3,846,399			191		(3,846,590		)	—
Notes receivable	161,350			—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	6,129			116			22,567		(1,262		)	27,550
Goodwill	180,097			—			—		—			180,097
Interest rate swaps	520			—			—		—			520
Deferred financing costs, net	7,023			—			368		—			7,391
Deferred lease costs, net	31,445			—			257,146		—			288,591
Total assets	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862
Liabilities:
Debt, net	$	1,901,208		$	—		$	610,141	$	(185,240	)	$	2,326,109
Accounts payable, accrued expenses, and accrued capital expenditures	16,732			674			103,322		(1,262		)	119,466
Advances from affiliates	392,696			4,909,707			2,185,841		(7,488,244		)	—
Deferred income	5,150			—			20,820		—			25,970
Intangible lease liabilities, net	—			—			42,978		—			42,978
Interest rate swaps	19,416			—			—		—			19,416
Total liabilities	2,335,202			4,910,381			2,963,102		(7,674,746		)	2,533,939
Stockholders’ Equity:
Common stock	—			1,543			—		—			1,543
Additional paid-in capital	3,842,399			3,670,447			1,318		(3,846,590		)	3,667,574
Retained/(cumulative distributions in excess of) earnings	931,835			(3,451,085		)	1,079,974		60,490			(1,378,786		)
Other comprehensive loss	(5,437		)	—			—		—			(5,437		)
Piedmont stockholders’ equity	4,768,797			220,905			1,081,292		(3,786,100		)	2,284,894
Noncontrolling interest	—			—			1,029		—			1,029
Total stockholders’ equity	4,768,797			220,905			1,082,321		(3,786,100		)	2,285,923
Total liabilities and stockholders’ equity	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862

Condensed Consolidated Balance Sheets
As of December 31, 2014
(in thousands)	Issuer		Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406	$	—		$	621,394	$	—		$	702,800
Buildings and improvements, less accumulated depreciation	442,034		—			2,782,444		(300		)	3,224,178
Intangible lease assets, less accumulated amortization	1,812		—			68,365		—			70,177
Construction in progress	1,355		—			62,038		—			63,393
Real estate assets held for sale, net	14,544		—			—		—			14,544
Total real estate assets	541,151		—			3,534,241		(300		)	4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,798		—			—		—			7,798
Cash and cash equivalents	8,143		1,790			2,373		—			12,306
Tenant and straight-line rent receivables, net	37,238		—			160,005		—			197,243
Advances to affiliates	6,084,243		1,282,443			—		(7,366,686		)	—
Investment in subsidiary	—		3,878,811			192		(3,879,003		)	—
Notes receivable	161,350		—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	10,912		—			23,541		(954		)	33,499
Goodwill	180,097		—			—		—			180,097
Interest rate swaps	430		—			—		—			430
Deferred financing costs, net	7,242		—			425		—			7,667
Deferred lease costs, net	31,340		—			248,765		—			280,105
Other assets held for sale, net	1,264		—			—		—			1,264
Total assets	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501
Liabilities:
Debt, net	$	1,852,434	$	—		$	610,395	$	(185,240	)	$	2,277,589
Accounts payable, accrued expenses, and accrued capital expenditures	19,403		465			115,074		(954		)	133,988
Advances from affiliates	376,122		4,909,362			2,138,140		(7,423,624		)	—
Deferred income	4,998		—			17,217		—			22,215
Intangible lease liabilities, net	—		—			43,277		—			43,277
Interest rate swaps	6,417		—			—		—			6,417
Total liabilities	2,259,374		4,909,827			2,924,103		(7,609,818		)	2,483,486
Stockholders’ Equity:
Common stock	—		1,543			—		—			1,543
Additional paid-in capital	3,874,757		3,670,236			192		(3,879,003		)	3,666,182
Retained/(cumulative distributions in excess of) earnings	928,776		(3,418,562		)	1,067,528		56,638			(1,365,620		)
Other comprehensive loss	8,301		—			—		—			8,301
Piedmont stockholders’ equity	4,811,834		253,217			1,067,720		(3,822,365		)	2,310,406
Noncontrolling interest	—		—			1,609		—			1,609
Total stockholders’ equity	4,811,834		253,217			1,069,329		(3,822,365		)	2,312,015
Total liabilities and stockholders’ equity	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501

Condensed Consolidated Statements of Income

Condensed Consolidated Statements of Income
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	18,937		$	—		$	99,577		$	(707	)	$	117,807
Tenant reimbursements	4,246			—			27,272			(128		)	31,390
Property management fee revenue	—			—			4,439			(3,877		)	562
	23,183			—			131,288			(4,712		)	149,759
Expenses:
Property operating costs	10,661			—			58,494			(4,919		)	64,236
Depreciation	5,803			—			30,429			—			36,232
Amortization	1,254			—			13,416			—			14,670
General and administrative	6,200			111			7,724			(7,628		)	6,407
	23,918			111			110,063			(12,547		)	121,545
Real estate operating income	(735		)	(111		)	21,225			7,835			28,214
Other income (expense):
Interest expense	(13,188		)	—			(8,949		)	3,121			(19,016		)
Other income/(expense)	2,766			—			174			(3,121		)	(181		)
Equity in income of unconsolidated joint ventures	159			—			—			—			159
	(10,263		)	—			(8,775		)	—			(19,038		)
Income from continuing operations	(10,998		)	(111		)	12,450			7,835			9,176
Discontinued operations:
Operating income	—			—			—			—			—
Income from discontinued operations	—			—			—			—			—
Gain on sale of real estate assets	10,073			—			—			—			10,073
Net income	(925		)	(111		)	12,450			7,835			19,249
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(925	)	$	(111	)	$	12,446		$	7,835		$	19,245

Condensed Consolidated Statements of Income
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	17,400		$	—		$	95,157		$	(1,653	)	$	110,904
Tenant reimbursements	3,861			—			21,179			(111		)	24,929
Property management fee revenue	—			—			4,171			(3,684		)	487
	21,261			—			120,507			(5,448		)	136,320
Expenses:
Property operating costs	10,044			—			53,878			(5,651		)	58,271
Depreciation	5,840			—			27,804			—			33,644
Amortization	1,111			—			13,462			—			14,573
General and administrative	4,469			77			5,961			(5,952		)	4,555
	21,464			77			101,105			(11,603		)	111,043
Real estate operating income	(203		)	(77		)	19,402			6,155			25,277
Other income (expense):
Interest expense	(9,120		)	—			(12,939		)	3,133			(18,926		)
Other income/(expense)	2,762			35			246			(3,133		)	(90		)
Net recoveries/(loss) from casualty events and litigation settlements	1,351			—			1,691			—			3,042
Equity in income of unconsolidated joint ventures	(266		)	—			—			—			(266		)
	(5,273		)	35			(11,002		)	—			(16,240		)
Income from continuing operations	(5,476		)	(42		)	8,400			6,155			9,037
Discontinued operations:
Operating income	480			—			(14		)	—			466
Loss on sale of real estate assets	(106		)	—			—			—			(106		)
Income from discontinued operations	374			—			(14		)	—			360
Net income	(5,102		)	(42		)	8,386			6,155			9,397
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(5,102	)	$	(42	)	$	8,382		$	6,155		$	9,393

Condensed Consolidated Statements of Cash Flows

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	(6,974	)	$	426		$	42,343		$	7,835		$	43,630
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(5,091		)	—			(76,267		)	—			(81,358		)
Redemption of noncontrolling interest in unconsolidated variable interest entity	—			—			(4,000		)	—			(4,000		)
Net sales proceeds from wholly-owned properties	25,803			—			—			—			25,803
Deferred lease costs paid	(846		)	—			(3,568		)	—			(4,414		)
Net cash used in investing activities	19,866			—			(83,835		)	—			(63,969		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242		)	—			—			—			(242		)
Proceeds from debt	257,575			—			—			—			257,575
Repayments of debt	(209,000		)	—			(254		)	—			(209,254		)
Costs of issuance of common stock	—			(90		)	—			—			(90		)
(Distributions to)/repayments from affiliates	(65,489		)	30,601			42,723			(7,835		)	—
Dividends paid and discount on dividend reinvestments	—			(32,477		)	—			—			(32,477		)
Net cash provided by financing activities	(17,156		)	(1,966		)	42,469			(7,835		)	15,512
Net decrease in cash and cash equivalents	(4,264		)	(1,540		)	977			—			(4,827		)
Cash and cash equivalents, beginning of period	8,143			1,790			2,373			—			12,306
Cash and cash equivalents, end of period	$	3,879		$	250		$	3,350		$	—		$	7,479

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	21,395		$	594		$	41,908		$	6,156		$	70,053
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(6,875		)	—			(20,712		)	—			(27,587		)
Net sales proceeds from wholly-owned properties	22,322			—			—			—			22,322
Deferred lease costs paid	(720		)	—			(3,460		)	—			(4,180		)
Net cash used in investing activities	14,727			—			(24,172		)	—			(9,445		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(454		)	—			—			—			(454		)
Proceeds from debt	764,564			—			—			—			764,564
Repayments of debt	(162,000		)	—			(575,000		)	—			(737,000		)
Repurchases of common stock as part of announced plan	—			(54,515		)	—			—			(54,515		)
(Distributions to)/repayments from affiliates	(635,361		)	84,826			556,691			(6,156		)	—
Dividends paid and discount on dividend reinvestments	—			(30,905		)	—			—			(30,905		)
Net cash used in financing activities	(33,251		)	(594		)	(18,309		)	(6,156		)	(58,310		)
Net increase in cash and cash equivalents	2,871			—			(573		)	—			2,298
Cash and cash equivalents, beginning of period	3,261			150			3,562			—			6,973
Cash and cash equivalents, end of period	$	6,132		$	150		$	2,989		$	—		$	9,271

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net income	$ 19,249	$ 9,397
Operating distributions received from unconsolidated joint ventures	137	266
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	36,232	33,727
Amortization of deferred financing costs	387	774
Settlement of forward starting interest rate swaps	0	14,960
Other amortization	14,806	14,346
Stock compensation expense	725	636
Equity in loss/(income) of unconsolidated joint ventures	(159)	266
(Gain)/loss on sale of real estate assets, net	10,073	(106)
Changes in assets and liabilities:
Increase in tenant and straight-line rent receivables, net	(11,234)	(1,371)
(Increase)/decrease in restricted cash and escrows	(148)	43
Decrease/(increase) in prepaid expenses and other assets	1,037	(3,467)
Decrease in accounts payable and accrued expenses	(11,074)	(350)
Increase in deferred income	3,745	720
Net cash provided by operating activities	43,630	70,053
Cash Flows from Investing Activities:
Acquisition of real estate assets and related intangibles	(41,554)	(400)
Capitalized expenditures, net of accruals	(39,804)	(27,187)
Redemption of noncontrolling interest in unconsolidated variable interest entity	(4,000)	0
Net sales proceeds from wholly-owned properties	25,803	22,322
Deferred lease costs paid	(4,414)	(4,180)
Net cash used in investing activities	(63,969)	(9,445)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242)	(454)
Proceeds from debt	257,575	764,564
Repayments of debt	(209,254)	(737,000)
Costs of issuance of common stock	(90)	0
Repurchases of common stock as part of announced plan	0	(54,515)
Dividends paid and discount on dividend reinvestments	(32,477)	(30,905)
Net cash provided by/(used in) financing activities	15,512	(58,310)
Net (decrease)/increase in cash and cash equivalents	(4,827)	2,298
Cash and cash equivalents, beginning of period	12,306	6,973
Cash and cash equivalents, end of period	7,479	9,271
Supplemental Disclosures of Significant Noncash Investing and Financing Activities:
Change in accrued share repurchases as part of an announced plan	0	(1,836)
Accrued capital expenditures and deferred lease costs	$ 12,946	$ 13,721

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Organization (Details)	3 Months Ended
	Mar. 31, 2015 Segment subsidiary
Real Estate Properties [Line Items]
Number of wholly-owned subsidiaries	2
Percentage ownership by sole general partner	99.90%
Percentage ownership by sole limited partner	0.10%
Percentage of annualized lease revenue	90.00%
Number of operating segments	1
Unconsolidated Joint Venture [Member]
Real Estate Properties [Line Items]
Number of real estate properties	1
Office properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties	74
Number of redevelopment assets	1
Square footage of real estate property	21,500,000
Percentage Leased as of Acquisition	88.80%

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Commitments and Contingencies (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015 category	Mar. 31, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Number of tenant and building improvement categories	2
Letters of credit outstanding	$ 400,000
Letter of credit, renewal period	1 year
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member]
Loss Contingencies [Line Items]
Face amount of debt instrument	500,000,000
Tenant Audits and Disputes [Member]
Loss Contingencies [Line Items]
Tenant audit dispute expense	0	300,000
Non-Incremental Capital Expenditures [Member]
Loss Contingencies [Line Items]
Potential obligations for tenant improvements	46,100,000
Incremental Capital Expenditures [Member]
Loss Contingencies [Line Items]
Potential obligations for tenant improvements	$ 23,800,000
Non-Incremental Capital Expenditures [Member]
Loss Contingencies [Line Items]
Period for commitments for funding non-incremental capital expenditures	3 years
Maximum [Member] | Non-Incremental Capital Expenditures [Member]
Loss Contingencies [Line Items]
Period for commitments for funding non-incremental capital expenditures			5 years

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Land	$ 707,340	$ 702,800
Buildings and improvements, less accumulated depreciation of $1,118,327 and $1,088,062 as of March 31, 2015 and December 31, 2014, respectively	3,234,495	3,224,178
Intangible lease assets, less accumulated amortization of $84,212 and $79,860 as of March 31, 2015 and December 31, 2014, respectively	69,254	70,177
Construction in progress	83,853	63,393
Real estate assets held for sale	0	14,544
Total real estate assets	4,094,942	4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,820	7,798
Cash and cash equivalents	7,479	12,306
Tenant receivables, net of allowance for doubtful accounts of $106 and $231 as of March 31, 2015 and December 31, 2014, respectively	30,132	27,711
Straight-line rent receivables	175,340	169,532
Restricted cash and escrows	671	5,679
Prepaid expenses and other assets	26,879	27,820
Goodwill	180,097	180,097
Interest rate swaps	520	430
Deferred financing costs, less accumulated amortization of $6,607 and $6,067 as of March 31, 2015 and December 31, 2014, respectively	7,391	7,667
Deferred lease costs, less accumulated amortization of $152,161 and $142,915 as of March 31, 2015 and December 31, 2014, respectively	288,591	280,105
Other assets held for sale	0	1,264
Total assets	4,819,862	4,795,501
Liabilities:
Unsecured debt, net of discount of $5,682 and $5,456 as of March 31, 2015 and December 31, 2014, respectively	1,877,318	1,828,544
Secured debt, inclusive of premium of $3,137 and $3,258 as of March 31, 2015 and December 31, 2014, respectively	448,791	449,045
Accounts payable, accrued expenses, and accrued capital expenditures	119,466	133,988
Deferred income	25,970	22,215
Intangible lease liabilities, less accumulated amortization of $39,682 and $37,964 as of March 31, 2015 and December 31, 2014, respectively	42,978	43,277
Interest rate swaps	19,416	6,417
Total liabilities	2,533,939	2,483,486
Commitments and Contingencies	0	0
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of March 31, 2015 or December 31, 2014	0	0
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of March 31, 2015 or December 31, 2014	0	0
Common stock, $.01 par value, 750,000,000 shares authorized; 154,339,507 and 154,324,089 shares issued and outstanding as of March 31, 2015 and December 31, 2014, respectively	1,543	1,543
Additional paid-in capital	3,667,574	3,666,182
Cumulative distributions in excess of earnings	(1,378,786)	(1,365,620)
Other comprehensive income	(5,437)	8,301
Piedmont stockholders’ equity	2,284,894	2,310,406
Noncontrolling interest	1,029	1,609
Total stockholders’ equity	2,285,923	2,312,015
Total liabilities and stockholders’ equity	$ 4,819,862	$ 4,795,501

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Stock Based Compensation (Outstanding Employee Deferred Stock Awards) (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014	Apr. 04, 2012		Apr. 02, 2013		Jan. 03, 2014		May 09, 2014
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Date Fair Value	$ 18.18		$ 18.12
Unvested Shares	470,015		506,404
Stock Awards 1, Granted April 4, 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted				169,128	[1]
Grant Date Fair Value				$ 17.53
Of the shares granted, % vested	25.00%
Of the shares granted, % expected to vest in one year	25.00%
Of the shares granted, % expected to vest in two years	25.00%
Of the shares granted, % expected to vest in three years	25.00%
Unvested Shares	53,868
Stock Awards, Granted April 2, 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted						132,826	[1]
Grant Date Fair Value						$ 19.47
Of the shares granted, % vested	25.00%
Of the shares granted, % expected to vest in one year	25.00%
Of the shares granted, % expected to vest in two years	25.00%
Of the shares granted, % expected to vest in three years	25.00%
Unvested Shares	76,156
Stock Awards 2, Granted April 2, 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted						0	[1]
Grant Date Fair Value						$ 18.91
Unvested Shares	0	[2]
Stock Awards, Granted January 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted								95,476	[1]
Grant Date Fair Value								$ 16.45
Of the shares granted, % vested	20.00%
Of the shares granted, % expected to vest in one year	20.00%
Of the shares granted, % expected to vest in two years	20.00%
Of the shares granted, % expected to vest in three years	20.00%
Of the shares granted, % expected to vest in four years	20.00%
Unvested Shares	82,673
Stock Awards, Granted May 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted										179,897	[1]
Grant Date Fair Value										$ 18.47
Of the shares granted, % vested	25.00%
Of the shares granted, % expected to vest in one year	25.00%
Of the shares granted, % expected to vest in two years	25.00%
Of the shares granted, % expected to vest in three years	25.00%
Unvested Shares	144,287
Stock Awards 2, Granted May 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net Shares Granted										0	[1]
Grant Date Fair Value										$ 18.51
Unvested Shares	113,031	[3]

[1] Amounts reflect the total grant to employees, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through March 31, 2015.

[2] Estimated based on Piedmont's cumulative total stockholder return ("TSR") for the respective performance period through March 31, 2015. As of March 31, 2015, Piedmont's TSR for the fiscal year 2013-2015 performance share program was below threshold. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

[3] Estimated based on Piedmont's cumulative TSR for the respective performance period through March 31, 2015. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Cumulative Distributions in Excess of Earnings [Member]	Other Comprehensive Loss [Member]	Non-controlling Interest [Member]
Balance at Dec. 31, 2013	$ 2,461,159	$ 1,575	$ 3,668,906	$ (1,231,209)	$ 20,278	$ 1,609
Balance (in shares) at Dec. 31, 2013		157,461,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share repurchases as part of an announced plan	(52,796)	(32)		(52,764)
Share repurchases as part of an announced plan, shares		(3,190,000)
Retirement of shares returned from escrow	(1,479)	(1)	(1,478)
Retirement of shares returned from escrow, shares		(85,000)
Redemption of noncontrolling interest in consolidated variable interest entity	(4,054)		(4,054)
Dividends to common stockholders ($0.81 (YTD 2014) and $0.21 (YTD 2015) per share), distributions to noncontrolling interest, and dividends reinvested	(125,198)		(188)	(124,995)		(15)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	2,997	1	2,996
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		138,000
Net income attributable to noncontrolling interest	15					15
Net income attributable to Piedmont	43,348			43,348
Other comprehensive income (loss)	(11,977)				(11,977)
Balance at Dec. 31, 2014	2,312,015	1,543	3,666,182	(1,365,620)	8,301	1,609
Balance (in shares) at Dec. 31, 2014	154,324,089	154,324,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share repurchases as part of an announced plan	0	0		0
Share repurchases as part of an announced plan, shares		0
Offering costs	(285)		(285)
Redemption of noncontrolling interest in consolidated variable interest entity	54		54
Reallocation of noncontrolling interest of subsidiary	544		1,128			(584)
Dividends to common stockholders ($0.81 (YTD 2014) and $0.21 (YTD 2015) per share), distributions to noncontrolling interest, and dividends reinvested	(32,477)		(66)	(32,411)
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax	561		561
Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares)		16,000
Net income attributable to noncontrolling interest	4					4
Net income attributable to Piedmont	19,245			19,245
Other comprehensive income (loss)	(13,738)				(13,738)
Balance at Mar. 31, 2015	$ 2,285,923	$ 1,543	$ 3,667,574	$ (1,378,786)	$ (5,437)	$ 1,029
Balance (in shares) at Mar. 31, 2015	154,339,507	154,340,000

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Debt (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Debt Instrument [Line Items]
Interest payments on debt facilities	$ 20,400,000		$ 16,500,000
Capitalized interest	800,000		400,000
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate period	1 year
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate period	1 month
London Interbank Offered Rate (LIBOR), One Month [Member]
Debt Instrument [Line Items]
Interest rate period	1 month
London Interbank Offered Rate (LIBOR), Two Months [Member]
Debt Instrument [Line Items]
Interest rate period	2 months
London Interbank Offered Rate (LIBOR), Three Months [Member]
Debt Instrument [Line Items]
Interest rate period	3 months
London Interbank Offered Rate (LIBOR), Six Months [Member]
Debt Instrument [Line Items]
Interest rate period	6 months
$170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Rate	1.125%
$170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
$170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
$50 Million Unsecured Term Loan [Member] | Bridge Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	50,000,000
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	170,000,000
Term of Unsecured Term Loan	3 years
Unencumbered interest coverage ratio	1.75
Unencumbered leverage ratio	1.60
Fixed charge coverage ratio	1.50
Leverage ratio	0.60
Secured debt ratio	0.40
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%	[1],[2]
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Unsecured Debt [Member] | $50 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	50,000,000
Unsecured Debt [Member] | $50 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.15%	[1]
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	500,000,000
Basis spread on variable rate	1.175%
Net borrowings	88,000,000
Repayments	$ (159,000,000)
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.175%	[1],[3]

[1] Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of March 31, 2015 and December 31, 2014 is interest-only.

[2] Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.125% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of a 30-day LIBOR draw at a rate of 0.18% (subject to the additional spread mentioned above).

[3] Piedmont may select from multiple interest rate options with each draw, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.175% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of 30-day LIBOR draws at a rate of 0.18% (subject to the additional spread mentioned above).

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Principles of Consolidation

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2014.

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from those estimates.

Income Taxes

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”), and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

The Financial Accounting Standards Board (the "FASB") has issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). The amendments in ASU 2014-09 change the criteria for the recognition of revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services using a five-step determination process. Steps 1 through 5 involve (i) identifying contracts with a customer, (ii) identifying the performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations, and (v) recognizing revenue as an entity satisfies a performance obligation. Additionally, lease contracts are specifically excluded from ASU 2014-09. The amendments in ASU 2014-09 are effective in the first quarter of 2017 for Piedmont, and early adoption is not permitted. Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810), Amendments to the Consolidation Analysis ("ASU 2015-02"). The amendments in ASU 2015-02 modifies the consolidation analysis of certain types of entities. Specifically, ASU 2015-02 changes the assessment criteria of whether limited partnerships are VIEs, eliminates the presumption that general partners should consolidate a limited partner, eliminates certain conditions from the evaluation of whether a fee paid to a decision maker constitutes a VIE, and changes the evaluation regarding the impact of related parties in the primary beneficiary determination of a VIE. The amendments in ASU 2015-02 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The amendments in ASU 2015-03 require debt issuance costs to be presented in the balance sheet as a reduction to the underlying debt instrument, as opposed to a separate asset. The amendments do not change the method by which such costs are amortized against earnings, nor do they change their classification in the consolidated statements of income, as a component of interest expense. The amendments in ASU 2015-03 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact of adoption.

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Debt (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015 period		Apr. 10, 2015	Dec. 31, 2014		Jun. 27, 2014
Debt Instrument [Line Items]
Weighted Average Rate	3.31%	[1],[2]
Amount Outstanding	$ 2,326,109,000	[2]		$ 2,277,589,000	[2]
Maximum extension period	1 year
Number of extension periods	2
Extension period	6 months
$170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Rate	1.125%
Basis spread on variable rate	1.00%
LIBOR rate in effect	0.18%
Secured Debt [Member]
Debt Instrument [Line Items]
Weighted Average Rate	5.56%	[1],[2]
Amount Outstanding	448,791,000	[2]		449,045,000	[2]
Secured Debt [Member] | Fixed-Rate $105 Million Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	105,000,000
Rate	5.29%	[1],[3]
Amount Outstanding	105,000,000	[3]		105,000,000	[3]
Secured Debt [Member] | Fixed-Rate $105 Million Loan [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Amount repaid			105,000,000
Secured Debt [Member] | Fixed-Rate $125 Million Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	125,000,000
Rate	5.50%	[1],[4]
Amount Outstanding	125,000,000	[4]		125,000,000	[4]
Secured Debt [Member] | Fixed-Rate $42.5 Million Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	42,500,000.0
Rate	5.70%	[1]
Amount Outstanding	42,525,000			42,525,000
Secured Debt [Member] | WDC Mortgage Notes $140 Million[Member]
Debt Instrument [Line Items]
Face amount of debt instrument	140,000,000
Rate	5.76%	[1]
Amount Outstanding	140,000,000			140,000,000
Secured Debt [Member] | Mortgage Loan Maturing September 1, 2021 [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	35,000,000					35,000,000.0
Rate	5.55%	[1],[5]
Amount Outstanding	36,266,000	[5]		36,520,000	[5]
Effective interest rate	3.75%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Weighted Average Rate	2.78%	[1],[2]
Amount Outstanding	1,877,318,000	[2]		1,828,544,000	[2]
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2020 [Member]
Debt Instrument [Line Items]
Amount Outstanding	298,996,000	[6]		298,944,000	[6]
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2020 [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Effective interest rate	3.35%
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	500,000,000
Amount Outstanding	363,000,000	[7],[8]		434,000,000	[7],[8]
Basis spread on variable rate	1.175%
LIBOR rate in effect	0.18%
Unsecured Debt [Member] | $500 Million Unsecured Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.175%	[1],[7]
Unsecured Debt [Member] | $350 Million Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	350,000,000
Rate	3.40%	[1],[9]
Amount Outstanding	348,831,000	[9]		348,800,000	[9]
Effective interest rate	3.45%
Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	300,000,000
Amount Outstanding	300,000,000	[10]		300,000,000	[10]
Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Effective interest rate	2.78%
Unsecured Debt [Member] | $300 million Unsecured 2013 Term Loan Maturing 2019 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.20%	[1],[10]
Unsecured Debt [Member] | $400 Million Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	400,000,000
Rate	4.45%	[1],[11]
Amount Outstanding	396,914,000	[11]		396,832,000	[11]
Unsecured Debt [Member] | $50 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	50,000,000
Amount Outstanding	0			49,968,000
Unsecured Debt [Member] | $50 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.15%	[1]
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	170,000,000
Amount Outstanding	169,577,000	[12]		0	[12]
Unsecured Debt [Member] | $170 Million Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%	[1],[12]
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2016 [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	300,000,000
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2016 [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Effective interest rate	2.39%
Unsecured Debt [Member] | $300 Million 2011 Unsecured Term Loan Maturing 2016 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.15%	[1],[6]
Senior Notes [Member] | $350 Million Senior Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	3.43%
Senior Notes [Member] | $400 Million Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	$ 400,000,000
Effective interest rate	4.48%
Effective interest rate	4.10%

[1] Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of March 31, 2015 and December 31, 2014 is interest-only.

[2] Weighted average is based on contractual balance of outstanding debt and interest rates in the table as of March 31, 2015.

[3] On April 10, 2015, Piedmont repaid in full the balance on the $105 Million Fixed-Rate Loan.

[4] Property collateralized pool includes 1430 Enclave Parkway in Houston, Texas, Windy Point I and II in Schaumburg, Illinois, and 1055 East Colorado Boulevard in Pasadena, California.

[5] The $35 Million Fixed-Rate Loan has a contractual fixed rate of 5.55% ; however, the amortization of the premium recorded in order to adjust the note to its estimated fair value, results in an effective interest rate of 3.75%.

[6] The $300 Million Unsecured 2011 Term Loan has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, the rate on this facility to 2.39% through the original maturity date of November 22, 2016 and 3.35% from November 22, 2016 to January 15, 2020.

[7] Piedmont may select from multiple interest rate options with each draw, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.175% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of 30-day LIBOR draws at a rate of 0.18% (subject to the additional spread mentioned above).

[8] Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of August 21, 2017) provided Piedmont is not then in default and upon payment of extension fees.

[9] The $350 Million Senior Notes have a fixed coupon rate of 3.40%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.45%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.43%.

[10] The $300 Million Unsecured 2013 Term Loan has a stated variable rate; however, Piedmont entered into interest rate swap agreements which effectively fix, absent any changes to Piedmont's credit rating, the rate on this facility to 2.78% .

[11] The $400 Million Senior Notes have a fixed coupon rate of 4.45%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 4.48%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 4.10%.

[12] Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.125% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of a 30-day LIBOR draw at a rate of 0.18% (subject to the additional spread mentioned above).

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Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of March 31, 2015 and December 31, 2014 (in thousands):

Facility	Collateral	Stated Rate(1)			Maturity		Amount Outstanding as of
							March 31, 2015		December 31, 2014
Secured (Fixed)
$105 Million Fixed-Rate Loan	US Bancorp Center	5.29	%	(2)	5/11/2015		$	105,000	$	105,000
$125 Million Fixed-Rate Loan	Four Property Collateralized Pool (3)	5.50	%		4/1/2016		125,000		125,000
$42.5 Million Fixed-Rate Loan	Las Colinas Corporate Center I & II	5.70	%		10/11/2016		42,525		42,525
$140 Million WDC Fixed-Rate Loans	1201 & 1225 Eye Street	5.76	%		11/1/2017		140,000		140,000
$35 Million Fixed-Rate Loan	5 Wall Street	5.55	%	(4)	9/1/2021		36,266		36,520
Subtotal/Weighted Average (5)		5.56	%				448,791		449,045
Unsecured (Variable and Fixed)
$300 Million Unsecured 2011 Term Loan		LIBOR +  1.15%		(6)	1/15/2020		298,996		298,944
$500 Million Unsecured Line of Credit		LIBOR + 1.175%		(7)	8/19/2016	(8)	363,000		434,000
$350 Million Unsecured Senior Notes		3.40	%	(9)	6/1/2023		348,831		348,800
$300 Million Unsecured 2013 Term Loan		LIBOR + 1.20%		(10)	1/31/2019		300,000		300,000
$400 Million Unsecured Senior Notes		4.45	%	(11)	3/15/2024		396,914		396,832
$50 Million Unsecured Term Loan		LIBOR + 1.15%			4/1/2015		—		49,968
$170 Million Unsecured 2015 Term Loan		LIBOR + 1.125%		(12)	5/15/2018		169,577		—
Subtotal/Weighted Average (5)		2.78	%				1,877,318		1,828,544
Total/ Weighted Average (5)		3.31	%				$	2,326,109	$	2,277,589

⁽¹⁾  Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of March 31, 2015 and December 31, 2014 is interest-only.

⁽²⁾  On April 10, 2015, Piedmont repaid in full the balance on the $105 Million Fixed-Rate Loan.

⁽³⁾  Property collateralized pool includes 1430 Enclave Parkway in Houston, Texas, Windy Point I and II in Schaumburg, Illinois, and 1055 East Colorado Boulevard in Pasadena, California.

⁽⁴⁾  The$35 Million Fixed-Rate Loan has a contractual fixed rate of 5.55% ; however, the amortization of the premium recorded in order to adjust the note to its estimated fair value, results in an effective interest rate of 3.75%.

⁽⁵⁾  Weighted average is based on contractual balance of outstanding debt and interest rates in the table as of March 31, 2015.

⁽⁶⁾  The $300 Million Unsecured 2011 Term Loan has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, the rate on this facility to 2.39% through the original maturity date of November 22, 2016 and 3.35% from November 22, 2016 to January 15, 2020.

⁽⁷⁾  Piedmont may select from multiple interest rate options with each draw, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.175% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of 30-day LIBOR draws at a rate of 0.18% (subject to the additional spread mentioned above).

⁽⁸⁾  Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of August 21, 2017) provided Piedmont is not then in default and upon payment of extension fees.

⁽⁹⁾  The $350 Million Senior Notes have a fixed coupon rate of 3.40%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.45%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.43%.

⁽¹⁰⁾  The $300 Million Unsecured 2013 Term Loan has a stated variable rate; however, Piedmont entered into interest rate swap agreements which effectively fix, absent any changes to Piedmont's credit rating, the rate on this facility to 2.78% .

⁽¹¹⁾  The $400 Million Senior Notes have a fixed coupon rate of 4.45%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 4.48%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 4.10%.

⁽¹²⁾  Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.125% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of a 30-day LIBOR draw at a rate of 0.18% (subject to the additional spread mentioned above).

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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividends to common stockholders (in dollars per share)	$ 0.21	$ 0.81

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Intangible lease assets, accumulated amortization	$ 84,212	$ 79,860
Tenant receivables, allowance for doubtful accounts	106	231
Deferred financing costs, accumulated amortization	6,607	6,067
Deferred lease costs, accumulated amortization	152,161	142,915
Liabilities:
Unsecured debt- discount on debt	5,682	5,456
Secured debt- premium on debt	3,137	3,258
Intangible lease liabilities, accumulated amortization	39,682	37,964
Stockholders’ Equity:
Shares-in-trust, shares authorized	150,000,000	150,000,000
Shares-in-trust, shares outstanding	0	0
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	154,339,507	154,324,089
Common stock, shares outstanding	154,339,507	154,324,089
Building and Building Improvements [Member]
Assets:
Buildings and improvements, accumulated depreciation	$ 1,118,327	$ 1,088,062

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Assets Held for Sale and Discontinued Operations

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Assets Held for Sale and Discontinued Operations

Assets Held for Sale and Discontinued Operations

Assets Held for Sale

Assets held for sale as of December 31, 2014 consisted solely of the 3900 Dallas Parkway building. Details are presented below (in thousands):

	March 31, 2015		December 31, 2014
Real estate assets held for sale, net:
Land	$	—	$	1,517
Building and improvements, less accumulated depreciation of $10,342 as of December 31, 2014	—		13,027
Total real estate assets held for sale, net	$	—	$	14,544
Other assets held for sale, net:
Straight-line rent receivables	$	—	$	768
Deferred lease costs, less accumulated amortization of $1,552 as of December 31, 2014	—		496
Total other assets held for sale, net	$	—	$	1,264

The 3900 Dallas Parkway building was subsequently sold during the three months ended March 31, 2015, and no other assets were held for sale as of March 31, 2015. The property was sold for approximately $26.2 million, resulting in a gain of approximately $10.1 million and net sales proceeds of approximately $25.8 million. As the sale of the 3900 Dallas Parkway building did not meet the criteria to be reported as a discontinued operation, the operational results for the building for periods prior to the sale are presented as continuing operations in the accompanying consolidated statements of income, and the gain on sale is presented separately on the face of the income statement.

Discontinued Operations

Asset disposals in previous periods that were previously classified as, and that continue to be reported as, discontinued operations for the three months endedMarch 31, 2015 and 2014 were as follows (in thousands):

Buildings Sold	Location	Date of Sale	Gain/(Loss) on Sale			Net Sales Proceeds
11107 and 11109 Sunset Hills Road	Reston, Virginia	March 19, 2014	$	(102	)	$	22,326
1441 West Long Lake Road	Troy, Michigan	April 30, 2014	$	562		$	7,202
4685 Investment Drive	Troy, Michigan	April 30, 2014	$	747		$	11,198

Details comprising income from discontinued operations for the three months ended March 31, 2015 and 2014 are presented below (in thousands):

	Three Months Ended
	March 31, 2015		March 31, 2014
Revenues:
Rental income	$	—	$	1,174
Tenant reimbursements	—		112
	—		1,286
Expenses:
Property operating costs	—		505
Depreciation	—		83
Amortization	—		223
General and administrative	—		3
	—		814
Other income/(expense)	—		(6		)
Operating income, excluding gain on sale	—		466
Gain on sale of real estate assets	—		(106		)
Income from discontinued operations	$	—	$	360

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 28, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Piedmont Office Realty Trust, Inc.
Entity Central Index Key	0001042776
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		154,391,509

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Stock Based Compensation

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation

Stock Based Compensation

From time to time, Piedmont has granted equity awards to all of its employees. The deferred stock awards are determined by the Compensation Committee of the board of directors of Piedmont and typically vest on the award anniversary date ratably over a multi-year period. Piedmont also has a multi-year performance share program for certain of its employees whereby equity awards may be earned based on the relative performance of Piedmont's total stockholder return as compared with a predetermined peer group's total stockholder return over the same multi-year period. Shares are not awarded until after the end of the multi-year performance period and vest upon award.

A rollforward of Piedmont's equity based award activity for the three months endedMarch 31, 2015 is as follows:

	Shares		Weighted-Average Grant Date Fair Value
Unvested Deferred Stock Awards as of December 31, 2014	506,404		$	18.12
Deferred Stock Awards Granted During Three Months Ended March 31, 2015	—		$	—
Adjustment to Estimated Future Grants of Performance Share Awards During Three Months Ended March 31, 2015	(15,413	)	$	18.51
Deferred Stock Awards Vested During Three Months Ended March 31, 2015	(20,976	)	$	16.48
Deferred Stock Awards Forfeited During Three Months Ended March 31, 2015	—		$	—
Unvested Deferred Stock Awards as of March 31, 2015	470,015		$	18.18

The following table provides additional information regarding stock award activity during the three months endedMarch 31, 2015 and 2014, respectively (in thousands except for per share data):

	Three Months Ended
	March 31, 2015		March 31, 2014
Weighted-Average Grant Date Fair Value of Shares Granted During the Period (per share)	$	—	$	16.45
Total Grant Date Fair Value of Shares Vested During the Period	$	346	$	4
Share-based Liability Awards Paid During the Period(1)	$	—	$	—

⁽¹⁾  Amount reflects the issuance of performance share awards during the period.

A detail of Piedmont’s outstanding employee stock awards as of March 31, 2015 is as follows:

Date of grant	Type of Award	Net Shares Granted (1)	Grant Date Fair Value		Vesting Schedule	Unvested Shares as of March 31, 2015
April 4, 2012	Deferred Stock Award	169,128	$	17.53	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 4, 2013, 2014, and 2015, respectively.	53,868
April 2, 2013	Deferred Stock Award	132,826	$	19.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on April 2, 2014, 2015, and 2016, respectively.	76,156
April 2, 2013	Fiscal Year 2013-2015 Performance Share Program	—	$	18.91	Shares awarded, if any, will vest immediately upon determination of award in 2016.	—	(2)
January 3, 2014	Deferred Stock Award	95,476	$	16.45	Of the shares granted, 20% will vest on January 3, 2015, 2016, 2017, 2018, and 2019, respectively.	82,673
May 9, 2014	Deferred Stock Award	179,897	$	18.47	Of the shares granted, 25% vested on the date of grant, and 25% vested or will vest on May 9, 2015, 2016, and 2017, respectively.	144,287
May 9, 2014	Fiscal Year 2014-2016 Performance Share Program	—	$	18.51	Shares awarded, if any, will vest immediately upon determination of award in 2017.	113,031	(3)
Total						470,015

⁽¹⁾  Amounts reflect the total grant to employees, net of shares surrendered upon vesting to satisfy required minimum tax withholding obligations through March 31, 2015.

⁽²⁾  Estimated based on Piedmont's cumulative total stockholder return ("TSR") for the respective performance period through March 31, 2015. As of March 31, 2015, Piedmont's TSR for the fiscal year 2013-2015 performance share program was below threshold. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

⁽³⁾  Estimated based on Piedmont's cumulative TSR for the respective performance period through March 31, 2015. Share estimates are subject to change in future periods based on both Piedmont's and its peers' stock performance and dividends paid.

During the three months endedMarch 31, 2015 and 2014, Piedmont recognized approximately $0.9 million and $0.6 million of compensation expense related to stock awards, of which $0.8 million and $0.6 million related to the amortization of unvested shares, respectively. During the three months endedMarch 31, 2015, a net total of 15,418 shares were issued to employees, directors, and officers. As of March 31, 2015, approximately $2.3 million of unrecognized compensation cost related to unvested deferred stock awards remained, which Piedmont will record in its consolidated statements of income over a weighted-average vesting period of approximately one year.

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Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Rental income	$ 117,807	$ 110,904
Tenant reimbursements	31,390	24,929
Property management fee revenue	562	487
Total revenues	149,759	136,320
Expenses:
Property operating costs	64,236	58,271
Depreciation	36,232	33,644
Amortization	14,670	14,573
General and administrative	6,407	4,555
Operating Expenses	121,545	111,043
Real estate operating income	28,214	25,277
Other income (expense):
Interest expense	(19,016)	(18,926)
Other income/(expense)	(181)	(90)
Net recoveries from casualty events and litigation settlements	0	3,042
Equity in income/(loss) of unconsolidated joint ventures	159	(266)
Nonoperating Income (Expense)	(19,038)	(16,240)
Income from continuing operations	9,176	9,037
Discontinued operations:
Operating income	0	466
Loss on sale of real estate assets, net	0	(106)
Income from discontinued operations	0	360
Gain on sale of real estate assets, net	10,073	0
Net income	19,249	9,397
Less: Net income attributable to noncontrolling interest	(4)	(4)
Net income attributable to Piedmont	$ 19,245	$ 9,393
Per share information – basic and diluted:
Income from continuing operations and gain on sale of real estate assets (in dollars per share)	$ 0.12	$ 0.06
Income from discontinued operations (in dollars per share)	$ 0.00	$ 0.00
Net income available to common stockholders (in dollars per share)	$ 0.12	$ 0.06
Weighted-average common shares outstanding – basic	154,339,029	154,849,378
Weighted-average common shares outstanding – diluted	154,580,335	155,024,545

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Debt

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Debt

Debt

During the three months ended March 31, 2015, Piedmont entered into a $170 million unsecured term loan facility (the “$170 Million Unsecured 2015 Term Loan”) with a consortium of lenders. The term of the $170 Million Unsecured 2015 Term Loan is approximately three years with a maturity date of May 15, 2018; however, Piedmont may prepay the $170 Million Unsecured 2015 Term Loan, in whole or in part, at any time without premium or penalty. The proceeds of the $170 Million Unsecured 2015 Term Loan were used to pay off the principal maturing on the $50 Million Unsecured Term Loan, and the remaining net proceeds were used to pay down the balance outstanding under the $500 Million Unsecured Line of Credit.

The $170 Million Unsecured 2015 Term Loan has the option to bear interest at varying levels based on (i) the London Interbank Offered Rate (“LIBOR”) or Base Rate, defined as the greater of the prime rate, the federal funds rate plus one-half of one percent, or LIBOR for a one-month period plus one percent, (ii) the credit rating levels issued for the Registrant, and (iii) for LIBOR loans, an interest period selected by Piedmont OP of one, two, three, or six months, or to the extent available from all lenders in each case, one year or periods of less than one month. The stated interest rate spread over LIBOR can vary from 0.9% to 1.75% based upon the then current credit rating of Piedmont. As of March 31, 2015, the stated interest rate spread on the $170 Million Unsecured 2015 Term Loan was 1.125%.

Under the $170 Million Unsecured 2015 Term Loan, Piedmont is subject to certain financial covenants that require, among other things, the maintenance of an unencumbered interest coverage ratio of at least 1.75, an unencumbered leverage ratio of at least 1.60, a fixed charge coverage ratio of at least 1.50, a leverage ratio of no more than 0.60, and a secured debt ratio of no more than 0.40. As of March 31, 2015, Piedmont believes it was in compliance with all financial covenants associated with its debt instruments.

Additionally, during the three months endedMarch 31, 2015, Piedmont incurred additional working capital borrowings of $88.0 million and, utilizing a portion of the proceeds of the $170 Million Unsecured 2015 Term Loan described above, as well as other cash on hand, made repayments totaling $159.0 million on its $500 Million Unsecured Line of Credit. Piedmont also made interest payments on all debt facilities, including interest rate swap cash settlements, of approximately $20.4 million and $16.5 million for the three months endedMarch 31, 2015 and 2014, respectively. Piedmont capitalized interest of $0.8 million and $0.4 million for the three months endedMarch 31, 2015 and 2014, respectively.

The following table summarizes the terms of Piedmont’s indebtedness outstanding as of March 31, 2015 and December 31, 2014 (in thousands):

Facility	Collateral	Stated Rate(1)			Maturity		Amount Outstanding as of
							March 31, 2015		December 31, 2014
Secured (Fixed)
$105 Million Fixed-Rate Loan	US Bancorp Center	5.29	%	(2)	5/11/2015		$	105,000	$	105,000
$125 Million Fixed-Rate Loan	Four Property Collateralized Pool (3)	5.50	%		4/1/2016		125,000		125,000
$42.5 Million Fixed-Rate Loan	Las Colinas Corporate Center I & II	5.70	%		10/11/2016		42,525		42,525
$140 Million WDC Fixed-Rate Loans	1201 & 1225 Eye Street	5.76	%		11/1/2017		140,000		140,000
$35 Million Fixed-Rate Loan	5 Wall Street	5.55	%	(4)	9/1/2021		36,266		36,520
Subtotal/Weighted Average (5)		5.56	%				448,791		449,045
Unsecured (Variable and Fixed)
$300 Million Unsecured 2011 Term Loan		LIBOR +  1.15%		(6)	1/15/2020		298,996		298,944
$500 Million Unsecured Line of Credit		LIBOR + 1.175%		(7)	8/19/2016	(8)	363,000		434,000
$350 Million Unsecured Senior Notes		3.40	%	(9)	6/1/2023		348,831		348,800
$300 Million Unsecured 2013 Term Loan		LIBOR + 1.20%		(10)	1/31/2019		300,000		300,000
$400 Million Unsecured Senior Notes		4.45	%	(11)	3/15/2024		396,914		396,832
$50 Million Unsecured Term Loan		LIBOR + 1.15%			4/1/2015		—		49,968
$170 Million Unsecured 2015 Term Loan		LIBOR + 1.125%		(12)	5/15/2018		169,577		—
Subtotal/Weighted Average (5)		2.78	%				1,877,318		1,828,544
Total/ Weighted Average (5)		3.31	%				$	2,326,109	$	2,277,589

⁽¹⁾  Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of March 31, 2015 and December 31, 2014 is interest-only.

⁽²⁾  On April 10, 2015, Piedmont repaid in full the balance on the $105 Million Fixed-Rate Loan.

⁽³⁾  Property collateralized pool includes 1430 Enclave Parkway in Houston, Texas, Windy Point I and II in Schaumburg, Illinois, and 1055 East Colorado Boulevard in Pasadena, California.

⁽⁴⁾  The$35 Million Fixed-Rate Loan has a contractual fixed rate of 5.55% ; however, the amortization of the premium recorded in order to adjust the note to its estimated fair value, results in an effective interest rate of 3.75%.

⁽⁵⁾  Weighted average is based on contractual balance of outstanding debt and interest rates in the table as of March 31, 2015.

⁽⁶⁾  The $300 Million Unsecured 2011 Term Loan has a stated variable rate; however, Piedmont has entered into interest rate swap agreements which effectively fix, exclusive of changes to Piedmont's credit rating, the rate on this facility to 2.39% through the original maturity date of November 22, 2016 and 3.35% from November 22, 2016 to January 15, 2020.

⁽⁷⁾  Piedmont may select from multiple interest rate options with each draw, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.175% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of 30-day LIBOR draws at a rate of 0.18% (subject to the additional spread mentioned above).

⁽⁸⁾  Piedmont may extend the term for up to one additional year (through two available six month extensions to a final extended maturity date of August 21, 2017) provided Piedmont is not then in default and upon payment of extension fees.

⁽⁹⁾  The $350 Million Senior Notes have a fixed coupon rate of 3.40%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 3.45%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 3.43%.

⁽¹⁰⁾  The $300 Million Unsecured 2013 Term Loan has a stated variable rate; however, Piedmont entered into interest rate swap agreements which effectively fix, absent any changes to Piedmont's credit rating, the rate on this facility to 2.78% .

⁽¹¹⁾  The $400 Million Senior Notes have a fixed coupon rate of 4.45%, however, as a result of the issuance of the notes at a discount, Piedmont recognizes an effective interest rate on this debt issuance of 4.48%. After consideration of the impact of settled interest rate swap agreements, in addition to the issuance discount, the effective interest rate on this debt is 4.10%.

⁽¹²⁾  Piedmont may select from multiple interest rate options, including the prime rate and various-length LIBOR locks. All LIBOR selections are subject to an additional spread (1.125% as of March 31, 2015) over the selected rate based on Piedmont’s current credit rating. The outstanding balance as of March 31, 2015 consisted of a 30-day LIBOR draw at a rate of 0.18% (subject to the additional spread mentioned above).

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Acquisitions

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Acquisitions

Acquisitions

During the three months endedMarch 31, 2015, Piedmont acquired 100% ownership of the following property using proceeds from the $500 Million Unsecured Line of Credit, proceeds from the sale of the 3900 Dallas Parkway building in Plano, Texas (see Note 9), and cash on hand, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Rentable Square Feet	Percentage Leased as of Acquisition		Purchase Price  (in millions)
Park Place on Turtle Creek	Dallas, TX	January 16, 2015	177,844	88	%	$	46.6

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Acquisitions (Tables)

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

During the three months endedMarch 31, 2015, Piedmont acquired 100% ownership of the following property using proceeds from the $500 Million Unsecured Line of Credit, proceeds from the sale of the 3900 Dallas Parkway building in Plano, Texas (see Note 9), and cash on hand, as noted below:

Property	Metropolitan Statistical Area	Date of Acquisition	Rentable Square Feet	Percentage Leased as of Acquisition		Purchase Price  (in millions)
Park Place on Turtle Creek	Dallas, TX	January 16, 2015	177,844	88	%	$	46.6

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Earnings Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

There are no adjustments to “Net income attributable to Piedmont” or “Income from continuing operations” for the diluted earnings per share computations.

Net income per share-basic is calculated as net income available to common stockholders divided by the weighted average number of common shares outstanding during the period. Net income per share-diluted is calculated as net income available to common stockholders divided by the diluted weighted average number of common shares outstanding during the period, including unvested deferred stock awards. Diluted weighted average number of common shares reflects the potential dilution under the treasury stock method that would occur if the remaining unvested deferred stock awards vested and resulted in additional common shares outstanding. Certain unvested deferred stock awards are not included in the calculation because they would be anti-dilutive and have no effect for the periods presented.

The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended
	March 31, 2015	March 31, 2014
Weighted-average common shares – basic	154,339	154,849
Plus incremental weighted-average shares from time-vested conversions:
Deferred stock awards	241	176
Weighted-average common shares – diluted	154,580	155,025

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Fair Value Measurement of Financial Instruments

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurement of Financial Instruments

Fair Value Measurement of Financial Instruments

Piedmont considers its cash, tenant receivables, restricted cash and escrows, accounts payable and accrued expenses, interest rate swap agreements, and debt to meet the definition of financial instruments. The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of March 31, 2015 and December 31, 2014, respectively (in thousands):

	March 31, 2015					December 31, 2014
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents(1)	$	7,479	$	7,479	Level 1	$	12,306	$	12,306	Level 1
Tenant receivables, net(1)	$	30,132	$	30,132	Level 1	$	27,711	$	27,711	Level 1
Restricted cash and escrows(1)	$	671	$	671	Level 1	$	5,679	$	5,679	Level 1
Interest rate swap asset	$	520	$	520	Level 2	$	430	$	430	Level 2
Liabilities:
Accounts payable and accrued expenses(1)	$	16,098	$	16,098	Level 1	$	14,395	$	14,395	Level 1
Interest rate swap liability	$	19,416	$	19,416	Level 2	$	6,417	$	6,417	Level 2
Debt	$	2,326,109	$	2,373,488	Level 2	$	2,277,589	$	2,314,020	Level 2

⁽¹⁾  For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to their short-term maturity.

Piedmont's debt was carried at book value as of March 31, 2015 and December 31, 2014; however, Piedmont's estimate of its fair value is disclosed in the table above. Piedmont uses widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the debt facilities, including the period to maturity of each instrument, and uses observable market-based inputs for similar debt facilities which have transacted recently in the market. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). Scaling adjustments are made to these inputs to make them applicable to the remaining life of Piedmont's outstanding debt. Piedmont has not changed its valuation technique for estimating the fair value of its debt.

Piedmont’s interest rate swap and forward starting interest rate swap agreements presented above, and further discussed in Note 5, are classified as “Interest rate swap” assets and liabilities in the accompanying consolidated balance sheets and were carried at estimated fair value as of March 31, 2015 and December 31, 2014. The valuation of these derivative instruments was determined using widely accepted valuation techniques including discounted cash flow analysis based on the contractual terms of the derivatives, including the period to maturity of each instrument, and uses observable market-based inputs, including interest rate curves and implied volatilities. Therefore, the estimated fair values determined are considered to be based on significant other observable inputs (Level 2). In addition, Piedmont considered both its own and the respective counterparties’ risk of nonperformance in determining the estimated fair value of its derivative financial instruments by estimating the current and potential future exposure under the derivative financial instruments that both Piedmont and the counterparties were at risk for as of the valuation date. The credit risk of Piedmont and its counterparties was factored into the calculation of the estimated fair value of the interest rate swaps; however, as of March 31, 2015 and December 31, 2014, this credit valuation adjustment did not comprise a material portion of the estimated fair value. Therefore, Piedmont believes that any unobservable inputs used to determine the estimated fair values of its derivative financial instruments are not significant to the fair value measurements in their entirety, and does not consider any of its derivative financial instruments to be Level 3 assets or liabilities.

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Derivative Instruments

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

Risk Management Objective of Using Derivatives

In addition to operational risks which arise in the normal course of business, Piedmont is exposed to economic risks such as interest rate, liquidity, and credit risk. In certain situations, Piedmont has entered into derivative financial instruments such as interest rate swap agreements and other similar agreements to manage interest rate risk exposure arising from current or future debt transactions. Interest rate swap agreements involve the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Piedmont’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements.

Cash Flow Hedges of Interest Rate Risk

Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for Piedmont making fixed-rate payments over the life of the agreements without changing the underlying notional amount. As of March 31, 2015, Piedmont was party to various forward starting interest rate swap agreements which fully hedge the variable cash flows associated with all of its outstanding unsecured, variable-rate debt, other than the $500 Million Line of Credit and the $170 Million Unsecured 2015 Term Loan. Additionally, as of March 31, 2015, Piedmont held $500 million of forward starting interest rate swaps to hedge its exposure to the variability in future cash flows associated with potential future debt issuances in 2015 and 2016. The maximum length of time over which Piedmont is hedging its exposure to the variability in future cash flows for forecasted transactions is 131 months.

The detail of Piedmont’s interest rate derivatives outstanding as of March 31, 2015 is as follows:

Interest Rate Derivatives:	Number of Swap Agreements	Associated Debt Instrument	Total Notional Amount (in millions)		Effective Date	Maturity Date
Interest rate swaps	4	$300 Million Unsecured 2011 Term Loan	$	300	11/22/2011	11/22/2016
Interest rate swaps	4	$300 Million Unsecured 2013 Term Loan	200		1/30/2014	1/31/2019
Interest rate swaps	2	$300 Million Unsecured 2013 Term Loan	100		8/29/2014	1/31/2019
Forward starting interest rate swaps	3	$300 Million Unsecured 2011 Term Loan	300		11/22/2016	1/15/2020
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/27/2015	2/27/2022
Forward starting interest rate swaps	4	Potential Future Issuance	250		2/25/2016	2/25/2026
Total			$	1,400

Piedmont has elected to present its interest rate derivatives on its consolidated balance sheets on a gross basis as interest rate swap assets and interest rate swap liabilities. The detail of Piedmont’s interest rate derivatives on a gross and net basis as of March 31, 2015 and December 31, 2014, respectively, is as follows (in thousands):

Interest rate swaps classified as:	March 31, 2015			December 31, 2014
Gross derivative assets	$	520		$	430
Gross derivative liabilities	(19,416		)	(6,417		)
Net derivative liability	$	(18,896	)	$	(5,987	)

All of Piedmont's interest rate derivative agreements outstanding for the periods presented were designated as cash flow hedges of interest rate risk. As such, the effective portion of changes in the estimated fair value of these derivatives is recorded in other comprehensive income ("OCI") and is reclassified into earnings as interest expense in the period that the hedged forecasted transaction affects earnings. In addition, in conjunction with the issuance of various unsecured senior notes during the years ended December 31, 2014 and 2013, Piedmont settled several forward starting swap agreements for gains which were recorded as accumulated other comprehensive income during the respective period and are being amortized as an offset to interest expense over the term of the respective notes on a straight line basis (which approximates the effective interest method). Piedmont classifies cash flows from the settlement of hedging derivative instruments in the same category as the underlying exposure which is being hedged. As the settlements were the result of hedging Piedmont's exposure to interest rate changes and their effect on interest expense, they are classified as operating cash flows in the accompanying consolidated statements of cash flows.

The effective portion of Piedmont's interest rate derivatives, including the gain on settlement of forward swaps described above, that was recorded in the accompanying consolidated statements of income for the three months endedMarch 31, 2015 and 2014, respectively, was as follows:

	Three Months Ended
Derivative in Cash Flow Hedging Relationships (Interest Rate Swaps) (in thousands)	March 31, 2015			March 31, 2014
Amount of gain/(loss) recognized in OCI on derivative	$	(15,205	)	$	(9,886	)
Amount of previously recorded loss reclassified from accumulated OCI into interest expense	$	1,467		$	1,170

Piedmont estimates that approximately $5.7 million will be reclassified from accumulated other comprehensive loss to interest expense over the next twelve months. No gain or loss was recognized related to hedge ineffectiveness or to amounts excluded from effectiveness testing on Piedmont’s cash flow hedges during the three months endedMarch 31, 2015 or 2014.

See Note 7 for fair value disclosures of Piedmont's derivative instruments.

Credit-risk-related Contingent Features

Piedmont has agreements with its derivative counterparties that contain a provision whereby if Piedmont defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Piedmont could also be declared in default on its derivative obligations. If Piedmont were to breach any of the contractual provisions of the derivative contracts, it would be required to settle its obligations under the agreements at their termination value of the estimated fair values plus accrued interest, or approximately $20.3 million as of March 31, 2015. Additionally, Piedmont has rights of set-off under certain of its derivative agreements related to potential termination fees and amounts payable under the agreements, if a termination were to occur.

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Variable Interest Entities and Equity Participation Rights

3 Months Ended

Mar. 31, 2015

Variable Interest Entities [Abstract]

Variable Interest Entities and Equity Participation Rights

Variable Interest Entities and Equity Participation Rights

Variable interest holders who have the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and have the obligation to absorb the majority of losses of the entity or the right to receive significant benefits of the entity must consolidate the VIE.

During the three months ended March 31, 2015, Piedmont paid $4 million to settle the redemption option associated with an equity participation in Medici Atlanta, LLC, eliminating any ongoing third party interest.

A summary of Piedmont’s interests in and consolidation treatment of its outstanding VIEs as of March 31, 2015 and their related carrying values as of December 31, 2014 is as follows (net carrying amount in millions):

Entity	Piedmont’s % Ownership of Entity	Related Building	Consolidated/ Unconsolidated	Net Carrying Amount as of March 31, 2015			Net Carrying Amount as of December 31, 2014			Primary Beneficiary Considerations
1201 Eye Street NW Associates, LLC	49.5%	1201 Eye Street	Consolidated	$	(2.5	)	$	(2.8	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
1225 Eye Street NW Associates, LLC	49.5%	1225 Eye Street	Consolidated	$	0.6		$	(1.1	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
Piedmont 500 W. Monroe Fee, LLC	100%	500 W. Monroe	Consolidated	$	245.7		$	245.3		The Omnibus Agreement with the previous owner includes equity participation rights for the previous owner, if certain financial returns are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such returns are met.
Piedmont TownPark Land, LLC	100%	Land Parcel Adjacent to 400 TownPark building	Consolidated	$	7.9		$	7.9		The equity participation and service fee agreement includes equity participation rights for the third party manager if certain defined events occur and certain returns on investment are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such events occur and returns are achieved.

Each of the VIEs described above has the sole purpose of holding land and office buildings and their resulting operations, and are classified in the accompanying consolidated balance sheets in the same manner as Piedmont’s wholly-owned properties.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Commitments Under Existing Lease Agreements

Certain lease agreements include provisions that, at the option of the tenant, may obligate Piedmont to provide funding for capital improvements. Under its existing lease agreements, Piedmont may be required to fund significant tenant improvements, leasing commissions, and building improvements. In addition, certain agreements contain provisions that require Piedmont to issue corporate or property guarantees to provide funding for capital improvements or other financial obligations. Further, Piedmont classifies such tenant and building improvements into two categories: (i) improvements which incrementally enhance the building's asset value by expanding its revenue generating capacity (“incremental capital expenditures”) and (ii) improvements which maintain the building's existing asset value and its revenue generating capacity (“non-incremental capital expenditures”). As of March 31, 2015, commitments for funding potential non-incremental capital expenditures over the next five years for tenant improvements totaled approximately $46.1 million related to Piedmont's existing lease portfolio over the respective lease terms, the majority of which Piedmont estimates may be required to be funded over the next three years based on when the underlying leases commence. For most of Piedmont’s leases, the timing of the actual funding of these tenant improvements is largely dependent upon tenant requests for reimbursement. In some cases, these obligations may expire with the leases without further recourse to Piedmont.

Additionally, as of March 31, 2015, commitments for incremental capital expenditures for tenant improvements associated with new and existing leases, primarily at value-add properties, totaled approximately $23.8 million.

Contingencies Related to Tenant Audits/Disputes

Certain lease agreements include provisions that grant tenants the right to engage independent auditors to audit their annual operating expense reconciliations. Such audits may result in the re-interpretation of language in the lease agreements which could result in the refund of previously recognized tenant reimbursement revenues, resulting in financial loss to Piedmont. Piedmont recorded reductions in reimbursement revenues related to such tenant audits/disputes of approximately $0 and $0.3 million during the three months endedMarch 31, 2015 and 2014, respectively.

Letters of Credit

As of March 31, 2015, Piedmont was subject to a letter of credit of approximately $0.4 million, which reduces the total outstanding capacity under its $500 Million Unsecured Line of Credit. This letter of credit agreement is scheduled to expire in July 2015; however, it contains an automatic renewal feature, consisting of successive one-year renewal periods, subject to the satisfaction of the credit obligation and certain other limitations.

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Acquisitions (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 sqft
Business Acquisition [Line Items]
Ownership of properties acquired	100.00%
$500 Million Unsecured Line of Credit [Member] | Unsecured Debt [Member]
Business Acquisition [Line Items]
Face amount of debt instrument	$ 500,000,000
Park Place on Turtle Creek [Member]
Business Acquisition [Line Items]
Area of property	177,844
Percentage Leased as of Acquisition	88.00%
Purchase Price (in millions)	$ 46,600,000

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Subsequent Events (Details) (Subsequent Event [Member], USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended
	Apr. 28, 2015	Apr. 15, 2015 sqft	Apr. 29, 2015 sqft
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.21
Copper Ridge Center [Member]
Subsequent Event [Line Items]
Square footage of real estate property		268,000
Percentage leased		87.00%
5601 Headquarters Drive [Member]
Subsequent Event [Line Items]
Square footage of real estate property	166,000
Percentage leased	100.00%
River Corporate Center [Member]
Subsequent Event [Line Items]
Square footage of real estate property			133,000
Percentage leased			100.00%
Sales price of property dispositions			$ 24.6
Sales price per square foot			185

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Subsequent Events

3 Months Ended

Mar. 31, 2015

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Second Quarter Dividend Declaration

On April 28, 2015, the board of directors of Piedmont declared dividends for the second quarter of 2015 in the amount of $0.21 per common share outstanding to stockholders of record as of the close of business on May 29, 2015. Such dividends are to be paid on June 19, 2015.

Property Dispositions

On April 15, 2015, Piedmont entered into a binding contract to sell Copper Ridge Center, an approximately 268,000 square foot, multi-tenant office building located in Lyndhurst, New Jersey, constructed in 1989, and approximately 87% leased to various tenants, including anchor tenant, Ralph Lauren. The contract is subject to customary closing conditions and is anticipated to close during the second quarter of 2015.

On April 28, 2015, Piedmont sold 5601 Headquarters Drive in Plano, Texas, an approximately 166,000 square foot office building constructed in 2001 and 100% leased to Intuit Inc.

On April 29, 2015, Piedmont sold River Corporate Center in Tempe, Arizona, an approximately 133,000 square foot office building constructed in 1998 and 100% leased to US Foods, Inc., for $24.6 million, or $185 per square foot.

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Variable Interest Entities and Equity Participation Rights (Tables)

3 Months Ended

Mar. 31, 2015

Variable Interest Entities [Abstract]

Schedule of Variable Interest Entities

A summary of Piedmont’s interests in and consolidation treatment of its outstanding VIEs as of March 31, 2015 and their related carrying values as of December 31, 2014 is as follows (net carrying amount in millions):

Entity	Piedmont’s % Ownership of Entity	Related Building	Consolidated/ Unconsolidated	Net Carrying Amount as of March 31, 2015			Net Carrying Amount as of December 31, 2014			Primary Beneficiary Considerations
1201 Eye Street NW Associates, LLC	49.5%	1201 Eye Street	Consolidated	$	(2.5	)	$	(2.8	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
1225 Eye Street NW Associates, LLC	49.5%	1225 Eye Street	Consolidated	$	0.6		$	(1.1	)	In accordance with the partnership’s governing documents, Piedmont is entitled to 100% of the cash flow of the entity until certain financial returns are achieved and has sole discretion in directing the management and leasing activities of the building.
Piedmont 500 W. Monroe Fee, LLC	100%	500 W. Monroe	Consolidated	$	245.7		$	245.3		The Omnibus Agreement with the previous owner includes equity participation rights for the previous owner, if certain financial returns are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such returns are met.
Piedmont TownPark Land, LLC	100%	Land Parcel Adjacent to 400 TownPark building	Consolidated	$	7.9		$	7.9		The equity participation and service fee agreement includes equity participation rights for the third party manager if certain defined events occur and certain returns on investment are achieved; however, Piedmont has sole decision making authority and is entitled to the economic benefits of the property until such events occur and returns are achieved.

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Guarantor and Non-Guarantor Financial Information - Condensed Consolidated Statements of Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenues:
Rental income	$ 117,807	$ 110,904
Tenant reimbursements	31,390	24,929
Property management fee revenue	562	487
Total revenues	149,759	136,320
Expenses:
Property operating costs	64,236	58,271
Depreciation	36,232	33,644
Amortization	14,670	14,573
General and administrative	6,407	4,555
Operating Expenses	121,545	111,043
Real estate operating income	28,214	25,277
Other income (expense):
Interest expense	(19,016)	(18,926)
Other income/(expense)	(181)	(90)
Net recoveries from casualty events and litigation settlements	0	3,042
Equity in income/(loss) of unconsolidated joint ventures	159	(266)
Nonoperating Income (Expense)	(19,038)	(16,240)
Income from continuing operations	9,176	9,037
Discontinued operations:
Operating income	0	466
Loss on sale of real estate assets, net	0	(106)
Income from discontinued operations	0	360
Gain on sale of real estate assets, net	10,073	0
Net income	19,249	9,397
Less: Net income attributable to noncontrolling interest	(4)	(4)
Net income attributable to Piedmont	19,245	9,393	43,348
Issuer [Member]
Revenues:
Rental income	18,937	17,400
Tenant reimbursements	4,246	3,861
Property management fee revenue	0	0
Total revenues	23,183	21,261
Expenses:
Property operating costs	10,661	10,044
Depreciation	5,803	5,840
Amortization	1,254	1,111
General and administrative	6,200	4,469
Operating Expenses	23,918	21,464
Real estate operating income	(735)	(203)
Other income (expense):
Interest expense	(13,188)	(9,120)
Other income/(expense)	2,766	2,762
Net recoveries from casualty events and litigation settlements		1,351
Equity in income/(loss) of unconsolidated joint ventures	159	(266)
Nonoperating Income (Expense)	(10,263)	(5,273)
Income from continuing operations	(10,998)	(5,476)
Discontinued operations:
Operating income	0	480
Loss on sale of real estate assets, net		(106)
Income from discontinued operations	0	374
Gain on sale of real estate assets, net	10,073
Net income	(925)	(5,102)
Less: Net income attributable to noncontrolling interest	0	0
Net income attributable to Piedmont	(925)	(5,102)
Guarantor [Member]
Revenues:
Rental income	0	0
Tenant reimbursements	0	0
Property management fee revenue	0	0
Total revenues	0	0
Expenses:
Property operating costs	0	0
Depreciation	0	0
Amortization	0	0
General and administrative	111	77
Operating Expenses	111	77
Real estate operating income	(111)	(77)
Other income (expense):
Interest expense	0	0
Other income/(expense)	0	35
Net recoveries from casualty events and litigation settlements		0
Equity in income/(loss) of unconsolidated joint ventures	0	0
Nonoperating Income (Expense)	0	35
Income from continuing operations	(111)	(42)
Discontinued operations:
Operating income	0	0
Loss on sale of real estate assets, net		0
Income from discontinued operations	0	0
Gain on sale of real estate assets, net	0
Net income	(111)	(42)
Less: Net income attributable to noncontrolling interest	0	0
Net income attributable to Piedmont	(111)	(42)
Non-Guarantor Subsidiaries [Member]
Revenues:
Rental income	99,577	95,157
Tenant reimbursements	27,272	21,179
Property management fee revenue	4,439	4,171
Total revenues	131,288	120,507
Expenses:
Property operating costs	58,494	53,878
Depreciation	30,429	27,804
Amortization	13,416	13,462
General and administrative	7,724	5,961
Operating Expenses	110,063	101,105
Real estate operating income	21,225	19,402
Other income (expense):
Interest expense	(8,949)	(12,939)
Other income/(expense)	174	246
Net recoveries from casualty events and litigation settlements		1,691
Equity in income/(loss) of unconsolidated joint ventures	0	0
Nonoperating Income (Expense)	(8,775)	(11,002)
Income from continuing operations	12,450	8,400
Discontinued operations:
Operating income	0	(14)
Loss on sale of real estate assets, net		0
Income from discontinued operations	0	(14)
Gain on sale of real estate assets, net	0
Net income	12,450	8,386
Less: Net income attributable to noncontrolling interest	(4)	(4)
Net income attributable to Piedmont	12,446	8,382
Eliminations [Member]
Revenues:
Rental income	(707)	(1,653)
Tenant reimbursements	(128)	(111)
Property management fee revenue	(3,877)	(3,684)
Total revenues	(4,712)	(5,448)
Expenses:
Property operating costs	(4,919)	(5,651)
Depreciation	0	0
Amortization	0	0
General and administrative	(7,628)	(5,952)
Operating Expenses	(12,547)	(11,603)
Real estate operating income	7,835	6,155
Other income (expense):
Interest expense	3,121	3,133
Other income/(expense)	(3,121)	(3,133)
Net recoveries from casualty events and litigation settlements		0
Equity in income/(loss) of unconsolidated joint ventures	0	0
Nonoperating Income (Expense)	0	0
Income from continuing operations	7,835	6,155
Discontinued operations:
Operating income	0	0
Loss on sale of real estate assets, net		0
Income from discontinued operations	0	0
Gain on sale of real estate assets, net	0
Net income	7,835	6,155
Less: Net income attributable to noncontrolling interest	0	0
Net income attributable to Piedmont	$ 7,835	$ 6,155

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Property Dispositions and Discontinued Operations (Assets Held for Sale) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate assets held for sale, net		$ 14,544
Total other assets held for sale, net	0	1,264
3900 Dallas Parkway Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total real estate assets held for sale, net	0	14,544
Straight-line rent receivables	0	768
Deferred lease costs, less accumulated amortization of $1,552 as of December 31, 2014	0	496
Accumulated amortization on deferred lease costs	0	1,552
Total other assets held for sale, net	0	1,264
Land [Member] | 3900 Dallas Parkway Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net:	0	1,517
Building and Building Improvements [Member] | 3900 Dallas Parkway Building [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate assets held for sale, net:	0	13,027
Accumulated depreciation (building improvements)	$ 0	$ 10,342

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income attributable to Piedmont	$ 19,245	$ 9,393
Other comprehensive income/(loss):
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 5)	(15,205)	(9,886)
Reclassification of previously recorded loss included in net income (See Note 5)	1,467	1,170
Other comprehensive income/(loss)	(13,738)	(8,716)
Comprehensive income attributable to Piedmont	$ 5,507	$ 677

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements of Piedmont have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. In the opinion of management, the statements for the unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year’s results.

Piedmont’s consolidated financial statements include the accounts of Piedmont, Piedmont’s wholly-owned subsidiaries, any variable interest entity ("VIE") of which Piedmont or any of its wholly-owned subsidiaries is considered to have the power to direct the activities of the entity and the obligation to absorb losses/right to receive benefits, or any entity in which Piedmont or any of its wholly-owned subsidiaries owns a controlling interest. In determining whether Piedmont or Piedmont OP has a controlling interest, the following factors, among others, are considered: equity ownership, voting rights, protective rights of investors, and participatory rights of investors. For further information, refer to the financial statements and footnotes included in Piedmont’s Annual Report on Form 10-K for the year ended December 31, 2014.

All inter-company balances and transactions have been eliminated upon consolidation.

Further, Piedmont has formed special purpose entities to acquire and hold real estate. Each special purpose entity is a separate legal entity and consequently the assets of the special purpose entities are not available to all creditors of Piedmont. The assets owned by these special purpose entities are being reported on a consolidated basis with Piedmont’s assets for financial reporting purposes only.

Use of Estimates

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying consolidated financial statements and notes. Actual results could differ from those estimates.

Income Taxes

Piedmont has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”), and has operated as such, beginning with its taxable year ended December 31, 1998. To qualify as a REIT, Piedmont must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its annual REIT taxable income. As a REIT, Piedmont is generally not subject to federal income taxes. Piedmont is subject to certain taxes related to the operations of properties in certain locations, as well as operations conducted by its taxable REIT subsidiary, POH, which have been provided for in the financial statements.

Recent Accounting Pronouncements

The Financial Accounting Standards Board (the "FASB") has issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). The amendments in ASU 2014-09 change the criteria for the recognition of revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services using a five-step determination process. Steps 1 through 5 involve (i) identifying contracts with a customer, (ii) identifying the performance obligations in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the performance obligations, and (v) recognizing revenue as an entity satisfies a performance obligation. Additionally, lease contracts are specifically excluded from ASU 2014-09. The amendments in ASU 2014-09 are effective in the first quarter of 2017 for Piedmont, and early adoption is not permitted. Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-02, Consolidation (Topic 810), Amendments to the Consolidation Analysis ("ASU 2015-02"). The amendments in ASU 2015-02 modifies the consolidation analysis of certain types of entities. Specifically, ASU 2015-02 changes the assessment criteria of whether limited partnerships are VIEs, eliminates the presumption that general partners should consolidate a limited partner, eliminates certain conditions from the evaluation of whether a fee paid to a decision maker constitutes a VIE, and changes the evaluation regarding the impact of related parties in the primary beneficiary determination of a VIE. The amendments in ASU 2015-02 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact, if any, of adoption.

The FASB has issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The amendments in ASU 2015-03 require debt issuance costs to be presented in the balance sheet as a reduction to the underlying debt instrument, as opposed to a separate asset. The amendments do not change the method by which such costs are amortized against earnings, nor do they change their classification in the consolidated statements of income, as a component of interest expense. The amendments in ASU 2015-03 are effective in the first quarter of 2016 for Piedmont, and Piedmont is currently evaluating the potential impact of adoption.

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Fair Value Measurement of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following table sets forth the carrying and estimated fair value for each of Piedmont’s financial instruments, as well as its level within the GAAP fair value hierarchy, as of March 31, 2015 and December 31, 2014, respectively (in thousands):

	March 31, 2015					December 31, 2014
Financial Instrument	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy	Carrying Value		Estimated Fair Value		Level Within Fair Value Hierarchy
Assets:
Cash and cash equivalents(1)	$	7,479	$	7,479	Level 1	$	12,306	$	12,306	Level 1
Tenant receivables, net(1)	$	30,132	$	30,132	Level 1	$	27,711	$	27,711	Level 1
Restricted cash and escrows(1)	$	671	$	671	Level 1	$	5,679	$	5,679	Level 1
Interest rate swap asset	$	520	$	520	Level 2	$	430	$	430	Level 2
Liabilities:
Accounts payable and accrued expenses(1)	$	16,098	$	16,098	Level 1	$	14,395	$	14,395	Level 1
Interest rate swap liability	$	19,416	$	19,416	Level 2	$	6,417	$	6,417	Level 2
Debt	$	2,326,109	$	2,373,488	Level 2	$	2,277,589	$	2,314,020	Level 2

⁽¹⁾  For the periods presented, the carrying value of these financial instruments approximates estimated fair value due to their short-term maturity.

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Variable Interest Entities and Equity Participation Rights (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Variable Interest Entity [Line Items]
Payment to settle redemption option	$ 4,000,000	$ 0
Medici Atlanta LLC [Member]
Variable Interest Entity [Line Items]
Payment to settle redemption option	4,000,000
Eye Street 1201 NW Associates LLC [Member]
Variable Interest Entity [Line Items]
Piedmont’s % Ownership of Entity	49.50%
Net Carrying Amount	(2,500,000)		(2,800,000)
Variable interest entity, cash flow percent entitled to entity	100.00%
Eye Street 1225 NW Associates LLC [Member]
Variable Interest Entity [Line Items]
Piedmont’s % Ownership of Entity	49.50%
Net Carrying Amount	600,000		(1,100,000)
Variable interest entity, cash flow percent entitled to entity	100.00%
Piedmont 500 W. Monroe Fee LLC [Member]
Variable Interest Entity [Line Items]
Piedmont’s % Ownership of Entity	100.00%
Net Carrying Amount	245,700,000		245,300,000
Land Parcel Adjacent to 400 Town Park Building [Member]
Variable Interest Entity [Line Items]
Piedmont’s % Ownership of Entity	100.00%
Net Carrying Amount	$ 7,900,000		$ 7,900,000

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Guarantor and Non-Guarantor Financial Information

3 Months Ended

Mar. 31, 2015

Guarantor and Non-Guarantor Financial Information [Abstract]

Guarantor and Non-Guarantor Financial Information

Guarantor and Non-Guarantor Financial Information

The following condensed consolidating financial information for Piedmont Operating Partnership, L.P. (the "Issuer"), Piedmont Office Realty Trust, Inc. (the "Guarantor"), and the other directly and indirectly owned subsidiaries of the Guarantor (the "Non-Guarantor Subsidiaries") is provided pursuant to the requirements of Rule 3-10 of Regulation S-X regarding financial statements of guarantors and issuers of guaranteed registered securities. The principal elimination entries relate to investments in subsidiaries and intercompany balances and transactions, including transactions with the Non-Guarantor Subsidiaries.

Condensed Consolidated Balance Sheets
As of March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406		$	—		$	625,934	$	—		$	707,340
Buildings and improvements, less accumulated depreciation	438,933			—			2,795,862		(300		)	3,234,495
Intangible lease assets, less accumulated amortization	1,676			—			67,578		—			69,254
Construction in progress	3,032			—			80,821		—			83,853
Total real estate assets	525,047			—			3,570,195		(300		)	4,094,942
Investments in and amounts due from unconsolidated joint ventures	7,820			—			—		—			7,820
Cash and cash equivalents	3,879			250			3,350		—			7,479
Tenant and straight-line rent receivables, net	37,756			—			167,716		—			205,472
Advances to affiliates	6,142,933			1,284,521			—		(7,427,454		)	—
Investment in subsidiary	—			3,846,399			191		(3,846,590		)	—
Notes receivable	161,350			—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	6,129			116			22,567		(1,262		)	27,550
Goodwill	180,097			—			—		—			180,097
Interest rate swaps	520			—			—		—			520
Deferred financing costs, net	7,023			—			368		—			7,391
Deferred lease costs, net	31,445			—			257,146		—			288,591
Total assets	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862
Liabilities:
Debt, net	$	1,901,208		$	—		$	610,141	$	(185,240	)	$	2,326,109
Accounts payable, accrued expenses, and accrued capital expenditures	16,732			674			103,322		(1,262		)	119,466
Advances from affiliates	392,696			4,909,707			2,185,841		(7,488,244		)	—
Deferred income	5,150			—			20,820		—			25,970
Intangible lease liabilities, net	—			—			42,978		—			42,978
Interest rate swaps	19,416			—			—		—			19,416
Total liabilities	2,335,202			4,910,381			2,963,102		(7,674,746		)	2,533,939
Stockholders’ Equity:
Common stock	—			1,543			—		—			1,543
Additional paid-in capital	3,842,399			3,670,447			1,318		(3,846,590		)	3,667,574
Retained/(cumulative distributions in excess of) earnings	931,835			(3,451,085		)	1,079,974		60,490			(1,378,786		)
Other comprehensive loss	(5,437		)	—			—		—			(5,437		)
Piedmont stockholders’ equity	4,768,797			220,905			1,081,292		(3,786,100		)	2,284,894
Noncontrolling interest	—			—			1,029		—			1,029
Total stockholders’ equity	4,768,797			220,905			1,082,321		(3,786,100		)	2,285,923
Total liabilities and stockholders’ equity	$	7,103,999		$	5,131,286		$	4,045,423	$	(11,460,846	)	$	4,819,862

Condensed Consolidated Balance Sheets
As of December 31, 2014
(in thousands)	Issuer		Guarantor			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets:
Real estate assets, at cost:
Land	$	81,406	$	—		$	621,394	$	—		$	702,800
Buildings and improvements, less accumulated depreciation	442,034		—			2,782,444		(300		)	3,224,178
Intangible lease assets, less accumulated amortization	1,812		—			68,365		—			70,177
Construction in progress	1,355		—			62,038		—			63,393
Real estate assets held for sale, net	14,544		—			—		—			14,544
Total real estate assets	541,151		—			3,534,241		(300		)	4,075,092
Investments in and amounts due from unconsolidated joint ventures	7,798		—			—		—			7,798
Cash and cash equivalents	8,143		1,790			2,373		—			12,306
Tenant and straight-line rent receivables, net	37,238		—			160,005		—			197,243
Advances to affiliates	6,084,243		1,282,443			—		(7,366,686		)	—
Investment in subsidiary	—		3,878,811			192		(3,879,003		)	—
Notes receivable	161,350		—			23,890		(185,240		)	—
Prepaid expenses, restricted cash, escrows, and other assets	10,912		—			23,541		(954		)	33,499
Goodwill	180,097		—			—		—			180,097
Interest rate swaps	430		—			—		—			430
Deferred financing costs, net	7,242		—			425		—			7,667
Deferred lease costs, net	31,340		—			248,765		—			280,105
Other assets held for sale, net	1,264		—			—		—			1,264
Total assets	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501
Liabilities:
Debt, net	$	1,852,434	$	—		$	610,395	$	(185,240	)	$	2,277,589
Accounts payable, accrued expenses, and accrued capital expenditures	19,403		465			115,074		(954		)	133,988
Advances from affiliates	376,122		4,909,362			2,138,140		(7,423,624		)	—
Deferred income	4,998		—			17,217		—			22,215
Intangible lease liabilities, net	—		—			43,277		—			43,277
Interest rate swaps	6,417		—			—		—			6,417
Total liabilities	2,259,374		4,909,827			2,924,103		(7,609,818		)	2,483,486
Stockholders’ Equity:
Common stock	—		1,543			—		—			1,543
Additional paid-in capital	3,874,757		3,670,236			192		(3,879,003		)	3,666,182
Retained/(cumulative distributions in excess of) earnings	928,776		(3,418,562		)	1,067,528		56,638			(1,365,620		)
Other comprehensive loss	8,301		—			—		—			8,301
Piedmont stockholders’ equity	4,811,834		253,217			1,067,720		(3,822,365		)	2,310,406
Noncontrolling interest	—		—			1,609		—			1,609
Total stockholders’ equity	4,811,834		253,217			1,069,329		(3,822,365		)	2,312,015
Total liabilities and stockholders’ equity	$	7,071,208	$	5,163,044		$	3,993,432	$	(11,432,183	)	$	4,795,501

Condensed Consolidated Statements of Income
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	18,937		$	—		$	99,577		$	(707	)	$	117,807
Tenant reimbursements	4,246			—			27,272			(128		)	31,390
Property management fee revenue	—			—			4,439			(3,877		)	562
	23,183			—			131,288			(4,712		)	149,759
Expenses:
Property operating costs	10,661			—			58,494			(4,919		)	64,236
Depreciation	5,803			—			30,429			—			36,232
Amortization	1,254			—			13,416			—			14,670
General and administrative	6,200			111			7,724			(7,628		)	6,407
	23,918			111			110,063			(12,547		)	121,545
Real estate operating income	(735		)	(111		)	21,225			7,835			28,214
Other income (expense):
Interest expense	(13,188		)	—			(8,949		)	3,121			(19,016		)
Other income/(expense)	2,766			—			174			(3,121		)	(181		)
Equity in income of unconsolidated joint ventures	159			—			—			—			159
	(10,263		)	—			(8,775		)	—			(19,038		)
Income from continuing operations	(10,998		)	(111		)	12,450			7,835			9,176
Discontinued operations:
Operating income	—			—			—			—			—
Income from discontinued operations	—			—			—			—			—
Gain on sale of real estate assets	10,073			—			—			—			10,073
Net income	(925		)	(111		)	12,450			7,835			19,249
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(925	)	$	(111	)	$	12,446		$	7,835		$	19,245

Condensed Consolidated Statements of Income
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues:
Rental income	$	17,400		$	—		$	95,157		$	(1,653	)	$	110,904
Tenant reimbursements	3,861			—			21,179			(111		)	24,929
Property management fee revenue	—			—			4,171			(3,684		)	487
	21,261			—			120,507			(5,448		)	136,320
Expenses:
Property operating costs	10,044			—			53,878			(5,651		)	58,271
Depreciation	5,840			—			27,804			—			33,644
Amortization	1,111			—			13,462			—			14,573
General and administrative	4,469			77			5,961			(5,952		)	4,555
	21,464			77			101,105			(11,603		)	111,043
Real estate operating income	(203		)	(77		)	19,402			6,155			25,277
Other income (expense):
Interest expense	(9,120		)	—			(12,939		)	3,133			(18,926		)
Other income/(expense)	2,762			35			246			(3,133		)	(90		)
Net recoveries/(loss) from casualty events and litigation settlements	1,351			—			1,691			—			3,042
Equity in income of unconsolidated joint ventures	(266		)	—			—			—			(266		)
	(5,273		)	35			(11,002		)	—			(16,240		)
Income from continuing operations	(5,476		)	(42		)	8,400			6,155			9,037
Discontinued operations:
Operating income	480			—			(14		)	—			466
Loss on sale of real estate assets	(106		)	—			—			—			(106		)
Income from discontinued operations	374			—			(14		)	—			360
Net income	(5,102		)	(42		)	8,386			6,155			9,397
Less: Net income attributable to noncontrolling interest	—			—			(4		)	—			(4		)
Net income attributable to Piedmont	$	(5,102	)	$	(42	)	$	8,382		$	6,155		$	9,393

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2015
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	(6,974	)	$	426		$	42,343		$	7,835		$	43,630
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(5,091		)	—			(76,267		)	—			(81,358		)
Redemption of noncontrolling interest in unconsolidated variable interest entity	—			—			(4,000		)	—			(4,000		)
Net sales proceeds from wholly-owned properties	25,803			—			—			—			25,803
Deferred lease costs paid	(846		)	—			(3,568		)	—			(4,414		)
Net cash used in investing activities	19,866			—			(83,835		)	—			(63,969		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(242		)	—			—			—			(242		)
Proceeds from debt	257,575			—			—			—			257,575
Repayments of debt	(209,000		)	—			(254		)	—			(209,254		)
Costs of issuance of common stock	—			(90		)	—			—			(90		)
(Distributions to)/repayments from affiliates	(65,489		)	30,601			42,723			(7,835		)	—
Dividends paid and discount on dividend reinvestments	—			(32,477		)	—			—			(32,477		)
Net cash provided by financing activities	(17,156		)	(1,966		)	42,469			(7,835		)	15,512
Net decrease in cash and cash equivalents	(4,264		)	(1,540		)	977			—			(4,827		)
Cash and cash equivalents, beginning of period	8,143			1,790			2,373			—			12,306
Cash and cash equivalents, end of period	$	3,879		$	250		$	3,350		$	—		$	7,479

Condensed Consolidated Statements of Cash Flows
For the three months ended March 31, 2014
(in thousands)	Issuer			Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net Cash Provided by Operating Activities	$	21,395		$	594		$	41,908		$	6,156		$	70,053
Cash Flows from Investing Activities:
Investment in real estate assets and real estate related intangibles, net of accruals	(6,875		)	—			(20,712		)	—			(27,587		)
Net sales proceeds from wholly-owned properties	22,322			—			—			—			22,322
Deferred lease costs paid	(720		)	—			(3,460		)	—			(4,180		)
Net cash used in investing activities	14,727			—			(24,172		)	—			(9,445		)
Cash Flows from Financing Activities:
Deferred financing costs paid	(454		)	—			—			—			(454		)
Proceeds from debt	764,564			—			—			—			764,564
Repayments of debt	(162,000		)	—			(575,000		)	—			(737,000		)
Repurchases of common stock as part of announced plan	—			(54,515		)	—			—			(54,515		)
(Distributions to)/repayments from affiliates	(635,361		)	84,826			556,691			(6,156		)	—
Dividends paid and discount on dividend reinvestments	—			(30,905		)	—			—			(30,905		)
Net cash used in financing activities	(33,251		)	(594		)	(18,309		)	(6,156		)	(58,310		)
Net increase in cash and cash equivalents	2,871			—			(573		)	—			2,298
Cash and cash equivalents, beginning of period	3,261			150			3,562			—			6,973
Cash and cash equivalents, end of period	$	6,132		$	150		$	2,989		$	—		$	9,271