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 June 30, 2013

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 000-51262

COLUMBIA PROPERTY TRUST, INC.

(Exact name of registrant as specified in its charter)

__________________________________

Maryland	20-0068852
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

One Glenlake Parkway, Suite 1200

Atlanta, GA 30328

(Address of principal executive offices)

(Zip Code)

(404) 465-2200

(Registrant's telephone number, including area code)

(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 definitions of "large accelerated filer", "accelerated filer", and "smaller reporting company" in Rule 12b-2 of the Exchange Act (check one).

Large accelerated filer	o	Accelerated filer	o
Non-accelerated filer	x (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

only class of common stock, as of July 31, 2013: 537,048,293 shares

FORM 10-Q

COLUMBIA PROPERTY TRUST, INC.

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION		Page No.
Item 1.	Condensed Consolidated Financial Statements	Page 4
	Consolidated Balance Sheets as of June 30, 2013 (unaudited) and December 31, 2012	Page 5
	Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2013 (unaudited) and 2012 (unaudited)	Page 6
	Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2013 (unaudited) and 2012 (unaudited)	Page 7
	Consolidated Statements of Equity for the Three and Six Months Ended June 30, 2013 (unaudited) and 2012 (unaudited)	Page 8
	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2013 (unaudited) and 2012 (unaudited)	Page 10
	Condensed Notes to Consolidated Financial Statements (unaudited)	Page 11
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	Page 32
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	Page 42
Item 4.	Controls and Procedures	Page 42
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	Page 43
Item 1A.	Risk Factors	Page 43
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	Page 43
Item 3.	Defaults Upon Senior Securities	Page 43
Item 4.	Mine Safety Disclosures	Page 43
Item 5.	Other Information	Page 44
Item 6.	Exhibits	Page 44

Page 2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements contained in this Form 10-Q of Columbia Property Trust, Inc. ("Columbia Property Trust," "we," "our" or "us") other than historical facts may be considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. We intend for all such forward-looking statements to be covered by the applicable safe harbor provisions for forward-looking statements contained in those acts. Such statements include, in particular, statements about our plans, strategies, and prospects and are subject to certain risks and uncertainties, including known and unknown risks, which could cause actual results to differ materially from those projected or anticipated. Therefore, such statements are not intended to be a guarantee of our performance in future periods. Such forward-looking statements can generally be identified by our use of forward-looking terminology such as "may," "will," "expect," "intend," "anticipate," "estimate," "believe," "continue," or other similar words. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date this report is filed with the U.S. Securities and Exchange Commission ("SEC"). We make no representations or warranties (express or implied) about the accuracy of any such forward-looking statements contained in this Form 10-Q, and we do not intend to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

Any such forward-looking statements are subject to risks, uncertainties, and other factors and are based on a number of assumptions involving judgments with respect to, among other things, future economic, competitive, and market conditions, all of which are difficult or impossible to predict accurately. To the extent that our assumptions differ from actual conditions, our ability to accurately anticipate results expressed in such forward-looking statements, including our ability to generate positive cash flow from operations, make distributions to stockholders, and maintain the value of our real estate properties, may be significantly hindered. See Item 1A in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2012 for a discussion of some of the risks and uncertainties that could cause actual results to differ materially from those presented in our forward-looking statements. The risk factors described in our Annual Report are not the only ones we face, but do represent those risks and uncertainties that we believe are material to us. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may also harm our business.

Page 3

PART I. FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The information furnished in the accompanying consolidated balance sheets, and related consolidated statements of operations, comprehensive income, equity and cash flows, reflects all normal and recurring adjustments that are, in management's opinion, necessary for a fair and consistent presentation of the aforementioned financial statements. The accompanying consolidated financial statements should be read in conjunction with the condensed notes to Columbia Property Trust's financial statements and Management's Discussion and Analysis of Financial Condition and Results of Operations included in this quarterly report on Form 10-Q, and with Columbia Property Trust's Annual Report on Form 10-K filed for the year ended December 31, 2012. Columbia Property Trust's results of operations for the three and six months endedJune 30, 2013 are not necessarily indicative of the operating results expected for the full year.

Page 4

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED BALANCE SHEETS

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

	(Unaudited)
	June 30, 2013			December 31, 2012
Assets:
Real estate assets, at cost:
Land	$	786,336		$	789,237
Buildings and improvements, less accumulated depreciation of $635,280 and $580,334, as of June 30, 2013 and December 31, 2012, respectively	3,370,152			3,468,218
Intangible lease assets, less accumulated amortization of $332,936 and $315,840, as of June 30, 2013 and December 31, 2012, respectively	317,232			341,460
Construction in progress	6,781			12,680
Total real estate assets	4,480,501			4,611,595
Cash and cash equivalents	61,667			53,657
Tenant receivables, net of allowance for doubtful accounts of $892 and $117, as of June 30, 2013 and December 31, 2012, respectively	139,473			134,099
Prepaid expenses and other assets	33,208			29,373
Deferred financing costs, less accumulated amortization of $10,081 and $8,527, as of June 30, 2013 and December 31, 2012, respectively	8,952			10,490
Intangible lease origination costs, less accumulated amortization of $247,781 and $230,930, as of June 30, 2013 and December 31, 2012, respectively	186,986			206,927
Deferred lease costs, less accumulated amortization of $29,119 and $24,222, as of June 30, 2013 and December 31, 2012, respectively	106,652			98,808
Investment in development authority bonds	586,000			586,000
Total assets	$	5,603,439		$	5,730,949
Liabilities:
Line of credit and notes payable	$	1,409,245		$	1,401,618
Bonds payable, net of discount of $1,196 and $1,322, as of June 30, 2013 and December 31, 2012, respectively	248,804			248,678
Accounts payable, accrued expenses, and accrued capital expenditures	97,929			102,858
Due to affiliates	18,006			1,920
Deferred income	22,243			28,071
Intangible lease liabilities, less accumulated amortization of $89,592 and $84,326, as of June 30, 2013 and December 31, 2012, respectively	90,867			98,298
Obligations under capital leases	586,000			586,000
Total liabilities	2,473,094			2,467,443
Commitments and Contingencies (Note 6)	—			—
Redeemable Common Stock	121,752			99,526
Equity:
Common stock, $0.01 par value, 900,000,000 shares authorized, 542,288,114 and 547,603,642 shares issued and outstanding as of June 30, 2013 and December 31, 2012, respectively	5,423			5,476
Additional paid-in capital	4,867,077			4,897,782
Cumulative distributions in excess of earnings	(1,739,568		)	(1,634,531		)
Redeemable common stock	(121,752		)	(99,526		)
Other comprehensive loss	(2,587		)	(5,221		)
Total equity	3,008,593			3,163,980
Total liabilities, redeemable common stock, and equity	$	5,603,439		$	5,730,949

See accompanying notes.

Page 5

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per-share amounts)

	(Unaudited)						(Unaudited)
	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenues:
Rental income	$	116,949		$	109,857		$	232,070		$	220,043
Tenant reimbursements	24,451			24,193			49,883			49,273
Hotel income	6,562			6,463			11,516			10,838
Other property income	1,258			458			1,546			2,157
	149,220			140,971			295,015			282,311
Expenses:
Property operating costs	43,130			40,023			86,842			81,261
Hotel operating costs	4,820			4,996			9,081			9,093
Asset and property management fees:
Related-party	—			8,671			5,541			17,493
Other	680			651			1,380			1,350
Depreciation	30,608			27,982			60,860			55,867
Amortization	22,327			26,751			44,237			52,470
Impairment loss on real estate assets	—			—			16,867			—
General and administrative	9,113			6,614			46,020			11,484
	110,678			115,688			270,828			229,018
Real estate operating income	38,542			25,283			24,187			53,293
Other income (expense):
Interest expense	(27,175		)	(26,526		)	(54,435		)	(52,807		)
Interest and other income	9,274			10,012			18,385			20,028
Gain (loss) on interest rate swaps	164			(13		)	221			(89		)
	(17,737		)	(16,527		)	(35,829		)	(32,868		)
Income (loss) before income tax expense	20,805			8,756			(11,642		)	20,425
Income tax expense	(325		)	(398		)	(228		)	(301		)
Income (loss) from continuing operations	20,480			8,358			(11,870		)	20,124
Discontinued operations:
Operating income (loss) from discontinued operations	121			2,494			(151		)	4,978
Gains on disposition of discontinued operations	—			62			10,014			16,947
Income from discontinued operations	121			2,556			9,863			21,925
Net income (loss)	20,601			10,914			(2,007		)	42,049
Less: net income attributable to nonredeemable noncontrolling interests	—			—			—			(4		)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601		$	10,914		$	(2,007	)	$	42,045
Per-share information – basic and diluted:
Income (loss) from continuing operations	$	0.04		$	0.02		$	(0.02	)	$	0.04
Income from discontinued operations	$	0.00		$	0.00		$	0.02		$	0.04
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	0.04		$	0.02		$	0.00		$	0.08
Weighted-average common shares outstanding – basic and diluted	543,262			546,134			544,664			545,867
Distributions per share	$	0.095		$	0.125		$	0.190		$	0.250

See accompanying notes.

Page 6

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	(Unaudited)					(Unaudited)
	Three months ended June 30,					Six months ended June 30,
	2013		2012			2013			2012
Net income (loss) attributable to the common stockholders of Columbia Property Trust,Inc.	$	20,601	$	10,914		$	(2,007	)	$	42,045
Foreign currency translation adjustment realized in discontinued operations	—		—			(83		)	—
Market value adjustment to interest rate swap	2,168		(4,016		)	2,717			(3,408		)
Comprehensive income attributable to the common stockholders of Columbia Property Trust, Inc.	22,769		6,898			627			38,637
Comprehensive income attributable to noncontrolling interests	—		—			—			4
Comprehensive income	$	22,769	$	6,898		$	627		$	38,641

See accompanying notes.

Page 7

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF EQUITY

FOR THE SIX MONTHS ENDED JUNE 30, 2013 (UNAUDITED)

(in thousands, except per-share amounts)

	Stockholders' Equity
	Common Stock					Additional Paid-In Capital			Cumulative Distributions in Excess of Earnings			Redeemable Common Stock			Other Comprehensive Income (Loss)			Total Equity
	Shares		Amount
Balance, December 31, 2012	547,604		$	5,476		$	4,897,782		$	(1,634,531	)	$	(99,526	)	$	(5,221	)	$	3,163,980
Issuance of common stock	6,629		66			46,336			—			—			—			46,402
Redemptions of common stock	(11,945	)	(119		)	(76,914		)	—			—			—			(77,033		)
Increase in redeemable common stock	—		—			—			—			(22,226		)	—			(22,226		)
Distributions to common stockholders ($0.190 per share)	—		—			—			(103,030		)	—			—			(103,030		)
Offering costs	—		—			(127		)	—			—			—			(127		)
Net loss attributable to the common stockholders of Columbia Property Trust, Inc.	—		—			—			(2,007		)	—			—			(2,007		)
Foreign currency translation adjustment	—		—			—			—			—			(83		)	(83		)
Market value adjustment to interest rate swap	—		—			—			—			—			2,717			2,717
Balance, June 30, 2013	542,288		$	5,423		$	4,867,077		$	(1,739,568	)	$	(121,752	)	$	(2,587	)	$	3,008,593

Page 8

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF EQUITY

FOR THE SIX MONTHS ENDED JUNE 30, 2012 (UNAUDITED)

(in thousands, except per-share amounts)

	Stockholders' Equity
	Common Stock					Additional Paid-In Capital			Cumulative Distributions in Excess of Earnings			Redeemable Common Stock			Other Comprehensive Income			Total Columbia Property Trust, Inc. Stockholders' Equity			Nonredeemable Noncontrolling Interests			Total Equity
	Shares		Amount
Balance, December 31, 2011	546,198		$	5,462		$	4,880,806		$	(1,426,550	)	$	(113,147	)	$	84		$	3,346,655		$	317		$	3,346,972
Issuance of common stock	8,796		88			62,634			—			—			—			62,722			—			62,722
Redemptions of common stock	(7,735	)	(77		)	(50,755		)	—			—			—			(50,832		)	—			(50,832		)
Increase in redeemable common stock	—		—			—			—			(38,308		)	—			(38,308		)	—			(38,308		)
Distributions to common stockholders ($0.250 per share)	—		—			—			(135,984		)	—			—			(135,984		)	—			(135,984		)
Distributions to noncontrolling interests	—		—			—			—			—			—			—			(15		)	(15		)
Acquisition of noncontrolling interest in consolidated joint ventures	—		—			5			—			—			—			5			(306		)	(301		)
Net income attributable to common stockholders of Columbia Property Trust, Inc.	—		—			—			42,045			—			—			42,045			—			42,045
Net income attributable to noncontrolling interests	—		—			—			—			—			—			—			4			4
Market value adjustment to interest rate swap	—		—			—			—			—			(3,408		)	(3,408		)	—			(3,408		)
Balance, June 30, 2012	547,259		$	5,473		$	4,892,690		$	(1,520,489	)	$	(151,455	)	$	(3,324	)	$	3,222,895		$	—		$	3,222,895

See accompanying notes.

Page 9

COLUMBIA PROPERTY TRUST, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	(Unaudited)
	Six months ended June 30,
	2013			2012
Cash Flows from Operating Activities:
Net income (loss)	$	(2,007	)	$	42,049
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Straight-line rental income	(13,121		)	(845		)
Depreciation	61,235			60,357
Amortization	43,100			53,330
Impairment losses on real estate assets	16,867			—
Noncash interest expense	1,720			1,897
Gain on interest rate swaps	(3,461		)	(527		)
Gain on sale of discontinued operations	(10,014		)	(16,947		)
Changes in assets and liabilities, net of acquisitions:
Decrease in tenant receivables, net	5,872			2,164
Decrease (increase) in prepaid expenses and other assets	(3,989		)	2,257
Decrease in accounts payable and accrued expenses	(4,422		)	(3,000		)
Increase (decrease) in due to affiliates	16,205			(1,744		)
Decrease in deferred income	(5,664		)	(5,343		)
Net cash provided by operating activities	102,321			133,648
Cash Flows from Investing Activities:
Net proceeds from the sale of real estate	65,928			57,747
Investment in real estate	(22,495		)	(14,439		)
Deferred lease costs paid	(9,816		)	(15,839		)
Net cash provided by investing activities	33,617			27,469
Cash Flows from Financing Activities:
Financing costs paid	(240		)	(3,112		)
Proceeds from lines of credit and notes payable	120,000			479,000
Repayments of lines of credit and notes payable	(112,227		)	(490,998		)
Issuance of common stock	46,402			62,722
Redemptions of common stock	(78,609		)	(51,256		)
Distributions paid to stockholders	(56,628		)	(73,262		)
Distributions paid to stockholders and reinvested in shares of our common stock	(46,402		)	(62,722		)
Offering costs paid	(121		)	—
Redemption of noncontrolling interest	—			(301		)
Distributions paid to nonredeemable noncontrolling interests	—			(15		)
Net cash used in financing activities	(127,825		)	(139,944		)
Net increase in cash and cash equivalents	8,113			21,173
Effect of foreign exchange rate on cash and cash equivalents	(103		)	(23		)
Cash and cash equivalents, beginning of period	53,657			39,468
Cash and cash equivalents, end of period	$	61,667		$	60,618

See accompanying notes.

Page 10

COLUMBIA PROPERTY TRUST, INC.

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

JUNE 30, 2013

(unaudited)

1. Organization

Columbia Property Trust, Inc. ("Columbia Property Trust") is a Maryland corporation that operates in a manner as to qualify as a real estate investment trust ("REIT") for federal income tax purposes and engages in the acquisition and ownership of commercial real estate properties, including properties that have operating histories, are newly constructed, or are under construction. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, develops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through joint ventures. References to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect, and consolidated joint ventures.

Columbia Property Trust typically invests in high-quality, income-generating office properties leased to creditworthy companies and governmental entities. As of June 30, 2013, Columbia Property Trust owned controlling interests in 60 office properties and one hotel, which includes 82operational buildings. These properties are comprised of approximately 20.8 million square feet of commercial space and are located in 19 states and the District of Columbia. As of June 30, 2013, 59 of the office properties were wholly owned and the remaining property was owned through a consolidated subsidiary; the office properties were approximately 93.0% leased.

From inception through February 27, 2013, Columbia Property Trust operated as an externally advised REIT pursuant to an advisory agreement under which a subsidiary of Wells Real Estate Funds ("WREF"), Columbia Property Trust Advisory Services, LLC ("Columbia Property Trust Advisory Services"), performed certain key functions on behalf of Columbia Property Trust, including, among others, managing the day-to-day operations, investing capital proceeds, and arranging financings. Also during this period of time, a subsidiary of WREF, Columbia Property Trust Services, LLC ("Columbia Property Trust Services"), provided the personnel necessary to carry out property management services on behalf of Wells Management Company, Inc. ("Wells Management") and its affiliates pursuant to a property management agreement. The advisory agreement and property management agreement are described in Note 8, Related-Party Transactions and Agreements. 

On February 28, 2013, Columbia Property Trust became a self-managed company by terminating the above-mentioned advisory agreement and property management agreement, and acquiring Columbia Property Trust Advisory Services and Columbia Property Trust Services. As a result, the contractual services described above are now performed by employees of Columbia Property Trust (except for certain investor services). Contemporaneous with this transaction, Columbia Property Trust entered into a consulting agreement and an investor services agreement with WREF for the remainder of 2013. While no fees were paid to execute these acquisitions, Columbia Property Trust will pay fees to WREF for consulting and investor services for the remainder of 2013. For additional details about this transaction and the related agreements, please refer to Note 8, Related-Party Transactions and Agreements.

At present, Columbia Property Trust is preparing for a stockholder liquidity event and believes that listing on a national exchange will provide the most flexible means by which to maximize its long-term value. Thus, Columbia Property Trust is taking steps to position the company to be able to list its shares later this year, should market conditions support that strategy. In the event that Columbia Property Trust's stock is not listed on a national securities exchange by October 2015, Columbia Property Trust must either seek stockholder approval to extend or amend this listing deadline or seek stockholder approval to begin liquidating investments and distributing the resulting proceeds to the stockholders. If Columbia Property Trust seeks stockholder approval to extend or amend this listing date and does not obtain it, Columbia Property Trust would then be required to seek stockholder approval to liquidate. In this circumstance, if Columbia Property Trust seeks and does not obtain approval to liquidate, Columbia Property Trust would not be required to list or liquidate and could continue to operate indefinitely as an unlisted company.

From December 2003 through June 2010, Columbia Property Trust raised proceeds through three uninterrupted public offerings of shares of its common stock. Through July 7, 2013, Columbia Property Trust offered shares of its common stock to its current investors through its distribution reinvestment plan ("DRP") pursuant to a registration statement on Form S-3. As of June 30, 2013, Columbia Property Trust had raised gross offering proceeds from the sale of common stock under its public offerings of approximately $6.2 billion. After deductions from such gross offering proceeds for selling commissions and dealer-manager fees of approximately $509.5 million, acquisition fees of approximately $116.8 million, other organization and offering expenses of approximately $76.1 million, and common stock redemptions pursuant to its share redemption program (the "SRP") of

Page 11

approximately $774.3 million, Columbia Property Trust had received aggregate net offering proceeds of approximately $4.7 billion. Substantially all of Columbia Property Trust's net offering proceeds have been invested in real estate. In preparation for listing, Columbia Property Trust terminated the SRP effective July 31, 2013.

2. Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("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 these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation. For further information, refer to the financial statements and footnotes included in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2012.

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets and liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Site improvements	15 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining

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whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of our assets may be carried at more than an amount that could be realized in a current disposition transaction.

Projections of expected future operating cash flows require that Columbia Property Trust estimates 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 discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of our real estate assets and related intangible assets and net income (loss).

In connection with furthering its portfolio repositioning efforts, in the first quarter of 2013, Columbia Property Trust initiated a process to market for sale a group of 18 properties. Pursuant to the accounting policy outlined above, Columbia Property Trust evaluated the recoverability of the carrying values of each of the properties in this group and determined that the 120 Eagle Rock property in East Hanover, New Jersey and the 333 & 777 Republic Drive property in Allen Park, Michigan are no longer recoverable due to shortening the respective expected property holding periods in connection with these repositioning efforts. As a result, Columbia Property Trust reduced the carrying value of the 120 Eagle Rock property and the 333 & 777 Republic Drive property to reflect their respective fair values estimated based on projected discounted future cash flows and recorded corresponding property impairment losses of $11.7 million and $5.2 million, respectively, in the first quarter of 2013.

The fair value measurements used in this evaluation of nonfinancial assets are considered to be Level 3 valuations within the fair value hierarchy outlined above, as there are significant unobservable inputs. Examples of inputs that were utilized in the fair value calculations include estimated holding periods, discount rates, market capitalization rates, expected lease rental rates, and potential sales prices. The table below represents the detail of the adjustments recognized for the six months endedJune 30, 2013 (in thousands) using Level 3 inputs. There were no adjustments recognized during the six months endedJune 30, 2012.

Property	Net Book Value		Impairment Loss Recognized			Fair Value
120 Eagle Rock	$	23,808	$	(11,708	)	$	12,100
333 & 777 Republic Drive	$	13,359	$	(5,159	)	$	8,200

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of June 30, 2013, none of Columbia Property Trust's properties met the criteria to be classified as held for sale in the accompanying balance sheet.

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Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessor

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail). As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
June 30, 2013	Gross	$	85,204		$	454,291		$	434,767		$	180,459
	Accumulated Amortization	(57,905		)	(263,015		)	(247,781		)	(89,592		)
	Net	$	27,299		$	191,276		$	186,986		$	90,867
December 31, 2012	Gross	$	86,696		$	459,931		$	437,857		$	182,624
	Accumulated Amortization	(56,259		)	(248,600		)	(230,930		)	(84,326		)
	Net	$	30,437		$	211,331		$	206,927		$	98,298

Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended June 30, 2013	$	1,453	$	9,919	$	10,017	$	3,705
For the three months ended June 30, 2012	$	2,254	$	12,608	$	10,498	$	4,174
For the six months ended June 30, 2013	$	3,138	$	20,054	$	19,941	$	7,431
For the six months ended June 30, 2012	$	4,688	$	25,980	$	21,145	$	8,415

The remaining net intangible assets and liabilities as of June 30, 2013 will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the six months ending December 31, 2013	$	2,954	$	19,442	$	19,767	$	7,363
For the years ending December 31:
2014	5,581		35,447		36,815		14,362
2015	4,580		31,399		32,938		12,828
2016	3,848		24,761		25,907		10,398
2017	1,979		18,366		19,297		8,306
2018	1,168		13,457		13,760		7,557
Thereafter	7,189		48,404		38,502		30,053
	$	27,299	$	191,276	$	186,986	$	90,867

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount 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 lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively,

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and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below-market lease assets of approximately $110.7 million as of June 30, 2013 and December 31, 2012, and recognized amortization of these assets of approximately $0.5 million for the three months ended June 30, 2013 and 2012 and $1.0 million for the six months ended June 30, 2013 and 2012.

As of June 30, 2013, the remaining net below-market lease asset will be amortized as follows (in thousands):

For the six months ending December 31, 2013	$	1,034
For the years ending December 31:
2014	2,069
2015	2,069
2016	2,069
2017	2,069
2018	2,069
Thereafter	87,794
	$	99,173

Prepaid Expenses and Other Assets

Prepaid expenses and other assets primarily are comprised of escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses and other assets will be expensed as incurred or reclassified to other asset accounts upon being put into service in future periods.     

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.

The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	June 30, 2013			December 31, 2012
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(2,587	)	$	(5,305	)
Derivatives not designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(9,648	)	$	(13,109	)

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable. The fair value of Columbia Property Trust's interest rate swaps were $(12.2) million and $(18.4) million at June 30, 2013 and December 31, 2012, respectively.

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	Six months ended June 30,
	2013		2012
Market value adjustment to interest rate swaps designated as hedging instruments and included in   other comprehensive income	$	2,717	$	(3,408	)
Gain (loss) on interest rate swap recognized through earnings	$	221	$	(89	)

During the periods presented, there was no hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment.

Income Taxes

Columbia Property Trust 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, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), formerly Wells TRS II, LLC; Columbia KCP TRS, LLC ("Columbia KCP TRS"), formerly Wells KCP TRS, LLC; and Wells Energy TRS, LLC ("Wells Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

3. Real Estate and Other Transactions

Acquisitions

Columbia Property Trust did not acquire any real properties during the six months ended June 30, 2013.

As described in Note 1, Organization, Columbia Property Trust acquired Columbia Property Trust Advisory Services and Columbia Property Trust Services on February 28, 2013. The following unaudited pro forma statements of operations presented for the six months ended June 30, 2013 and the three and six months endedJune 30, 2012 have been prepared for Columbia Property Trust to give effect to the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services as if the acquisitions occurred on January 1, 2012. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services been consummated as of January 1, 2012 (in thousands).

	Three months ended June 30,		Six months ended June 30,
	2012		2013		2012
Revenues	$	142,775	$	296,244	$	286,076
Net income attributable to common stockholders	$	18,919	$	31,770	$	23,719

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Dispositions

On March 21, 2013, Columbia Property Trust closed on the sale of the Dvintsev Business Center - Tower B building in Moscow, Russia and its holding entity, Landlink Ltd., which was 100% owned by Columbia Property Trust, for $67.5 million, exclusive of transaction costs, resulting in a gain on disposition of discontinued operations in the accompanying consolidated statement of operations of $10.0 million.

4. Line of Credit and Notes Payable

As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following line of credit and notes payable indebtedness outstanding (excluding bonds payable; see Note 5, Bonds Payable) in thousands:

Facility	June 30, 2013		December 31, 2012
$450 Million Term Loan	$	450,000	$	450,000
Market Square Buildings mortgage note	325,000		325,000
333 Market Street Building mortgage note	207,936		208,308
100 East Pratt Street Building mortgage note	105,000		105,000
Wildwood Buildings mortgage note	90,000		90,000
JPMorgan Chase Credit Facility	51,000		42,000
263 Shuman Boulevard Building mortgage note	49,000		49,000
SanTan Corporate Center mortgage notes	39,000		39,000
One Glenlake Building mortgage note	35,977		37,204
Three Glenlake Building mortgage note	26,423		26,264
215 Diehl Road Building mortgage note	21,000		21,000
544 Lakeview Building mortgage note	8,909		8,842
Total indebtedness	$	1,409,245	$	1,401,618

The estimated fair value of Columbia Property Trust's line of credit and notes payable as of June 30, 2013 and December 31, 2012 was approximately $1,420.5 million and $1,433.1 million, respectively. Columbia Property Trust estimated the fair value of its line of credit by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates. The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized. During the six months ended June 30, 2013 and 2012, Columbia Property Trust made interest payments of approximately $30.4 million and $24.5 million, respectively. There was no interest capitalized in either period. As of June 30, 2013, Columbia Property Trust believes it was in compliance with the restrictive covenants on its term loan, outstanding line of credit, and notes payable obligations.

5. Bonds Payable

In 2011, Columbia Property Trust issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value (the "2018 Bonds Payable"). Columbia Property Trust received proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. In the accompanying consolidated balance sheets, the 2018 Bonds Payable are shown net of the initial issuance discount of approximately $1.8 million, which is amortized to interest expense over the term of the 2018 Bonds Payable using the effective interest method. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018. Interest payments of $7.3 million were made on the 2018 Bonds Payable during the six months ended June 30, 2013. As of June 30, 2013, Columbia Property Trust believes it was in compliance with the restrictive covenants on the 2018 Bonds Payable.

The estimated fair value of the 2018 Bonds Payable as of June 30, 2013 and December 31, 2012 was approximately $251.0 million and $250.9 million, respectively. The fair value of the 2018 Bonds Payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing as the 2018 Bonds Payable arrangements as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

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6. Commitments and Contingencies

Commitments Under Existing Lease Agreements

Certain lease agreements include provisions that, at the option of the tenant, may obligate Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of June 30, 2013, no such options have been exercised that had not been materially satisfied.

Litigation

Columbia Property Trust is subject to various legal proceedings, claims and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations or financial condition of Columbia Property Trust.

7.     Supplemental Disclosures of Noncash Investing and Financing Activities

Outlined below are significant noncash investing and financing activities for the six months ended June 30, 2013 and 2012 (in thousands):

	Six months ended June 30,
	2013			2012
Other assets assumed at acquisition	$	741		$	—
Other liabilities assumed at acquisition	$	741		$	—
Other liabilities settled at disposition	$	872		$	—
Interest accruing to notes payable	$	159		$	152
Amortization of discounts (premiums) on debt	$	(304	)	$	193
Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	$	2,717		$	(3,408	)
Accrued capital expenditures and deferred lease costs	$	13,408		$	5,432
Accrued deferred financing costs	$	—		$	10
Accrued offering costs	$	6		$	—
Accrued redemptions of common stock	$	2,079		$	1,216
Increase in redeemable common stock	$	22,226		$	38,308

8. Related-Party Transactions and Agreements

Advisory Agreement

From December 2003 through February 28, 2013, Columbia Property Trust was party to uninterrupted advisory agreements with affiliates of WREF (the "Advisor"), pursuant to which the Advisor acted as Columbia Property Trust's external advisor and performed certain key functions on behalf of Columbia Property Trust, including, among others, the investment of capital proceeds and management of day-to-day operations (the "Advisory Agreement"). As discussed in detail below, in connection with Columbia Property Trust's transition to a self-managed structure, the most recent advisory agreement was terminated effective February 28, 2013.

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Under the terms of the Advisory Agreement most recently in place, Columbia Property Trust incurred fees and reimbursements payable to the Advisor for services as described below:

• Asset management fees were incurred monthly at one-twelfth of 0.625% of the lesser of (i) gross cost, as defined, of all properties of Columbia Property Trust (other than those that failed to meet specified occupancy thresholds) and investments in joint ventures, or (ii) the aggregate value of Columbia Property Trust's interest in the properties and joint ventures as established with the most recent asset-based valuation, until the monthly payment equals $2.5 million (or $30.5 million annualized), as of the last day of each preceding month. Columbia Property Trust paid fees at the cap in January and February 2013. With respect to (ii) above, Columbia Property Trust's published net asset-based valuations did not impact asset management fees incurred due to continued applicability of the cap described above.

• Reimbursement for all costs and expenses the Advisor incurred in fulfilling its duties as the asset portfolio manager, generally included (i) wages and salaries and other employee-related expenses of the Advisor's employees, who performed a full range of real estate services for Columbia Property Trust, including management, administration, operations, and marketing, and are billed to Columbia Property Trust based on the amount of time spent on Columbia Property Trust by such personnel, provided that such expenses are not reimbursed if incurred in connection with services for which the Advisor received a disposition fee (described below) or an acquisition fee; and (ii) amounts paid for an individual retirement account, or "IRA," custodial service costs allocated to Columbia Property Trust accounts. The Advisory Agreement limited the amount of reimbursements to the Advisor of "portfolio general and administrative expenses" and "personnel expenses," as defined, to the extent they would exceed $18.2 million and $10.0 million, respectively, during 2013.

• Acquisition fees were incurred at 1.0% of property purchase price (excluding acquisition expenses); however, in no event could total acquisition fees for the calendar year exceed 2.0% of total gross offering proceeds. Columbia Property Trust also reimbursed the Advisor for expenses it paid to third parties in connection with acquisitions or potential acquisitions. Per the Transition Services Agreement discussed below, acquisition fees payable to the Advisor for 2012 and 2013 had an aggregate cap of $1.5 million. Columbia Property Trust paid acquisition fees of $1.5 million related to the acquisition on the 333 Market Street Building in San Francisco, California, in December 2012. As a result, no acquisition fees will be paid to the Advisor during 2013.

• The disposition fee payable for the sale of any property for which the Advisor provided substantial services was the lesser of (i) 0.3% or (ii) the broker fee paid to a third-party broker in connection with the sale.

• Reimbursement of organization and offering costs paid by the Advisor on behalf of Columbia Property Trust, not to exceed 2.0% of gross offering proceeds.

• For January and February 2013 Columbia Property Trust paid occupancy costs of $42,000 to the Advisor's for use of dedicated office space.

Transition Services Agreement

For the period from July 1, 2012 through December 31, 2013, Columbia Property Trust, Columbia Property Trust Advisory Services, and WREF are parties to an agreement under which WREF provides services to support the transition of Columbia Property Trust from an externally advised management platform to a self-managed structure (the "Transition Services Agreement"). Pursuant to the Transition Services Agreement, (i) WREF was required to transfer the assets and employees necessary to provide the services under the Advisory Agreement (other than investor services and property management) to Columbia Property Trust Advisory Services by January 1, 2013; provided that if WREF was not able to transfer certain assets by then, WREF was required to use its commercially reasonable best efforts to transfer such delayed assets as promptly as possible, but no later than June 30, 2013; and (ii) Columbia Property Trust had the option to acquire Columbia Property Trust Advisory Services from WREF at any time during 2013 (the "Columbia Property Trust Advisory Services Assignment Option"). The Columbia Property Trust Advisory Services Assignment Option closed as of February 28, 2013, and all assets were transferred by June 30, 2013. No payment was associated with the assignment; however, Columbia Property Trust is required to pay WREF for the work required to transfer sufficient employees, proprietary systems and processes, and assets to Columbia Property Trust Advisory Services to prepare for a successful transition to a self-managed structure a total of $6.0 million payable in 12 monthly installments of $0.5 million commencing on July 31, 2012. In addition, Columbia Property Trust and WREF will each pay half of any out-of-pocket and third-party costs and expenses incurred in connection with providing these services, provided that Columbia Property Trust's obligation to reimburse WREF for such expenses is limited to approximately $250,000 in the aggregate. Pursuant to the Transition Services Agreement at the close of the Columbia Property Trust Advisory Services Assignment Option, Columbia Property Trust entered into a consulting services agreement with WREF as described below.

On December 28, 2012, the Transition Services Agreement was amended and Wells Management and Columbia Property Trust Services were made parties to the agreement. Pursuant to the amendment, Columbia Property Trust could acquire Columbia

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Property Trust Services, the entity that provided personnel to carry out property management services on behalf of Wells Management and its affiliates, in connection with exercising the Columbia Property Trust Advisory Services Assignment Option.  Columbia Property Trust exercised this option on February 28, 2013. No payment was associated with this assignment; however, Columbia Property Trust is obligated to pay a fee to WREF of  approximately $2.8 million in monthly installments from July 2013 through December 2013. The fees paid under the Transition Services Agreement are included in general and administrative expense in the accompanying consolidated statement of operations. The Transition Services Agreement is terminable if there is a material breach by WREF that is not cured, or if WREF is in an insolvency proceeding. Otherwise, if Columbia Property Trust elects to terminate the agreement early, all remaining payments due under the agreement will be accelerated.

Investor Services Agreement

Columbia Property Trust and WREF entered into an investor services agreement, effective January 1, 2013 through February 28, 2013, that required WREF to provide certain investor and transfer agent support services to Columbia Property Trust, which were previously provided under the advisory agreement dated March 30, 2011 (the "Investor Services Agreement"). As the sole consideration for these services, Columbia Property Trust reimbursed WREF for expenses incurred in connection with carrying out such services, subject to the cap on "portfolio general and administrative expenses" and "personnel expenses" included in the Advisory Agreement and, thus, did not incur a separate fee.

2013 Investor Services Agreement

Effective February 28, 2013, upon the effective date of the Columbia Property Trust Advisory Services Assignment Option, Columbia Property Trust entered into an agreement with WREF, which requires WREF to provide the investor and transfer agent support services to Columbia Property Trust that were previously provided for under the Investor Services Agreement (the "2013 Investor Services Agreement"). The 2013 Investor Services Agreement requires Columbia Property Trust to compensate WREF for these services by reimbursing the related expenses and payroll costs, plus a premium.

Consulting Services Agreement

On February 28, 2013, the Columbia Property Trust Advisory Services Assignment Option and Columbia Property Trust Services Assignment Option closed, and in connection therewith, the Advisory Agreement and Investor Services Agreement terminated and Columbia Property Trust entered into a consulting services agreement with WREF (the "Consulting Services Agreement"). Under the Consulting Services Agreement, WREF will provide consulting services with respect to the same matters that the Advisor provided services under the most recently effective advisory agreement. Payments under the Consulting Services Agreement are monthly fees in the same amount as the asset management fee that would have been paid under the most recently effective advisory agreement, if the most recently effective advisory agreement was not terminated. No acquisition or disposition fees are payable under the Consulting Services Agreement. The Consulting Services Agreement will terminate on December 31, 2013. If Columbia Property Trust elects to terminate the Consulting Services Agreement early for cause, Columbia Property Trust would not be required to make further payments under the agreement other than fees earned by WREF and unpaid at the time of termination. If Columbia Property Trust terminates the Consulting Services Agreement other than for cause, Columbia Property Trust would be required to make a fee acceleration payment, which is calculated as the fees incurred in the last month prior to termination, adjusted for partial months, multiplied by the number of months remaining between the time of termination and December 31, 2013. The fees incurred under the Consulting Services Agreement are included in general and administrative expense in the accompanying consolidated statement of operations.

Property Management Agreement

Columbia Property Trust was party to master property management, leasing, and construction agreements (the "Property Management Agreement") with affiliates of WREF (the "Property Manager") until February 28, 2013, on which date Columbia Property Trust terminated the Property Management Agreement contemporaneous with acquiring Columbia Property Trust Services. As a result, property management services are now performed by employees of Columbia Property Trust. While no fee was paid to execute this acquisition, Columbia Property Trust is obligated to pay a fee to WREF totaling $2.8 million from July through December 2013 for the transition of property management services to Columbia Property Trust Services.

During January and February 2013, the Property Manager received the following fees and reimbursements in consideration for supervising the management, leasing, and construction of certain Columbia Property Trust properties:

• Property management fees in an amount equal to a percentage negotiated for each property managed by the Property Manager of the gross monthly income collected for that property for the preceding month;

• Leasing commissions for new, renewal, or expansion leases entered into with respect to any property for which the Property Manager serves as leasing agent equal to a percentage as negotiated for that property of the total base rental and

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operating expenses to be paid to Columbia Property Trust during the applicable term of the lease, provided, however, that no commission shall be payable as to any portion of such term beyond ten years;

• Initial lease-up fees for newly constructed properties under the agreement, generally equal to one month's rent;

• Fees equal to a specified percentage of up to 5.0% of all construction build-out funded by Columbia Property Trust, given as a leasing concession, and overseen by the Property Manager; and

• Other fees as negotiated with the addition of each specific property covered under the agreement.

Related-Party Costs

Pursuant to the terms of the agreements described above, Columbia Property Trust incurred the following related-party costs for the three and six months endedJune 30, 2013 and 2012, respectively (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Investor services	$	278	$	—	$	369	$	—
Administrative reimbursements, net(1)	70		2,839		1,891		5,591
Other	20		—		69		—
Consulting fees(2)	—		—		25,417		—
Transition services(3)	—		—		5,750		—
Asset management fees	—		8,125		5,083		16,250
Property management fees	—		1,053		523		2,279
Construction fees(4)	—		20		139		61
Total	$	368	$	12,037	$	39,241	$	24,181

⁽¹⁾ Administrative reimbursements are presented net of reimbursements from tenants of approximately $1.1 million for the three months ended June 30, 2012 and approximately $0.7 million and $2.2 million for the six months ended June 30, 2013 and 2012, respectively.

⁽²⁾  $10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million will be paid ratably over the remainder of 2013.

⁽³⁾  $3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million will be paid in the third quarter of 2013; and the remaining $1.3 million will be paid in the fourth quarter of 2013.

⁽⁴⁾  Construction fees are capitalized to real estate assets as incurred.

Columbia Property Trust incurred no related-party commissions, dealer-manager fees, offering costs, incentive fees, listing fees, acquisition fees, disposition fees, or leasing commissions during the three and six months endedJune 30, 2013 or the three and six months endedJune 30, 2012.

Due to Affiliates

The detail of amounts due to WREF and its affiliates as of June 30, 2013 and December 31, 2012 (in thousands) are provided below:

	June 30, 2013		December 31, 2012
Consulting fees	$	15,250	$	—
Transition services	2,750		—
Administrative reimbursements	6		1,360
Asset and property management fees	—		560
Total	$	18,006	$	1,920

Page 21

9. Discontinued Operations

The historical operating results and gains from the disposition of certain assets, including assets "held for sale" and operating properties sold, are required to be reflected in a separate section ("discontinued operations") in the consolidated statements of operations for all periods presented. As a result, the revenues and expenses of Dvintsev Business Center - Tower B (see Note 3, Real Estate and Other Transactions); the properties included in the portfolio disposition that closed in December 2012 (the "Nine Property Sale"), consisting of the One West Fourth Street, 180 E 100 South, Baldwin Point, Tampa Commons, Lakepointe 5, Lakepointe 3, 11950 Corporate Boulevard, Edgewater Corporate Center, and 2000 Park Lane properties, which closed for $260.5 million, resulting in a net gain of $3.2 million; and 5995 Opus Parkway and Emerald Point, which closed in January 2012 for $60.1 million, resulting in total gains of $16.9 million, are included in income from discontinued operations in the accompanying consolidated statements of operations for all periods presented.

The following table shows the revenues and expenses of the above-described discontinued operations (in thousands):

	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenues:
Rental income	$	2		$	8,983		$	1,309		$	19,372
Tenant reimbursements	7			505			184			1,419
	9			9,488			1,493			20,791
Expenses:
Property operating costs	7			3,131			184			6,613
Asset and property management fees	—			674			223			1,373
Depreciation	—			2,250			375			4,490
Amortization	—			1,208			37			2,545
General and administrative	(119		)	(837		)	828			(351		)
Total expenses	(112		)	6,426			1,647			14,670
Real estate operating income (loss)	121			3,062			(154		)	6,121
Other income (expense):
Interest expense	—			(568		)	—			(1,143		)
Interest and other income	—			—			3			—
Operating income (loss) from discontinued operations	121			2,494			(151		)	4,978
Gain on disposition of discontinued operations	—			62			10,014			16,947
Income from discontinued operations	$	121		$	2,556		$	9,863		$	21,925

10.     Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries

The 2018 Bonds Payable (see Note 5, Bonds Payable) are guaranteed by Columbia Property Trust and certain direct and indirect subsidiaries of each of Columbia Property Trust and Columbia Property Trust OP. Columbia Property Trust Advisory Services and Columbia Property Trust Services, were added to the non-guarantor grouping upon acquisition in February 2013. In March 2013, as a result of closing of the Nine Property Sale, Columbia Property Trust added four subsidiaries as guarantors to the $450.0 Million Term Loan, the JPMorgan Chase Credit Facility, and the 2018 Bonds Payable, which resulted in the reclassification of prior-period amounts between the guarantor and non-guarantor groupings within the condensed consolidating financial statements to conform with the current period presentation. In accordance with SEC Rule 3-10(d), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP) and Subsidiary Guarantors, as defined in the bond indenture, because all of the following criteria are met:

(1) The subsidiary issuer (Columbia Property Trust OP) and all Subsidiary Guarantors are 100% owned by the parent company guarantor (Columbia Property Trust);

(2) The guarantees are full and unconditional; and

(3) The guarantees are joint and several.

Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of June 30, 2013

Page 22

and December 31, 2012 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three and six months ended June 30, 2013 and 2012 (in thousands); and its condensed consolidating statements of cash flows for the six months ended June 30, 2013 and 2012 (in thousands).

Condensed Consolidating Balance Sheets (in thousands)

	As of June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	270,261	$	509,834	$	—		$	786,336
Buildings and improvements, net	—		23,275		1,782,978		1,563,899		—			3,370,152
Intangible lease assets, net	—		—		134,093		183,139		—			317,232
Construction in progress	—		713		3,725		2,343		—			6,781
Total real estate assets	—		30,229		2,191,057		2,259,215		—			4,480,501
Cash and cash equivalents	21,945		3,486		20,295		15,941		—			61,667
Investment in subsidiaries	2,931,767		2,638,923		—		—		(5,570,690		)	—
Tenant receivables, net of allowance	—		28		80,511		63,213		(4,279		)	139,473
Prepaid expenses and other assets	178,711		151,742		2,406		25,011		(324,662		)	33,208
Deferred financing costs, net	—		7,145		—		1,807		—			8,952
Intangible lease origination costs, net	—		—		117,184		69,802		—			186,986
Deferred lease costs, net	—		55		63,159		43,438		—			106,652
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439
Liabilities:
Line of credit and notes payable	$	—	$	501,000	$	145,045	$	1,086,145	$	(322,945	)	$	1,409,245
Bonds payable, net	—		248,804		—		—		—			248,804
Accounts payable, accrued expenses, and accrued capital expenditures	2,078		9,691		39,915		50,524		(4,279		)	97,929
Due to affiliates	—		18,029		1,598		96		(1,717		)	18,006
Deferred income	—		—		10,202		12,041		—			22,243
Intangible lease liabilities, net	—		—		40,923		49,944		—			90,867
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	2,078		777,524		703,683		1,318,750		(328,941		)	2,473,094
Redeemable Common Stock	121,752		—		—		—		—			121,752
Equity:
Total equity	3,008,593		2,054,084		2,236,929		1,279,677		(5,570,690		)	3,008,593
Total liabilities, redeemable common stock, and equity	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439

Page 23

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2012
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	271,757	$	511,239	$	—		$	789,237
Building and improvements, net	—		16,513		1,812,882		1,638,823		—			3,468,218
Intangible lease assets, net	—		—		146,448		195,012		—			341,460
Construction in progress	—		5,252		2,505		4,923		—			12,680
Total real estate assets	—		28,006		2,233,592		2,349,997		—			4,611,595
Cash and cash equivalents	20,914		4,822		13,673		14,248		—			53,657
Investment in subsidiaries	3,068,106		2,679,950		—		—		(5,748,056		)	—
Tenant receivables, net of allowance	—		22		72,283		66,017		(4,223		)	134,099
Prepaid expenses and other assets	178,131		203,589		1,531		26,806		(380,684		)	29,373
Deferred financing costs, net	—		8,498		—		1,992		—			10,490
Intangible lease origination costs, net	—		—		129,947		76,980		—			206,927
Deferred lease costs, net	—		68		54,900		43,840		—			98,808
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949
Liabilities:
Lines of credit and notes payable	$	—	$	492,000	$	145,974	$	1,142,644	$	(379,000	)	$	1,401,618
Bonds payable, net	—		248,678		—		—		—			248,678
Accounts payable, accrued expenses, and accrued capital expenditures	3,645		12,417		39,834		51,185		(4,223		)	102,858
Due to affiliates	—		960		1,593		1,051		(1,684		)	1,920
Deferred income	—		81		16,748		11,242		—			28,071
Intangible lease liabilities, net	—		—		44,201		54,097		—			98,298
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	3,645		754,136		714,350		1,380,219		(384,907		)	2,467,443
Redeemable Common Stock	99,526		—		—		—		—			99,526
Equity:
Total equity	3,163,980		2,170,819		2,257,576		1,319,661		(5,748,056		)	3,163,980
Total liabilities, redeemable common stock, and equity	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949

Page 24

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	101		$	66,239		$	51,638		$	(1,029	)	$	116,949
Tenant reimbursements	—		(20		)	14,174			10,854			(557		)	24,451
Hotel income	—		—			—			6,562			—			6,562
Other property income	—		—			863			4,200			(3,805		)	1,258
	—		81			81,276			73,254			(5,391		)	149,220
Expenses:
Property operating costs	—		594			21,828			21,500			(792		)	43,130
Hotel operating costs	—		—			—			5,749			(929		)	4,820
Asset and property management fees:
Related-party	—		4			1,104			1,254			(2,362		)	—
Other	—		—			10			670			—			680
Depreciation	—		328			16,211			14,069			—			30,608
Amortization	—		7			12,856			9,464			—			22,327
Impairment loss on real estate assets	—		—			—			—			—			—
General and administrative	—		4,046			226			6,153			(1,312		)	9,113
	—		4,979			52,235			58,859			(5,395		)	110,678
Real estate operating (loss) income	—		(4,898		)	29,041			14,395			4			38,542
Other income (expense):
Interest expense	—		(8,148		)	(10,029		)	(13,721		)	4,723			(27,175		)
Interest and other income (expense)	2,002		2,723			7,309			1,963			(4,723		)	9,274
Gain on interest rate swaps	—		—			—			164			—			164
Income (loss) from equity investment	18,599		26,693			—			—			(45,292		)	—
	20,601		21,268			(2,720		)	(11,594		)	(45,292		)	(17,737		)
Income (loss) before income tax benefit (expense)	20,601		16,370			26,321			2,801			(45,288		)	20,805
Income tax benefit (expense)	—		(1		)	(62		)	(262		)	—			(325		)
Income (loss) from continuing operations	20,601		16,369			26,259			2,539			(45,288		)	20,480
Discontinued operations:
Operating income from discontinued operations	—		—			(24		)	145			—			121
Gain on disposition of discontinued operations	—		—			—			—			—			—
Income from discontinued operations	—		—			(24		)	145			—			121
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369		$	26,235		$	2,684		$	(45,288	)	$	20,601

Page 25

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	90		$	56,466		$	54,111		$	(810	)	$	109,857
Tenant reimbursements	—			51			9,672			15,814			(1,344		)	24,193
Hotel income	—			—			—			6,463			—			6,463
Other property income	—			38			201			417			(198		)	458
	—			179			66,339			76,805			(2,352		)	140,971
Expenses:
Property operating costs	—			464			16,084			24,979			(1,504		)	40,023
Hotel operating costs	—			—			—			5,806			(810		)	4,996
Asset and property management fees:
Related-party	7,569			4			421			717			(40		)	8,671
Other	—			—			394			257			—			651
Depreciation	—			177			13,201			14,604			—			27,982
Amortization	—			6			13,943			12,802			—			26,751
General and administrative	—			4,559			1,611			442			2			6,614
	7,569			5,210			45,654			59,607			(2,352		)	115,688
Real estate operating income (loss)	(7,569		)	(5,031		)	20,685			17,198			—			25,283
Other income (expense):
Interest expense	—			(8,084		)	(10,064		)	(13,134		)	4,756			(26,526		)
Interest and other income (expense)	1,997			2,759			7,307			2,705			(4,756		)	10,012
Loss on interest rate swaps	—			—			—			(13		)	—			(13		)
Income (loss) from equity investment	16,486			23,306			—			—			(39,792		)	—
	18,483			17,981			(2,757		)	(10,442		)	(39,792		)	(16,527		)
Income (loss) before income tax benefit (expense)	10,914			12,950			17,928			6,756			(39,792		)	8,756
Income tax benefit (expense)	—			(3		)	(51		)	(344		)	—			(398		)
Income (loss) from continuing operations	10,914			12,947			17,877			6,412			(39,792		)	8,358
Discontinued operations:
Operating loss from discontinued operations	—			1,708			578			208			—			2,494
Gain on disposition of discontinued operations	—			—			—			62			—			62
Income from discontinued operations	—			1,708			578			270			—			2,556
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455		$	6,682		$	(39,792	)	$	10,914

Page 26

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	202		$	130,852		$	103,059		$	(2,043	)	$	232,070
Tenant reimbursements	—			83			29,135			21,900			(1,235		)	49,883
Hotel income	—			—			—			11,516			—			11,516
Other property income	—			17			863			5,881			(5,215		)	1,546
	—			302			160,850			142,356			(8,493		)	295,015
Expenses:
Property operating costs	—			1,069			44,284			43,139			(1,650		)	86,842
Hotel operating costs	—			—			—			10,941			(1,860		)	9,081
Asset and property management fees:
Related-party	5,018			7			1,927			2,232			(3,643		)	5,541
Other	—			—			272			1,108			—			1,380
Depreciation	—			561			32,343			27,956			—			60,860
Amortization	—			14			25,638			18,585			—			44,237
Impairment loss on real estate asset	—			—			5,159			11,708			—			16,867
General and administrative	—			37,751			1,163			8,943			(1,837		)	46,020
	5,018			39,402			110,786			124,612			(8,990		)	270,828
Real estate operating income (loss)	(5,018		)	(39,100		)	50,064			17,744			497			24,187
Other income (expense):
Interest expense	—			(16,325		)	(20,067		)	(27,494		)	9,451			(54,435		)
Interest and other income (expense)	3,999			5,455			14,616			3,766			(9,451		)	18,385
Loss on interest rate swaps	—			—			—			221			—			221
Income (loss) from equity investment	(988		)	44,994			—			—			(44,006		)	—
	3,011			34,124			(5,451		)	(23,507		)	(44,006		)	(35,829		)
Income (loss) before income tax expense	(2,007		)	(4,976		)	44,613			(5,763		)	(43,509		)	(11,642		)
Income tax expense	—			(2		)	(124		)	(102		)	—			(228		)
Income (loss) from continuing operations	(2,007		)	(4,978		)	44,489			(5,865		)	(43,509		)	(11,870		)
Discontinued operations:
Operating loss from discontinued operations	—			658			(5		)	(804		)	—			(151		)
Gain on disposition of discontinued operations	—			—			—			10,014			—			10,014
Income from discontinued operations	—			658			(5		)	9,210			—			9,863
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484		$	3,345		$	(43,509	)	$	(2,007	)

Page 27

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	1,450		$	111,999		$	108,154		$	(1,560	)	$	220,043
Tenant reimbursements	—			66			19,349			31,202			(1,344		)	49,273
Hotel income	—			—			—			10,838			—			10,838
Other property income	—			76			403			2,021			(343		)	2,157
	—			1,592			131,751			152,215			(3,247		)	282,311
Expenses:
Property operating costs	—			1,006			31,859			50,007			(1,611		)	81,261
Hotel operating costs	—			—			—			10,653			(1,560		)	9,093
Asset and property management fees:
Related-party	15,125			47			851			1,546			(76		)	17,493
Other	—			—			813			537			—			1,350
Depreciation	—			350			26,326			29,191			—			55,867
Amortization	—			344			25,936			26,190			—			52,470
General and administrative	—			8,914			1,800			770			—			11,484
	15,125			10,661			87,585			118,894			(3,247		)	229,018
Real estate operating income (loss)	(15,125		)	(9,069		)	44,166			33,321			—			53,293
Other income (expense):
Interest expense	—			(15,887		)	(20,136		)	(26,301		)	9,517			(52,807		)
Interest and other income (expense)	3,994			5,526			14,615			5,410			(9,517		)	20,028
Loss on interest rate swaps	—			—			—			(89		)	—			(89		)
Income (loss) from equity investment	53,176			66,971			—			—			(120,147		)	—
	57,170			56,610			(5,521		)	(20,980		)	(120,147		)	(32,868		)
Income (loss) before income tax benefit (expense)	42,045			47,541			38,645			12,341			(120,147		)	20,425
Income tax benefit (expense)	—			(14		)	(101		)	(186		)	—			(301		)
Income (loss) from continuing operations	42,045			47,527			38,544			12,155			(120,147		)	20,124
Discontinued operations:
Operating loss from discontinued operations	—			3,407			1,242			329			—			4,978
Gain on disposition of discontinued operations	—			—			—			16,947			—			16,947
Income from discontinued operations	—			3,407			1,242			17,276			—			21,925
Net income (loss)	42,045			50,934			39,786			29,431			(120,147		)	42,049
Less: Net loss (income) attributable to noncontrolling interest	—			—			—			(4		)	—			(4		)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786		$	29,427		$	(120,147	)	$	42,045

Page 28

Consolidating Statements of Comprehensive Income (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369	$	26,235	$	2,684	$	(45,288	)	$	20,601
Market value adjustment to interest rate swap	2,168		2,168		—		—		(2,168		)	2,168
Comprehensive income (loss)	$	22,769	$	18,537	$	26,235	$	2,684	$	(47,456	)	$	22,769

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455	$	6,682	$	(39,792	)	$	10,914
Market value adjustment to interest rate swap	(4,016		)	(4,016		)	—		—		4,016			(4,016		)
Comprehensive income (loss)	$	6,898		$	10,639		$	18,455	$	6,682	$	(35,776	)	$	6,898

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484	$	3,345		$	(43,509	)	$	(2,007	)
Foreign currency translation adjustment	(83		)	—			—		(83		)	83			(83		)
Market value adjustment to interest rate swap	2,717			2,717			—		—			(2,717		)	2,717
Comprehensive income (loss)	$	627		$	(1,603	)	$	44,484	$	3,262		$	(46,143	)	$	627

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786	$	29,427	$	(120,147	)	$	42,045
Market value adjustment to interest rate swap	(3,408		)	(3,408		)	—		—		3,408			(3,408		)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	38,637			47,526			39,786		29,427		(116,739		)	38,637
Comprehensive income attributable to noncontrolling interests	—			—			—		4		—			4
Comprehensive income (loss)	$	38,637		$	47,526		$	39,786	$	29,431	$	(116,739	)	$	38,641

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Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(41,902	)	$	96,132		$	48,091		$	102,321
Cash flows from investing activities:
Net proceeds from sale of real estate	—			65,928			—			—			65,928
Investment in real estate and related assets	—			(3,355		)	(12,007		)	(16,949		)	(32,311		)
Net cash provided by (used in) investing activities	—			62,573			(12,007		)	(16,949		)	33,617
Cash flows from financing activities:
Borrowings, net of fees	—			119,801			—			(41		)	119,760
Repayments	—			(111,000		)	—			(1,227		)	(112,227		)
Issuance of common stock, net of redemptions and fees	(32,328		)	—			—			—			(32,328		)
Distributions	(103,030		)	—			—			—			(103,030		)
Intercompany transfers, net	136,389			(30,808		)	(77,503		)	(28,078		)	—
Net cash provided by (used in) financing activities	1,031			(22,007		)	(77,503		)	(29,346		)	(127,825		)
Net increase (decrease) in cash and cash equivalents	1,031			(1,336		)	6,622			1,796			8,113
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(103		)	(103		)
Cash and cash equivalents, beginning of period	20,914			4,822			13,673			14,248			53,657
Cash and cash equivalents, end of period	$	21,945		$	3,486		$	20,295		$	15,941		$	61,667

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Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(40,251	)	$	111,220		$	62,679		$	133,648
Cash flows from investing activities:
Net proceeds from sale of real estate	—			57,747			—			—			57,747
Investment in real estate and related assets	—			(883		)	(12,369		)	(17,026		)	(30,278		)
Net cash provided by (used in) investing activities	—			56,864			(12,369		)	(17,026		)	27,469
Cash flows from financing activities:
Borrowings, net of fees	—			475,888			—			—			475,888
Repayments	—			(456,000		)	—			(34,998		)	(490,998		)
Issuance of common stock, net of redemptions and fees	11,466			—			—			—			11,466
Distributions	(135,984		)	—			—			(15		)	(135,999		)
Intercompany transfers	149,143			(42,623		)	(100,564		)	(5,956		)	—
Redemption of noncontrolling interest	—			—			—			(301		)	(301		)
Net cash provided by (used in) financing activities	24,625			(22,735		)	(100,564		)	(41,270		)	(139,944		)
Net increase (decrease) in cash and cash equivalents	24,625			(6,122		)	(1,713		)	4,383			21,173
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(23		)	(23		)
Cash and cash equivalents, beginning of period	11,291			10,597			9,134			8,446			39,468
Cash and cash equivalents, end of period	$	35,916		$	4,475		$	7,421		$	12,806		$	60,618

11. Subsequent Event

Columbia Property Trust has evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and noted the following items in addition to those disclosed elsewhere in this report:

Listing Preparations

In preparation for a potential listing, the DRP was suspended effective July 7, 2013 and the SRP was terminated effective July 31, 2013.

Debt Maturity

On July 31, 2013, Columbia Property Trust used cash on hand and proceeds from the line of credit to fully repay the Three Glenlake Building mortgage note of $26.4 million and the related swap at maturity.

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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 our accompanying consolidated financial statements (and notes thereto) and the "Cautionary Note Regarding Forward-Looking Statements" preceding Part I of this report, as well as our consolidated financial statements (and the notes thereto) 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, 2012.

Overview

We have evaluated various liquidity options and believe that listing our shares on a national exchange will provide the most flexible means by which to maximize our long-term value. In addition to providing an opportunity for our shareholders to monetize their investment, a listing would give the company access to more efficient sources of capital, which can be invested toward long-term value growth and to enhance income to support dividends. We are, therefore, taking steps to position the company to be able to list its shares later this year, should market conditions remain favorable.

Over the past year, we have transitioned from an externally advised management structure to a self-managed team, which culminated on February 28, 2013 upon terminating the advisory agreement and property management agreements, and acquiring Columbia Property Trust Advisory Services and Columbia Property Trust Services, which included the employees necessary to perform the functions previously performed by our external advisor and property manager. See Note 8, Related-Party Transactions and Agreements, to the accompanying consolidated financial statements.

We are continuing to focus on our strategic investment objective of refining our portfolio in an effort to enhance the REIT's value potential and, consequently, its attractiveness to current and future investors. We are seeking to optimize the allocation between our traditional, stabilized core investments, and growth-oriented, core-plus, and value-added investments, which we believe have upside potential for net operating income and value over the intermediate term. We are also working to improve our market concentration by growing our economic presence in key markets through the pursuit of strategic investment opportunities, and by divesting of properties that are situated in outlying markets or face more challenging appreciation prospects. Recently, we initiated a process to market for sale a group of 18 additional properties with an aggregate carrying value of approximately $514 million, the disposition of which would meaningfully improve our geographical concentration and strengthen the underlying real estate fundamentals of our portfolio.

Liquidity and Capital Resources

Overview

In 2012 and 2013, we actively managed our real estate portfolio with an emphasis on leasing and re-leasing space, and pursuing and closing on strategic acquisitions and dispositions to concentrate our market focus. During this period, we also enhanced our capital structure by raising net equity proceeds through our DRP, improving the composition, maturities and capacity of our debt portfolio while lowering our overall borrowing costs, accessing new sources of capital, and identifying additional sources of future capital.

In determining how and when to allocate cash resources, we initially consider the source of the cash. We reserve a portion of operating cash flows to fund capital expenditures for our existing portfolio. The amount of distributions that we pay to our common stockholders based on our operations is determined by our board of directors and is dependent upon a number of factors, including the funds available for distribution to common stockholders based on our operations, our financial condition, our capital expenditure requirements, our expectations of future sources of liquidity, and the annual distribution requirements necessary to maintain our status as a REIT under the Code. We have used cash on hand and DRP proceeds to fund share redemptions (subject to the limitations of our former share redemption program).

Short-term Liquidity and Capital Resources

During the six months ended June 30, 2013, we generated net cash flows from operating activities of $102.3 million, which consists primarily of receipts from tenants for rent and reimbursements, reduced by payments for operating costs, administrative expenses, and interest expense. During the same period, we paid total distributions to stockholders of $103.0 million, which includes $46.4 million reinvested in our common stock pursuant to our DRP. In the event that distributions exceed current-period and prior-period accumulated operating cash flow, borrowings may be used to pay stockholder distributions. We expect to use the majority of our future net cash flow from operating activities to fund distributions to stockholders and capital improvements to our existing assets.

During the six months ended June 30, 2013, we sold the Dvintsev Business Center - Tower B for net proceeds of $65.9 million and generated net proceeds from the sale of common stock under our DRP of $46.4 million. We used these proceeds, along with

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cash on hand, to fund share redemptions of $78.6 million, capital expenditures of $32.3 million, and net debt repayments of $7.8 million.

We believe that we have adequate liquidity and capital resources to meet our current obligations as they come due. As of July 31, 2013, we had access to the borrowing capacity under the JPMorgan Chase Credit Facility of $394.0 million. Further, we are taking steps to prepare the company to list its shares on a national exchange should market conditions remain favorable. We believe that listing our shares would give us access to additional and more efficient sources of capital in the future.

Long-term Liquidity and Capital Resources

Over the long term, we expect that our primary sources of capital will include operating cash flows, proceeds from secured or unsecured borrowings from third-party lenders, and, if and when deemed appropriate, proceeds from strategic property sales. We expect that our primary uses of capital will continue to include stockholder distributions; capital expenditures, such as building improvements, tenant improvements, and leasing costs; repaying or refinancing debt; and selective property acquisitions, either directly or through investments in joint ventures.

Consistent with our financing objectives and operational strategy, we continue to maintain low debt levels, historically less than 40% of the cost of our assets. This conservative leverage goal could reduce the amount of current income we can generate for our stockholders, but it also reduces their risk of loss. We believe that preserving investor capital while generating stable current income is in the best interest of our stockholders. Our debt-to-real-estate-asset ratio is calculated using the outstanding debt balance and real estate at cost. As of June 30, 2013, our debt-to-real-estate-asset ratio was approximately 29.1%.

Our board of directors elected to maintain the distribution rate of $0.095 for the second quarter of 2013. We are continuing to monitor our cash flows and market conditions and to assess their impact on our future earnings and distribution decisions.

Debt Covenants

Our portfolio debt instruments, the $450 Million Term Loan, the JPMorgan Chase Credit Facility, and the unsecured senior notes, contain certain covenants and restrictions that require us to meet certain financial ratios, including the following key financial covenants and respective covenant levels as of June 30, 2013:

	Covenant Level	Actual Performance June 30, 2013
JP Morgan Chase Credit Facility and $450 Million Term Loan:
Total debt to total asset value ratio	Less than 50%	33	%
Secured debt to total asset value ratio	Less than 40%	19	%
Fixed charge coverage ratio	Greater than 1.75x	4.26x
Unencumbered interest coverage ratio	Greater than 2.0x	6.48x
Unencumbered asset coverage ratio	Greater than 2.0x	3.47x
Unsecured Senior Notes due 2018:
Aggregate debt test	Less than 60%	28	%
Debt service test	Greater than 1.5x	3.85x
Secured debt test	Less than 40%	15	%
Maintenance of total unencumbered assets	Greater than 150%	550	%

We were in compliance with all of our debt covenants as of June 30, 2013. Currently, we expect to continue to meet the requirements of our debt covenants over the short and long term.

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Contractual Commitments and Contingencies

As of June 30, 2013, our contractual obligations will become payable in the following periods (in thousands):

Contractual Obligations	Total		2013		2014-2015		2016-2017		Thereafter
Debt obligations	$	1,657,999	$	27,687	$	362,035	$	670,102	$	598,175
Interest obligations on debt(1)	349,180		36,401		133,989		82,579		96,211
Capital lease obligations(2)	586,000		466,000		—		—		120,000
Operating lease obligations	219,912		1,279		5,114		5,259		208,260
Total	$	2,813,091	$	531,367	$	501,138	$	757,940	$	1,022,646

⁽¹⁾  Interest obligations on variable-rate debt are measured at the rate at which they are effectively fixed with interest rate swap agreements (where applicable), a portion of which is reflected as gain (loss) on interest rate swaps in our accompanying consolidated statements of operations. Interest obligations on all other debt are measured at the contractual rate. See Item 3, Quantitative and Qualitative Disclosure About Market Risk, for more information regarding our interest rate swaps.

⁽²⁾  Amounts include principal obligations only. We made interest payments on these obligations of $18.2 million during the six months ended June 30, 2013, all of which was funded with interest income earned on the corresponding investments in development authority bonds. These obligations will be fully satisfied at maturity with equivalent investments in development authority bonds.

Results of Operations

Overview

As of June 30, 2013, we owned controlling interests in 60 office properties, which were approximately 93.0% leased, and one hotel. Our real estate operating results have decreased for the six months ended June 30, 2013, as compared to the same periods in 2012, primarily due to fees payable to WREF incurred in the first quarter of 2013, included in general and administrative expense in our accompanying statement of operations, and impairment losses recorded in the first quarter of 2013. In the near term, absent future acquisitions or dispositions, we expect future real estate operating income to fluctuate primarily based on leasing activities for our portfolio.

Comparison of the three months ended June 30, 2013 versus the three months ended June 30, 2012

Rental income was $116.9 million for the three months ended June 30, 2013, which represents an increase as compared to $109.9 million for the three months ended June 30, 2012, primarily due to the acquisition of the 333 Market Street Building in December 2012 and the impact of 2012 leasing activity. Absent changes to our portfolio or the leases currently in place at our properties, future rental income is expected to remain at similar levels in the near term.

Tenant reimbursements remained stable at $24.5 million for the three months ended June 30, 2013, as compared to $24.2 million for the three months ended June 30, 2012. Property operating costs, however, increased to $43.1 million for the three months ended June 30, 2013, as compared to $40.0 million for the three months ended June 30, 2012, primarily due to increases in property taxes, resulting from annual reassessments and association dues, and construction work related to a prospective tenant. Tenant reimbursements of the additional 2013 property operating costs were neutralized by the impact of concessions offered with new and modified leases. Absent changes to our portfolio, over the near term, tenant reimbursements and property operating costs are expected to fluctuate in a similar manner based on leasing activities.

Hotel income, net of hotel operating costs, was $1.7 million for the three months ended June 30, 2013, which represents an increase as compared to $1.5 million for the three months ended June 30, 2012, due to increased room rates. Hotel income and hotel operating costs are primarily driven by the local economic conditions and, as a result, are expected to fluctuate in the future primarily based on changes in the supply of, and demand for, hotel and banquet space in Cleveland, Ohio, similar to that offered by the Key Center Marriott hotel.

Other property income was $1.3 million for the three months ended June 30, 2013, which represents an increase as compared to $0.5 million for the three months ended June 30, 2012, primarily due to fees earned in connection with lease restructuring activities during second quarter of 2013. Future other property income fluctuations are expected to primarily relate to future lease restructuring and termination activities.

Asset and property management fees were $0.7 million for the three months ended June 30, 2013, which represents a decrease as compared to $9.3 million for the three months ended June 30, 2012, due to terminating the Advisory Agreement effective

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February 28, 2013 as further discussed in Note 8, Related-Party Transactions and Agreements. Thus, going forward, no related-party asset management fees will be incurred, as such services will be performed by employees of Columbia Property Trust.

Depreciation was $30.6 million for the three months ended June 30, 2013, which represents an increase as compared to $28.0 million for the three months ended June 30, 2012, primarily due to the acquisition of the 333 Market Street building in December 2012. Excluding the impact of acquisitions, dispositions, and changes to the leases currently in place at our properties, depreciation is expected to continue to increase in future periods, as compared to historical periods, due to ongoing capital improvements to our properties.

Amortization was $22.3 million for the three months ended June 30, 2013, which represents a decrease as compared to $26.8 million for the three months ended June 30, 2012, primarily due to a lease termination, a lease extension, and the expiration of in-place leases at our properties in 2012 and 2013, partially offset by the acquisition of 333 Market Street in December 2012. Future amortization is expected to fluctuate, primarily based on the expiration of additional in-place leases, offset by amortization of deferred lease costs incurred in connection with recent leasing activity and in-place leases at acquired properties.

General and administrative expenses were $9.1 million for the three months ended June 30, 2013, which represents an increase as compared to $6.6 million for the three months ended June 30, 2012, primarily due to expenses incurred in connection with transitioning to a self-managed platform. Quarterly general and administrative expenses are expected to increase in the near term due to non-recurring expenses related to our listing preparations.

Interest expense was $27.2 million for the three months ended June 30, 2013, which represents a slight increase as compared to $26.5 million for the three months ended June 30, 2012, primarily due to the 333 Market Street Building mortgage note assumed at acquisition in December 2012, partially offset by lowering our weighted-average cost of borrowing upon executing the $450 Million Term Loan and the settlement of the development authority bonds and the related obligation under capital lease related to One Glenlake Parkway Building in December 2012. Absent acquisition activity, interest expense is expected to remain at comparable levels in the near term, and decrease over the longer term, as $466.0 million of our $586.0 million total capital lease obligations mature in December 2013.

Interest and other income was $9.3 million for the three months ended June 30, 2013, which represents a slight decrease as compared to $10.0 million for the three months ended June 30, 2012, due to the settlement of the development authority bonds and the related obligation under capital lease related to One Glenlake Parkway Building in December 2012. Interest income is expected to remain at comparable levels in the near term, as the majority of this activity consists of interest income earned on investments in development authority bonds with a weighted-average remaining term of approximately 2.4 years as of June 30, 2013, and decrease significantly over the longer term, as $466.0 million of our $586.0 million total development authority bonds mature in December 2013. Interest income earned on investments in development authority bonds is entirely offset by interest expense incurred on the corresponding capital leases.

We recognized a gain (loss) on interest rate swaps that do not qualify for hedge accounting treatment of approximately $164,000 for the three months ended June 30, 2013, compared to $(13,000) for the three months ended June 30, 2012. We anticipate future gains and losses on interest rate swaps that do not qualify for hedge accounting treatment will fluctuate, primarily due to changes in the estimated fair value of our interest rate swaps relative to then-current market conditions. Market value adjustments to swaps that qualify for hedge accounting treatment are recorded directly to equity, and therefore do not impact net income.

Income from discontinued operations was approximately $0.1 million for the three months ended June 30, 2013 and $2.6 million for the three months ended June 30, 2012. As further explained in Note 9, Discontinued Operations, to the accompanying consolidated financial statements, properties meeting certain criteria for disposal are classified as "discontinued operations" in the accompanying consolidated statements of operations for all periods presented. For the periods presented, discontinued operations include Dvintsev Business Center - Tower B, which closed in March 2013 for a net gain of $10.0 million; the Nine Property Sale, which closed in December 2012 for a net gain of $3.2 million after recognizing an $18.5 million impairment loss on the 180 E 100 South Building, one of the properties in the Nine Property Sale; and 5995 Opus Parkway and Emerald Point, which both closed in January 2012 for total gains of $16.9 million.

Net income (loss) attributable to Columbia Property Trust was $20.6 million, or $0.04 per share, for the three months ended June 30, 2013, which represents an increase as compared to $10.9 million, or $0.02 per share, for the three months ended June 30, 2012. The increase is primarily due to the transition to in-house management of the majority of our properties, as a result of the acquisition of Columbia Property Trust Services, and lower amortization expense due to expiring and restructuring of in place leases, partially offset by increased expenses resulting from our transition to a self-managed platform, and selling properties in 2012 and early 2013. We expect earnings to fluctuate in the near term based on disposition and acquisition activity. Should the U.S. economic recovery remain sluggish, or the U.S. real estate markets remain depressed for a prolonged period of time, the

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creditworthiness of our tenants and our ability to achieve market rents comparable to the leases currently in place at our properties may suffer and could lead to a decline in net income over the long term.

Comparison of the six months ended June 30, 2013 versus the six months ended June 30, 2012

Rental income was $232.1 million for the six months ended June 30, 2013, which represents an increase as compared to $220.0 million for the six months ended June 30, 2012, primarily due to the acquisition of the 333 Market Street Building in December 2012 and the impact of 2012 leasing activity. Absent changes to our portfolio or the leases currently in place at our properties, future rental income is expected to remain at similar levels in the near term.

Tenant reimbursements remained stable at $49.9 million for the six months ended June 30, 2013, as compared to $49.3 million for the six months ended June 30, 2012. Property operating costs, however, increased to $86.8 million for the six months ended June 30, 2013, as compared to $81.3 million for the six months ended June 30, 2012, primarily due to increases in property taxes, resulting from annual reassessments and increased administrative costs primarily driven by non-capital project initiatives. Tenant reimbursements of the additional 2013 property operating costs were neutralized by the impact of concessions offered with new and modified leases. Absent changes to our portfolio, over the near term, tenant reimbursements and property operating costs are expected to fluctuate in a similar manner based on leasing activities.

Hotel income, net of hotel operating costs, was $2.4 million for the six months ended June 30, 2013, which represents an increase as compared to $1.7 million for the six months ended June 30, 2012, due to stable occupancy rates and increased room rates. Hotel income and hotel operating costs are primarily driven by the local economic conditions and, as a result, are expected to fluctuate in the future primarily based on changes in the supply of, and demand for, hotel and banquet space in Cleveland, Ohio, similar to that offered by the Key Center Marriott hotel.

Other property income was $1.5 million for the six months ended June 30, 2013, which represents a decrease as compared to $2.2 million for the six months ended June 30, 2012, primarily due to fees earned in connection with lease terminations in the first quarter of 2012, offset by fees earned in connection with lease restructuring activities during the second quarter of 2013. Future other property income fluctuations are expected to primarily relate to future lease restructuring and termination activities.

Asset and property management fees were $6.9 million for the six months ended June 30, 2013, which represents a decrease as compared to $18.8 million for the six months ended June 30, 2012, due to terminating the Advisory Agreement effective February 28, 2013 as further discussed in Note 8, Related-Party Transactions and Agreements. Thus, going forward, no related-party asset management fees will be incurred, as such services will be performed by employees of Columbia Property Trust.

Depreciation was $60.9 million for the six months ended June 30, 2013, which represents an increase as compared to $55.9 million for the six months ended June 30, 2012, primarily due to the acquisition of the 333 Market Street building in December 2012. Excluding the impact of acquisitions, dispositions, and changes to the leases currently in place at our properties, depreciation is expected to continue to increase in future periods, as compared to historical periods, due to ongoing capital improvements to our properties.

Amortization was $44.2 million for the six months ended June 30, 2013, which represents a decrease as compared to $52.5 million for the six months ended June 30, 2012, primarily due to a lease termination, lease restructuring, and the expiration of in-place leases at our properties in 2012 and 2013. Future amortization is expected to fluctuate, primarily based on the expiration of additional in-place leases, offset by amortization of deferred lease costs incurred in connection with recent leasing activity and in-place leases at acquired properties.

We recognized an impairment loss of $16.9 million in the first quarter of 2013 to reduce the carrying values of the 120 Eagle Rock and 333 & 777 Republic Drive properties to their estimated fair values in connection with refining our disposition strategy for these assets as a result of initiating a process to market for sale a group of 18 properties. We expect future impairment losses on real estate assets to be dependent upon the nature and timing of future disposition activities.

General and administrative expenses were $46.0 million for the six months ended June 30, 2013, which represents an increase as compared to $11.5 million for the six months ended June 30, 2012, primarily due to the contractual impact of transitioning to a self-managed platform (see Note 8, Related-Party Transactions and Agreements for details). As a result, for the first six months of 2013, general and administrative expenses include all of the fees payable under the Consulting Service Agreement and the Transition Services Agreement, as amended, during 2013. General and administrative expenses are expected to decrease in the near term as we do not expect to incur additional fees under either agreement going forward.  The decrease will be slightly offset by non-recurring fees related to our listing preparations.

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Interest expense was $54.4 million for the six months ended June 30, 2013, which represents a slight increase as compared to $52.8 million for the six months ended June 30, 2012, primarily due to the 333 Market Street Building mortgage note assumed at acquisition in December 2012, partially offset by the settlement of the development authority bonds and the related obligation under capital lease related to One Glenlake Parkway Building in December 2012. Absent acquisition activity, interest expense is expected to remain at comparable levels in the near term, and decrease over the longer term, as $466.0 million of our $586.0 million total capital lease obligations mature in December 2013.

Interest and other income was $18.4 million for the six months ended June 30, 2013, which represents a slight decrease as compared to $20.0 million for the six months ended June 30, 2012, due to the settlement of the development authority bonds and the related obligation under capital lease related to One Glenlake Parkway Building in December 2012. Interest income is expected to remain at comparable levels in the near term, as the majority of this activity consists of interest income earned on investments in development authority bonds with a weighted-average remaining term of approximately 2.4 years as of June 30, 2013, and decrease significantly over the longer term, as $466.0 million of our $586.0 million total development authority bonds mature in December 2013. Interest income earned on investments in development authority bonds is entirely offset by interest expense incurred on the corresponding capital leases.

We recognized a gain (loss) on interest rate swaps that do not qualify for hedge accounting treatment of approximately $0.2 million for the six months ended June 30, 2013, compared to $(0.1) million for the six months ended June 30, 2012. We anticipate future gains and losses on interest rate swaps that do not qualify for hedge accounting treatment will fluctuate, primarily due to changes in the estimated fair value of our interest rate swaps relative to then-current market conditions. Market value adjustments to swaps that qualify for hedge accounting treatment are recorded directly to equity, and therefore do not impact net income.

Income from discontinued operations was approximately $9.9 million for the six months ended June 30, 2013 and $21.9 million for the six months ended June 30, 2012. As further explained in Note 9, Discontinued Operations, to the accompanying consolidated financial statements, properties meeting certain criteria for disposal are classified as "discontinued operations" in the accompanying consolidated statements of operations for all periods presented. For the periods presented, discontinued operations include Dvintsev Business Center - Tower B, which closed in March 2013 for a net gain of $10.0 million; the Nine Property Sale, which closed in December 2012 for a net gain of $3.2 million after recognizing an $18.5 million impairment loss on the 180 E 100 South Building, one of the properties in the Nine Property Sale; and 5995 Opus Parkway and Emerald Point, which both closed in January 2012 for total gains of $16.9 million.

Net income (loss) attributable to Columbia Property Trust was $(2.0) million, or $0.00 per share, for the six months ended June 30, 2013, which represents a decrease as compared to $42.0 million, or $0.08 per share, for the six months ended June 30, 2012. The decrease is primarily due to incurring $28.6 million under the Transition Services Agreement and the Consulting Services Agreement (as described in Note 8, Related-Party Transactions and Agreements, of the accompanying consolidated financial statements), and changes in disposition activity between the periods presented. We expect future earnings to improve due to the nonrecurring transition services and consulting fees incurred during the six months ended June 30, 2013. Should the U.S. economic recovery remain sluggish, or the U.S. real estate markets remain depressed for a prolonged period of time, the creditworthiness of our tenants and our ability to achieve market rents comparable to the leases currently in place at our properties may suffer and could lead to a decline in net income over the long term.

Funds From Operations

Funds from operations (“FFO”) is a non-GAAP measure used by many investors and analysts that follow the real estate industry to measure the performance of an equity REIT. We consider FFO a useful measure of our performance because it principally adjusts for the effects of GAAP depreciation and amortization of real estate assets, which assume that the value of real estate diminishes predictably over time. Since real estate values have historically risen or fallen with market conditions, we believe that FFO provides a meaningful supplemental measure of our performance. We believe that the use of FFO, combined with the required GAAP presentations, is beneficial in improving our investors' understanding of our operating results and allowing for comparisons among other companies who define FFO as we do.

FFO, as defined by the National Association of Real Estate Investment Trusts ("NAREIT"), represents net income (computed in accordance with GAAP), excluding gains (losses) on sales of real estate and impairments of real estate assets, plus real estate-related depreciation and amortization and after adjustments for unconsolidated partnerships and joint ventures. We compute FFO in accordance with NAREIT's definition, which may differ from the methodology for calculating FFO, or similarly titled measures, used by other companies and this may not be comparable to those presentations.

FFO does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations or other commitments and uncertainties, nor is it indicative of funds available to fund the Company's cash needs, including its ability to make distributions. Our presentation of FFO should not be considered as an alternative to net income

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(computed in accordance with GAAP) as an indicator of the Company's financial performance or to cash flow from operating activities (computed in accordance with GAAP) as an indicator of its liquidity.

Reconciliations of net income to FFO (in thousands):

	Three Months Ended June 30,					Six months ended June 30,
	2013		2012			2013			2012
Reconciliation of Net Income to Funds From Operations and Adjusted Funds From Operations:
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	10,914		$	(2,007	)	$	42,045
Adjustments:
Depreciation of real estate assets	30,608		30,232			61,235			60,357
Amortization of lease-related costs	22,327		27,959			44,274			55,015
Impairment loss on real estate assets	—		—			16,867			—
Gain on disposition of discontinued operations	—		(62		)	(10,014		)	(16,947		)
Total Funds From Operations adjustments	52,935		58,129			112,362			98,425
Funds From Operations	$	73,536	$	69,043		$	110,355		$	140,470

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, 2003. To qualify as a REIT, we must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of our adjusted taxable income, as defined in the Code, to our stockholders, computed without regard to the dividends-paid deduction and by excluding our net capital gain. 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 will then 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, unless the Internal Revenue Service grants us relief under certain statutory provisions. Such an event could materially 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 for federal income tax purposes.

Columbia Property Trust TRS, Columbia KCP TRS, and Wells Energy TRS are wholly owned subsidiaries of Columbia Property Trust and are organized as Delaware limited liability companies and include the operations of, among other things, a full-service hotel. We have elected to treat the TRS Entities as taxable REIT subsidiaries. We may perform certain additional, noncustomary services for tenants of our buildings through the the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for us to continue to qualify as a REIT, we must limit our investments in taxable REIT subsidiaries to 25% of the value of our total assets. Deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted rates expected to be in effect when the temporary differences reverse.

No provisions for federal income taxes have been made in our accompanying consolidated financial statements, other than the provisions relating to Columbia Property Trust TRS, Columbia KCP TRS, and Wells Energy TRS, as we made distributions in excess of taxable income for the periods presented. We are subject to certain state and local taxes related to property operations in certain locations, which have been provided for in our accompanying consolidated financial statements.

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 a certain per-square-foot allowance. However, due to the long-term nature of the leases, the leases may not reset frequently enough to fully cover inflation.

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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 the comparability of our results of operations to those of companies in similar businesses.

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. The estimated useful lives of our assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Site improvements	15 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of 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 of 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 that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, we assess the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, we adjust the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognize an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of our assets may be carried at more than an amount that could be realized in a current disposition transaction.

Projections of expected future operating 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 discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of our real estate assets and related intangible assets and net income (loss).

In connection with furthering our portfolio repositioning efforts, in the first quarter of 2013, we began to market for sale a group of 18 properties. Pursuant to the accounting policy outlined above, we evaluated the recoverability of the carrying values of each of the properties in this group and determined that the 120 Eagle Rock property in East Hanover, New Jersey and the 333 & 777 Republic Drive property in Allen Park, Michigan are no longer recoverable due to shortening the respective expected property holding periods in connection with these repositioning efforts. As a result, we reduced the carrying value of the 120 Eagle Rock property and the 333 & 777 Republic Drive property to reflect their respective fair values estimated based on projected discounted future cash flows and recorded corresponding property impairment losses of $11.7 million and $5.2 million, respectively, in the first quarter of 2013.

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The fair value measurements used in this evaluation of nonfinancial assets are considered to be Level 3 valuations within the fair value hierarchy outlined above, as there are significant unobservable inputs. Examples of inputs that were utilized in the fair value calculations include estimated holding periods, discount rates, market capitalization rates, expected lease rental rates, and potential sales prices. The table below represents the detail of the adjustments recognized for the six months endedJune 30, 2013 (in thousands) using Level 3 inputs. There were no adjustments recognized in the six months endedJune 30, 2012.

Property	Net Book Value		Impairment Loss Recognized			Fair Value
120 Eagle Rock	$	23,808	$	(11,708	)	$	12,100
333 & 777 Republic Drive	$	13,359	$	(5,159	)	$	8,200

Assets Held for Sale

We classify assets as held for sale according to ASC 360. According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of June 30, 2013, none of our properties met the criteria to be classified as held for sale in the accompanying balance sheet.

Allocation of Purchase Price of Acquired Assets

Upon the acquisition of real properties, we allocate the purchase price of properties to tangible assets, consisting of land and building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on our estimate of their fair values.

The fair values of the tangible assets of an acquired property (which includes land and building) 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 our determination of the relative fair value of these assets. We determine the as-if-vacant fair value of a property using methods similar to those used by independent appraisers. Factors we consider in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases, including leasing commissions and other related costs. In estimating carrying costs, we include real estate taxes, insurance, and other operating expenses during the expected lease-up periods based on current market demand.

Intangible Assets and Liabilities Arising from In-Place Leases where We are the Lessor

As further described below, in-place leases where we are the lessor may have values related to direct costs associated with obtaining a new tenant, opportunity costs associated with lost rentals that are avoided by acquiring an in-place lease, tenant relationships, and effective contractual rental rates that are above or below market rates:

• Direct costs associated with obtaining a new tenant, including commissions, tenant improvements, and other direct costs, are estimated based on management's consideration of current market costs to execute a similar lease. Such direct costs are included in intangible lease origination 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 associated with lost rentals avoided by acquiring an in-place lease is calculated based on the contractual amounts to be paid pursuant to the in-place leases over a market absorption period for a similar lease. Such opportunity costs 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.

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• The value of tenant relationships is calculated based on expected renewal of a lease or the likelihood of obtaining a particular tenant for other locations. Values associated with tenant relationships 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.

• The value of effective rental rates of in-place leases that are above or below the market rates of comparable leases is calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be received pursuant to the in-place leases and (ii) management's estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining terms of the 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.

Evaluating the Recoverability of Intangible Assets and Liabilities

The values of intangible lease assets and liabilities are determined based on assumptions made at the time of acquisition and have defined useful lives, which correspond with the lease terms. There may be instances in which intangible lease assets and liabilities become impaired and we are required to write-off the remaining asset or liability immediately or over a shorter period of time. Lease restructurings, including lease terminations and lease extensions, may impact the value and useful life of in-place leases. In-place leases that are terminated, partially terminated, or modified will be evaluated for impairment if the original in-place lease terms have been modified. In the event that the discounted cash flows of the original in-place lease stream do not exceed the discounted modified in-place lease stream, we adjust the carrying value of the intangible lease assets to the discounted cash flows and recognize an impairment loss. For in-place lease extensions that are executed more than one year prior to the original in-place lease expiration date, the useful life of the in-place lease will be extended over the new lease term with the exception of those in-place lease components, such as lease commissions and tenant allowances, which have been renegotiated for the extended term. Renegotiated in-place lease components, such as lease commissions and tenant allowances, will be amortized over the shorter of the useful life of the asset or the new lease term.

Intangible Assets and Liabilities Arising from In-Place Leases where We are the Lessee

In-place ground leases where we are the lessee may have value associated with effective contractual rental rates that are above or below market rates. Such values are calculated based on the present value (using a discount 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 lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities or assets and amortized as an adjustment to property operating cost over the remaining term of the respective leases.

Related Parties Transactions and Agreements

During the periods presented, we were party to agreements with our former advisor, and its affiliates, whereby we incurred and paid fees and reimbursements for certain advisory services and property management services. On February 28, 2013, we terminated the related agreements and acquired Columbia Property Trust Advisory Services and Columbia Property Trust Services, including the employees necessary to perform the corporate and property management functions previously performed by our former advisor and property manager. See Note 8, Related-Party Transition and Agreements, of our accompanying consolidated financial statements for details of our related-party transactions, agreements, and fees.

Commitments and Contingencies

We are subject to certain commitments and contingencies with regard to certain transactions. Refer to Note 6, Commitments and Contingencies, of our accompanying consolidated financial statements for further explanation. Examples of such commitments and contingencies include:

• obligations under operating leases;

• obligations under capital leases;

• commitments under existing lease agreements; and

• litigation.

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Subsequent Events

We have evaluated subsequent events in connection with the preparation of our consolidated financial statements and notes thereto included in this report on Form 10-Q and noted the following items in addition to those disclosed elsewhere in this report:

Listing Preparations

In preparation for a potential listing, the DRP was suspended effective July 7, 2013 and the SRP was terminated effective July 31, 2013.

Debt Maturity

On July 31, 2013, we used cash on hand and proceeds from the line of credit to fully repay the Three Glenlake Building mortgage note of $26.4 million and the related swap at maturity.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a result of our debt facilities, we are exposed to interest rate changes. 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. However, we currently have a substantial amount of debt outstanding. We manage our ratio of fixed- to floating-rate debt with the objective of achieving a mix that we believe is appropriate in light of anticipated changes in interest rates. We closely monitor interest rates and will continue to consider the sources and terms of our borrowing facilities to determine whether we have appropriately guarded ourselves against the risk of increasing interest rates in future periods.

Additionally, we have entered into interest rate swaps, and may enter into other interest rate swaps, caps, or other arrangements to mitigate our interest rate risk on a related financial instrument. We do not enter into derivative or interest rate transactions for speculative purposes; however, certain of our derivatives may not qualify for hedge accounting treatment. All of our debt was entered into for other-than-trading purposes.

Our financial instruments consist of both fixed-rate and variable-rate debt. Our variable-rate borrowings consist of the JPMorgan Chase Credit Facility, the $450 Million Term Loan, the 333 Market Street Building mortgage note, and the Three Glenlake Building mortgage note. However, only the JPMorgan Chase Credit Facility bears interest at an effectively variable rate, as the variable rates on the $450.0 Million Term Loan, the 333 Market Street Building mortgage note, and the Three Glenlake Building mortgage note have been effectively fixed through the interest rate swap agreements described below.

As of June 30, 2013, we had $51.0 million outstanding under the JPMorgan Chase Credit Facility; $450.0 million outstanding on the $450 Million Term Loan; $207.9 million outstanding on the 333 Market Street Building mortgage note; $26.4 million outstanding on the Three Glenlake Building mortgage note; $248.8 million in 5.875% bonds outstanding; and $673.9million outstanding on fixed-rate, term mortgage loans. The weighted-average interest rate of all of our debt instruments was 4.47% as of June 30, 2013.

Approximately $1,607.0 million of our total debt outstanding as of June 30, 2013, is subject to fixed rates, either directly or when coupled with an interest rate swap agreement. As of June 30, 2013, these balances incurred interest expense at an average interest rate of 4.54% and have expirations ranging from 2013 through 2023. A change in the market interest rate impacts the net financial instrument position of our fixed-rate debt portfolio; however, it has no impact on interest incurred or cash flows. The amounts outstanding on our variable-rate debt facility in the future will largely depend upon future acquisition and disposition activity.

We do not believe there is any exposure to increases in interest rates related to the capital lease obligations of $586.0 million at June 30, 2013, as the obligations are at fixed interest rates.

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 Principal Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) under the Securities Exchange Act of 1934 as of the end of the period covered by this report. Based upon that evaluation, the Principal Executive Officer and Principal Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report in providing a reasonable level of assurance that information we are required to disclose in reports that we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized, and reported within the time periods in SEC rules and forms, including providing a reasonable level of assurance that information required to be disclosed by us in such reports is accumulated and communicated to our management,

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including our Principal Executive Officer and our Principal Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There have been no significant changes in our internal control over financial reporting during the quarter ended June 30, 2013 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

From time to time, we are party to legal proceedings, which arise in the ordinary course of our business. We are not currently involved in any legal proceedings of which the outcome is reasonably likely to have a material adverse effect on our results of operations or financial condition, nor are we aware of any such legal proceedings contemplated by governmental authorities.

ITEM 1A. RISK FACTORS

There have been no material changes from the risk factors disclosed in the "Risk Factors" section of our Annual Report on Form 10-K for the year ended December 31, 2012.

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

(a) All equity securities sold by us in the quarter ended June 30, 2013 were sold in an offering registered under the Securities Act of 1933.

(b) Not applicable.

(c) During the quarter ended June 30, 2013, we redeemed shares as follows (in thousands, except per-share amounts):

Period	Total Number of Shares Purchased(1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)	Approximate Dollar Value of  Shares Available That May Yet Be Redeemed Under the Program(3)
April 2013	2,108	$	6.56	2,108	N/A
May 2013	1,888	$	6.58	1,888	N/A
June 2013	1,752	$	6.57	1,752	N/A

During the quarter ended June 30, 2013, we redeemed all of the shares eligible and properly submitted for redemption prior to the redemption payment date in June 2013. Redemption requests for the period were funded with cash on hand, along with proceeds from the sale of common stock under our DRP.

⁽¹⁾  All purchases of our equity securities by us in the three months ended June 30, 2013 were made pursuant to our SRP.

⁽²⁾  We announced the commencement of the program on December 10, 2003, and amendments to the program on April 22, 2004; March 28, 2006; May 11, 2006; August 10, 2006; August 8, 2007; November 13, 2008; March 31, 2009; August 13, 2009; February 18, 2010; July 21, 2010; September 23, 2010; July 19, 2011; August 12, 2011; November 8, 2011; December 12, 2011; February 28, 2013; and June 27, 2013.

⁽³⁾  The SRP terminated on July 31, 2013.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

(a) There have been no defaults with respect to any of our indebtedness.

(b) Not applicable.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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ITEM 5. OTHER INFORMATION

(a) On April 15, 2013, the compensation committee of our board of directors approved an annual cash incentive compensation program (the “Cash Incentive Program”) pursuant to which cash incentive compensation for our named executive officers and certain other key employees will be determined. In establishing the terms of the Cash Incentive Program as well as other components of our executive compensation program, the compensation committee worked with an independent compensation consultant who provided competitive market compensation data for a group of 12 of our peers and made recommendations for pay levels for each component of our executive compensation. In establishing the total compensation amounts for our executive officers, the committee did not target compensation levels at any specific point or percentile against the peer group data, however, it did look to ensure that overall compensation levels did not exceed the market median, based on the peer groups presented by the independent compensation consultant, unless substantial performance occurs. The peer group considered by our compensation committee consisted of 12 public REITs primarily focused in the office REIT sector, with the majority focused in suburban office. At the time of the study, the peer group companies ranged in size, defined by total capitalization, from approximately $1.5 billion to $8.7 billion, with a median capitalization of $4.7 billion.  Columbia Property Trust's total capitalization of approximately  $5.7 billion placed it within the 75th percentile of the group. The peer group consisted of the following: BioMed Realty Trust, Inc., Brandywine Realty Trust, Corporate Office Properties Trust, Cousins Properties Incorporated, Douglas Emmett, Inc., Duke Realty Corporation, Highwoods Properties, Inc., Kilroy Realty Corporation, Liberty Property Trust, Mack-Cali Realty Corporation, Piedmont Office Realty Trust, Inc., and Washington Real Estate Investment Trust.

The Cash Incentive Program provides for the payment of cash compensation based on employee performance. Each eligible employee will be evaluated based on performance goals that fall within three general categories: corporate, business unit, and individual. The weight given to each of these categories will vary by position, with our Chief Executive Officer and Chief Financial Officer weighted 67%, 0%, and 33%, respectively and Senior Vice Presidents weighted 33%, 33%, and 34%, respectively. Performance goals include both quantitative performance measures such as our adjusted funds from operations per share, net asset value, revenue and expense control as well as more subjective elements. Members of the compensation committee will determine compensation amounts by assessing performance against annually established performance targets, and any payouts under the Cash Incentive Program are in the discretion of the compensation committee.

Under the Cash Incentive Program, target payout opportunities are expressed as a percentage of base salary, with threshold, target and high payout opportunities expressed as a percentage of the target award (actual cash incentive compensation may range anywhere between the threshold and high amounts). Target opportunities are grouped by organizational hierarchy with the target for the Chief Executive Officer being 100% of base salary, the Chief Financial Officer being 90% of base salary (for 2014 and after), and Senior Vice Presidents being 65-75% of base salary. The threshold payout opportunity is 50% of the target and the high payout opportunity is 150% of the target. No cash incentive compensation will be paid if threshold performance is not achieved.

(b) There are no material changes to the procedures by which stockholders may recommend nominees to our board of directors since the filing of our Schedule 14A.

ITEM 6. EXHIBITS

The exhibits required to be filed with this report are set forth on the Exhibit Index to this quarterly report attached hereto.

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SIGNATURES

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

		COLUMBIA PROPERTY TRUST, INC. (Registrant)
Dated:	August 6, 2013	By:	/s/ WENDY W. GILL
			Wendy W. Gill Chief Accounting Officer, Treasurer and Principal Financial Officer

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EXHIBIT INDEX TO

SECOND QUARTER 2013 FORM 10-Q OF

COLUMBIA PROPERTY TRUST, INC.

The following documents are filed as exhibits to this report. Exhibits that are not required for this report are omitted.

Ex.	Description
3.1	Second Amended and Restated Articles of Incorporation as Amended by the First Articles of Amendment (incorporated by reference to Exhibit 3.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013).
3.2	Second Amended and Restated Bylaws (incorporated by reference to Exhibit 3.2 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013).
4.1	Statement regarding restrictions on transferability of shares of common stock (to appear on stock certificate or to be sent upon request and without charge to stockholders issued shares without certificates) (incorporated by reference to Exhibit 4.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013).
4.2	Third Amended and Restated Distribution Reinvestment Plan (incorporated by reference to Exhibit 4.1 to the Company's Annual Report on Form 10-K filed with the Commission on March 1, 2013).
10.1	2013 Long-Term Incentive Plan incorporated by reference to Exhibit A to the Company's Definitive Proxy Statement in Schedule 14A filed with the Commission on April 25, 2013.
31.1*	Certification of the Principal Executive Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of the Principal Financial Officer of the Company, pursuant to Securities Exchange Act Rules 13a-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of the Principal Executive Officer and Principal Financial Officer of the Company, pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
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.
*	Filed herewith.
**	Furnished with this Form 10-Q.

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EX-31.1

EXHIBIT 31.1

PRINCIPAL EXECUTIVE OFFICER

CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

I, E. Nelson Mills, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Property Trust, Inc. for the quarter ended June 30, 2013;

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

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

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

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

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

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

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

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

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

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

Dated:	August 6, 2013	By:	/s/ E. Nelson Mills
			E. Nelson Mills
			Principal Executive Officer

EX-31.2

EXHIBIT 31.2

PRINCIPAL FINANCIAL OFFICER

CERTIFICATION

PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

I, Wendy W. Gill, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Property Trust, Inc. for the quarter ended June 30, 2013;

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

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

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

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

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

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

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

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

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

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

Dated:	August 6, 2013	By:	/s/ Wendy W. Gill
			Wendy W. Gill
			Principal Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

AND PRINCIPAL FINANCIAL OFFICER

PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. 1350)

In connection with the Quarterly Report of Columbia Property Trust, Inc. (the "Registrant") on Form 10-Q for the quarter ended June 30, 2013, as filed with the Securities and Exchange Commission (the "Report"), the undersigned, E. Nelson Mills, Principal Executive Officer of the Registrant, and Wendy W. Gill, Principal Financial Officer of the Registrant, hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350) that, to the best of our 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.

/s/ E. NELSON MILLS

E. Nelson Mills

Principal Executive Officer

August 6, 2013

/s/ WENDY W. GILL

Wendy W. Gill

Principal Financial Officer

August 6, 2013

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Assets Held for Sale and Discontinued Operations

6 Months Ended

Jun. 30, 2013

Discontinued Operation, Additional Disclosures [Abstract]

Discontinued Operations

Discontinued Operations

The historical operating results and gains from the disposition of certain assets, including assets "held for sale" and operating properties sold, are required to be reflected in a separate section ("discontinued operations") in the consolidated statements of operations for all periods presented. As a result, the revenues and expenses of Dvintsev Business Center - Tower B (see Note 3, Real Estate and Other Transactions); the properties included in the portfolio disposition that closed in December 2012 (the "Nine Property Sale"), consisting of the One West Fourth Street, 180 E 100 South, Baldwin Point, Tampa Commons, Lakepointe 5, Lakepointe 3, 11950 Corporate Boulevard, Edgewater Corporate Center, and 2000 Park Lane properties, which closed for $260.5 million, resulting in a net gain of $3.2 million; and 5995 Opus Parkway and Emerald Point, which closed in January 2012 for $60.1 million, resulting in total gains of $16.9 million, are included in income from discontinued operations in the accompanying consolidated statements of operations for all periods presented.

The following table shows the revenues and expenses of the above-described discontinued operations (in thousands):

	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenues:
Rental income	$	2		$	8,983		$	1,309		$	19,372
Tenant reimbursements	7			505			184			1,419
	9			9,488			1,493			20,791
Expenses:
Property operating costs	7			3,131			184			6,613
Asset and property management fees	—			674			223			1,373
Depreciation	—			2,250			375			4,490
Amortization	—			1,208			37			2,545
General and administrative	(119		)	(837		)	828			(351		)
Total expenses	(112		)	6,426			1,647			14,670
Real estate operating income (loss)	121			3,062			(154		)	6,121
Other income (expense):
Interest expense	—			(568		)	—			(1,143		)
Interest and other income	—			—			3			—
Operating income (loss) from discontinued operations	121			2,494			(151		)	4,978
Gain on disposition of discontinued operations	—			62			10,014			16,947
Income from discontinued operations	$	121		$	2,556		$	9,863		$	21,925

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Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Rental income	$ 116,949	$ 109,857	$ 232,070	$ 220,043
Tenant reimbursements	24,451	24,193	49,883	49,273
Hotel income	6,562	6,463	11,516	10,838
Other property income	1,258	458	1,546	2,157
Revenues	149,220	140,971	295,015	282,311
Expenses:
Property operating costs	43,130	40,023	86,842	81,261
Hotel operating costs	4,820	4,996	9,081	9,093
Asset and property management fees:
Related-party	0	8,671	5,541	17,493
Other	680	651	1,380	1,350
Depreciation	30,608	27,982	60,860	55,867
Amortization	22,327	26,751	44,237	52,470
Impairment losses on real estate assets	0	0	16,867	0
General and administrative	9,113	6,614	46,020	11,484
Costs and expenses	110,678	115,688	270,828	229,018
Real estate operating income	38,542	25,283	24,187	53,293
Other income (expense):
Interest expense	(27,175)	(26,526)	(54,435)	(52,807)
Interest and other income	9,274	10,012	18,385	20,028
Gain (loss) on interest rate swaps	164	(13)	221	(89)
Nonoperating income (expense)	(17,737)	(16,527)	(35,829)	(32,868)
Income (loss) before income tax expense	20,805	8,756	(11,642)	20,425
Income tax expense	(325)	(398)	(228)	(301)
Income (loss) from continuing operations	20,480	8,358	(11,870)	20,124
Discontinued operations:
Operating income (loss) from discontinued operations	121	2,494	(151)	4,978
Gains on disposition of discontinued operations	0	62	10,014	16,947
Income from discontinued operations	121	2,556	9,863	21,925
Net income (loss)	20,601	10,914	(2,007)	42,049
Less: net income attributable to nonredeemable noncontrolling interests	0	0	0	(4)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$ 20,601	$ 10,914	$ (2,007)	$ 42,045
Per-share information – basic and diluted:
Income (loss) from continuing operations	$ 0.04	$ 0.02	$ (0.02)	$ 0.04
Income from discontinued operations	$ 0.00	$ 0.00	$ 0.02	$ 0.04
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$ 0.04	$ 0.02	$ 0.00	$ 0.08
Weighted-average common shares outstanding – basic and diluted	543,262	546,134	544,664	545,867
Distributions per share	$ 0.095	$ 0.125	$ 0.19	$ 0.25

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("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 these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation. For further information, refer to the financial statements and footnotes included in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2012.

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets and liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Site improvements	15 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of our assets may be carried at more than an amount that could be realized in a current disposition transaction.

Projections of expected future operating cash flows require that Columbia Property Trust estimates 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 discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of our real estate assets and related intangible assets and net income (loss).

In connection with furthering its portfolio repositioning efforts, in the first quarter of 2013, Columbia Property Trust initiated a process to market for sale a group of 18 properties. Pursuant to the accounting policy outlined above, Columbia Property Trust evaluated the recoverability of the carrying values of each of the properties in this group and determined that the 120 Eagle Rock property in East Hanover, New Jersey and the 333 & 777 Republic Drive property in Allen Park, Michigan are no longer recoverable due to shortening the respective expected property holding periods in connection with these repositioning efforts. As a result, Columbia Property Trust reduced the carrying value of the 120 Eagle Rock property and the 333 & 777 Republic Drive property to reflect their respective fair values estimated based on projected discounted future cash flows and recorded corresponding property impairment losses of $11.7 million and $5.2 million, respectively, in the first quarter of 2013.

The fair value measurements used in this evaluation of nonfinancial assets are considered to be Level 3 valuations within the fair value hierarchy outlined above, as there are significant unobservable inputs. Examples of inputs that were utilized in the fair value calculations include estimated holding periods, discount rates, market capitalization rates, expected lease rental rates, and potential sales prices. The table below represents the detail of the adjustments recognized for the six months endedJune 30, 2013 (in thousands) using Level 3 inputs. There were no adjustments recognized during the six months endedJune 30, 2012.

Property	Net Book Value		Impairment Loss Recognized			Fair Value
120 Eagle Rock	$	23,808	$	(11,708	)	$	12,100
333 & 777 Republic Drive	$	13,359	$	(5,159	)	$	8,200

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of June 30, 2013, none of Columbia Property Trust's properties met the criteria to be classified as held for sale in the accompanying balance sheet.

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessor

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail). As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
June 30, 2013	Gross	$	85,204		$	454,291		$	434,767		$	180,459
	Accumulated Amortization	(57,905		)	(263,015		)	(247,781		)	(89,592		)
	Net	$	27,299		$	191,276		$	186,986		$	90,867
December 31, 2012	Gross	$	86,696		$	459,931		$	437,857		$	182,624
	Accumulated Amortization	(56,259		)	(248,600		)	(230,930		)	(84,326		)
	Net	$	30,437		$	211,331		$	206,927		$	98,298

Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended June 30, 2013	$	1,453	$	9,919	$	10,017	$	3,705
For the three months ended June 30, 2012	$	2,254	$	12,608	$	10,498	$	4,174
For the six months ended June 30, 2013	$	3,138	$	20,054	$	19,941	$	7,431
For the six months ended June 30, 2012	$	4,688	$	25,980	$	21,145	$	8,415

The remaining net intangible assets and liabilities as of June 30, 2013 will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the six months ending December 31, 2013	$	2,954	$	19,442	$	19,767	$	7,363
For the years ending December 31:
2014	5,581		35,447		36,815		14,362
2015	4,580		31,399		32,938		12,828
2016	3,848		24,761		25,907		10,398
2017	1,979		18,366		19,297		8,306
2018	1,168		13,457		13,760		7,557
Thereafter	7,189		48,404		38,502		30,053
	$	27,299	$	191,276	$	186,986	$	90,867

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount 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 lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below-market lease assets of approximately $110.7 million as of June 30, 2013 and December 31, 2012, and recognized amortization of these assets of approximately $0.5 million for the three months ended June 30, 2013 and 2012 and $1.0 million for the six months ended June 30, 2013 and 2012.

As of June 30, 2013, the remaining net below-market lease asset will be amortized as follows (in thousands):

For the six months ending December 31, 2013	$	1,034
For the years ending December 31:
2014	2,069
2015	2,069
2016	2,069
2017	2,069
2018	2,069
Thereafter	87,794
	$	99,173

Prepaid Expenses and Other Assets

Prepaid expenses and other assets primarily are comprised of escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses and other assets will be expensed as incurred or reclassified to other asset accounts upon being put into service in future periods.     

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.

The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	June 30, 2013			December 31, 2012
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(2,587	)	$	(5,305	)
Derivatives not designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(9,648	)	$	(13,109	)

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable. The fair value of Columbia Property Trust's interest rate swaps were $(12.2) million and $(18.4) million at June 30, 2013 and December 31, 2012, respectively.

	Six months ended June 30,
	2013		2012
Market value adjustment to interest rate swaps designated as hedging instruments and included in   other comprehensive income	$	2,717	$	(3,408	)
Gain (loss) on interest rate swap recognized through earnings	$	221	$	(89	)

During the periods presented, there was no hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment.

Income Taxes

Columbia Property Trust 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, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), formerly Wells TRS II, LLC; Columbia KCP TRS, LLC ("Columbia KCP TRS"), formerly Wells KCP TRS, LLC; and Wells Energy TRS, LLC ("Wells Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

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Supplemental Disclosures of Noncash Investing and Financing Activities (Tables)

6 Months Ended

Jun. 30, 2013

Supplemental Cash Flow Information [Abstract]

Schedule of Other Significant Noncash Transactions

Outlined below are significant noncash investing and financing activities for the six months ended June 30, 2013 and 2012 (in thousands):

	Six months ended June 30,
	2013			2012
Other assets assumed at acquisition	$	741		$	—
Other liabilities assumed at acquisition	$	741		$	—
Other liabilities settled at disposition	$	872		$	—
Interest accruing to notes payable	$	159		$	152
Amortization of discounts (premiums) on debt	$	(304	)	$	193
Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	$	2,717		$	(3,408	)
Accrued capital expenditures and deferred lease costs	$	13,408		$	5,432
Accrued deferred financing costs	$	—		$	10
Accrued offering costs	$	6		$	—
Accrued redemptions of common stock	$	2,079		$	1,216
Increase in redeemable common stock	$	22,226		$	38,308

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries

6 Months Ended

Jun. 30, 2013

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non Guarantor Subsidiaries [Abstract]

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries

The 2018 Bonds Payable (see Note 5, Bonds Payable) are guaranteed by Columbia Property Trust and certain direct and indirect subsidiaries of each of Columbia Property Trust and Columbia Property Trust OP. Columbia Property Trust Advisory Services and Columbia Property Trust Services, were added to the non-guarantor grouping upon acquisition in February 2013. In March 2013, as a result of closing of the Nine Property Sale, Columbia Property Trust added four subsidiaries as guarantors to the $450.0 Million Term Loan, the JPMorgan Chase Credit Facility, and the 2018 Bonds Payable, which resulted in the reclassification of prior-period amounts between the guarantor and non-guarantor groupings within the condensed consolidating financial statements to conform with the current period presentation. In accordance with SEC Rule 3-10(d), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP) and Subsidiary Guarantors, as defined in the bond indenture, because all of the following criteria are met:

(1) The subsidiary issuer (Columbia Property Trust OP) and all Subsidiary Guarantors are 100% owned by the parent company guarantor (Columbia Property Trust);

(2) The guarantees are full and unconditional; and

(3) The guarantees are joint and several.

Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of June 30, 2013 and December 31, 2012 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three and six months ended June 30, 2013 and 2012 (in thousands); and its condensed consolidating statements of cash flows for the six months ended June 30, 2013 and 2012 (in thousands).

Condensed Consolidating Balance Sheets (in thousands)

	As of June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	270,261	$	509,834	$	—		$	786,336
Buildings and improvements, net	—		23,275		1,782,978		1,563,899		—			3,370,152
Intangible lease assets, net	—		—		134,093		183,139		—			317,232
Construction in progress	—		713		3,725		2,343		—			6,781
Total real estate assets	—		30,229		2,191,057		2,259,215		—			4,480,501
Cash and cash equivalents	21,945		3,486		20,295		15,941		—			61,667
Investment in subsidiaries	2,931,767		2,638,923		—		—		(5,570,690		)	—
Tenant receivables, net of allowance	—		28		80,511		63,213		(4,279		)	139,473
Prepaid expenses and other assets	178,711		151,742		2,406		25,011		(324,662		)	33,208
Deferred financing costs, net	—		7,145		—		1,807		—			8,952
Intangible lease origination costs, net	—		—		117,184		69,802		—			186,986
Deferred lease costs, net	—		55		63,159		43,438		—			106,652
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439
Liabilities:
Line of credit and notes payable	$	—	$	501,000	$	145,045	$	1,086,145	$	(322,945	)	$	1,409,245
Bonds payable, net	—		248,804		—		—		—			248,804
Accounts payable, accrued expenses, and accrued capital expenditures	2,078		9,691		39,915		50,524		(4,279		)	97,929
Due to affiliates	—		18,029		1,598		96		(1,717		)	18,006
Deferred income	—		—		10,202		12,041		—			22,243
Intangible lease liabilities, net	—		—		40,923		49,944		—			90,867
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	2,078		777,524		703,683		1,318,750		(328,941		)	2,473,094
Redeemable Common Stock	121,752		—		—		—		—			121,752
Equity:
Total equity	3,008,593		2,054,084		2,236,929		1,279,677		(5,570,690		)	3,008,593
Total liabilities, redeemable common stock, and equity	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2012
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	271,757	$	511,239	$	—		$	789,237
Building and improvements, net	—		16,513		1,812,882		1,638,823		—			3,468,218
Intangible lease assets, net	—		—		146,448		195,012		—			341,460
Construction in progress	—		5,252		2,505		4,923		—			12,680
Total real estate assets	—		28,006		2,233,592		2,349,997		—			4,611,595
Cash and cash equivalents	20,914		4,822		13,673		14,248		—			53,657
Investment in subsidiaries	3,068,106		2,679,950		—		—		(5,748,056		)	—
Tenant receivables, net of allowance	—		22		72,283		66,017		(4,223		)	134,099
Prepaid expenses and other assets	178,131		203,589		1,531		26,806		(380,684		)	29,373
Deferred financing costs, net	—		8,498		—		1,992		—			10,490
Intangible lease origination costs, net	—		—		129,947		76,980		—			206,927
Deferred lease costs, net	—		68		54,900		43,840		—			98,808
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949
Liabilities:
Lines of credit and notes payable	$	—	$	492,000	$	145,974	$	1,142,644	$	(379,000	)	$	1,401,618
Bonds payable, net	—		248,678		—		—		—			248,678
Accounts payable, accrued expenses, and accrued capital expenditures	3,645		12,417		39,834		51,185		(4,223		)	102,858
Due to affiliates	—		960		1,593		1,051		(1,684		)	1,920
Deferred income	—		81		16,748		11,242		—			28,071
Intangible lease liabilities, net	—		—		44,201		54,097		—			98,298
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	3,645		754,136		714,350		1,380,219		(384,907		)	2,467,443
Redeemable Common Stock	99,526		—		—		—		—			99,526
Equity:
Total equity	3,163,980		2,170,819		2,257,576		1,319,661		(5,748,056		)	3,163,980
Total liabilities, redeemable common stock, and equity	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	101		$	66,239		$	51,638		$	(1,029	)	$	116,949
Tenant reimbursements	—		(20		)	14,174			10,854			(557		)	24,451
Hotel income	—		—			—			6,562			—			6,562
Other property income	—		—			863			4,200			(3,805		)	1,258
	—		81			81,276			73,254			(5,391		)	149,220
Expenses:
Property operating costs	—		594			21,828			21,500			(792		)	43,130
Hotel operating costs	—		—			—			5,749			(929		)	4,820
Asset and property management fees:
Related-party	—		4			1,104			1,254			(2,362		)	—
Other	—		—			10			670			—			680
Depreciation	—		328			16,211			14,069			—			30,608
Amortization	—		7			12,856			9,464			—			22,327
Impairment loss on real estate assets	—		—			—			—			—			—
General and administrative	—		4,046			226			6,153			(1,312		)	9,113
	—		4,979			52,235			58,859			(5,395		)	110,678
Real estate operating (loss) income	—		(4,898		)	29,041			14,395			4			38,542
Other income (expense):
Interest expense	—		(8,148		)	(10,029		)	(13,721		)	4,723			(27,175		)
Interest and other income (expense)	2,002		2,723			7,309			1,963			(4,723		)	9,274
Gain on interest rate swaps	—		—			—			164			—			164
Income (loss) from equity investment	18,599		26,693			—			—			(45,292		)	—
	20,601		21,268			(2,720		)	(11,594		)	(45,292		)	(17,737		)
Income (loss) before income tax benefit (expense)	20,601		16,370			26,321			2,801			(45,288		)	20,805
Income tax benefit (expense)	—		(1		)	(62		)	(262		)	—			(325		)
Income (loss) from continuing operations	20,601		16,369			26,259			2,539			(45,288		)	20,480
Discontinued operations:
Operating income from discontinued operations	—		—			(24		)	145			—			121
Gain on disposition of discontinued operations	—		—			—			—			—			—
Income from discontinued operations	—		—			(24		)	145			—			121
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369		$	26,235		$	2,684		$	(45,288	)	$	20,601

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	90		$	56,466		$	54,111		$	(810	)	$	109,857
Tenant reimbursements	—			51			9,672			15,814			(1,344		)	24,193
Hotel income	—			—			—			6,463			—			6,463
Other property income	—			38			201			417			(198		)	458
	—			179			66,339			76,805			(2,352		)	140,971
Expenses:
Property operating costs	—			464			16,084			24,979			(1,504		)	40,023
Hotel operating costs	—			—			—			5,806			(810		)	4,996
Asset and property management fees:
Related-party	7,569			4			421			717			(40		)	8,671
Other	—			—			394			257			—			651
Depreciation	—			177			13,201			14,604			—			27,982
Amortization	—			6			13,943			12,802			—			26,751
General and administrative	—			4,559			1,611			442			2			6,614
	7,569			5,210			45,654			59,607			(2,352		)	115,688
Real estate operating income (loss)	(7,569		)	(5,031		)	20,685			17,198			—			25,283
Other income (expense):
Interest expense	—			(8,084		)	(10,064		)	(13,134		)	4,756			(26,526		)
Interest and other income (expense)	1,997			2,759			7,307			2,705			(4,756		)	10,012
Loss on interest rate swaps	—			—			—			(13		)	—			(13		)
Income (loss) from equity investment	16,486			23,306			—			—			(39,792		)	—
	18,483			17,981			(2,757		)	(10,442		)	(39,792		)	(16,527		)
Income (loss) before income tax benefit (expense)	10,914			12,950			17,928			6,756			(39,792		)	8,756
Income tax benefit (expense)	—			(3		)	(51		)	(344		)	—			(398		)
Income (loss) from continuing operations	10,914			12,947			17,877			6,412			(39,792		)	8,358
Discontinued operations:
Operating loss from discontinued operations	—			1,708			578			208			—			2,494
Gain on disposition of discontinued operations	—			—			—			62			—			62
Income from discontinued operations	—			1,708			578			270			—			2,556
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455		$	6,682		$	(39,792	)	$	10,914

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	202		$	130,852		$	103,059		$	(2,043	)	$	232,070
Tenant reimbursements	—			83			29,135			21,900			(1,235		)	49,883
Hotel income	—			—			—			11,516			—			11,516
Other property income	—			17			863			5,881			(5,215		)	1,546
	—			302			160,850			142,356			(8,493		)	295,015
Expenses:
Property operating costs	—			1,069			44,284			43,139			(1,650		)	86,842
Hotel operating costs	—			—			—			10,941			(1,860		)	9,081
Asset and property management fees:
Related-party	5,018			7			1,927			2,232			(3,643		)	5,541
Other	—			—			272			1,108			—			1,380
Depreciation	—			561			32,343			27,956			—			60,860
Amortization	—			14			25,638			18,585			—			44,237
Impairment loss on real estate asset	—			—			5,159			11,708			—			16,867
General and administrative	—			37,751			1,163			8,943			(1,837		)	46,020
	5,018			39,402			110,786			124,612			(8,990		)	270,828
Real estate operating income (loss)	(5,018		)	(39,100		)	50,064			17,744			497			24,187
Other income (expense):
Interest expense	—			(16,325		)	(20,067		)	(27,494		)	9,451			(54,435		)
Interest and other income (expense)	3,999			5,455			14,616			3,766			(9,451		)	18,385
Loss on interest rate swaps	—			—			—			221			—			221
Income (loss) from equity investment	(988		)	44,994			—			—			(44,006		)	—
	3,011			34,124			(5,451		)	(23,507		)	(44,006		)	(35,829		)
Income (loss) before income tax expense	(2,007		)	(4,976		)	44,613			(5,763		)	(43,509		)	(11,642		)
Income tax expense	—			(2		)	(124		)	(102		)	—			(228		)
Income (loss) from continuing operations	(2,007		)	(4,978		)	44,489			(5,865		)	(43,509		)	(11,870		)
Discontinued operations:
Operating loss from discontinued operations	—			658			(5		)	(804		)	—			(151		)
Gain on disposition of discontinued operations	—			—			—			10,014			—			10,014
Income from discontinued operations	—			658			(5		)	9,210			—			9,863
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484		$	3,345		$	(43,509	)	$	(2,007	)

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	1,450		$	111,999		$	108,154		$	(1,560	)	$	220,043
Tenant reimbursements	—			66			19,349			31,202			(1,344		)	49,273
Hotel income	—			—			—			10,838			—			10,838
Other property income	—			76			403			2,021			(343		)	2,157
	—			1,592			131,751			152,215			(3,247		)	282,311
Expenses:
Property operating costs	—			1,006			31,859			50,007			(1,611		)	81,261
Hotel operating costs	—			—			—			10,653			(1,560		)	9,093
Asset and property management fees:
Related-party	15,125			47			851			1,546			(76		)	17,493
Other	—			—			813			537			—			1,350
Depreciation	—			350			26,326			29,191			—			55,867
Amortization	—			344			25,936			26,190			—			52,470
General and administrative	—			8,914			1,800			770			—			11,484
	15,125			10,661			87,585			118,894			(3,247		)	229,018
Real estate operating income (loss)	(15,125		)	(9,069		)	44,166			33,321			—			53,293
Other income (expense):
Interest expense	—			(15,887		)	(20,136		)	(26,301		)	9,517			(52,807		)
Interest and other income (expense)	3,994			5,526			14,615			5,410			(9,517		)	20,028
Loss on interest rate swaps	—			—			—			(89		)	—			(89		)
Income (loss) from equity investment	53,176			66,971			—			—			(120,147		)	—
	57,170			56,610			(5,521		)	(20,980		)	(120,147		)	(32,868		)
Income (loss) before income tax benefit (expense)	42,045			47,541			38,645			12,341			(120,147		)	20,425
Income tax benefit (expense)	—			(14		)	(101		)	(186		)	—			(301		)
Income (loss) from continuing operations	42,045			47,527			38,544			12,155			(120,147		)	20,124
Discontinued operations:
Operating loss from discontinued operations	—			3,407			1,242			329			—			4,978
Gain on disposition of discontinued operations	—			—			—			16,947			—			16,947
Income from discontinued operations	—			3,407			1,242			17,276			—			21,925
Net income (loss)	42,045			50,934			39,786			29,431			(120,147		)	42,049
Less: Net loss (income) attributable to noncontrolling interest	—			—			—			(4		)	—			(4		)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786		$	29,427		$	(120,147	)	$	42,045

Consolidating Statements of Comprehensive Income (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369	$	26,235	$	2,684	$	(45,288	)	$	20,601
Market value adjustment to interest rate swap	2,168		2,168		—		—		(2,168		)	2,168
Comprehensive income (loss)	$	22,769	$	18,537	$	26,235	$	2,684	$	(47,456	)	$	22,769

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455	$	6,682	$	(39,792	)	$	10,914
Market value adjustment to interest rate swap	(4,016		)	(4,016		)	—		—		4,016			(4,016		)
Comprehensive income (loss)	$	6,898		$	10,639		$	18,455	$	6,682	$	(35,776	)	$	6,898

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484	$	3,345		$	(43,509	)	$	(2,007	)
Foreign currency translation adjustment	(83		)	—			—		(83		)	83			(83		)
Market value adjustment to interest rate swap	2,717			2,717			—		—			(2,717		)	2,717
Comprehensive income (loss)	$	627		$	(1,603	)	$	44,484	$	3,262		$	(46,143	)	$	627

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786	$	29,427	$	(120,147	)	$	42,045
Market value adjustment to interest rate swap	(3,408		)	(3,408		)	—		—		3,408			(3,408		)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	38,637			47,526			39,786		29,427		(116,739		)	38,637
Comprehensive income attributable to noncontrolling interests	—			—			—		4		—			4
Comprehensive income (loss)	$	38,637		$	47,526		$	39,786	$	29,431	$	(116,739	)	$	38,641

Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(41,902	)	$	96,132		$	48,091		$	102,321
Cash flows from investing activities:
Net proceeds from sale of real estate	—			65,928			—			—			65,928
Investment in real estate and related assets	—			(3,355		)	(12,007		)	(16,949		)	(32,311		)
Net cash provided by (used in) investing activities	—			62,573			(12,007		)	(16,949		)	33,617
Cash flows from financing activities:
Borrowings, net of fees	—			119,801			—			(41		)	119,760
Repayments	—			(111,000		)	—			(1,227		)	(112,227		)
Issuance of common stock, net of redemptions and fees	(32,328		)	—			—			—			(32,328		)
Distributions	(103,030		)	—			—			—			(103,030		)
Intercompany transfers, net	136,389			(30,808		)	(77,503		)	(28,078		)	—
Net cash provided by (used in) financing activities	1,031			(22,007		)	(77,503		)	(29,346		)	(127,825		)
Net increase (decrease) in cash and cash equivalents	1,031			(1,336		)	6,622			1,796			8,113
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(103		)	(103		)
Cash and cash equivalents, beginning of period	20,914			4,822			13,673			14,248			53,657
Cash and cash equivalents, end of period	$	21,945		$	3,486		$	20,295		$	15,941		$	61,667

Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(40,251	)	$	111,220		$	62,679		$	133,648
Cash flows from investing activities:
Net proceeds from sale of real estate	—			57,747			—			—			57,747
Investment in real estate and related assets	—			(883		)	(12,369		)	(17,026		)	(30,278		)
Net cash provided by (used in) investing activities	—			56,864			(12,369		)	(17,026		)	27,469
Cash flows from financing activities:
Borrowings, net of fees	—			475,888			—			—			475,888
Repayments	—			(456,000		)	—			(34,998		)	(490,998		)
Issuance of common stock, net of redemptions and fees	11,466			—			—			—			11,466
Distributions	(135,984		)	—			—			(15		)	(135,999		)
Intercompany transfers	149,143			(42,623		)	(100,564		)	(5,956		)	—
Redemption of noncontrolling interest	—			—			—			(301		)	(301		)
Net cash provided by (used in) financing activities	24,625			(22,735		)	(100,564		)	(41,270		)	(139,944		)
Net increase (decrease) in cash and cash equivalents	24,625			(6,122		)	(1,713		)	4,383			21,173
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(23		)	(23		)
Cash and cash equivalents, beginning of period	11,291			10,597			9,134			8,446			39,468
Cash and cash equivalents, end of period	$	35,916		$	4,475		$	7,421		$	12,806		$	60,618

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Rental income	$ 116,949	$ 109,857	$ 232,070	$ 220,043
Tenant reimbursements	24,451	24,193	49,883	49,273
Hotel income	6,562	6,463	11,516	10,838
Other property income	1,258	458	1,546	2,157
Revenues	149,220	140,971	295,015	282,311
Expenses:
Property operating costs	43,130	40,023	86,842	81,261
Hotel operating costs	4,820	4,996	9,081	9,093
Related-party	0	8,671	5,541	17,493
Other	680	651	1,380	1,350
Depreciation	30,608	27,982	60,860	55,867
Amortization	22,327	26,751	44,237	52,470
Impairment losses on real estate assets	0	0	16,867	0
General and administrative	9,113	6,614	46,020	11,484
Costs and expenses	110,678	115,688	270,828	229,018
Real estate operating income	38,542	25,283	24,187	53,293
Other income (expense):
Interest expense	(27,175)	(26,526)	(54,435)	(52,807)
Interest and other income	9,274	10,012	18,385	20,028
Gain (loss) on interest rate swaps	164	(13)	221	(89)
Income (loss) from equity investment	0	0	0	0
Nonoperating income (expense)	(17,737)	(16,527)	(35,829)	(32,868)
Income (loss) before income tax expense	20,805	8,756	(11,642)	20,425
Income tax benefit (expense)	(325)	(398)	(228)	(301)
Income (loss) from continuing operations	20,480	8,358	(11,870)	20,124
Discontinued operations:
Operating loss from discontinued operations	121	2,494	(151)	4,978
Gains on disposition of discontinued operations	0	62	10,014	16,947
Income from discontinued operations	121	2,556	9,863	21,925
Net income (loss)	20,601	10,914	(2,007)	42,049
Less: net income attributable to nonredeemable noncontrolling interests	0	0	0	(4)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	20,601	10,914	(2,007)	42,045
Columbia Property Trust (Parent)
Revenues:
Rental income	0	0	0	0
Tenant reimbursements	0	0	0	0
Hotel income	0	0	0	0
Other property income	0	0	0	0
Revenues	0	0	0	0
Expenses:
Property operating costs	0	0	0	0
Hotel operating costs	0	0	0	0
Related-party	0	7,569	5,018	15,125
Other	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Impairment losses on real estate assets	0		0
General and administrative	0	0	0	0
Costs and expenses	0	7,569	5,018	15,125
Real estate operating income	0	(7,569)	(5,018)	(15,125)
Other income (expense):
Interest expense	0	0	0	0
Interest and other income	2,002	1,997	3,999	3,994
Gain (loss) on interest rate swaps	0	0	0	0
Income (loss) from equity investment	18,599	16,486	(988)	53,176
Nonoperating income (expense)	20,601	18,483	3,011	57,170
Income (loss) before income tax expense	20,601	10,914	(2,007)	42,045
Income tax benefit (expense)	0	0	0	0
Income (loss) from continuing operations	20,601	10,914	(2,007)	42,045
Discontinued operations:
Operating loss from discontinued operations	0	0	0	0
Gains on disposition of discontinued operations	0	0	0	0
Income from discontinued operations	0	0	0	0
Net income (loss)				42,045
Less: net income attributable to nonredeemable noncontrolling interests				0
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	20,601	10,914	(2,007)	42,045
Columbia Property Trust OP (the Issuer)
Revenues:
Rental income	101	90	202	1,450
Tenant reimbursements	(20)	51	83	66
Hotel income	0	0	0	0
Other property income	0	38	17	76
Revenues	81	179	302	1,592
Expenses:
Property operating costs	594	464	1,069	1,006
Hotel operating costs	0	0	0	0
Related-party	4	4	7	47
Other	0	0	0	0
Depreciation	328	177	561	350
Amortization	7	6	14	344
Impairment losses on real estate assets	0		0
General and administrative	4,046	4,559	37,751	8,914
Costs and expenses	4,979	5,210	39,402	10,661
Real estate operating income	(4,898)	(5,031)	(39,100)	(9,069)
Other income (expense):
Interest expense	(8,148)	(8,084)	(16,325)	(15,887)
Interest and other income	2,723	2,759	5,455	5,526
Gain (loss) on interest rate swaps	0	0	0	0
Income (loss) from equity investment	26,693	23,306	44,994	66,971
Nonoperating income (expense)	21,268	17,981	34,124	56,610
Income (loss) before income tax expense	16,370	12,950	(4,976)	47,541
Income tax benefit (expense)	(1)	(3)	(2)	(14)
Income (loss) from continuing operations	16,369	12,947	(4,978)	47,527
Discontinued operations:
Operating loss from discontinued operations	0	1,708	658	3,407
Gains on disposition of discontinued operations	0	0	0	0
Income from discontinued operations	0	1,708	658	3,407
Net income (loss)				50,934
Less: net income attributable to nonredeemable noncontrolling interests				0
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	16,369	14,655	(4,320)	50,934
Guarantors
Revenues:
Rental income	66,239	56,466	130,852	111,999
Tenant reimbursements	14,174	9,672	29,135	19,349
Hotel income	0	0	0	0
Other property income	863	201	863	403
Revenues	81,276	66,339	160,850	131,751
Expenses:
Property operating costs	21,828	16,084	44,284	31,859
Hotel operating costs	0	0	0	0
Related-party	1,104	421	1,927	851
Other	10	394	272	813
Depreciation	16,211	13,201	32,343	26,326
Amortization	12,856	13,943	25,638	25,936
Impairment losses on real estate assets	0		5,159
General and administrative	226	1,611	1,163	1,800
Costs and expenses	52,235	45,654	110,786	87,585
Real estate operating income	29,041	20,685	50,064	44,166
Other income (expense):
Interest expense	(10,029)	(10,064)	(20,067)	(20,136)
Interest and other income	7,309	7,307	14,616	14,615
Gain (loss) on interest rate swaps	0	0	0	0
Income (loss) from equity investment	0	0	0	0
Nonoperating income (expense)	(2,720)	(2,757)	(5,451)	(5,521)
Income (loss) before income tax expense	26,321	17,928	44,613	38,645
Income tax benefit (expense)	(62)	(51)	(124)	(101)
Income (loss) from continuing operations	26,259	17,877	44,489	38,544
Discontinued operations:
Operating loss from discontinued operations	(24)	578	(5)	1,242
Gains on disposition of discontinued operations	0	0	0	0
Income from discontinued operations	(24)	578	(5)	1,242
Net income (loss)				39,786
Less: net income attributable to nonredeemable noncontrolling interests				0
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	26,235	18,455	44,484	39,786
Non- Guarantors
Revenues:
Rental income	51,638	54,111	103,059	108,154
Tenant reimbursements	10,854	15,814	21,900	31,202
Hotel income	6,562	6,463	11,516	10,838
Other property income	4,200	417	5,881	2,021
Revenues	73,254	76,805	142,356	152,215
Expenses:
Property operating costs	21,500	24,979	43,139	50,007
Hotel operating costs	5,749	5,806	10,941	10,653
Related-party	1,254	717	2,232	1,546
Other	670	257	1,108	537
Depreciation	14,069	14,604	27,956	29,191
Amortization	9,464	12,802	18,585	26,190
Impairment losses on real estate assets	0		11,708
General and administrative	6,153	442	8,943	770
Costs and expenses	58,859	59,607	124,612	118,894
Real estate operating income	14,395	17,198	17,744	33,321
Other income (expense):
Interest expense	(13,721)	(13,134)	(27,494)	(26,301)
Interest and other income	1,963	2,705	3,766	5,410
Gain (loss) on interest rate swaps	164	(13)	221	(89)
Income (loss) from equity investment	0	0	0	0
Nonoperating income (expense)	(11,594)	(10,442)	(23,507)	(20,980)
Income (loss) before income tax expense	2,801	6,756	(5,763)	12,341
Income tax benefit (expense)	(262)	(344)	(102)	(186)
Income (loss) from continuing operations	2,539	6,412	(5,865)	12,155
Discontinued operations:
Operating loss from discontinued operations	145	208	(804)	329
Gains on disposition of discontinued operations	0	62	10,014	16,947
Income from discontinued operations	145	270	9,210	17,276
Net income (loss)				29,431
Less: net income attributable to nonredeemable noncontrolling interests				(4)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	2,684	6,682	3,345	29,427
Consolidating adjustments
Revenues:
Rental income	(1,029)	(810)	(2,043)	(1,560)
Tenant reimbursements	(557)	(1,344)	(1,235)	(1,344)
Hotel income	0	0	0	0
Other property income	(3,805)	(198)	(5,215)	(343)
Revenues	(5,391)	(2,352)	(8,493)	(3,247)
Expenses:
Property operating costs	(792)	(1,504)	(1,650)	(1,611)
Hotel operating costs	(929)	(810)	(1,860)	(1,560)
Related-party	(2,362)	(40)	(3,643)	(76)
Other	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Impairment losses on real estate assets	0		0
General and administrative	(1,312)	2	(1,837)	0
Costs and expenses	(5,395)	(2,352)	(8,990)	(3,247)
Real estate operating income	4	0	497	0
Other income (expense):
Interest expense	4,723	4,756	9,451	9,517
Interest and other income	(4,723)	(4,756)	(9,451)	(9,517)
Gain (loss) on interest rate swaps	0	0	0	0
Income (loss) from equity investment	(45,292)	(39,792)	(44,006)	(120,147)
Nonoperating income (expense)	(45,292)	(39,792)	(44,006)	(120,147)
Income (loss) before income tax expense	(45,288)	(39,792)	(43,509)	(120,147)
Income tax benefit (expense)	0	0	0	0
Income (loss) from continuing operations	(45,288)	(39,792)	(43,509)	(120,147)
Discontinued operations:
Operating loss from discontinued operations	0	0	0	0
Gains on disposition of discontinued operations	0	0	0	0
Income from discontinued operations	0	0	0	0
Net income (loss)				(120,147)
Less: net income attributable to nonredeemable noncontrolling interests				0
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$ (45,288)	$ (39,792)	$ (43,509)	$ (120,147)

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Line of Credit and Notes Payable (Narratives) (Details) (Loans Payable, USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Loans Payable
Debt Instrument [Line Items]
Estimated fair value of line of credit and notes payable	$ 1,420.5		$ 1,433.1
Interest payments	30.4	24.5
Interest capitalized	$ 0	$ 0

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Tables)

6 Months Ended

Jun. 30, 2013

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non Guarantor Subsidiaries [Abstract]

Condensed Financial Information of Parent Company Only Disclosure

Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of June 30, 2013 and December 31, 2012 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three and six months ended June 30, 2013 and 2012 (in thousands); and its condensed consolidating statements of cash flows for the six months ended June 30, 2013 and 2012 (in thousands).

Condensed Consolidating Balance Sheets (in thousands)

	As of June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	270,261	$	509,834	$	—		$	786,336
Buildings and improvements, net	—		23,275		1,782,978		1,563,899		—			3,370,152
Intangible lease assets, net	—		—		134,093		183,139		—			317,232
Construction in progress	—		713		3,725		2,343		—			6,781
Total real estate assets	—		30,229		2,191,057		2,259,215		—			4,480,501
Cash and cash equivalents	21,945		3,486		20,295		15,941		—			61,667
Investment in subsidiaries	2,931,767		2,638,923		—		—		(5,570,690		)	—
Tenant receivables, net of allowance	—		28		80,511		63,213		(4,279		)	139,473
Prepaid expenses and other assets	178,711		151,742		2,406		25,011		(324,662		)	33,208
Deferred financing costs, net	—		7,145		—		1,807		—			8,952
Intangible lease origination costs, net	—		—		117,184		69,802		—			186,986
Deferred lease costs, net	—		55		63,159		43,438		—			106,652
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439
Liabilities:
Line of credit and notes payable	$	—	$	501,000	$	145,045	$	1,086,145	$	(322,945	)	$	1,409,245
Bonds payable, net	—		248,804		—		—		—			248,804
Accounts payable, accrued expenses, and accrued capital expenditures	2,078		9,691		39,915		50,524		(4,279		)	97,929
Due to affiliates	—		18,029		1,598		96		(1,717		)	18,006
Deferred income	—		—		10,202		12,041		—			22,243
Intangible lease liabilities, net	—		—		40,923		49,944		—			90,867
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	2,078		777,524		703,683		1,318,750		(328,941		)	2,473,094
Redeemable Common Stock	121,752		—		—		—		—			121,752
Equity:
Total equity	3,008,593		2,054,084		2,236,929		1,279,677		(5,570,690		)	3,008,593
Total liabilities, redeemable common stock, and equity	$	3,132,423	$	2,831,608	$	2,940,612	$	2,598,427	$	(5,899,631	)	$	5,603,439

Condensed Consolidating Balance Sheets (in thousands)

	As of December 31, 2012
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Assets:
Real estate assets, at cost:
Land	$	—	$	6,241	$	271,757	$	511,239	$	—		$	789,237
Building and improvements, net	—		16,513		1,812,882		1,638,823		—			3,468,218
Intangible lease assets, net	—		—		146,448		195,012		—			341,460
Construction in progress	—		5,252		2,505		4,923		—			12,680
Total real estate assets	—		28,006		2,233,592		2,349,997		—			4,611,595
Cash and cash equivalents	20,914		4,822		13,673		14,248		—			53,657
Investment in subsidiaries	3,068,106		2,679,950		—		—		(5,748,056		)	—
Tenant receivables, net of allowance	—		22		72,283		66,017		(4,223		)	134,099
Prepaid expenses and other assets	178,131		203,589		1,531		26,806		(380,684		)	29,373
Deferred financing costs, net	—		8,498		—		1,992		—			10,490
Intangible lease origination costs, net	—		—		129,947		76,980		—			206,927
Deferred lease costs, net	—		68		54,900		43,840		—			98,808
Investment in development authority bonds	—		—		466,000		120,000		—			586,000
Total assets	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949
Liabilities:
Lines of credit and notes payable	$	—	$	492,000	$	145,974	$	1,142,644	$	(379,000	)	$	1,401,618
Bonds payable, net	—		248,678		—		—		—			248,678
Accounts payable, accrued expenses, and accrued capital expenditures	3,645		12,417		39,834		51,185		(4,223		)	102,858
Due to affiliates	—		960		1,593		1,051		(1,684		)	1,920
Deferred income	—		81		16,748		11,242		—			28,071
Intangible lease liabilities, net	—		—		44,201		54,097		—			98,298
Obligations under capital leases	—		—		466,000		120,000		—			586,000
Total liabilities	3,645		754,136		714,350		1,380,219		(384,907		)	2,467,443
Redeemable Common Stock	99,526		—		—		—		—			99,526
Equity:
Total equity	3,163,980		2,170,819		2,257,576		1,319,661		(5,748,056		)	3,163,980
Total liabilities, redeemable common stock, and equity	$	3,267,151	$	2,924,955	$	2,971,926	$	2,699,880	$	(6,132,963	)	$	5,730,949

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—	$	101		$	66,239		$	51,638		$	(1,029	)	$	116,949
Tenant reimbursements	—		(20		)	14,174			10,854			(557		)	24,451
Hotel income	—		—			—			6,562			—			6,562
Other property income	—		—			863			4,200			(3,805		)	1,258
	—		81			81,276			73,254			(5,391		)	149,220
Expenses:
Property operating costs	—		594			21,828			21,500			(792		)	43,130
Hotel operating costs	—		—			—			5,749			(929		)	4,820
Asset and property management fees:
Related-party	—		4			1,104			1,254			(2,362		)	—
Other	—		—			10			670			—			680
Depreciation	—		328			16,211			14,069			—			30,608
Amortization	—		7			12,856			9,464			—			22,327
Impairment loss on real estate assets	—		—			—			—			—			—
General and administrative	—		4,046			226			6,153			(1,312		)	9,113
	—		4,979			52,235			58,859			(5,395		)	110,678
Real estate operating (loss) income	—		(4,898		)	29,041			14,395			4			38,542
Other income (expense):
Interest expense	—		(8,148		)	(10,029		)	(13,721		)	4,723			(27,175		)
Interest and other income (expense)	2,002		2,723			7,309			1,963			(4,723		)	9,274
Gain on interest rate swaps	—		—			—			164			—			164
Income (loss) from equity investment	18,599		26,693			—			—			(45,292		)	—
	20,601		21,268			(2,720		)	(11,594		)	(45,292		)	(17,737		)
Income (loss) before income tax benefit (expense)	20,601		16,370			26,321			2,801			(45,288		)	20,805
Income tax benefit (expense)	—		(1		)	(62		)	(262		)	—			(325		)
Income (loss) from continuing operations	20,601		16,369			26,259			2,539			(45,288		)	20,480
Discontinued operations:
Operating income from discontinued operations	—		—			(24		)	145			—			121
Gain on disposition of discontinued operations	—		—			—			—			—			—
Income from discontinued operations	—		—			(24		)	145			—			121
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369		$	26,235		$	2,684		$	(45,288	)	$	20,601

Consolidating Statements of Operations (in thousands)

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	90		$	56,466		$	54,111		$	(810	)	$	109,857
Tenant reimbursements	—			51			9,672			15,814			(1,344		)	24,193
Hotel income	—			—			—			6,463			—			6,463
Other property income	—			38			201			417			(198		)	458
	—			179			66,339			76,805			(2,352		)	140,971
Expenses:
Property operating costs	—			464			16,084			24,979			(1,504		)	40,023
Hotel operating costs	—			—			—			5,806			(810		)	4,996
Asset and property management fees:
Related-party	7,569			4			421			717			(40		)	8,671
Other	—			—			394			257			—			651
Depreciation	—			177			13,201			14,604			—			27,982
Amortization	—			6			13,943			12,802			—			26,751
General and administrative	—			4,559			1,611			442			2			6,614
	7,569			5,210			45,654			59,607			(2,352		)	115,688
Real estate operating income (loss)	(7,569		)	(5,031		)	20,685			17,198			—			25,283
Other income (expense):
Interest expense	—			(8,084		)	(10,064		)	(13,134		)	4,756			(26,526		)
Interest and other income (expense)	1,997			2,759			7,307			2,705			(4,756		)	10,012
Loss on interest rate swaps	—			—			—			(13		)	—			(13		)
Income (loss) from equity investment	16,486			23,306			—			—			(39,792		)	—
	18,483			17,981			(2,757		)	(10,442		)	(39,792		)	(16,527		)
Income (loss) before income tax benefit (expense)	10,914			12,950			17,928			6,756			(39,792		)	8,756
Income tax benefit (expense)	—			(3		)	(51		)	(344		)	—			(398		)
Income (loss) from continuing operations	10,914			12,947			17,877			6,412			(39,792		)	8,358
Discontinued operations:
Operating loss from discontinued operations	—			1,708			578			208			—			2,494
Gain on disposition of discontinued operations	—			—			—			62			—			62
Income from discontinued operations	—			1,708			578			270			—			2,556
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455		$	6,682		$	(39,792	)	$	10,914

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	202		$	130,852		$	103,059		$	(2,043	)	$	232,070
Tenant reimbursements	—			83			29,135			21,900			(1,235		)	49,883
Hotel income	—			—			—			11,516			—			11,516
Other property income	—			17			863			5,881			(5,215		)	1,546
	—			302			160,850			142,356			(8,493		)	295,015
Expenses:
Property operating costs	—			1,069			44,284			43,139			(1,650		)	86,842
Hotel operating costs	—			—			—			10,941			(1,860		)	9,081
Asset and property management fees:
Related-party	5,018			7			1,927			2,232			(3,643		)	5,541
Other	—			—			272			1,108			—			1,380
Depreciation	—			561			32,343			27,956			—			60,860
Amortization	—			14			25,638			18,585			—			44,237
Impairment loss on real estate asset	—			—			5,159			11,708			—			16,867
General and administrative	—			37,751			1,163			8,943			(1,837		)	46,020
	5,018			39,402			110,786			124,612			(8,990		)	270,828
Real estate operating income (loss)	(5,018		)	(39,100		)	50,064			17,744			497			24,187
Other income (expense):
Interest expense	—			(16,325		)	(20,067		)	(27,494		)	9,451			(54,435		)
Interest and other income (expense)	3,999			5,455			14,616			3,766			(9,451		)	18,385
Loss on interest rate swaps	—			—			—			221			—			221
Income (loss) from equity investment	(988		)	44,994			—			—			(44,006		)	—
	3,011			34,124			(5,451		)	(23,507		)	(44,006		)	(35,829		)
Income (loss) before income tax expense	(2,007		)	(4,976		)	44,613			(5,763		)	(43,509		)	(11,642		)
Income tax expense	—			(2		)	(124		)	(102		)	—			(228		)
Income (loss) from continuing operations	(2,007		)	(4,978		)	44,489			(5,865		)	(43,509		)	(11,870		)
Discontinued operations:
Operating loss from discontinued operations	—			658			(5		)	(804		)	—			(151		)
Gain on disposition of discontinued operations	—			—			—			10,014			—			10,014
Income from discontinued operations	—			658			(5		)	9,210			—			9,863
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484		$	3,345		$	(43,509	)	$	(2,007	)

Consolidating Statements of Operations (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors			Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Revenues:
Rental income	$	—		$	1,450		$	111,999		$	108,154		$	(1,560	)	$	220,043
Tenant reimbursements	—			66			19,349			31,202			(1,344		)	49,273
Hotel income	—			—			—			10,838			—			10,838
Other property income	—			76			403			2,021			(343		)	2,157
	—			1,592			131,751			152,215			(3,247		)	282,311
Expenses:
Property operating costs	—			1,006			31,859			50,007			(1,611		)	81,261
Hotel operating costs	—			—			—			10,653			(1,560		)	9,093
Asset and property management fees:
Related-party	15,125			47			851			1,546			(76		)	17,493
Other	—			—			813			537			—			1,350
Depreciation	—			350			26,326			29,191			—			55,867
Amortization	—			344			25,936			26,190			—			52,470
General and administrative	—			8,914			1,800			770			—			11,484
	15,125			10,661			87,585			118,894			(3,247		)	229,018
Real estate operating income (loss)	(15,125		)	(9,069		)	44,166			33,321			—			53,293
Other income (expense):
Interest expense	—			(15,887		)	(20,136		)	(26,301		)	9,517			(52,807		)
Interest and other income (expense)	3,994			5,526			14,615			5,410			(9,517		)	20,028
Loss on interest rate swaps	—			—			—			(89		)	—			(89		)
Income (loss) from equity investment	53,176			66,971			—			—			(120,147		)	—
	57,170			56,610			(5,521		)	(20,980		)	(120,147		)	(32,868		)
Income (loss) before income tax benefit (expense)	42,045			47,541			38,645			12,341			(120,147		)	20,425
Income tax benefit (expense)	—			(14		)	(101		)	(186		)	—			(301		)
Income (loss) from continuing operations	42,045			47,527			38,544			12,155			(120,147		)	20,124
Discontinued operations:
Operating loss from discontinued operations	—			3,407			1,242			329			—			4,978
Gain on disposition of discontinued operations	—			—			—			16,947			—			16,947
Income from discontinued operations	—			3,407			1,242			17,276			—			21,925
Net income (loss)	42,045			50,934			39,786			29,431			(120,147		)	42,049
Less: Net loss (income) attributable to noncontrolling interest	—			—			—			(4		)	—			(4		)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786		$	29,427		$	(120,147	)	$	42,045

Consolidating Statements of Comprehensive Income (in thousands)

	For the three months ended June 30, 2013
	Columbia Property Trust (Parent)		Columbia Property Trust OP  (the Issuer)		Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	20,601	$	16,369	$	26,235	$	2,684	$	(45,288	)	$	20,601
Market value adjustment to interest rate swap	2,168		2,168		—		—		(2,168		)	2,168
Comprehensive income (loss)	$	22,769	$	18,537	$	26,235	$	2,684	$	(47,456	)	$	22,769

	For the three months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	10,914		$	14,655		$	18,455	$	6,682	$	(39,792	)	$	10,914
Market value adjustment to interest rate swap	(4,016		)	(4,016		)	—		—		4,016			(4,016		)
Comprehensive income (loss)	$	6,898		$	10,639		$	18,455	$	6,682	$	(35,776	)	$	6,898

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia  Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors			Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	(2,007	)	$	(4,320	)	$	44,484	$	3,345		$	(43,509	)	$	(2,007	)
Foreign currency translation adjustment	(83		)	—			—		(83		)	83			(83		)
Market value adjustment to interest rate swap	2,717			2,717			—		—			(2,717		)	2,717
Comprehensive income (loss)	$	627		$	(1,603	)	$	44,484	$	3,262		$	(46,143	)	$	627

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP  (the Issuer)			Guarantors		Non- Guarantors		Consolidating adjustments			Columbia Property Trust (Consolidated)
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$	42,045		$	50,934		$	39,786	$	29,427	$	(120,147	)	$	42,045
Market value adjustment to interest rate swap	(3,408		)	(3,408		)	—		—		3,408			(3,408		)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	38,637			47,526			39,786		29,427		(116,739		)	38,637
Comprehensive income attributable to noncontrolling interests	—			—			—		4		—			4
Comprehensive income (loss)	$	38,637		$	47,526		$	39,786	$	29,431	$	(116,739	)	$	38,641

Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2013
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(41,902	)	$	96,132		$	48,091		$	102,321
Cash flows from investing activities:
Net proceeds from sale of real estate	—			65,928			—			—			65,928
Investment in real estate and related assets	—			(3,355		)	(12,007		)	(16,949		)	(32,311		)
Net cash provided by (used in) investing activities	—			62,573			(12,007		)	(16,949		)	33,617
Cash flows from financing activities:
Borrowings, net of fees	—			119,801			—			(41		)	119,760
Repayments	—			(111,000		)	—			(1,227		)	(112,227		)
Issuance of common stock, net of redemptions and fees	(32,328		)	—			—			—			(32,328		)
Distributions	(103,030		)	—			—			—			(103,030		)
Intercompany transfers, net	136,389			(30,808		)	(77,503		)	(28,078		)	—
Net cash provided by (used in) financing activities	1,031			(22,007		)	(77,503		)	(29,346		)	(127,825		)
Net increase (decrease) in cash and cash equivalents	1,031			(1,336		)	6,622			1,796			8,113
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(103		)	(103		)
Cash and cash equivalents, beginning of period	20,914			4,822			13,673			14,248			53,657
Cash and cash equivalents, end of period	$	21,945		$	3,486		$	20,295		$	15,941		$	61,667

Consolidating Statements of Cash Flows (in thousands)

	For the six months ended June 30, 2012
	Columbia Property Trust (Parent)			Columbia Property Trust OP (the Issuer)			Guarantors			Non- Guarantors			Columbia Property Trust (Consolidated)
Cash flows from operating activities:	$	—		$	(40,251	)	$	111,220		$	62,679		$	133,648
Cash flows from investing activities:
Net proceeds from sale of real estate	—			57,747			—			—			57,747
Investment in real estate and related assets	—			(883		)	(12,369		)	(17,026		)	(30,278		)
Net cash provided by (used in) investing activities	—			56,864			(12,369		)	(17,026		)	27,469
Cash flows from financing activities:
Borrowings, net of fees	—			475,888			—			—			475,888
Repayments	—			(456,000		)	—			(34,998		)	(490,998		)
Issuance of common stock, net of redemptions and fees	11,466			—			—			—			11,466
Distributions	(135,984		)	—			—			(15		)	(135,999		)
Intercompany transfers	149,143			(42,623		)	(100,564		)	(5,956		)	—
Redemption of noncontrolling interest	—			—			—			(301		)	(301		)
Net cash provided by (used in) financing activities	24,625			(22,735		)	(100,564		)	(41,270		)	(139,944		)
Net increase (decrease) in cash and cash equivalents	24,625			(6,122		)	(1,713		)	4,383			21,173
Effect of foreign exchange rate on cash and cash equivalents	—			—			—			(23		)	(23		)
Cash and cash equivalents, beginning of period	11,291			10,597			9,134			8,446			39,468
Cash and cash equivalents, end of period	$	35,916		$	4,475		$	7,421		$	12,806		$	60,618

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Assets Held for Sale and Discontinued Operations (Tables)

6 Months Ended

Jun. 30, 2013

Discontinued Operation, Additional Disclosures [Abstract]

Schedule of revenues and expenses of the above-described discontinued operations

The following table shows the revenues and expenses of the above-described discontinued operations (in thousands):

	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Revenues:
Rental income	$	2		$	8,983		$	1,309		$	19,372
Tenant reimbursements	7			505			184			1,419
	9			9,488			1,493			20,791
Expenses:
Property operating costs	7			3,131			184			6,613
Asset and property management fees	—			674			223			1,373
Depreciation	—			2,250			375			4,490
Amortization	—			1,208			37			2,545
General and administrative	(119		)	(837		)	828			(351		)
Total expenses	(112		)	6,426			1,647			14,670
Real estate operating income (loss)	121			3,062			(154		)	6,121
Other income (expense):
Interest expense	—			(568		)	—			(1,143		)
Interest and other income	—			—			3			—
Operating income (loss) from discontinued operations	121			2,494			(151		)	4,978
Gain on disposition of discontinued operations	—			62			10,014			16,947
Income from discontinued operations	$	121		$	2,556		$	9,863		$	21,925

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Narratives) (Details) (USD $)	Jun. 30, 2013
Guarantor Obligations [Line Items]
Ownership percentage of wholly owned subsidiary	100.00%
$450 Million Term Loan | Term Loans
Guarantor Obligations [Line Items]
Number of subsidiaries as guarantors	4
Debt face amount	$ 450,000,000

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Summary of Significant Accounting Policies (Schedule of Future Amortization for Below-Market Lease Assets) (Details) (Below-Market Lease Assets, USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Below-Market Lease Assets
For the years ending December 31:
For the nine months ended December 31, 2013	$ 1,034
2014	2,069
2015	2,069
2016	2,069
2017	2,069
2018	2,069
Thereafter	87,794
Future amortization expense	$ 99,173

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Supplemental Disclosures of Noncash Investing and Financing Activities (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Cash Flow Information [Abstract]
Other assets assumed at acquisition	$ 741	$ 0
Other liabilities assumed at acquisition	741	0
Other liabilities settled at disposition	872	0
Interest accruing to notes payable	159	152
Amortization of discounts (premiums) on debt	(304)	193
Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	2,717	(3,408)
Accrued capital expenditures and deferred lease costs	13,408	5,432
Accrued deferred financing costs	0	10
Accrued offering costs	6	0
Accrued redemptions of common stock	2,079	1,216
Increase in redeemable common stock	$ 22,226	$ 38,308

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$ 20,601	$ 10,914	$ (2,007)	$ 42,045
Foreign currency translation adjustment	0	0	(83)	0
Market value adjustment to interest rate swap	2,168	(4,016)	2,717	(3,408)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	22,769	6,898	627	38,637
Comprehensive income attributable to noncontrolling interests	0	0	0	4
Comprehensive income	22,769	6,898	627	38,641
Columbia Property Trust (Parent)
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	20,601	10,914	(2,007)	42,045
Foreign currency translation adjustment			(83)
Market value adjustment to interest rate swap	2,168	(4,016)	2,717	(3,408)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.				38,637
Comprehensive income attributable to noncontrolling interests				0
Comprehensive income	22,769	6,898	627	38,637
Columbia Property Trust OP (the Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	16,369	14,655	(4,320)	50,934
Foreign currency translation adjustment			0
Market value adjustment to interest rate swap	2,168	(4,016)	2,717	(3,408)
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.				47,526
Comprehensive income attributable to noncontrolling interests				0
Comprehensive income	18,537	10,639	(1,603)	47,526
Guarantors
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	26,235	18,455	44,484	39,786
Foreign currency translation adjustment			0
Market value adjustment to interest rate swap	0	0	0	0
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.				39,786
Comprehensive income attributable to noncontrolling interests				0
Comprehensive income	26,235	18,455	44,484	39,786
Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	2,684	6,682	3,345	29,427
Foreign currency translation adjustment			(83)
Market value adjustment to interest rate swap	0	0	0	0
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.				29,427
Comprehensive income attributable to noncontrolling interests				4
Comprehensive income	2,684	6,682	3,262	29,431
Consolidating adjustments
Condensed Financial Statements, Captions [Line Items]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	(45,288)	(39,792)	(43,509)	(120,147)
Foreign currency translation adjustment			83
Market value adjustment to interest rate swap	(2,168)	4,016	(2,717)	3,408
Comprehensive income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.				(116,739)
Comprehensive income attributable to noncontrolling interests				0
Comprehensive income	$ (47,456)	$ (35,776)	$ (46,143)	$ (116,739)

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Summary of Significant Accounting Policies (Schedule of Intangible Assets & Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Accumulated Amortization	$ (332,936)	$ (315,840)
Intangible Lease Origination Costs, Accumulated Amortization	(247,781)	(230,930)
Intangible lease assets, net	317,232	341,460
Intangible Lease Origination Costs, Net	186,986	206,927
Intangible Below-Market In-Place Lease Liabilities, Net	90,867	98,298
Above-Market In-Place Lease Assets
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Gross	85,204	86,696
Intangible Lease Assets, Accumulated Amortization	(57,905)	(56,259)
Intangible lease assets, net	27,299	30,437
Absorption Period Costs
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Assets, Gross	454,291	459,931
Intangible Lease Assets, Accumulated Amortization	(263,015)	(248,600)
Intangible lease assets, net	191,276	211,331
Intangible Lease Origination Costs
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Lease Origination Costs, Gross	434,767	437,857
Intangible Lease Origination Costs, Accumulated Amortization	(247,781)	(230,930)
Intangible Lease Origination Costs, Net	186,986	206,927
Intangible Below-Market In-Place Lease Liabilities
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]
Intangible Below-Market In-Place Lease Liabilities, Gross	180,459	182,624
Intangible Below-Market In-Place Lease Liabilities, Accumulated Amortization	(89,592)	(84,326)
Intangible lease assets, net	90,867
Intangible Below-Market In-Place Lease Liabilities, Net	$ 90,867	$ 98,298

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Related-Party Transactions and Agreements (Schedule of Amounts Due to Affiliates) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Due to affiliates	$ 18,006	$ 1,920
Consulting Fees
Related Party Transaction [Line Items]
Due to affiliates	15,250	0
Transition Services
Related Party Transaction [Line Items]
Due to affiliates	2,750	0
Administrative Reimbursements
Related Party Transaction [Line Items]
Due to affiliates	6	1,360
Asset and Property Management Fees
Related Party Transaction [Line Items]
Due to affiliates	$ 0	$ 560

XML

Related-Party Transactions and Agreements (Tables)

6 Months Ended

Jun. 30, 2013

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The detail of amounts due to WREF and its affiliates as of June 30, 2013 and December 31, 2012 (in thousands) are provided below:

	June 30, 2013		December 31, 2012
Consulting fees	$	15,250	$	—
Transition services	2,750		—
Administrative reimbursements	6		1,360
Asset and property management fees	—		560
Total	$	18,006	$	1,920

Pursuant to the terms of the agreements described above, Columbia Property Trust incurred the following related-party costs for the three and six months endedJune 30, 2013 and 2012, respectively (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Investor services	$	278	$	—	$	369	$	—
Administrative reimbursements, net(1)	70		2,839		1,891		5,591
Other	20		—		69		—
Consulting fees(2)	—		—		25,417		—
Transition services(3)	—		—		5,750		—
Asset management fees	—		8,125		5,083		16,250
Property management fees	—		1,053		523		2,279
Construction fees(4)	—		20		139		61
Total	$	368	$	12,037	$	39,241	$	24,181

⁽¹⁾ Administrative reimbursements are presented net of reimbursements from tenants of approximately $1.1 million for the three months ended June 30, 2012 and approximately $0.7 million and $2.2 million for the six months ended June 30, 2013 and 2012, respectively.

⁽²⁾  $10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million will be paid ratably over the remainder of 2013.

⁽³⁾  $3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million will be paid in the third quarter of 2013; and the remaining $1.3 million will be paid in the fourth quarter of 2013.

⁽⁴⁾  Construction fees are capitalized to real estate assets as incurred.

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Consolidated Statements of Equity (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Cumulative Distributions in Excess of Earnings	Redeemable Common Stock	Other Comprehensive Income (Loss)	Total Columbia Property Trust, Inc. Stockholders' Equity	Nonredeemable Noncontrolling Interests
Balance, value at beginning of period at Dec. 31, 2011	$ 3,346,972	$ 5,462	$ 4,880,806	$ (1,426,550)	$ (113,147)	$ 84	$ 3,346,655	$ 317
Balance, shares at beginning of period at Dec. 31, 2011		546,198,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, shares		8,796,000
Issuance of common stock, value	62,722	88	62,634				62,722
Redemptions of common stock, shares		(7,735,000)
Redemptions of common stock, value	(50,832)	(77)	(50,755)				(50,832)
Increase in redeemable common stock	(38,308)				(38,308)		(38,308)
Distributions to common stockholders	(135,984)			(135,984)			(135,984)
Distributions to noncontrolling interests	(15)							(15)
Acquisition of noncontrolling interest in consolidated joint ventures	(301)		5				5	(306)
Net income attributable to common stockholders of Columbia Property Trust, Inc.	42,045			42,045			42,045
Foreign currency translation adjustment	0
Net income attributable to noncontrolling interests	4							4
Market value adjustment to interest rate swap	(3,408)					(3,408)	(3,408)
Balance, value at end of period at Jun. 30, 2012	3,222,895	5,473	4,892,690	(1,520,489)	(151,455)	(3,324)	3,222,895	0
Balance, shares at end of period at Jun. 30, 2012		547,259,000
Balance, value at beginning of period at Dec. 31, 2012	3,163,980	5,476	4,897,782	(1,634,531)	(99,526)	(5,221)
Balance, shares at beginning of period at Dec. 31, 2012	547,603,642	547,604,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, shares		6,629,000
Issuance of common stock, value	46,402	66	46,336
Redemptions of common stock, shares		(11,945,000)
Redemptions of common stock, value	(77,033)	(119)	(76,914)
Increase in redeemable common stock	(22,226)				(22,226)
Distributions to common stockholders	(103,030)			(103,030)
Offering costs	(127)		(127)
Net income attributable to common stockholders of Columbia Property Trust, Inc.	(2,007)			(2,007)
Foreign currency translation adjustment	(83)					(83)
Net income attributable to noncontrolling interests	0
Market value adjustment to interest rate swap	2,717					2,717
Balance, value at end of period at Jun. 30, 2013	$ 3,008,593	$ 5,423	$ 4,867,077	$ (1,739,568)	$ (121,752)	$ (2,587)
Balance, shares at end of period at Jun. 30, 2013	542,288,114	542,288,000

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Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities:
Net income (loss)	$ (2,007)	$ 42,049
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Straight-line rental income	(13,121)	(845)
Depreciation	61,235	60,357
Amortization	43,100	53,330
Impairment losses on real estate assets	16,867	0
Noncash interest expense	1,720	1,897
Gain on interest rate swaps	(3,461)	(527)
Gain on sale of discontinued operations	(10,014)	(16,947)
Changes in assets and liabilities, net of acquisitions:
Decrease in tenant receivables, net	5,872	2,164
Decrease (increase) in prepaid expenses and other assets	(3,989)	2,257
Decrease in accounts payable and accrued expenses	(4,422)	(3,000)
Increase (decrease) in due to affiliates	16,205	(1,744)
Decrease in deferred income	(5,664)	(5,343)
Net cash provided by operating activities	102,321	133,648
Cash Flows from Investing Activities:
Net proceeds from the sale of real estate	65,928	57,747
Investment in real estate	(22,495)	(14,439)
Deferred lease costs paid	(9,816)	(15,839)
Net cash provided by investing activities	33,617	27,469
Cash Flows from Financing Activities:
Financing costs paid	(240)	(3,112)
Proceeds from lines of credit and notes payable	120,000	479,000
Repayments of lines of credit and notes payable	(112,227)	(490,998)
Issuance of common stock	46,402	62,722
Redemptions of common stock	(78,609)	(51,256)
Distributions paid to stockholders	(56,628)	(73,262)
Distributions paid to stockholders and reinvested in shares of our common stock	(46,402)	(62,722)
Offering costs paid	(121)	0
Redemption of noncontrolling interest	0	(301)
Distributions paid to nonredeemable noncontrolling interests	0	(15)
Net cash used in financing activities	(127,825)	(139,944)
Net increase in cash and cash equivalents	8,113	21,173
Effect of foreign exchange rate on cash and cash equivalents	(103)	(23)
Cash and cash equivalents, beginning of period	53,657	39,468
Cash and cash equivalents, end of period	$ 61,667	$ 60,618

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Real Estate and Other Transactions

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Real Estate and Other Transactions

Real Estate and Other Transactions

Acquisitions

Columbia Property Trust did not acquire any real properties during the six months ended June 30, 2013.

As described in Note 1, Organization, Columbia Property Trust acquired Columbia Property Trust Advisory Services and Columbia Property Trust Services on February 28, 2013. The following unaudited pro forma statements of operations presented for the six months ended June 30, 2013 and the three and six months endedJune 30, 2012 have been prepared for Columbia Property Trust to give effect to the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services as if the acquisitions occurred on January 1, 2012. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services been consummated as of January 1, 2012 (in thousands).

	Three months ended June 30,		Six months ended June 30,
	2012		2013		2012
Revenues	$	142,775	$	296,244	$	286,076
Net income attributable to common stockholders	$	18,919	$	31,770	$	23,719

Dispositions

On March 21, 2013, Columbia Property Trust closed on the sale of the Dvintsev Business Center - Tower B building in Moscow, Russia and its holding entity, Landlink Ltd., which was 100% owned by Columbia Property Trust, for $67.5 million, exclusive of transaction costs, resulting in a gain on disposition of discontinued operations in the accompanying consolidated statement of operations of $10.0 million.

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Organization

6 Months Ended

Jun. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Columbia Property Trust, Inc. ("Columbia Property Trust") is a Maryland corporation that operates in a manner as to qualify as a real estate investment trust ("REIT") for federal income tax purposes and engages in the acquisition and ownership of commercial real estate properties, including properties that have operating histories, are newly constructed, or are under construction. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, develops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through joint ventures. References to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect, and consolidated joint ventures.

Columbia Property Trust typically invests in high-quality, income-generating office properties leased to creditworthy companies and governmental entities. As of June 30, 2013, Columbia Property Trust owned controlling interests in 60 office properties and one hotel, which includes 82operational buildings. These properties are comprised of approximately 20.8 million square feet of commercial space and are located in 19 states and the District of Columbia. As of June 30, 2013, 59 of the office properties were wholly owned and the remaining property was owned through a consolidated subsidiary; the office properties were approximately 93.0% leased.

From inception through February 27, 2013, Columbia Property Trust operated as an externally advised REIT pursuant to an advisory agreement under which a subsidiary of Wells Real Estate Funds ("WREF"), Columbia Property Trust Advisory Services, LLC ("Columbia Property Trust Advisory Services"), performed certain key functions on behalf of Columbia Property Trust, including, among others, managing the day-to-day operations, investing capital proceeds, and arranging financings. Also during this period of time, a subsidiary of WREF, Columbia Property Trust Services, LLC ("Columbia Property Trust Services"), provided the personnel necessary to carry out property management services on behalf of Wells Management Company, Inc. ("Wells Management") and its affiliates pursuant to a property management agreement. The advisory agreement and property management agreement are described in Note 8, Related-Party Transactions and Agreements. 

On February 28, 2013, Columbia Property Trust became a self-managed company by terminating the above-mentioned advisory agreement and property management agreement, and acquiring Columbia Property Trust Advisory Services and Columbia Property Trust Services. As a result, the contractual services described above are now performed by employees of Columbia Property Trust (except for certain investor services). Contemporaneous with this transaction, Columbia Property Trust entered into a consulting agreement and an investor services agreement with WREF for the remainder of 2013. While no fees were paid to execute these acquisitions, Columbia Property Trust will pay fees to WREF for consulting and investor services for the remainder of 2013. For additional details about this transaction and the related agreements, please refer to Note 8, Related-Party Transactions and Agreements.

At present, Columbia Property Trust is preparing for a stockholder liquidity event and believes that listing on a national exchange will provide the most flexible means by which to maximize its long-term value. Thus, Columbia Property Trust is taking steps to position the company to be able to list its shares later this year, should market conditions support that strategy. In the event that Columbia Property Trust's stock is not listed on a national securities exchange by October 2015, Columbia Property Trust must either seek stockholder approval to extend or amend this listing deadline or seek stockholder approval to begin liquidating investments and distributing the resulting proceeds to the stockholders. If Columbia Property Trust seeks stockholder approval to extend or amend this listing date and does not obtain it, Columbia Property Trust would then be required to seek stockholder approval to liquidate. In this circumstance, if Columbia Property Trust seeks and does not obtain approval to liquidate, Columbia Property Trust would not be required to list or liquidate and could continue to operate indefinitely as an unlisted company.

From December 2003 through June 2010, Columbia Property Trust raised proceeds through three uninterrupted public offerings of shares of its common stock. Through July 7, 2013, Columbia Property Trust offered shares of its common stock to its current investors through its distribution reinvestment plan ("DRP") pursuant to a registration statement on Form S-3. As of June 30, 2013, Columbia Property Trust had raised gross offering proceeds from the sale of common stock under its public offerings of approximately $6.2 billion. After deductions from such gross offering proceeds for selling commissions and dealer-manager fees of approximately $509.5 million, acquisition fees of approximately $116.8 million, other organization and offering expenses of approximately $76.1 million, and common stock redemptions pursuant to its share redemption program (the "SRP") of approximately $774.3 million, Columbia Property Trust had received aggregate net offering proceeds of approximately $4.7 billion. Substantially all of Columbia Property Trust's net offering proceeds have been invested in real estate. In preparation for listing, Columbia Property Trust terminated the SRP effective July 31, 2013.

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Related-Party Transactions and Agreements (Narratives) (Details) (USD $)	3 Months Ended		6 Months Ended						1 Months Ended	6 Months Ended		3 Months Ended				6 Months Ended	14 Months Ended	6 Months Ended			3 Months Ended				6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 WREAS II	Jun. 30, 2013 Wells Management	Jun. 30, 2013 Maximum WREAS II	Jun. 30, 2013 Transitional Services Agreement WREF Monthly_Installment_Payments	Dec. 31, 2012 Amended to Transition Services Agreement WREF	Jun. 30, 2013 General and Administrative Expense Maximum WREAS II	Jun. 30, 2013 Personnel Expenses Maximum WREAS II	Jun. 30, 2013 Acquisition Fees	Mar. 31, 2013 Acquisition Fees	Jun. 30, 2012 Acquisition Fees	Mar. 31, 2012 Acquisition Fees	Jun. 30, 2013 Acquisition Fees WREAS II	Sep. 30, 2012 Acquisition Fees WREAS II	Jun. 30, 2013 Real Estate Commissions Maximum WREAS II	Jun. 30, 2013 Organization and Offering Costs Maximum WREAS II	Jun. 30, 2013 Occupancy Costs Initial Term Advisory WREF	Jun. 30, 2013 Leasing Commissions	Mar. 31, 2013 Leasing Commissions	Jun. 30, 2012 Leasing Commissions	Mar. 31, 2012 Leasing Commissions	Jun. 30, 2013 Leasing Commissions Wells Management
Related Party Transaction [Line Items]
Monthly management fee percent of gross cost					0.05208%
Threshold percent of gross offering proceeds for reimbursement																2.00%			2.00%
Monthly management fee							$ 2,500,000
Annual management fees							30,500,000
Acquisitions fees percent of purchase price																	1.00%
Related Party Transaction, Acquisitions Fees							1,500,000
Related Party Transaction, Acquisitions Fees Paid					1,500,000
Limitation on reimbursed expenses										18,200,000	10,000,000
Real estate commission percent of sales price of each property																		0.30%
Monthly payments under agreement								500,000												42,000
Related Party Transaction, Terms of Agreement, Reimbursement Obligation, Maximum								250,000
Related Party Transaction, Advisory Services Assignment Option Paid								0
Related Party Transaction, Amount Payable Under Agreement								6,000,000	2,800,000
Maximum Lease Term for Leasing Commissions Payable																									10 years
Related Party Transaction, Terms of Agreement, Monthly Installments								12
Leasing concession percent of all build-out funds						5.00%
Total related-party costs	$ 368,000	$ 12,037,000	$ 39,241,000	$ 24,181,000								$ 0	$ 0	$ 0	$ 0						$ 0	$ 0	$ 0	$ 0

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Organization (Details) (USD $)	6 Months Ended		115 Months Ended
	Jun. 30, 2013 States Buildings sqft	Jun. 30, 2012	Jun. 30, 2013 Offering States Buildings sqft
Real Estate
Number of operational buildings	82		82
Square feet of commercial space	20,800,000		20,800,000
Number of states with properties	19		19
Percent of leased office space of owned properties	93.00%		93.00%
Number of uninterrupted public offerings of shares of common stock			3
Initial Public Offering
Proceeds under the initial public offering	$ 6,200,000,000		$ 6,200,000,000
Net offering proceeds from issuance of common stock	46,402,000	62,722,000	4,700,000,000
Commissions and Dealer-Manager Fees
Initial Public Offering
Stock issuance fees			509,500,000
Acquisition Fees
Initial Public Offering
Stock issuance fees			116,800,000
Other Offering Expenses
Initial Public Offering
Stock issuance fees			76,100,000
Common Stock Redemptions
Initial Public Offering
Stock issuance fees			$ 774,300,000
Office Building
Real Estate
Number of real estate properties	60		60
Hotel
Real Estate
Number of real estate properties	1		1
Wholly Owned Properties
Real Estate
Number of real estate properties	59		59

XML

Summary of Significant Accounting Policies (Schedule of Recognized Amortization) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Above-Market In-Place Lease Assets
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 1,453	$ 2,254	$ 3,138	$ 4,688
Absorption Period Costs
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	9,919	12,608	20,054	25,980
Intangible Lease Origination Costs
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	10,017	10,498	19,941	21,145
Intangible Below-Market In-Place Lease Liabilities
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 3,705	$ 4,174	$ 7,431	$ 8,415

XML

Line of Credit and Notes Payable (Schedule of Long-Term Debt (excluding Bonds Payable)) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Line of credit and notes payable	$ 1,409,245	$ 1,401,618
Term Loans | $450 Million Term Loan
Debt Instrument [Line Items]
Line of credit and notes payable	450,000	450,000
Mortgage Notes | Market Square Buildings mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	325,000	325,000
Mortgage Notes | 333 Market Street Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	207,936	208,308
Mortgage Notes | 100 East Pratt Street Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	105,000	105,000
Mortgage Notes | Wildwood Buildings mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	90,000	90,000
Mortgage Notes | 263 Shuman Boulevard mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	49,000	49,000
Mortgage Notes | SanTan Corporate Center mortgage notes
Debt Instrument [Line Items]
Line of credit and notes payable	39,000	39,000
Mortgage Notes | One Glenlake Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	35,977	37,204
Mortgage Notes | Three Glenlake Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	26,423	26,264
Mortgage Notes | 215 Diehl Road Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	21,000	21,000
Mortgage Notes | 544 Lakeview Building mortgage note
Debt Instrument [Line Items]
Line of credit and notes payable	8,909	8,842
Credit Facilities | JPMorgan Chase Credit Facility
Debt Instrument [Line Items]
Line of credit and notes payable	$ 51,000	$ 42,000

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities:	$ 102,321	$ 133,648
Cash flows from investing activities:
Net proceeds from the sale of real estate	65,928	57,747
Investment in real estate and related assets	(32,311)	(30,278)
Net cash provided by investing activities	33,617	27,469
Cash flows from financing activities:
Borrowings, net of fees	119,760	475,888
Repayments	(112,227)	(490,998)
Issuance of common stock, net of redemptions and fees	(32,328)	11,466
Distributions	(103,030)	(135,999)
Intercompany transfers, net	0	0
Redemption of noncontrolling interest	0	(301)
Net cash used in financing activities	(127,825)	(139,944)
Net increase (decrease) in cash and cash equivalents	8,113	21,173
Effect of foreign exchange rate on cash and cash equivalents	(103)	(23)
Cash and cash equivalents, beginning of period	53,657	39,468
Cash and cash equivalents, end of period	61,667	60,618
Columbia Property Trust (Parent)
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities:	0	0
Cash flows from investing activities:
Net proceeds from the sale of real estate	0	0
Investment in real estate and related assets	0	0
Net cash provided by investing activities	0	0
Cash flows from financing activities:
Borrowings, net of fees	0	0
Repayments	0	0
Issuance of common stock, net of redemptions and fees	(32,328)	11,466
Distributions	(103,030)	(135,984)
Intercompany transfers, net	136,389	149,143
Redemption of noncontrolling interest		0
Net cash used in financing activities	1,031	24,625
Net increase (decrease) in cash and cash equivalents	1,031	24,625
Effect of foreign exchange rate on cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	20,914	11,291
Cash and cash equivalents, end of period	21,945	35,916
Columbia Property Trust OP (the Issuer)
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities:	(41,902)	(40,251)
Cash flows from investing activities:
Net proceeds from the sale of real estate	65,928	57,747
Investment in real estate and related assets	(3,355)	(883)
Net cash provided by investing activities	62,573	56,864
Cash flows from financing activities:
Borrowings, net of fees	119,801	475,888
Repayments	(111,000)	(456,000)
Issuance of common stock, net of redemptions and fees	0	0
Distributions	0	0
Intercompany transfers, net	(30,808)	(42,623)
Redemption of noncontrolling interest		0
Net cash used in financing activities	(22,007)	(22,735)
Net increase (decrease) in cash and cash equivalents	(1,336)	(6,122)
Effect of foreign exchange rate on cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	4,822	10,597
Cash and cash equivalents, end of period	3,486	4,475
Guarantors
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities:	96,132	111,220
Cash flows from investing activities:
Net proceeds from the sale of real estate	0	0
Investment in real estate and related assets	(12,007)	(12,369)
Net cash provided by investing activities	(12,007)	(12,369)
Cash flows from financing activities:
Borrowings, net of fees	0	0
Repayments	0	0
Issuance of common stock, net of redemptions and fees	0	0
Distributions	0	0
Intercompany transfers, net	(77,503)	(100,564)
Redemption of noncontrolling interest		0
Net cash used in financing activities	(77,503)	(100,564)
Net increase (decrease) in cash and cash equivalents	6,622	(1,713)
Effect of foreign exchange rate on cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	13,673	9,134
Cash and cash equivalents, end of period	20,295	7,421
Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities:	48,091	62,679
Cash flows from investing activities:
Net proceeds from the sale of real estate	0	0
Investment in real estate and related assets	(16,949)	(17,026)
Net cash provided by investing activities	(16,949)	(17,026)
Cash flows from financing activities:
Borrowings, net of fees	(41)	0
Repayments	(1,227)	(34,998)
Issuance of common stock, net of redemptions and fees	0	0
Distributions	0	(15)
Intercompany transfers, net	(28,078)	(5,956)
Redemption of noncontrolling interest		(301)
Net cash used in financing activities	(29,346)	(41,270)
Net increase (decrease) in cash and cash equivalents	1,796	4,383
Effect of foreign exchange rate on cash and cash equivalents	(103)	(23)
Cash and cash equivalents, beginning of period	14,248	8,446
Cash and cash equivalents, end of period	$ 15,941	$ 12,806

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Assets Held for Sale and Discontinued Operations (Schedule of Revenue and Expenses from Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Rental income	$ 2	$ 8,983	$ 1,309	$ 19,372
Tenant reimbursements	7	505	184	1,419
Revenues	9	9,488	1,493	20,791
Expenses:
Property operating costs	7	3,131	184	6,613
Asset and property management fees	0	674	223	1,373
Depreciation	0	2,250	375	4,490
Amortization	0	1,208	37	2,545
General and administrative	(119)	(837)	828	(351)
Total expenses	(112)	6,426	1,647	14,670
Real estate operating income (loss)	121	3,062	(154)	6,121
Other income (expense):
Interest expense	0	(568)	0	(1,143)
Interest and other income	0	0	3	0
Operating income (loss) from discontinued operations	121	2,494	(151)	4,978
Gain on disposition of discontinued operations	0	62	10,014	16,947
Income from discontinued operations	$ 121	$ 2,556	$ 9,863	$ 21,925

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Consolidated Balance Sheets Parentheticals (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Building and improvements, accumulated depreciation	$ 635,280	$ 580,334
Intangible lease assets, accumulated amortization	332,936	315,840
Allowance for doubtful accounts	892	117
Deferred financing costs, accumulated amortization	10,081	8,527
Intangible lease origination costs, accumulated amortization	247,781	230,930
Deferred lease costs, accumulated amortization	29,119	24,222
Bonds payable, discount	1,196	1,322
Intangible lease liabilities, accumulated amortization	$ 89,592	$ 84,326
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	542,288,114	547,603,642
Common stock, shares outstanding	542,288,114	547,603,642

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2013

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 Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of June 30, 2013, no such options have been exercised that had not been materially satisfied.

Litigation

Columbia Property Trust is subject to various legal proceedings, claims and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations or financial condition of Columbia Property Trust.

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Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to the common stockholders of Columbia Property Trust, Inc.	$ 20,601	$ 10,914	$ (2,007)	$ 42,045
Foreign currency translation adjustment realized in discontinued operations	0	0	(83)	0
Market value adjustment to interest rate swap	2,168	(4,016)	2,717	(3,408)
Comprehensive income attributable to the common stockholders of Columbia Property Trust, Inc.	22,769	6,898	627	38,637
Comprehensive income attributable to noncontrolling interests	0	0	0	4
Comprehensive income	$ 22,769	$ 6,898	$ 627	$ 38,641

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Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets:
Land	$ 786,336	$ 789,237
Buildings and improvements, less accumulated depreciation of $635,280 and $580,334, as of June 30, 2013 and December 31, 2012, respectively	3,370,152	3,468,218
Intangible lease assets, less accumulated amortization of $332,936 and $315,840, as of June 30, 2013 and December 31, 2012, respectively	317,232	341,460
Construction in progress	6,781	12,680
Total real estate assets	4,480,501	4,611,595
Cash and cash equivalents	61,667	53,657
Tenant receivables, net of allowance for doubtful accounts of $892 and $117, as of June 30, 2013 and December 31, 2012, respectively	139,473	134,099
Prepaid expenses and other assets	33,208	29,373
Deferred financing costs, less accumulated amortization of $10,081 and $8,527, as of June 30, 2013 and December 31, 2012, respectively	8,952	10,490
Intangible lease origination costs, less accumulated amortization of $247,781 and $230,930, as of June 30, 2013 and December 31, 2012, respectively	186,986	206,927
Deferred lease costs, less accumulated amortization of $29,119 and $24,222, as of June 30, 2013 and December 31, 2012, respectively	106,652	98,808
Investment in development authority bonds	586,000	586,000
Total assets	5,603,439	5,730,949
Liabilities:
Line of credit and notes payable	1,409,245	1,401,618
Bonds payable, net of discount of $1,196 and $1,322, as of June 30, 2013 and December 31, 2012, respectively	248,804	248,678
Accounts payable, accrued expenses, and accrued capital expenditures	97,929	102,858
Due to affiliates	18,006	1,920
Deferred income	22,243	28,071
Intangible lease liabilities, less accumulated amortization of $89,592 and $84,326, as of June 30, 2013 and December 31, 2012, respectively	90,867	98,298
Obligations under capital leases	586,000	586,000
Total liabilities	2,473,094	2,467,443
Commitments and Contingencies (Note 6)
Redeemable Common Stock	121,752	99,526
Equity:
Common stock, $0.01 par value, 900,000,000 shares authorized, 542,288,114 and 547,603,642 shares issued and outstanding as of June 30, 2013 and December 31, 2012, respectively	5,423	5,476
Additional paid-in capital	4,867,077	4,897,782
Cumulative distributions in excess of earnings	(1,739,568)	(1,634,531)
Redeemable common stock	(121,752)	(99,526)
Other comprehensive loss	(2,587)	(5,221)
Total equity	3,008,593	3,163,980
Total liabilities, redeemable common stock, and equity	$ 5,603,439	$ 5,730,949

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Subsequent Event (Details) (Mortgage Notes, Three Glenlake Building mortgage note, Subsequent Event, USD $) In Millions, unless otherwise specified	0 Months Ended
	Jul. 31, 2013
Mortgage Notes | Three Glenlake Building mortgage note | Subsequent Event
Subsequent Event [Line Items]
Repayment of mortgage note	$ 26.4

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Summary of Significant Accounting Policies (Narratives) (Details) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended		3 Months Ended		6 Months Ended			6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Properties	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Building	Jun. 30, 2013 Site Improvements	Jun. 30, 2013 Below-Market Lease Assets	Mar. 31, 2012 Below-Market Lease Assets	Jun. 30, 2013 Below-Market Lease Assets	Jun. 30, 2012 Below-Market Lease Assets	Dec. 31, 2012 Below-Market Lease Assets	Jun. 30, 2013 Minimum Building Improvements	Jun. 30, 2013 Maximum Building Improvements	Jun. 30, 2012 Fair Value, Inputs, Level 3	Jun. 30, 2013 120 Eagle Rock Fair Value, Inputs, Level 3	Jun. 30, 2013 333 & 777 Republic Drive Fair Value, Inputs, Level 3
Significant Accounting Policies [Line Items]
Estimated useful life of real estate assets (in years)						40 years	15 years						5 years	25 years
Number of properties			18
Impairment losses on real estate assets	$ 0	$ 0	$ 16,867,000	$ 0											$ 0	$ 11,708,000	$ 5,159,000
Real estate held for sale, number of properties			0
Gross intangible assets								110,700,000		110,700,000		110,700,000
Amortization of intangible assets			43,100,000	53,330,000				500,000	500,000	1,000,000	1,000,000
Fair value of interest rate swaps	$ (12,200,000)		$ (12,200,000)		$ (18,400,000)
Requirement to distribute taxable income (percent)	90.00%		90.00%
Limit on investments in taxable real estate investment trusts (percent)	25.00%		25.00%

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Line of Credit and Notes Payable (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Schedule of line of credit and notes payable indebtedness outstanding

As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following line of credit and notes payable indebtedness outstanding (excluding bonds payable; see Note 5, Bonds Payable) in thousands:

Facility	June 30, 2013		December 31, 2012
$450 Million Term Loan	$	450,000	$	450,000
Market Square Buildings mortgage note	325,000		325,000
333 Market Street Building mortgage note	207,936		208,308
100 East Pratt Street Building mortgage note	105,000		105,000
Wildwood Buildings mortgage note	90,000		90,000
JPMorgan Chase Credit Facility	51,000		42,000
263 Shuman Boulevard Building mortgage note	49,000		49,000
SanTan Corporate Center mortgage notes	39,000		39,000
One Glenlake Building mortgage note	35,977		37,204
Three Glenlake Building mortgage note	26,423		26,264
215 Diehl Road Building mortgage note	21,000		21,000
544 Lakeview Building mortgage note	8,909		8,842
Total indebtedness	$	1,409,245	$	1,401,618

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Assets Held for Sale and Discontinued Operations (Narratives) (Details) (USD $)	6 Months Ended		1 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012 Nine-Property Sale	Jan. 31, 2012 5995 Opus Parkway and Emerald Point
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from the sale of real estate	$ 65,928,000	$ 57,747,000	$ 260,500,000	$ 60,100,000
Gain on extinguishment of debt			$ 3,200,000	$ 16,900,000

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Bonds Payable (Narratives) (Details) (USD $)			12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011 Bonds Payable	Jun. 30, 2013 Bonds Payable 2018 Bonds Payable	Dec. 31, 2011 Bonds Payable 2018 Bonds Payable	Jun. 30, 2013 Fair Value, Inputs, Level 2 Bonds Payable 2018 Bonds Payable	Dec. 31, 2012 Fair Value, Inputs, Level 2 Bonds Payable 2018 Bonds Payable
Debt Instrument [Line Items]
Face amount of issued debt instrument					$ 250,000,000.0
Maturity period of debt instrument (in years)			7 years
Interest rate for debt instrument (percent)					5.875%
Discount rate of face value of issued debt instrument (in percent)					99.295%
Net proceeds received from issuance of bonds payable					246,700,000
Frequency of interest payments				semi-annual
Initial issuance discount of bonds payable	1,196,000	1,322,000			1,800,000
Maturity date				Apr. 01, 2018
Interest payments				7,300,000
Estimated fair value of debt instrument						$ 251,000,000	$ 250,900,000

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Summary of Significant Accounting Policies (Additional Information for Interest Rate Swaps) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Interest Rate Contract Accounts Payable	Dec. 31, 2012 Interest Rate Contract Accounts Payable
Derivative, Fair Value, Net [Abstract]
Derivative designated as hedging instruments					$ (2,587)	$ (5,305)
Derivatives not designated as hedging instruments					(9,648)	(13,109)
Summary of Derivative Instruments Impact on Results of Operations [Abstract]
Market value adjustment to interest rate swap designated as a hedge instrument included in other comprehensive income	2,168	(4,016)	2,717	(3,408)
Loss on interest rate swaps recognized through earnings			$ 221	$ (89)

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Real Estate and Other Transactions (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Business Acquisition [Line Items]
Revenues		$ 142,775,000	$ 296,244,000	$ 286,076,000
Net loss attributable to common stockholders		18,919,000	31,770,000	23,719,000
Gains on disposition of discontinued operations	0	62,000	10,014,000	16,947,000
Landlink Ltd | Dvintsev Business Center - Tower B
Business Acquisition [Line Items]
Ownership percentage of real estate	100.00%		100.00%
Net proceeds from the sale of real estate			67,500,000
Gains on disposition of discontinued operations			$ 10,000,000

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Bonds Payable

6 Months Ended

Jun. 30, 2013

Bonds Payable [Abstract]

Bonds Payable

Bonds Payable

In 2011, Columbia Property Trust issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value (the "2018 Bonds Payable"). Columbia Property Trust received proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. In the accompanying consolidated balance sheets, the 2018 Bonds Payable are shown net of the initial issuance discount of approximately $1.8 million, which is amortized to interest expense over the term of the 2018 Bonds Payable using the effective interest method. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018. Interest payments of $7.3 million were made on the 2018 Bonds Payable during the six months ended June 30, 2013. As of June 30, 2013, Columbia Property Trust believes it was in compliance with the restrictive covenants on the 2018 Bonds Payable.

The estimated fair value of the 2018 Bonds Payable as of June 30, 2013 and December 31, 2012 was approximately $251.0 million and $250.9 million, respectively. The fair value of the 2018 Bonds Payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing as the 2018 Bonds Payable arrangements as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

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Summary of Significant Accounting Policies (Schedule of Recognized Fair Value Adjustments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Loss Recognized	$ 0	$ 0	$ (16,867)	$ 0
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Loss Recognized		0
120 Eagle Rock | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Book Value	23,808		23,808
Impairment Loss Recognized			(11,708)
Fair Value	12,100		12,100
333 & 777 Republic Drive | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Book Value	13,359		13,359
Impairment Loss Recognized			(5,159)
Fair Value	$ 8,200		$ 8,200

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Related-Party Transactions and Agreements (Schedule of Related-Party Costs) (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Consulting Fees		Jun. 30, 2012 Consulting Fees		Jun. 30, 2013 Consulting Fees		Jun. 30, 2012 Consulting Fees		Jun. 30, 2013 Transition Services		Jun. 30, 2012 Transition Services		Jun. 30, 2013 Transition Services		Jun. 30, 2012 Transition Services		Jun. 30, 2013 Asset Management Fees	Jun. 30, 2012 Asset Management Fees	Jun. 30, 2013 Asset Management Fees	Jun. 30, 2012 Asset Management Fees	Jun. 30, 2013 Administrative Reimbursements, Net		Jun. 30, 2012 Administrative Reimbursements, Net		Jun. 30, 2013 Administrative Reimbursements, Net		Jun. 30, 2012 Administrative Reimbursements, Net		Jun. 30, 2013 Property Management Fees	Jun. 30, 2012 Property Management Fees	Jun. 30, 2013 Property Management Fees	Jun. 30, 2012 Property Management Fees	Jun. 30, 2013 Construction Fees		Jun. 30, 2012 Construction Fees		Jun. 30, 2013 Construction Fees		Jun. 30, 2012 Construction Fees		Jun. 30, 2013 Investor Services	Jun. 30, 2012 Investor Services	Jun. 30, 2013 Investor Services	Jun. 30, 2012 Investor Services	Jun. 30, 2013 Other	Jun. 30, 2012 Other	Jun. 30, 2013 Other	Jun. 30, 2012 Other	Jun. 30, 2013 Dealer Manager Fees	Mar. 31, 2013 Dealer Manager Fees	Jun. 30, 2012 Dealer Manager Fees	Mar. 31, 2012 Dealer Manager Fees	Jun. 30, 2013 Other Offering Expenses	Mar. 31, 2013 Other Offering Expenses	Jun. 30, 2012 Other Offering Expenses	Mar. 31, 2012 Other Offering Expenses	Jun. 30, 2013 Incentive Fees	Mar. 31, 2013 Incentive Fees	Jun. 30, 2012 Incentive Fees	Mar. 31, 2012 Incentive Fees	Jun. 30, 2013 Listing Fees	Mar. 31, 2013 Listing Fees	Jun. 30, 2012 Listing Fees	Mar. 31, 2012 Listing Fees	Jun. 30, 2013 Acquisition Fees	Mar. 31, 2013 Acquisition Fees	Jun. 30, 2012 Acquisition Fees	Mar. 31, 2012 Acquisition Fees	Jun. 30, 2013 Disposition Fee	Mar. 31, 2013 Disposition Fee	Jun. 30, 2012 Disposition Fee	Mar. 31, 2012 Disposition Fee	Jun. 30, 2013 Leasing Commissions	Mar. 31, 2013 Leasing Commissions	Jun. 30, 2012 Leasing Commissions	Mar. 31, 2012 Leasing Commissions	Jun. 30, 2013 Commissions	Mar. 31, 2013 Commissions	Jun. 30, 2012 Commissions	Mar. 31, 2012 Commissions
Related Party Transaction [Line Items]
Total related-party costs	$ 368,000	$ 12,037,000	$ 39,241,000	$ 24,181,000	$ 0	[1]	$ 0	[1]	$ 25,417,000	[1],[2]	$ 0	[1]	$ 0	[3]	$ 0	[3]	$ 5,750,000	[3]	$ 0	[3]	$ 0	$ 8,125,000	$ 5,083,000	$ 16,250,000	$ 70,000	[2]	$ 2,839,000	[2]	$ 1,891,000	[2]	$ 5,591,000	[2]	$ 0	$ 1,053,000	$ 523,000	$ 2,279,000	$ 0	[4]	$ 20,000	[4]	$ 139,000	[4]	$ 61,000	[4]	$ 278,000	$ 0	$ 369,000	$ 0	$ 20,000	$ 0	$ 69,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Tenant reimbursements		1,100,000	700,000	2,200,000
Payment for related party costs									10,200,000								3,000,000
Related party transaction, due in remainder of fiscal year									15,200,000
Related party transition services fees due in third quarter													1,500,000
Related party transition services fees due in fourth quarter													$ 1,300,000

[1] $10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million will be paid ratably over the remainder of 2013.

[2] Administrative reimbursements are presented net of reimbursements from tenants of approximately $1.1 million for the three months ended June 30, 2012 and approximately $0.7 million and $2.2 million for the six months ended June 30, 2013 and 2012, respectively.

[3] $3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million will be paid in the third quarter of 2013; and the remaining $1.3 million will be paid in the fourth quarter of 2013.

[4] Construction fees are capitalized to real estate assets as incurred.

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Related-Party Transactions and Agreements

6 Months Ended

Jun. 30, 2013

Related Party Transactions [Abstract]

Related-Party Transactions and Agreements

Related-Party Transactions and Agreements

Advisory Agreement

From December 2003 through February 28, 2013, Columbia Property Trust was party to uninterrupted advisory agreements with affiliates of WREF (the "Advisor"), pursuant to which the Advisor acted as Columbia Property Trust's external advisor and performed certain key functions on behalf of Columbia Property Trust, including, among others, the investment of capital proceeds and management of day-to-day operations (the "Advisory Agreement"). As discussed in detail below, in connection with Columbia Property Trust's transition to a self-managed structure, the most recent advisory agreement was terminated effective February 28, 2013.

Under the terms of the Advisory Agreement most recently in place, Columbia Property Trust incurred fees and reimbursements payable to the Advisor for services as described below:

• Asset management fees were incurred monthly at one-twelfth of 0.625% of the lesser of (i) gross cost, as defined, of all properties of Columbia Property Trust (other than those that failed to meet specified occupancy thresholds) and investments in joint ventures, or (ii) the aggregate value of Columbia Property Trust's interest in the properties and joint ventures as established with the most recent asset-based valuation, until the monthly payment equals $2.5 million (or $30.5 million annualized), as of the last day of each preceding month. Columbia Property Trust paid fees at the cap in January and February 2013. With respect to (ii) above, Columbia Property Trust's published net asset-based valuations did not impact asset management fees incurred due to continued applicability of the cap described above.

• Reimbursement for all costs and expenses the Advisor incurred in fulfilling its duties as the asset portfolio manager, generally included (i) wages and salaries and other employee-related expenses of the Advisor's employees, who performed a full range of real estate services for Columbia Property Trust, including management, administration, operations, and marketing, and are billed to Columbia Property Trust based on the amount of time spent on Columbia Property Trust by such personnel, provided that such expenses are not reimbursed if incurred in connection with services for which the Advisor received a disposition fee (described below) or an acquisition fee; and (ii) amounts paid for an individual retirement account, or "IRA," custodial service costs allocated to Columbia Property Trust accounts. The Advisory Agreement limited the amount of reimbursements to the Advisor of "portfolio general and administrative expenses" and "personnel expenses," as defined, to the extent they would exceed $18.2 million and $10.0 million, respectively, during 2013.

• Acquisition fees were incurred at 1.0% of property purchase price (excluding acquisition expenses); however, in no event could total acquisition fees for the calendar year exceed 2.0% of total gross offering proceeds. Columbia Property Trust also reimbursed the Advisor for expenses it paid to third parties in connection with acquisitions or potential acquisitions. Per the Transition Services Agreement discussed below, acquisition fees payable to the Advisor for 2012 and 2013 had an aggregate cap of $1.5 million. Columbia Property Trust paid acquisition fees of $1.5 million related to the acquisition on the 333 Market Street Building in San Francisco, California, in December 2012. As a result, no acquisition fees will be paid to the Advisor during 2013.

• The disposition fee payable for the sale of any property for which the Advisor provided substantial services was the lesser of (i) 0.3% or (ii) the broker fee paid to a third-party broker in connection with the sale.

• Reimbursement of organization and offering costs paid by the Advisor on behalf of Columbia Property Trust, not to exceed 2.0% of gross offering proceeds.

• For January and February 2013 Columbia Property Trust paid occupancy costs of $42,000 to the Advisor's for use of dedicated office space.

Transition Services Agreement

For the period from July 1, 2012 through December 31, 2013, Columbia Property Trust, Columbia Property Trust Advisory Services, and WREF are parties to an agreement under which WREF provides services to support the transition of Columbia Property Trust from an externally advised management platform to a self-managed structure (the "Transition Services Agreement"). Pursuant to the Transition Services Agreement, (i) WREF was required to transfer the assets and employees necessary to provide the services under the Advisory Agreement (other than investor services and property management) to Columbia Property Trust Advisory Services by January 1, 2013; provided that if WREF was not able to transfer certain assets by then, WREF was required to use its commercially reasonable best efforts to transfer such delayed assets as promptly as possible, but no later than June 30, 2013; and (ii) Columbia Property Trust had the option to acquire Columbia Property Trust Advisory Services from WREF at any time during 2013 (the "Columbia Property Trust Advisory Services Assignment Option"). The Columbia Property Trust Advisory Services Assignment Option closed as of February 28, 2013, and all assets were transferred by June 30, 2013. No payment was associated with the assignment; however, Columbia Property Trust is required to pay WREF for the work required to transfer sufficient employees, proprietary systems and processes, and assets to Columbia Property Trust Advisory Services to prepare for a successful transition to a self-managed structure a total of $6.0 million payable in 12 monthly installments of $0.5 million commencing on July 31, 2012. In addition, Columbia Property Trust and WREF will each pay half of any out-of-pocket and third-party costs and expenses incurred in connection with providing these services, provided that Columbia Property Trust's obligation to reimburse WREF for such expenses is limited to approximately $250,000 in the aggregate. Pursuant to the Transition Services Agreement at the close of the Columbia Property Trust Advisory Services Assignment Option, Columbia Property Trust entered into a consulting services agreement with WREF as described below.

On December 28, 2012, the Transition Services Agreement was amended and Wells Management and Columbia Property Trust Services were made parties to the agreement. Pursuant to the amendment, Columbia Property Trust could acquire Columbia Property Trust Services, the entity that provided personnel to carry out property management services on behalf of Wells Management and its affiliates, in connection with exercising the Columbia Property Trust Advisory Services Assignment Option.  Columbia Property Trust exercised this option on February 28, 2013. No payment was associated with this assignment; however, Columbia Property Trust is obligated to pay a fee to WREF of  approximately $2.8 million in monthly installments from July 2013 through December 2013. The fees paid under the Transition Services Agreement are included in general and administrative expense in the accompanying consolidated statement of operations. The Transition Services Agreement is terminable if there is a material breach by WREF that is not cured, or if WREF is in an insolvency proceeding. Otherwise, if Columbia Property Trust elects to terminate the agreement early, all remaining payments due under the agreement will be accelerated.

Investor Services Agreement

Columbia Property Trust and WREF entered into an investor services agreement, effective January 1, 2013 through February 28, 2013, that required WREF to provide certain investor and transfer agent support services to Columbia Property Trust, which were previously provided under the advisory agreement dated March 30, 2011 (the "Investor Services Agreement"). As the sole consideration for these services, Columbia Property Trust reimbursed WREF for expenses incurred in connection with carrying out such services, subject to the cap on "portfolio general and administrative expenses" and "personnel expenses" included in the Advisory Agreement and, thus, did not incur a separate fee.

2013 Investor Services Agreement

Effective February 28, 2013, upon the effective date of the Columbia Property Trust Advisory Services Assignment Option, Columbia Property Trust entered into an agreement with WREF, which requires WREF to provide the investor and transfer agent support services to Columbia Property Trust that were previously provided for under the Investor Services Agreement (the "2013 Investor Services Agreement"). The 2013 Investor Services Agreement requires Columbia Property Trust to compensate WREF for these services by reimbursing the related expenses and payroll costs, plus a premium.

Consulting Services Agreement

On February 28, 2013, the Columbia Property Trust Advisory Services Assignment Option and Columbia Property Trust Services Assignment Option closed, and in connection therewith, the Advisory Agreement and Investor Services Agreement terminated and Columbia Property Trust entered into a consulting services agreement with WREF (the "Consulting Services Agreement"). Under the Consulting Services Agreement, WREF will provide consulting services with respect to the same matters that the Advisor provided services under the most recently effective advisory agreement. Payments under the Consulting Services Agreement are monthly fees in the same amount as the asset management fee that would have been paid under the most recently effective advisory agreement, if the most recently effective advisory agreement was not terminated. No acquisition or disposition fees are payable under the Consulting Services Agreement. The Consulting Services Agreement will terminate on December 31, 2013. If Columbia Property Trust elects to terminate the Consulting Services Agreement early for cause, Columbia Property Trust would not be required to make further payments under the agreement other than fees earned by WREF and unpaid at the time of termination. If Columbia Property Trust terminates the Consulting Services Agreement other than for cause, Columbia Property Trust would be required to make a fee acceleration payment, which is calculated as the fees incurred in the last month prior to termination, adjusted for partial months, multiplied by the number of months remaining between the time of termination and December 31, 2013. The fees incurred under the Consulting Services Agreement are included in general and administrative expense in the accompanying consolidated statement of operations.

Property Management Agreement

Columbia Property Trust was party to master property management, leasing, and construction agreements (the "Property Management Agreement") with affiliates of WREF (the "Property Manager") until February 28, 2013, on which date Columbia Property Trust terminated the Property Management Agreement contemporaneous with acquiring Columbia Property Trust Services. As a result, property management services are now performed by employees of Columbia Property Trust. While no fee was paid to execute this acquisition, Columbia Property Trust is obligated to pay a fee to WREF totaling $2.8 million from July through December 2013 for the transition of property management services to Columbia Property Trust Services.

During January and February 2013, the Property Manager received the following fees and reimbursements in consideration for supervising the management, leasing, and construction of certain Columbia Property Trust properties:

• Property management fees in an amount equal to a percentage negotiated for each property managed by the Property Manager of the gross monthly income collected for that property for the preceding month;

• Leasing commissions for new, renewal, or expansion leases entered into with respect to any property for which the Property Manager serves as leasing agent equal to a percentage as negotiated for that property of the total base rental and operating expenses to be paid to Columbia Property Trust during the applicable term of the lease, provided, however, that no commission shall be payable as to any portion of such term beyond ten years;

• Initial lease-up fees for newly constructed properties under the agreement, generally equal to one month's rent;

• Fees equal to a specified percentage of up to 5.0% of all construction build-out funded by Columbia Property Trust, given as a leasing concession, and overseen by the Property Manager; and

• Other fees as negotiated with the addition of each specific property covered under the agreement.

Related-Party Costs

Pursuant to the terms of the agreements described above, Columbia Property Trust incurred the following related-party costs for the three and six months endedJune 30, 2013 and 2012, respectively (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2013		2012		2013		2012
Investor services	$	278	$	—	$	369	$	—
Administrative reimbursements, net(1)	70		2,839		1,891		5,591
Other	20		—		69		—
Consulting fees(2)	—		—		25,417		—
Transition services(3)	—		—		5,750		—
Asset management fees	—		8,125		5,083		16,250
Property management fees	—		1,053		523		2,279
Construction fees(4)	—		20		139		61
Total	$	368	$	12,037	$	39,241	$	24,181

⁽¹⁾ Administrative reimbursements are presented net of reimbursements from tenants of approximately $1.1 million for the three months ended June 30, 2012 and approximately $0.7 million and $2.2 million for the six months ended June 30, 2013 and 2012, respectively.

⁽²⁾  $10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million will be paid ratably over the remainder of 2013.

⁽³⁾  $3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million will be paid in the third quarter of 2013; and the remaining $1.3 million will be paid in the fourth quarter of 2013.

⁽⁴⁾  Construction fees are capitalized to real estate assets as incurred.

Columbia Property Trust incurred no related-party commissions, dealer-manager fees, offering costs, incentive fees, listing fees, acquisition fees, disposition fees, or leasing commissions during the three and six months endedJune 30, 2013 or the three and six months endedJune 30, 2012.

Due to Affiliates

The detail of amounts due to WREF and its affiliates as of June 30, 2013 and December 31, 2012 (in thousands) are provided below:

	June 30, 2013		December 31, 2012
Consulting fees	$	15,250	$	—
Transition services	2,750		—
Administrative reimbursements	6		1,360
Asset and property management fees	—		560
Total	$	18,006	$	1,920

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Line of Credit and Notes Payable

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Line of Credit and Notes Payable

Line of Credit and Notes Payable

As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following line of credit and notes payable indebtedness outstanding (excluding bonds payable; see Note 5, Bonds Payable) in thousands:

Facility	June 30, 2013		December 31, 2012
$450 Million Term Loan	$	450,000	$	450,000
Market Square Buildings mortgage note	325,000		325,000
333 Market Street Building mortgage note	207,936		208,308
100 East Pratt Street Building mortgage note	105,000		105,000
Wildwood Buildings mortgage note	90,000		90,000
JPMorgan Chase Credit Facility	51,000		42,000
263 Shuman Boulevard Building mortgage note	49,000		49,000
SanTan Corporate Center mortgage notes	39,000		39,000
One Glenlake Building mortgage note	35,977		37,204
Three Glenlake Building mortgage note	26,423		26,264
215 Diehl Road Building mortgage note	21,000		21,000
544 Lakeview Building mortgage note	8,909		8,842
Total indebtedness	$	1,409,245	$	1,401,618

The estimated fair value of Columbia Property Trust's line of credit and notes payable as of June 30, 2013 and December 31, 2012 was approximately $1,420.5 million and $1,433.1 million, respectively. Columbia Property Trust estimated the fair value of its line of credit by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates. The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized. During the six months ended June 30, 2013 and 2012, Columbia Property Trust made interest payments of approximately $30.4 million and $24.5 million, respectively. There was no interest capitalized in either period. As of June 30, 2013, Columbia Property Trust believes it was in compliance with the restrictive covenants on its term loan, outstanding line of credit, and notes payable obligations.

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Consolidated Statements of Equity Parentheticals (unaudited) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Distributions to common stockholders per share	$ 0.19	$ 0.25
Common Stock
Distributions to common stockholders per share	$ 0.19	$ 0.25

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Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Condensed Consolidating Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Assets:
Land	$ 786,336	$ 789,237
Buildings and improvements, net	3,370,152	3,468,218
Intangible lease assets, net	317,232	341,460
Construction in progress	6,781	12,680
Total real estate assets	4,480,501	4,611,595
Cash and cash equivalents	61,667	53,657	60,618	39,468
Investment in subsidiaries	0	0
Tenant receivables, net of allowance	139,473	134,099
Prepaid expenses and other assets	33,208	29,373
Deferred financing costs, net	8,952	10,490
Intangible lease origination costs, net	186,986	206,927
Deferred lease costs, net	106,652	98,808
Investment in development authority bonds	586,000	586,000
Total assets	5,603,439	5,730,949
Liabilities:
Line of credit and notes payable	1,409,245	1,401,618
Bonds payable, net	248,804	248,678
Accounts payable, accrued expenses, and accrued capital expenditures	97,929	102,858
Due to affiliates	18,006	1,920
Deferred income	22,243	28,071
Intangible lease liabilities, net	90,867	98,298
Obligations under capital leases	586,000	586,000
Total liabilities	2,473,094	2,467,443
Redeemable Common Stock	121,752	99,526
Equity:
Total equity	3,008,593	3,163,980	3,222,895	3,346,972
Total liabilities, redeemable common stock, and equity	5,603,439	5,730,949
Columbia Property Trust (Parent)
Assets:
Land	0	0
Buildings and improvements, net	0	0
Intangible lease assets, net	0	0
Construction in progress	0	0
Total real estate assets	0	0
Cash and cash equivalents	21,945	20,914	35,916	11,291
Investment in subsidiaries	2,931,767	3,068,106
Tenant receivables, net of allowance	0	0
Prepaid expenses and other assets	178,711	178,131
Deferred financing costs, net	0	0
Intangible lease origination costs, net	0	0
Deferred lease costs, net	0	0
Investment in development authority bonds	0	0
Total assets	3,132,423	3,267,151
Liabilities:
Line of credit and notes payable	0	0
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	2,078	3,645
Due to affiliates	0	0
Deferred income	0	0
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	2,078	3,645
Redeemable Common Stock	121,752	99,526
Equity:
Total equity	3,008,593	3,163,980
Total liabilities, redeemable common stock, and equity	3,132,423	3,267,151
Columbia Property Trust OP (the Issuer)
Assets:
Land	6,241	6,241
Buildings and improvements, net	23,275	16,513
Intangible lease assets, net	0	0
Construction in progress	713	5,252
Total real estate assets	30,229	28,006
Cash and cash equivalents	3,486	4,822	4,475	10,597
Investment in subsidiaries	2,638,923	2,679,950
Tenant receivables, net of allowance	28	22
Prepaid expenses and other assets	151,742	203,589
Deferred financing costs, net	7,145	8,498
Intangible lease origination costs, net	0	0
Deferred lease costs, net	55	68
Investment in development authority bonds	0	0
Total assets	2,831,608	2,924,955
Liabilities:
Line of credit and notes payable	501,000	492,000
Bonds payable, net	248,804	248,678
Accounts payable, accrued expenses, and accrued capital expenditures	9,691	12,417
Due to affiliates	18,029	960
Deferred income	0	81
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	777,524	754,136
Redeemable Common Stock	0	0
Equity:
Total equity	2,054,084	2,170,819
Total liabilities, redeemable common stock, and equity	2,831,608	2,924,955
Guarantors
Assets:
Land	270,261	271,757
Buildings and improvements, net	1,782,978	1,812,882
Intangible lease assets, net	134,093	146,448
Construction in progress	3,725	2,505
Total real estate assets	2,191,057	2,233,592
Cash and cash equivalents	20,295	13,673	7,421	9,134
Investment in subsidiaries	0	0
Tenant receivables, net of allowance	80,511	72,283
Prepaid expenses and other assets	2,406	1,531
Deferred financing costs, net	0	0
Intangible lease origination costs, net	117,184	129,947
Deferred lease costs, net	63,159	54,900
Investment in development authority bonds	466,000	466,000
Total assets	2,940,612	2,971,926
Liabilities:
Line of credit and notes payable	145,045	145,974
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	39,915	39,834
Due to affiliates	1,598	1,593
Deferred income	10,202	16,748
Intangible lease liabilities, net	40,923	44,201
Obligations under capital leases	466,000	466,000
Total liabilities	703,683	714,350
Redeemable Common Stock	0	0
Equity:
Total equity	2,236,929	2,257,576
Total liabilities, redeemable common stock, and equity	2,940,612	2,971,926
Non- Guarantors
Assets:
Land	509,834	511,239
Buildings and improvements, net	1,563,899	1,638,823
Intangible lease assets, net	183,139	195,012
Construction in progress	2,343	4,923
Total real estate assets	2,259,215	2,349,997
Cash and cash equivalents	15,941	14,248	12,806	8,446
Investment in subsidiaries	0	0
Tenant receivables, net of allowance	63,213	66,017
Prepaid expenses and other assets	25,011	26,806
Deferred financing costs, net	1,807	1,992
Intangible lease origination costs, net	69,802	76,980
Deferred lease costs, net	43,438	43,840
Investment in development authority bonds	120,000	120,000
Total assets	2,598,427	2,699,880
Liabilities:
Line of credit and notes payable	1,086,145	1,142,644
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	50,524	51,185
Due to affiliates	96	1,051
Deferred income	12,041	11,242
Intangible lease liabilities, net	49,944	54,097
Obligations under capital leases	120,000	120,000
Total liabilities	1,318,750	1,380,219
Redeemable Common Stock	0	0
Equity:
Total equity	1,279,677	1,319,661
Total liabilities, redeemable common stock, and equity	2,598,427	2,699,880
Consolidating adjustments
Assets:
Land	0	0
Buildings and improvements, net	0	0
Intangible lease assets, net	0	0
Construction in progress	0	0
Total real estate assets	0	0
Cash and cash equivalents	0	0
Investment in subsidiaries	(5,570,690)	(5,748,056)
Tenant receivables, net of allowance	(4,279)	(4,223)
Prepaid expenses and other assets	(324,662)	(380,684)
Deferred financing costs, net	0	0
Intangible lease origination costs, net	0	0
Deferred lease costs, net	0	0
Investment in development authority bonds	0	0
Total assets	(5,899,631)	(6,132,963)
Liabilities:
Line of credit and notes payable	(322,945)	(379,000)
Bonds payable, net	0	0
Accounts payable, accrued expenses, and accrued capital expenditures	(4,279)	(4,223)
Due to affiliates	(1,717)	(1,684)
Deferred income	0	0
Intangible lease liabilities, net	0	0
Obligations under capital leases	0	0
Total liabilities	(328,941)	(384,907)
Redeemable Common Stock	0	0
Equity:
Total equity	(5,570,690)	(5,748,056)
Total liabilities, redeemable common stock, and equity	$ (5,899,631)	$ (6,132,963)

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Summary of Significant Accounting Policies (Schedule of Future Amortization by Intangible Asset Class) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
For the years ending December 31:
Intangible lease assets, net	$ 317,232	$ 341,460
Intangible Lease Origination Costs, Net	186,986	206,927
Above-Market In-Place Lease Assets
For the years ending December 31:
For the nine months ended December 31, 2013	2,954
2014	5,581
2015	4,580
2016	3,848
2017	1,979
2018	1,168
Thereafter	7,189
Intangible lease assets, net	27,299	30,437
Absorption Period Costs
For the years ending December 31:
For the nine months ended December 31, 2013	19,442
2014	35,447
2015	31,399
2016	24,761
2017	18,366
2018	13,457
Thereafter	48,404
Intangible lease assets, net	191,276	211,331
Intangible Lease Origination Costs
For the years ending December 31:
For the nine months ended December 31, 2013	19,767
2014	36,815
2015	32,938
2016	25,907
2017	19,297
2018	13,760
Thereafter	38,502
Intangible Lease Origination Costs, Net	186,986	206,927
Intangible Below-Market In-Place Lease Liabilities
For the years ending December 31:
For the nine months ended December 31, 2013	7,363
2014	14,362
2015	12,828
2016	10,398
2017	8,306
2018	7,557
Thereafter	30,053
Intangible lease assets, net	$ 90,867

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Subsequent Event

6 Months Ended

Jun. 30, 2013

Subsequent Events [Abstract]

Subsequent Event

Subsequent Event

Columbia Property Trust has evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and noted the following items in addition to those disclosed elsewhere in this report:

Listing Preparations

In preparation for a potential listing, the DRP was suspended effective July 7, 2013 and the SRP was terminated effective July 31, 2013.

Debt Maturity

On July 31, 2013, Columbia Property Trust used cash on hand and proceeds from the line of credit to fully repay the Three Glenlake Building mortgage note of $26.4 million and the related swap at maturity.

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Supplemental Disclosures of Noncash Investing and Financing Activities

6 Months Ended

Jun. 30, 2013

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosures of Noncash Investing and Financing Activities

Supplemental Disclosures of Noncash Investing and Financing Activities

Outlined below are significant noncash investing and financing activities for the six months ended June 30, 2013 and 2012 (in thousands):

	Six months ended June 30,
	2013			2012
Other assets assumed at acquisition	$	741		$	—
Other liabilities assumed at acquisition	$	741		$	—
Other liabilities settled at disposition	$	872		$	—
Interest accruing to notes payable	$	159		$	152
Amortization of discounts (premiums) on debt	$	(304	)	$	193
Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	$	2,717		$	(3,408	)
Accrued capital expenditures and deferred lease costs	$	13,408		$	5,432
Accrued deferred financing costs	$	—		$	10
Accrued offering costs	$	6		$	—
Accrued redemptions of common stock	$	2,079		$	1,216
Increase in redeemable common stock	$	22,226		$	38,308

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Real Estate and Other Transactions (Tables)

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information

The following unaudited pro forma statements of operations presented for the six months ended June 30, 2013 and the three and six months endedJune 30, 2012 have been prepared for Columbia Property Trust to give effect to the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services as if the acquisitions occurred on January 1, 2012. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services been consummated as of January 1, 2012 (in thousands).

	Three months ended June 30,		Six months ended June 30,
	2012		2013		2012
Revenues	$	142,775	$	296,244	$	286,076
Net income attributable to common stockholders	$	18,919	$	31,770	$	23,719

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("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 these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation.

Fair Value Measurements

Fair Value Measurements

Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:

Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.

Level 2 – Assets and liabilities valued based on observable market data for similar instruments.

Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.

Real Estate Assets

Real Estate Assets

Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Site improvements	15 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Evaluating the Recoverability of Real Estate Assets

Evaluating the Recoverability of Real Estate Assets

Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of our assets may be carried at more than an amount that could be realized in a current disposition transaction.

Projections of expected future operating cash flows require that Columbia Property Trust estimates 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 discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of our real estate assets and related intangible assets and net income (loss).

Assets Held for Sale

Assets Held for Sale

Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

• Management, having the authority to approve the action, commits to a plan to sell the property.

• The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

• An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

• The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

• The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

• Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized.

Intangible Assets and Liabilities Arising from In-Place Leases

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessor

Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail).

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessee

In-place ground leases where Columbia Property Trust is the lessee may have value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount 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 lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases.

Prepaid Expenses and Other Assets

Prepaid Expenses and Other Assets

Prepaid expenses and other assets primarily are comprised of escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses and other assets will be expensed as incurred or reclassified to other asset accounts upon being put into service in future periods.

Interest Rate Swap Agreements

Interest Rate Swap Agreements

Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.

Income Taxes

Income Taxes

Columbia Property Trust 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, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.

Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), formerly Wells TRS II, LLC; Columbia KCP TRS, LLC ("Columbia KCP TRS"), formerly Wells KCP TRS, LLC; and Wells Energy TRS, LLC ("Wells Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.

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Document Entity Information	6 Months Ended
	Jun. 30, 2013	Jul. 31, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	COLUMBIA PROPERTY TRUST, INC.
Entity Central Index Key	0001252849
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		537,048,293

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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives for Real Estate Assets

The estimated useful lives of its assets by class are as follows:

Buildings	40 years
Building improvements	5-25 years
Site improvements	15 years
Tenant improvements	Shorter of economic life or lease term
Intangible lease assets	Lease term

Schedule of Recognized Fair Value Adjustments for Real Estate Properties

The table below represents the detail of the adjustments recognized for the six months endedJune 30, 2013 (in thousands) using Level 3 inputs. There were no adjustments recognized during the six months endedJune 30, 2012.

Property	Net Book Value		Impairment Loss Recognized			Fair Value
120 Eagle Rock	$	23,808	$	(11,708	)	$	12,100
333 & 777 Republic Drive	$	13,359	$	(5,159	)	$	8,200

Schedule of Intangible Assets and Liabilities

As of June 30, 2013 and December 31, 2012, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):

		Intangible Lease Assets						Intangible Lease Origination Costs			Intangible Below-Market In-Place Lease Liabilities
		Above-Market In-Place Lease Assets			Absorption Period Costs
June 30, 2013	Gross	$	85,204		$	454,291		$	434,767		$	180,459
	Accumulated Amortization	(57,905		)	(263,015		)	(247,781		)	(89,592		)
	Net	$	27,299		$	191,276		$	186,986		$	90,867
December 31, 2012	Gross	$	86,696		$	459,931		$	437,857		$	182,624
	Accumulated Amortization	(56,259		)	(248,600		)	(230,930		)	(84,326		)
	Net	$	30,437		$	211,331		$	206,927		$	98,298

Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the three months ended June 30, 2013	$	1,453	$	9,919	$	10,017	$	3,705
For the three months ended June 30, 2012	$	2,254	$	12,608	$	10,498	$	4,174
For the six months ended June 30, 2013	$	3,138	$	20,054	$	19,941	$	7,431
For the six months ended June 30, 2012	$	4,688	$	25,980	$	21,145	$	8,415

The remaining net intangible assets and liabilities as of June 30, 2013 will be amortized as follows (in thousands):

	Intangible Lease Assets				Intangible Lease Origination Costs		Intangible Below-Market In-Place Lease Liabilities
	Above-Market In-Place Lease Assets		Absorption Period Costs
For the six months ending December 31, 2013	$	2,954	$	19,442	$	19,767	$	7,363
For the years ending December 31:
2014	5,581		35,447		36,815		14,362
2015	4,580		31,399		32,938		12,828
2016	3,848		24,761		25,907		10,398
2017	1,979		18,366		19,297		8,306
2018	1,168		13,457		13,760		7,557
Thereafter	7,189		48,404		38,502		30,053
	$	27,299	$	191,276	$	186,986	$	90,867

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of June 30, 2013, the remaining net below-market lease asset will be amortized as follows (in thousands):

For the six months ending December 31, 2013	$	1,034
For the years ending December 31:
2014	2,069
2015	2,069
2016	2,069
2017	2,069
2018	2,069
Thereafter	87,794
	$	99,173

Schedule of Interest Rate Derivatives

The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):

		Estimated Fair Value as of
Instrument Type	Balance Sheet Classification	June 30, 2013			December 31, 2012
Derivatives designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(2,587	)	$	(5,305	)
Derivatives not designated as hedging instruments:
Interest rate contracts	Accounts payable	$	(9,648	)	$	(13,109	)

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position

	Six months ended June 30,
	2013		2012
Market value adjustment to interest rate swaps designated as hedging instruments and included in   other comprehensive income	$	2,717	$	(3,408	)
Gain (loss) on interest rate swap recognized through earnings	$	221	$	(89	)