HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

COMPANY PROFILE

The Company:

HRPT Properties Trust, or HRP, is a real estate investment trust, or REIT, which primarily owns office buildings located throughout the United States. The majority of our properties are commercial office buildings located in suburban areas and central business districts, or CBDs, of major metropolitan markets. As of March 31, 2008, we also owned approximately 17 million square feet of leased industrial and commercial lands in Oahu, Hawaii. We have large concentrations of properties leased to tenants with good credit characteristics, such as the U.S. Government. We have been investment grade rated since 1994 and we are included in a number of financial indices, including the Russell 1000®, the MSCI US REIT Index, the S&P REIT Composite Index and the FTSE NAREIT Composite Index.

Strategy:

Our primary business strategy is to efficiently operate our properties to maintain high occupancies, at market rents, with strong credit quality tenants. We attempt to maintain an investment portfolio that is balanced between “security” and “growth”. The security part of our portfolio includes properties that are long term leased or leased to tenants we believe are likely to renew their occupancy, such as government agencies, and our leased lands in Hawaii. The growth part of our portfolio includes our multi-tenant commercial office buildings, which we believe may generate higher rents and appreciate in value in the future because of their physical qualities and locations. Although we sometimes sell properties, we consider ourselves to be a long term investor and are more interested in the long term earnings potential of our properties than selling properties for short term gains. We currently do not have any investments in joint venture or off balance sheet entities. We generally undertake few speculative development projects, and we will sometimes do a build to suit development project.

Management:

HRP is managed by Reit Management & Research LLC, or RMR. RMR was founded in 1986 to manage public investments in real estate. As of March 31, 2008, RMR managed one of the largest portfolios of publicly owned real estate in North America, including nearly 1,300 properties, located in 45 states, the District of Columbia, Puerto Rico and Ontario, Canada. RMR has approximately 500 employees in its headquarters and regional offices located throughout the Country. In addition to managing HRP, RMR and its affiliates also manage Hospitality Properties Trust, a publicly traded REIT that owns hotels and travel centers, and Senior Housing Properties Trust, a publicly traded REIT that owns healthcare properties. An affiliate of RMR, RMR Advisors, is the investment manager of several publicly traded mutual funds, the RMR Funds, which principally invest in securities of real estate companies (excluding securities of companies managed by RMR and its affiliates). The public companies managed by RMR and its affiliates had combined total market capitalization of approximately $15 billion as of March 31, 2008. We believe that being managed by RMR is a competitive advantage for HRP because RMR provides HRP with a depth and quality of management and experience which may be unequaled in the real estate industry. We also believe RMR provides management services to HRP at costs that are lower than HRP would have to pay for similar quality services.

Corporate Headquarters:

400 Centre Street

Newton, MA 02458

(t) (617) 332-3990

(f) (617) 332-2261

Stock Exchange Listing:

New York Stock Exchange

Trading Symbols:

Common Stock — HRP

Preferred Stock Series B — HRP-B

Preferred Stock Series C — HRP-C

Preferred Stock Series D — HRP-D

Senior Unsecured Debt Ratings:

Moody’s — Baa2

Standard & Poor’s — BBB

Portfolio Data (as of 3/31/08):

Total properties	537
Total sq. ft. (000s)	65,315
Percent leased	91.6	%

Portfolio Concentration by Sq. Ft. (as of 3/31/08):

			Industrial
	Office		and Other		Total
CBD	18.6	%	0.3	%	18.9	%
Suburban	36.8	%	44.3	%	81.1	%
Total	55.4	%	44.6	%	100.0	%

Portfolio Concentration by NOI (Q1 2008) (1):

			Industrial
	Office		and Other		Total
CBD	31.2	%	0.2	%	31.4	%
Suburban	48.7	%	19.9	%	68.6	%
Total	79.9	%	20.1	%	100.0	%

Portfolio Concentration by Major Market:

	3/31/08		Q1 2008
	Sq. Ft.		NOI
Metro Philadelphia, PA	8.3	%	13.2	%
Oahu, HI	27.4	%	10.1	%
Metro Washington, DC	4.1	%	9.4	%
Southern California	2.2	%	6.9	%
Metro Boston, MA	4.7	%	6.6	%
Metro Austin, TX	4.2	%	4.8	%
Other Markets	49.1	%	49.0	%
Total	100.0	%	100.0	%

(1)	We compute NOI, or property net operating income, as rental income from real estate less property operating expenses; NOI excludes income from other investments; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

KEY FINANCIAL DATA

(amounts in thousands, except per share data)

	As of and For the Three Months Ended
	3/31/2008			12/31/2007			9/30/2007			6/30/2007			3/31/2007

Shares Outstanding:
Common shares outstanding (at end of period)	225,444			225,444			212,457			211,947			211,057
Common shares outstanding (at end of period) – diluted (1)	254,637			254,637			241,650			241,139			240,249
Preferred shares outstanding (at end of period) (1)	28,180			28,180			33,180			33,180			33,180
Weighted average common shares and units outstanding - basic	225,444			222,927			212,078			211,721			210,609
Weighted average common shares and units outstanding - diluted (1)	254,637			252,120			241,271			240,914			239,802

Common Share Data:
Price at end of period	$	6.73		$	7.73		$	9.89		$	10.40		$	12.30
High during period	$	8.56		$	10.49		$	10.90		$	12.72		$	13.67
Low during period	$	6.58		$	7.40		$	9.06		$	10.13		$	12.04
Annualized dividends paid per share	$	0.84		$	0.84		$	0.84		$	0.84		$	0.84
Annualized dividend yield (at end of period)	12.5		%	10.9		%	8.5		%	8.1		%	6.8		%

Market Capitalization:
Total debt (book value)	$	2,911,699		$	2,774,160		$	2,674,859		$	2,614,133		$	2,499,305
Plus: market value of preferred shares (at end of period)	557,678			586,010			800,245			817,108			860,432
Plus: market value of common shares (at end of period)	1,517,238			1,742,682			2,101,200			2,204,249			2,596,001
Total market capitalization	$	4,986,615		$	5,102,852		$	5,576,304		$	5,635,490		$	5,955,738
Total debt / total market capitalization	58.4		%	54.4		%	48.0		%	46.4		%	42.0		%

Book Capitalization:
Total debt	$	2,911,699		$	2,774,160		$	2,674,859		$	2,614,133		$	2,499,305
Plus: total stockholders’ equity	2,870,279			2,902,883			2,938,536			2,961,698			2,979,177
Total book capitalization	$	5,781,978		$	5,677,043		$	5,613,395		$	5,575,831		$	5,478,482
Total debt / total book capitalization	50.4		%	48.9		%	47.7		%	46.9		%	45.6		%

Selected Balance Sheet Data:
Total assets	$	5,959,846		$	5,859,332		$	5,800,512		$	5,750,889		$	5,636,768
Total liabilities	$	3,089,567		$	2,956,449		$	2,861,976		$	2,789,191		$	2,657,591
Gross book value of real estate assets (2)	$	6,501,910		$	6,367,166		$	6,261,302		$	6,198,307		$	6,022,930
Total debt / gross book value of real estate (2)	44.8		%	43.6		%	42.7		%	42.2		%	41.5		%

Selected Income Statement Data (3):
Rental income	$	215,164		$	214,006		$	211,217		$	209,995		$	205,050
EBITDA (4)	$	121,157		$	120,608		$	119,917		$	120,272		$	116,930
Property net operating income (NOI) (5)	$	130,201		$	128,785		$	128,449		$	128,829		$	125,049
NOI margin (6)	60.5		%	60.2		%	60.8		%	61.3		%	61.0		%
Net income	$	27,406		$	27,479		$	32,154		$	31,474		$	33,148
Preferred distributions	$	(12,667	)	$	(14,368	)	$	(15,402	)	$	(15,401	)	$	(15,401	)
Excess redemption price paid over carrying value of preferred shares	$	—		$	(4,230	)	$	—		$	—		$	—
Net income available for common shareholders	$	14,739		$	8,881		$	16,752		$	16,073		$	17,747
Funds from operations (FFO) (7)	$	75,769		$	75,269		$	78,270		$	77,971		$	76,659
FFO available for common shareholders (7)	$	63,102		$	60,901		$	62,868		$	62,570		$	61,258
Common distributions paid	$	47,343		$	47,341		$	44,509		$	44,390		$	44,111

Per Share Data (1):
Net income available for common shareholders – basic and diluted	$	0.07		$	0.04		$	0.08		$	0.08		$	0.08
FFO available for common shareholders – basic (7)	$	0.28		$	0.27		$	0.30		$	0.30		$	0.29
FFO available for common shareholders – diluted (1) (7)	$	0.27		$	0.27		$	0.29		$	0.29		$	0.28
Common distributions paid	$	0.21		$	0.21		$	0.21		$	0.21		$	0.21
FFO payout ratio	75.0		%	77.7		%	70.8		%	70.9		%	72.0		%

Coverage Ratios:
EBITDA (4) / interest expense	2.7		x	2.7		x	2.7		x	2.8		x	2.9		x
EBITDA (4) / interest expense and preferred distributions	2.1		x	2.0		x	2.0		x	2.1		x	2.1		x

(1)		As of 3/31/2008, we had 15,180 preferred shares outstanding that were convertible into 29,193 common shares. See page 16 for calculations of diluted net income, FFO and weighted average common shares outstanding.
(2)		Gross book value of real estate assets is real estate properties, at cost, including purchase price allocations less impairment writedowns, if any.
(3)		Prior periods reflect amounts previously reported and excludes retroactive adjustments for properties classified in discontinued operations in the current period.
(4)		See page 13 for calculation of EBITDA.
(5)		Property net operating income, or NOI, is defined as rental income from real estate less property operating expenses; NOI excludes income from other investments; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.
(6)		NOI margin is defined as property net operating income, or NOI, as a percentage of rental income.
(7)		See page 15 for calculation of FFO and FFO available for common shareholders.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

CONSOLIDATED BALANCE SHEETS

(amounts in thousands, except share data)

	As of March 31,			As of December 31,
	2008			2007
				(audited)
ASSETS
Real estate properties:
Land	$	1,201,683		$	1,189,684
Buildings and improvements	5,072,208			4,966,610
	6,273,891			6,156,294
Accumulated depreciation	(847,622		)	(808,216		)
	5,426,269			5,348,078
Acquired real estate leases	162,007			150,672
Cash and cash equivalents	32,065			19,879
Restricted cash	11,543			18,027
Rents receivable, net of allowance for doubtful accounts of $7,728 and $6,290, respectively	202,335			197,967
Other assets, net	125,627			124,709
Total assets	$	5,959,846		$	5,859,332

LIABILITIES AND SHAREHOLDERS’ EQUITY
Revolving credit facility	$	308,000		$	140,000
Senior unsecured debt, net	2,240,144			2,239,784
Mortgage notes payable, net	363,555			394,376
Accounts payable and accrued expenses	81,040			89,441
Acquired real estate lease obligations	43,268			41,607
Rent collected in advance	25,507			24,779
Security deposits	16,724			16,063
Due to affiliates	11,329			10,399
Total liabilities	3,089,567			2,956,449

Shareholders’ equity:
Preferred shares of beneficial interest, $0.01 par value: 50,000,000 shares authorized;
Series B preferred shares; 8 3/4% cumulative redeemable at par on or after September 12, 2007; 7,000,000 shares issued and and outstanding, aggregate liquidation preference $175,000	169,079			169,079
Series C preferred shares; 7 1/8% cumulative redeemable at par on or after February 15, 2011; 6,000,000 shares issued and outstanding, aggregate liquidation preference $150,000	145,015			145,015
Series D preferred shares; 6 1/2% cumulative convertible; 15,180,000 shares issued and outstanding, aggregate liquidation preference $379,500	368,270			368,270
Common shares of beneficial interest, $0.01 par value: 350,000,000 shares authorized; 225,444,497 shares issued and outstanding	2,254			2,254
Additional paid in capital	2,923,455			2,923,455
Cumulative net income	1,855,015			1,827,609
Cumulative common distributions	(2,298,882		)	(2,251,539		)
Cumulative preferred distributions	(293,927		)	(281,260		)
Total shareholders’ equity	2,870,279			2,902,883
Total liabilities and shareholders’ equity	$	5,959,846		$	5,859,332

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

CONSOLIDATED STATEMENTS OF INCOME

(amounts in thousands, except per share data)

	For the Three Months Ended
	3/31/2008			3/31/2007

Rental income (1)	$	215,164		$	204,964

Expenses:
Operating expenses	84,963			79,977
Depreciation and amortization	48,363			43,505
General and administrative	9,376			8,578
Total expenses	142,702			132,060

Operating income	72,462			72,904

Interest income	332			459
Interest expense (including amortization of debt discounts, premiums and deferred financing fees of $1,085 and $1,097, respectively)	(45,224		)	(40,271		)
Income from continuing operations before income tax expense	27,570			33,092
Income tax expense	(164		)	—
Income from continuing operations	27,406			33,092
Income from discontinued operations	—			56
Net income	27,406			33,148
Preferred distributions	(12,667		)	(15,401		)
Net income available for common shareholders	$	14,739		$	17,747

Weighted average common shares outstanding – basic	225,444			210,609

Weighted average common shares outstanding – diluted (2)	254,637			239,802

Earnings per common share:
Income from continuing operations available for common shareholders – basic and diluted (2)	$	0.07		$	0.08
Income from discontinued operations – basic and diluted (2)	$	—		$	—
Net income available for common shareholders – basic and diluted (2)	$	0.07		$	0.08

Additional Data:
General and administrative expenses / rental income	4.36		%	4.19		%
General and administrative expenses / total assets (at end of period)	0.16		%	0.15		%

Non cash straight line rent adjustments (FAS 13) (1)	$	1,987		$	4,724
Lease value amortization (FAS 141) (1)	$	(2,513	)	$	(2,447	)
Lease termination fees included in rental income	$	1,007		$	325
Capitalized interest expense	$	—		$	226

(1)		We report rental income on a straight line basis over the terms of the respective leases; rental income includes non-cash straight line rent adjustments. Rental income also includes non-cash amortization of intangible lease assets and liabilities.
(2)		As of 3/31/2008, we had 15,180 series D preferred shares outstanding that were convertible into 29,193 common shares. See page 16 for calculations of diluted net income and weighted average common shares outstanding.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

CONSOLIDATED STATEMENTS OF CASH FLOWS

(amounts in thousands)

	For the Three Months Ended
	3/31/2008			3/31/2007
Cash flows from operating activities:
Net income	$	27,406		$	33,148
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	39,406			35,005
Amortization of debt discounts, premiums and deferred financing fees	1,085			1,097
Amortization of acquired real estate leases	7,473			7,724
Other amortization	3,997			3,229
Change in assets and liabilities:
Decrease in restricted cash	6,484			7,400
Increase in rents receivable and other assets	(19,922		)	(24,931		)
Decrease in accounts payable and accrued expenses	(6,217		)	(23,620		)
Increase in rent collected in advance	728			3,340
Increase (decrease) in security deposits	661			(102		)
Increase (decrease) in due to affiliates	930			(5,260		)
Cash provided by operating activities	62,031			37,030

Cash flows from investing activities:
Real estate acquisitions and improvements	(127,168		)	(84,734		)
Cash used for investing activities	(127,168		)	(84,734		)

Cash flows from financing activities:
Proceeds from issuance of common shares, net	—			12,998
Proceeds from borrowings	188,000			120,000
Payments on borrowings	(50,664		)	(18,163		)
Deferred financing fees	(3		)	(7		)
Distributions to common shareholders	(47,343		)	(44,111		)
Distributions to preferred shareholders	(12,667		)	(17,737		)
Cash provided by financing activities	77,323			52,980

Increase in cash and cash equivalents	12,186			5,276
Cash and cash equivalents at beginning of period	19,879			17,783
Cash and cash equivalents at end of period	$	32,065		$	23,059

Supplemental cash flow information:
Interest paid (including capitalized interest paid of $0 and $226, respectively)	$	50,973		$	48,005

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

CALCULATION AND RECONCILIATION OF PROPERTY NET OPERATING INCOME (NOI)

(amounts in thousands)

	For the Three Months Ended
	3/31/2008			3/31/2007

Calculation of NOI (1):
Rental income	$	215,164		$	204,964
Operating expenses	(84,963		)	(79,977		)
Property net operating income (NOI)	$	130,201		$	124,987

Reconciliation of NOI to Net Income Available for Common Shareholders:

Property net operating income	$	130,201		$	124,987
Depreciation and amortization	(48,363		)	(43,505		)
General and administrative	(9,376		)	(8,578		)
Operating income	72,462			72,904

Interest income	332			459
Interest expense	(45,224		)	(40,271		)
Income from continuing operations before income tax expense	27,570			33,092
Income tax expense	(164		)	—
Income from continuing operations	27,406			33,092

Income from discontinued operations	—			56
Net income	27,406			33,148

Preferred distributions	(12,667		)	(15,401		)
Net income available for common shareholders	$	14,739		$	17,747

(1) Excludes properties classified in discontinued operations.

We compute NOI as shown above. We consider NOI to be an appropriate supplemental measure to net income available for common shareholders because it helps both investors and management to understand the operations of our properties. We use NOI internally as a performance measure and believe NOI provides useful information to investors regarding our results of operations because it reflects only those income and expense items that are incurred at the property level. Our management also uses NOI to evaluate individual, regional and company wide property level performance. NOI excludes certain components from net income available for common shareholders in order to provide results that are more closely related to our properties’ results of operations. NOI does not represent cash generated by operating activities in accordance with generally accepted accounting principles, or GAAP, and should not be considered an alternative to net income, net income available for common shareholders or cash flow from operating activities as a measure of financial performance.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

SUMMARY RESULTS OF OPERATIONS BY PROPERTY TYPE

(dollars and sq. ft. in thousands)

	As of and For the Three Months Ended (1)
	3/31/2008			3/31/2007

Number of Properties:

Office	368			359
Industrial and Other	169			148
Total	537			507

CBD	52			50
Suburban	485			457
Total	537			507

Square Feet (2):

Office	36,204			34,917
Industrial and Other	29,111			25,310
Total	65,315			60,227

CBD	12,340			11,485
Suburban	52,975			48,742
Total	65,315			60,227

Percent Leased (3):

Office	89.1		%	90.0		%
Industrial and Other	94.8		%	96.6		%
Total	91.6		%	92.8		%

CBD	90.2		%	89.8		%
Suburban	91.9		%	93.5		%
Total	91.6		%	92.8		%

Rental Income (4):

Office	$	179,390		$	174,510
Industrial and Other	35,774			30,454
Total	$	215,164		$	204,964

CBD	$	74,262		$	70,490
Suburban	140,902			134,474
Total	$	215,164		$	204,964

Property Net Operating Income (NOI) (5):

Office	$	104,000		$	102,973
Industrial and Other	26,201			22,014
Total	$	130,201		$	124,987

CBD	$	40,830		$	39,166
Suburban	89,371			85,821
Total	$	130,201		$	124,987

NOI Margin (6):

Office	58.0		%	59.0		%
Industrial and Other	73.2		%	72.3		%
Total	60.5		%	61.0		%

CBD	55.0		%	55.6		%
Suburban	63.4		%	63.8		%
Total	60.5		%	61.0		%

(1)		Excludes properties classified in discontinued operations.
(2)		Prior periods exclude space remeasurements made during the current period.
(3)		Percent leased includes (i) space being fitted out for occupancy pursuant to signed leases and (ii) space which is leased, but is not occupied or is being offered for sublease by tenants.
(4)		Includes some triple net lease rental income.
(5)		Property net operating income, or NOI, is defined as property rental income less property operating expenses; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.
(6)		NOI margin is defined as NOI as a percentage of rental income.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

SUMMARY RESULTS OF OPERATIONS BY MAJOR MARKET

(dollars and sq. ft. in thousands)

	As of and For the Three Months Ended (1)
	3/31/2008			3/31/2007
Number of Properties:
Metro Philadelphia, PA	21			21
Oahu, HI	57			56
Metro Washington, DC	20			20
Southern California	24			24
Metro Boston, MA	39			37
Metro Austin, TX	26			26
Other markets	350			323
Total	537			507

Square Feet (2):
Metro Philadelphia, PA	5,424			5,448
Oahu, HI	17,914			17,880
Metro Washington, DC	2,658			2,658
Southern California	1,444			1,444
Metro Boston, MA	3,100			3,027
Metro Austin, TX	2,728			2,807
Other markets	32,047			26,963
Total	65,315			60,227

Percent Leased (3):
Metro Philadelphia, PA	90.5		%	88.8		%
Oahu, HI	95.1		%	97.3		%
Metro Washington, DC	91.6		%	90.8		%
Southern California	95.2		%	97.7		%
Metro Boston, MA	87.1		%	96.1		%
Metro Austin, TX	89.7		%	94.1		%
Other markets	90.3		%	90.0		%
Total	91.6		%	92.8		%

Rental Income (4):
Metro Philadelphia, PA	$	32,084		$	31,046
Oahu, HI	16,863			15,353
Metro Washington, DC	20,103			19,513
Southern California	12,353			12,491
Metro Boston, MA	14,295			15,314
Metro Austin, TX	11,395			11,111
Other markets	108,071			100,136
Total	$	215,164		$	204,964

Property Net Operating Income (NOI) (5):
Metro Philadelphia, PA	$	17,154		$	15,975
Oahu, HI	13,159			12,299
Metro Washington, DC	12,201			12,329
Southern California	9,022			9,245
Metro Boston, MA	8,637			10,001
Metro Austin, TX	6,279			5,762
Other markets	63,749			59,376
Total	$	130,201		$	124,987

NOI Margin (6):
Metro Philadelphia, PA	53.5		%	51.5		%
Oahu, HI	78.0		%	80.1		%
Metro Washington, DC	60.7		%	63.2		%
Southern California	73.0		%	74.0		%
Metro Boston, MA	60.4		%	65.3		%
Metro Austin, TX	55.1		%	51.9		%
Other markets	59.0		%	59.3		%
Total	60.5		%	61.0		%

(1)		Excludes properties classified in discontinued operations.
(2)		Prior periods exclude space remeasurements made during the current period.
(3)		Percent leased includes (i) space being fitted out for occupancy pursuant to signed leases and (ii) space which is leased, but is not occupied or is being offered for sublease by tenants.
(4)		Includes some triple net lease rental income.
(5)		Property net operating income, or NOI, is defined as property rental income less property operating expenses; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.
(6)		NOI margin is defined as NOI as a percentage of rental income.

We define our major markets as markets which currently, or during either of the last two quarters, constitute 5% or more of our leaseable square feet, rental income or NOI. Major markets are based on geographic market areas as defined by CoStar, except for the Metro Philadelphia, PA market which excludes properties located in Wilmington, DE. Southern California includes properties located in the Los Angeles, San Diego and Orange County markets, as defined by CoStar. Oahu, HI includes all properties located on the island of Oahu.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

SAME PROPERTY RESULTS AND ANALYSIS BY PROPERTY TYPE

(dollars and sq. ft. in thousands)

	As of and For the Three Months Ended (1)
	3/31/2008			3/31/2007
Office:
Properties	355			355
Total sq. ft.	34,520			34,520
Percent leased (2)	88.8		%	89.9		%
Rental income (3)	$	173,666		$	174,368
Property net operating income (NOI) (4)	$	99,956		$	102,866
NOI % growth	-2.8		%

Industrial and Other:
Properties	148			148
Total sq. ft.	25,144			25,144
Percent leased (2)	94.3		%	96.7		%
Rental income (3)	$	31,369		$	30,454
Property net operating income (NOI) (4)	$	22,444		$	22,014
NOI % growth	2.0		%

CBD:
Properties	50			50
Total sq. ft.	11,461			11,461
Percent leased (2)	90.2		%	89.8		%
Rental income (3)	$	71,556		$	70,491
Property net operating income (NOI) (4)	$	39,183		$	39,166
NOI % growth	0.0		%

Suburban:
Properties	453			453
Total sq. ft.	48,203			48,203
Percent leased (2)	91.4		%	93.5		%
Rental income (3)	$	133,479		$	134,331
Property net operating income (NOI) (4)	$	83,217		$	85,714
NOI % growth	-2.9		%

Total:
Properties	503			503
Total sq. ft.	59,664			59,664
Percent leased (2)	91.1		%	92.8		%
Rental income (3)	$	205,035		$	204,822
Property net operating income (NOI) (4)	$	122,400		$	124,880
NOI % growth	-2.0		%

(1)		Based on properties owned continuously since 1/1/2007 and excludes properties classified in discontinued operations.
(2)		Percent leased includes (i) space being fitted out for occupancy pursuant to signed leases and (ii) space which is leased, but is not occupied or is being offered for sublease by tenants.
(3)		Includes some triple net lease rental income.
(4)		Property net operating income, or NOI, is defined as property rental income less property operating expenses; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

SAME PROPERTY RESULTS AND ANALYSIS BY MAJOR MARKET

(dollars and sq. ft. in thousands)

	As of and For the Three Months Ended (1)
	3/31/2008			3/31/2007
Metro Philadelphia, PA:
Properties	21			21
Total sq. ft.	5,424			5,424
Percent leased (2)	90.5		%	88.8		%
Rental income (3)	$	32,084		$	31,046
Property net operating income (NOI) (4)	$	17,154		$	15,975
NOI % growth	7.4		%

Oahu, HI:
Properties	56			56
Total sq. ft.	17,793			17,793
Percent leased (2)	95.6		%	97.5		%
Rental income (3)	$	16,746		$	15,353
Property net operating income (NOI) (4)	$	13,217		$	12,300
NOI % growth	7.5		%

Metro Washington, D.C.:
Properties	20			20
Total sq. ft.	2,658			2,658
Percent leased (2)	91.6		%	90.8		%
Rental income (3)	$	20,103		$	19,513
Property net operating income (NOI) (4)	$	12,201		$	12,329
NOI % growth	-1.0		%

Southern California:
Properties	24			24
Total sq. ft.	1,444			1,444
Percent leased (2)	95.2		%	97.7		%
Rental income (3)	$	12,353		$	12,491
Property net operating income (NOI) (4)	$	9,022		$	9,245
NOI % growth	-2.4		%

Metro Boston, MA:
Properties	36			36
Total sq. ft.	2,739			2,739
Percent leased (2)	85.3		%	95.7		%
Rental income (3)	$	13,211		$	15,301
Property net operating income (NOI) (4)	$	7,630		$	9,991
NOI % growth	-23.6		%

Metro Austin, TX:
Properties	26			26
Total sq. ft.	2,728			2,728
Percent leased (2)	89.7		%	94.1		%
Rental income (3)	$	11,395		$	11,111
Property net operating income (NOI) (4)	$	6,279		$	5,762
NOI % growth	9.0		%

Other Markets:
Properties	320			320
Total sq. ft.	26,878			26,878
Percent leased (2)	88.8		%	90.0		%
Rental income (3)	$	99,143		$	100,007
Property net operating income (NOI) (4)	$	56,897		$	59,278
NOI % growth	-4.0		%

Total:
Properties	503			503
Total sq. ft.	59,664			59,664
Percent leased (2)	91.1		%	92.8		%
Rental income (3)	$	205,035		$	204,822
Property net operating income (NOI) (4)	$	122,400		$	124,880
NOI % growth	-2.0		%

(1)		Based on properties owned continuously since 1/1/2007 and excludes properties classified in discontinued operations.
(2)		Percent leased includes (i) space being fitted out for occupancy pursuant to signed leases and (ii) space which is leased, but is not occupied or is being offered for sublease by tenants.
(3)		Includes some triple net lease rental income.
(4)		Property net operating income, or NOI, is defined as property rental income less property operating expenses; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

DEBT SUMMARY

(dollars in thousands)

	Coupon		Interest		Principal			Maturity	Due at		Years to
	Rate		Rate (1)		Balance			Date	Maturity		Maturity

Secured Fixed Rate Debt:

Secured debt Two properties in Richland, WA	8.000	%	8.000	%	$	1,891		11/15/2008	$	1,004	0.6
Secured debt One property in Buffalo, NY	5.170	%	5.170	%	1,317			1/1/2009	134		0.8
Secured debt See note (2)	6.814	%	7.842	%	237,759			1/31/2011	225,547		2.8
Secured debt One property in Bannockburn, IL	8.050	%	5.240	%	24,695			6/1/2012	22,719		4.2
Secured debt Two properties in Rochester, NY	6.000	%	6.000	%	5,189			10/11/2012	4,507		4.5
Secured debt One property in Decatur, GA	6.500	%	6.500	%	4,507			1/11/2013	4,137		4.8
Secured debt One property in Macon, GA	4.950	%	6.280	%	13,654			5/11/2014	11,930		6.1
Secured debt One property in Birmingham, AL	7.360	%	5.610	%	13,229			8/1/2016	9,281		8.3
Secured debt One property in Syracuse, NY	7.310	%	6.030	%	4,290			1/1/2022	—		13.8
Secured debt One property in Syracuse, NY	7.850	%	6.030	%	2,090			1/1/2022	—		13.8
Secured debt One property in North Haven, CT	6.750	%	5.240	%	4,950			3/1/2022	—		13.9
Secured debt One property in East Windsor, CT (3)	5.710	%	5.240	%	9,243			3/1/2026	—		17.9
Secured debt One property in Philadelphia, PA (4)	6.794	%	7.383	%	40,963			1/1/2029	2,478		20.8
Total / weighted average secured fixed rate debt	6.813	%	7.289	%	$	363,777			$	281,737	6.0

Unsecured Debt:

Unsecured Floating Rate Debt:
Revolving credit facility (LIBOR + 55 bps) (5)	3.946	%	3.946	%	$	308,000		8/22/2010	$	308,000	2.4
Senior notes due 2011 (3-MONTH LIBOR + 60 bps) (6)	5.179	%	5.179	%	200,000			3/16/2011	200,000		3.0
Total / weighted average unsecured floating rate debt	4.431	%	4.431	%	$	508,000			$	508,000	2.6

Unsecured Fixed Rate Debt:
Senior notes due 2010	8.875	%	9.000	%	$	30,000		8/1/2010	$	30,000	2.3
Senior notes due 2010	8.625	%	8.770	%	20,000			10/1/2010	20,000		2.5
Senior notes due 2012	6.950	%	7.179	%	200,000			4/1/2012	200,000		4.0
Senior notes due 2013	6.500	%	6.693	%	200,000			1/15/2013	200,000		4.8
Senior notes due 2014	5.750	%	5.828	%	250,000			2/15/2014	250,000		5.9
Senior notes due 2015	6.400	%	6.601	%	200,000			2/15/2015	200,000		6.9
Senior notes due 2015	5.750	%	5.790	%	250,000			11/1/2015	250,000		7.6
Senior notes due 2016	6.250	%	6.470	%	400,000			8/15/2016	400,000		8.4
Senior notes due 2017	6.250	%	6.279	%	250,000			6/15/2017	250,000		9.2
Senior notes due 2018	6.650	%	6.768	%	250,000			1/15/2018	250,000		9.8
Total / weighted average unsecured fixed rate debt	6.346	%	6.485	%	$	2,050,000			$	2,050,000	7.2

Total / weighted average unsecured debt	5.966	%	6.077	%	$	2,558,000			$	2,558,000	6.3

Total / weighted average debt	6.071	%	6.228	%	$	2,921,777			$	2,839,737	6.2

Summary Debt:
Total / weighted average secured fixed rate debt	6.813	%	7.289	%	$	363,777			$	281,737	6.0
Total / weighted average unsecured floating rate debt	4.431	%	4.431	%	508,000				508,000		2.6
Total / weighted average unsecured fixed rate debt	6.346	%	6.485	%	2,050,000				2,050,000		7.2
Total / weighted average debt	6.071	%	6.228	%	$	2,921,777	(7)		$	2,839,737	6.2

(1)		Includes the effect of interest rate protection, mark-to-market accounting for certain assumed mortgages, and discounts on certain mortgages and unsecured notes. Excludes effects of offering and transaction costs.
(2)		Eight properties in Austin, TX, one property in Philadelphia, PA, two properties in Los Angeles, CA and two properties in Washington, DC.
(3)		The loan becomes prepayable on 2/7/2016.
(4)		The loan becomes prepayable on 1/31/2011. On 1/31/2011, the interest rate increases to 8.794% and the loan becomes subject to accelerated amortization. We currently intend to prepay this loan in 2011.
(5)		Interest rate is weighted average based on amounts outstanding during 2008. Interest rate on amounts outstanding as of 3/31/2008 is 3.3%.
(6)		The notes became prepayable, at par, on September 16, 2006. Interest rate is weighted average based on amounts outstanding during 2008. Interest rate on amounts outstanding as of 3/31/2008 is 3.4%.
(7)		Total debt as of 3/31/2008, net of unamortized premiums and discounts, equals $2,911,699.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

DEBT MATURITY SCHEDULE

(dollars in thousands)

	Scheduled Principal Payments During Period
	Secured			Unsecured			Unsecured						Weighted
	Fixed Rate			Floating			Fixed						Average
Year	Debt			Rate Debt			Rate Debt			Total (1)			Interest Rate
2008	$	8,175		$	—		$	—		$	8,175		6.8	%
2009	7,455			—			—			7,455			6.8	%
2010	7,841			308,000			50,000			365,841			4.7	%
2011	229,400			200,000			—			429,400			6.1	%
2012	30,566			—			200,000			230,566			7.0	%
2013	7,243			—			200,000			207,243			6.5	%
2014	15,027			—			250,000			265,027			5.7	%
2015	3,200			—			450,000			453,200			6.0	%
2016	12,490			—			400,000			412,490			6.3	%
2017	3,002			—			250,000			253,002			6.3	%
2018 and thereafter	39,378			—			250,000			289,378			6.7	%
Total	$	363,777		$	508,000		$	2,050,000		$	2,921,777		6.1	%
Percent	12.4		%	17.4		%	70.2		%	100.0		%

(1) Total debt as of 3/31/2008, net of unamortized premiums and discounts, equals $2,911,699.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

LEVERAGE RATIOS, COVERAGE RATIOS AND PUBLIC DEBT COVENANTS

	As of and For the Three Months Ended
	3/31/2008		12/31/2007		9/30/2007		6/30/2007		3/31/2007
Leverage Ratios:

Total debt / total assets	48.9	%	47.3	%	46.1	%	45.5	%	44.3	%
Total debt / gross book value of real estate assets (1)	44.8	%	43.6	%	42.7	%	42.2	%	41.5	%
Total debt / total market capitalization	58.4	%	54.4	%	48.0	%	46.4	%	42.0	%
Total debt / total book capitalization	50.4	%	48.9	%	47.7	%	46.9	%	45.6	%
Secured debt / total assets	6.1	%	6.7	%	6.9	%	7.1	%	7.3	%
Variable rate debt / total debt	17.4	%	12.3	%	8.9	%	15.8	%	21.8	%
Variable rate debt / total assets	8.5	%	5.8	%	4.1	%	7.2	%	9.7	%

Coverage Ratios:

EBITDA / interest expense	2.7	x	2.7	x	2.7	x	2.8	x	2.9	x
EBITDA / interest expense + preferred distributions	2.1	x	2.0	x	2.0	x	2.1	x	2.1	x

Public Debt Covenants (2):

Debt / adjusted total assets (maximum 60%)	43.7	%	42.6	%	41.7	%	41.3	%	40.4	%
Secured debt / adjusted total assets (maximum 40%)	5.5	%	6.1	%	6.2	%	6.5	%	6.7	%
Consolidated income available for debt service / debt service (minimum 1.5x)	2.6	x	2.7	x	2.8	x	2.9	x	2.9	x
Total unencumbered assets / unsecured debt (minimum 150% / 200%)	229.0	%	234.9	%	241.2	%	244.6	%	251.3	%

(1)		Gross book value of real estate assets is real estate properties, at cost, including purchase price allocations less impairment writedowns, if any.
(2)		Adjusted total assets and unencumbered assets includes original cost of real estate assets and excludes depreciation and amortization, accounts receivable and other intangible assets. Consolidated income available for debt service is earnings from operations excluding interest expense, depreciation and amortization, taxes, and gains and losses on sales of assets, determined together with debt service on a pro forma basis for the four consecutive fiscal quarters most recently ended.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

TENANT IMPROVEMENTS, LEASING COSTS AND CAPITAL IMPROVEMENTS

(dollars and sq. ft. in thousands, except per sq. ft. data)

	For the Three Months Ended
	3/31/2008		12/31/2007		9/30/2007		6/30/2007		3/31/2007
Tenant improvements (TI)	$	5,178	$	20,714	$	9,651	$	16,015	$	12,629
Leasing costs (LC)	3,859		3,156		6,876		7,167		4,253
Total TI and LC	9,037		23,870		16,527		23,182		16,882

Recurring building improvements (1)	1,789		5,893		3,048		3,089		1,592
Development, redevelopment and other activities (2)	3,491		6,957		5,568		15,883		7,302
Total capital improvements, including TI and LC	$	14,317	$	36,720	$	25,143	$	42,154	$	25,776

Sq. ft. beginning of period	64,456		63,928		63,571		60,251		59,865
Sq. ft. end of period	65,315		64,456		63,928		63,571		60,251
Average sq. ft. during period	64,886		64,192		63,750		61,911		60,058

Recurring building improvements per average sq. ft. during period	$	0.03	$	0.09	$	0.05	$	0.05	$	0.03

(1)		Building improvements generally include recurring expenditures that we believe are necessary to maintain the value of our properties.
(2)		Development, redevelopment and other activities generally include non-recurring expenditures or expenditures that we believe increase the value of our existing properties.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

2008 ACQUISITIONS AND DISPOSITIONS INFORMATION

(dollars and sq. ft. in thousands, except per sq. ft. amounts)

Acquisitions:

											Weighted
											Average
							Purchase				Remaining
Date		Office/	Number of		Purchase		Price (1)/		Cap		Lease	Percent
Acquired	Location	Industrial/Other	Properties	Sq. Ft.	Price (1)		Sq. Ft.		Rate (2)		Term (3)	Leased (4)		Major Tenant
Feb-08	Cleveland, OH	Office	2	878	$	123,700	$	140.89	9.0	%	8.2	90.7	%	Jones Day
	Total / Weighted Average		2	878	$	123,700	$	140.89	9.0	%	8.2	90.7	%

Dispositions:

Sale Price

Original

Multiple

Original

Sale

Purchase

of Original

Book

Date

Office/

Number of

Sale

Purchase

Price (1)/

Purchase

Gain (Loss)

Sold

Location

Industrial/Other

Properties

Sq. Ft.

Price (1)

Sq. Ft.

Price

on Sale

There were no dispositions during the three months ended March 31, 2008.

(1) Represents the gross contract purchase or sale price and excludes closing costs and purchase price allocations.

(2) Represents the ratio of the estimated current GAAP based annual rental income less property operating expenses to the Purchase Price on the date of acquisition.

(3) Average remaining lease term based on rental income as of the date acquired.

(4) Percent leased as of the date acquired.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

PORTFOLIO SUMMARY BY PROPERTY TYPE, TENANT AND MAJOR MARKET (SQUARE FEET)

(sq. ft. in thousands)

	Metro				Metro		Southern		Metro		Metro		Other
	Philadelphia, PA		Oahu, HI		Washington, DC		California		Boston, MA		Austin, TX		Markets		Total
Square Feet:
Office	5,424		—		2,658		1,444		3,100		1,492		22,086		36,204
Industrial and Other	—		17,914		—		—		—		1,236		9,961		29,111
Total	5,424		17,914		2,658		1,444		3,100		2,728		32,047		65,315

CBD	4,570		158		892		331		523		185		5,681		12,340
Suburban	854		17,756		1,766		1,113		2,577		2,543		26,366		52,975
Total	5,424		17,914		2,658		1,444		3,100		2,728		32,047		65,315

U.S. Government and other government tenants (1)	11		—		1,230		509		211		15		3,516		5,492
Medical related tenants (1)	1,125		—		359		573		1,366		360		3,490		7,273
Land leases (1)	—		16,636		—		—		—		—		—		16,636
Other investment grade tenants (1)(2)	1,833		2		58		77		312		216		7,337		9,835
Other tenants (1)	1,940		402		788		216		810		1,857		14,594		20,607
Vacant	515		874		223		69		401		280		3,110		5,472
Total	5,424		17,914		2,658		1,444		3,100		2,728		32,047		65,315

Percent by Major Market:
Office	15	%	0	%	7	%	4	%	9	%	4	%	61	%	100	%
Industrial and Other	0	%	62	%	0	%	0	%	0	%	4	%	34	%	100	%
Total	9	%	27	%	4	%	2	%	5	%	4	%	49	%	100	%

CBD	37	%	1	%	7	%	3	%	4	%	2	%	46	%	100	%
Suburban	2	%	33	%	3	%	2	%	5	%	5	%	50	%	100	%
Total	9	%	27	%	4	%	2	%	5	%	4	%	49	%	100	%

U.S. Government and other government tenants	0	%	0	%	22	%	9	%	4	%	0	%	65	%	100	%
Medical related tenants	15	%	0	%	5	%	8	%	19	%	5	%	48	%	100	%
Land leases	0	%	100	%	0	%	0	%	0	%	0	%	0	%	100	%
Other investment grade tenants (2)	19	%	0	%	1	%	1	%	3	%	2	%	74	%	100	%
Other tenants	9	%	2	%	4	%	1	%	4	%	9	%	71	%	100	%
Vacant	9	%	16	%	4	%	1	%	7	%	5	%	58	%	100	%
Total	9	%	27	%	4	%	2	%	5	%	4	%	49	%	100	%

Percent by Property Type and Tenant:
Office	100	%	0	%	100	%	100	%	100	%	55	%	69	%	55	%
Industrial and Other	0	%	100	%	0	%	0	%	0	%	45	%	31	%	45	%
Total	100	%	100	%	100	%	100	%	100	%	100	%	100	%	100	%

CBD	84	%	1	%	34	%	23	%	17	%	7	%	18	%	19	%
Suburban	16	%	99	%	66	%	77	%	83	%	93	%	82	%	81	%
Total	100	%	100	%	100	%	100	%	100	%	100	%	100	%	100	%

U.S. Government and other government tenants	0	%	0	%	46	%	35	%	7	%	1	%	11	%	8	%
Medical related tenants	21	%	0	%	14	%	40	%	44	%	13	%	11	%	11	%
Land leases	0	%	93	%	0	%	0	%	0	%	0	%	0	%	26	%
Other investment grade tenants (2)	34	%	0	%	2	%	5	%	10	%	8	%	23	%	15	%
Other tenants	35	%	2	%	30	%	15	%	26	%	68	%	45	%	32	%
Vacant	10	%	5	%	8	%	5	%	13	%	10	%	10	%	8	%
Total	100	%	100	%	100	%	100	%	100	%	100	%	100	%	100	%

(1) Sq. ft. is pursuant to signed leases as of 3/31/2008, and includes (i) space being fitted out for occupancy and (ii) space which is leased, but is not occupied or is being offered for sublease.

(2) Excludes investment grade tenants included above.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

PORTFOLIO SUMMARY BY PROPERTY TYPE, TENANT AND MAJOR MARKET (ANNUALIZED RENTAL INCOME)

(dollars in thousands)

	Metro						Metro			Southern			Metro			Metro			Other
	Philadelphia, PA			Oahu, HI			Washington, DC			California			Boston, MA			Austin, TX			Markets			Total
Annualized Rental Income (1):
Office	$	126,585		$	—		$	80,876		$	50,771		$	60,751		$	31,880		$	386,200		$	737,063
Industrial and Other	—			66,745			—			—			—			13,159			63,036			142,940
Total	$	126,585		$	66,745		$	80,876		$	50,771		$	60,751		$	45,039		$	449,236		$	880,003

CBD	$	114,422		$	1,255		$	37,404		$	22,081		$	20,144		$	5,201		$	108,348		$	308,855
Suburban	12,163			65,490			43,472			28,690			40,607			39,838			340,888			571,148
Total	$	126,585		$	66,745		$	80,876		$	50,771		$	60,751		$	45,039		$	449,236		$	880,003

U.S. Government and other government tenants	$	249		$	—		$	39,847		$	10,902		$	5,308		$	250		$	64,766		$	121,322
Medical related tenants	23,861			—			13,797			32,853			29,324			9,838			61,440			171,113
Land leases	—			60,453			—			—			—			—			—			60,453
Other investment grade tenants (2)	51,273			258			2,057			1,946			7,476			3,366			123,410			189,786
Other tenants	51,202			6,034			25,175			5,070			18,643			31,585			199,620			337,329
Total	$	126,585		$	66,745		$	80,876		$	50,771		$	60,751		$	45,039		$	449,236		$	880,003

Percent by Major Market:
Office	17		%	0		%	11		%	7		%	8		%	4		%	53		%	100		%
Industrial and Other	0		%	47		%	0		%	0		%	0		%	9		%	44		%	100		%
Total	14		%	8		%	9		%	6		%	7		%	5		%	51		%	100		%

CBD	37		%	0		%	12		%	7		%	7		%	2		%	35		%	100		%
Suburban	2		%	11		%	8		%	5		%	7		%	7		%	60		%	100		%
Total	14		%	8		%	9		%	6		%	7		%	5		%	51		%	100		%

U.S. Government and other government tenants	0		%	0		%	33		%	9		%	4		%	0		%	54		%	100		%
Medical related tenants	14		%	0		%	8		%	19		%	17		%	6		%	36		%	100		%
Land leases	0		%	100		%	0		%	0		%	0		%	0		%	0		%	100		%
Other investment grade tenants (2)	27		%	0		%	1		%	1		%	4		%	2		%	65		%	100		%
Other tenants	15		%	2		%	7		%	2		%	6		%	9		%	59		%	100		%
Total	14		%	8		%	9		%	6		%	7		%	5		%	51		%	100		%

Percent by Property Type and Tenant:
Office	100		%	0		%	100		%	100		%	100		%	71		%	86		%	84		%
Industrial and Other	0		%	100		%	0		%	0		%	0		%	29		%	14		%	16		%
Total	100		%	100		%	100		%	100		%	100		%	100		%	100		%	100		%

CBD	90		%	2		%	46		%	43		%	33		%	12		%	24		%	35		%
Suburban	10		%	98		%	54		%	57		%	67		%	88		%	76		%	65		%
Total	100		%	100		%	100		%	100		%	100		%	100		%	100		%	100		%

U.S. Government and other government tenants	0		%	0		%	49		%	21		%	9		%	1		%	15		%	14		%
Medical related tenants	19		%	0		%	17		%	65		%	48		%	22		%	14		%	19		%
Land leases	0		%	91		%	0		%	0		%	0		%	0		%	0		%	7		%
Other investment grade tenants (2)	41		%	0		%	3		%	4		%	12		%	7		%	27		%	22		%
Other tenants	40		%	9		%	31		%	10		%	31		%	70		%	44		%	38		%
Total	100		%	100		%	100		%	100		%	100		%	100		%	100		%	100		%

(1) Annualized rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.

(2) Excludes investment grade tenants included above.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

SUMMARY OF PROPERTIES BY MAJOR MARKET

(dollars and sq. ft. in thousands)

	As of 3/31/2008				Annualized		% of Annualized
Market	Properties	Sq. Ft.	% Sq. Ft.		Rental Income (1)		Rental Income (1)
Metro Philadelphia, PA	21	5,424	8.3	%	$	126,585	14.4	%
Oahu, HI	57	17,914	27.4	%	66,745		7.6	%
Metro Washington, DC	20	2,658	4.1	%	80,876		9.2	%
Southern California	24	1,444	2.2	%	50,771		5.8	%
Metro Boston, MA	39	3,100	4.7	%	60,751		6.9	%
Metro Austin, TX	26	2,728	4.2	%	45,039		5.1	%
Other markets	350	32,047	49.1	%	449,236		51.0	%
Total	537	65,315	100.0	%	$	880,003	100.0	%

	Percent NOI For the Three Months Ended (2)
	3/31/2008		12/31/2007		9/30/2007		6/30/2007		3/31/2007
Metro Philadelphia, PA	13.2	%	12.4	%	12.8	%	12.7	%	12.8	%
Oahu, HI	10.1	%	9.6	%	10.1	%	9.9	%	9.8	%
Metro Washington, DC	9.4	%	9.6	%	9.5	%	9.6	%	9.9	%
Southern California	6.9	%	6.7	%	6.9	%	7.0	%	7.4	%
Metro Boston, MA	6.6	%	8.6	%	8.3	%	8.3	%	8.0	%
Metro Austin, TX	4.8	%	4.2	%	4.5	%	4.0	%	4.6	%
Other markets	49.0	%	48.9	%	47.9	%	48.5	%	47.5	%
Total	100.0	%	100.0	%	100.0	%	100.0	%	100.0	%

(1)		Annualized rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.
(2)		NOI, or property net operating income, is defined as property rental income less property operating expenses; see page 14 for calculation of NOI and reconciliation of NOI to Net Income Available for Common Shareholders. Prior periods reflect amounts previously reported and excludes retroactive adjustments for properties reclassified in discontinued operations in the current period.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

LEASING SUMMARY

(dollars and sq. ft. in thousands, except per sq. ft. data)

	As of and For the Three Months Ended (1)
	3/31/2008			12/31/2007			9/30/2007			6/30/2007			3/31/2007
Properties	537			535			530			524			508
Total sq. ft. (2)	65,315			64,456			63,928			63,571			60,251
Percentage leased	91.6		%	92.9		%	92.8		%	92.9		%	92.8		%

Leasing Activity (sq. ft.):
New leases	273			405			248			814			410
Renewals	553			833			1,235			1,107			654
Total	826			1,238			1,483			1,921			1,064

% Change in GAAP Rent (3):
New leases	2		%	12		%	26		%	8		%	-1		%
Renewals	3		%	2		%	6		%	0		%	3		%
Weighted average	2		%	5		%	9		%	3		%	1		%

Capital Commitments (4):
New leases	$	6,325		$	6,583		$	3,420		$	24,074		$	13,158
Renewals	3,091			4,969			14,204			10,936			5,184
Total	$	9,416		$	11,552		$	17,624		$	35,010		$	18,342

Capital Commitments per Sq. Ft. (4):
New leases	$	23.17		$	16.25		$	13.79		$	29.57		$	32.09
Renewals	$	5.59		$	5.97		$	11.50		$	9.88		$	7.93
Total	$	11.40		$	9.33		$	11.88		$	18.22		$	17.24

Weighted Average Lease Term by Sq. Ft. (years):
New leases	6.0			6.3			5.0			8.2			8.6
Renewals	5.4			5.3			8.3			7.7			5.8
Total	5.6			5.6			7.7			7.9			6.7

Capital Commitments per Sq. Ft. per Year:
New leases	$	3.86		$	2.58		$	2.76		$	3.61		$	3.73
Renewals	$	1.04		$	1.13		$	1.39		$	1.28		$	1.37
Total	$	2.04		$	1.67		$	1.54		$	2.31		$	2.57

(1) Results exclude properties classified in discontinued operations.

(2) Sq. ft. measurements are subject to modest changes when space is re-measured or re-configured for new tenants.

(3) Percent difference in prior rents charged for same space. Rents include expense reimbursements and exclude lease value amortization.

(4) Represents commitments to tenant improvements (TI) and leasing costs (LC).

The above leasing summary is based on leases executed during the periods indicated.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

OCCUPANCY AND LEASING ANALYSIS BY PROPERTY TYPE AND MAJOR MARKET (3 MONTHS ENDED 3/31/2008)

(dollars and sq. ft. in thousands)

	Sq. Ft. Leases Executed During
	Three Months Ended 3/31/2008
	Total Sq. Ft.
	As of
Property Type/Market	3/31/2008	New	Renewals	Total
Office	36,204	252	328	580
Industrial and Other	29,111	21	225	246
Total	65,315	273	553	826

CBD	12,340	84	125	209
Suburban	52,975	189	428	617
Total	65,315	273	553	826

Metro Philadelphia, PA	5,424	48	17	65
Oahu, HI	17,914	6	—	6
Metro Washington, DC	2,658	10	1	11
Southern California	1,444	31	64	95
Metro Boston, MA	3,100	4	3	7
Metro Austin, TX	2,728	26	4	30
Other markets	32,047	148	464	612
Total	65,315	273	553	826

	Sq. Ft. Leased
	As of	12/31/2007				New and	Acquisitions /	As of	3/31/2008
	12/31/2007	% Leased (1)		Expired		Renewals	(Sales)	3/31/2008	% Leased
Office	31,824	90.0	%	(943	)	580	797	32,258	89.1	%
Industrial and Other	28,073	96.4	%	(734	)	246	—	27,585	94.8	%
Total	59,897	92.9	%	(1,677	)	826	797	59,843	91.6	%

CBD	10,359	90.2	%	(230	)	209	797	11,135	90.2	%
Suburban	49,538	93.5	%	(1,447	)	617	—	48,708	91.9	%
Total	59,897	92.9	%	(1,677	)	826	797	59,843	91.6	%

Metro Philadelphia, PA	4,898	90.0	%	(54	)	65	—	4,909	90.5	%
Oahu, HI	17,453	97.4	%	(419	)	6	—	17,040	95.1	%
Metro Washington, DC	2,427	91.3	%	(3	)	11	—	2,435	91.6	%
Southern California	1,354	93.8	%	(74	)	95	—	1,375	95.2	%
Metro Boston, MA	2,990	96.5	%	(298	)	7	—	2,699	87.1	%
Metro Austin, TX	2,463	90.3	%	(45	)	30	—	2,448	89.7	%
Other markets	28,312	90.8	%	(784	)	612	797	28,937	90.3	%
Total	59,897	92.9	%	(1,677	)	826	797	59,843	91.6	%

(1) Based on total sq. ft. as of December 31, 2007; excludes acquisitions and effects of space remeasurements during the period.

We define our major markets as markets which currently, or during either of the last two quarters, constitute 5% or more of our leaseable square feet, rental income or NOI. Major markets are based on geographic market areas as defined by CoStar, except for the Metro Philadelphia, PA market which excludes Wilmington, DE. Southern California includes properties located in the Los Angeles, San Diego and Orange County markets, as defined by CoStar. Oahu, HI includes all properties located on the island of Oahu.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

THREE YEAR LEASE EXPIRATION SCHEDULE BY PROPERTY TYPE

(dollars and sq. ft. in thousands)

	Total as of 3/31/2008			2008			2009			2010			2011 and Thereafter

Office:
Total sq. ft.	36,204
Leased sq. ft. (1)	32,258			2,811			2,814			3,675			22,958
Percent	100.0		%	8.7		%	8.7		%	11.4		%	71.2		%
Annualized rental income (2)	$	737,063		$	63,064		$	62,932		$	81,670		$	529,397
Percent	100.0		%	8.6		%	8.5		%	11.1		%	71.8		%

Industrial and Other:
Total sq. ft.	29,111
Leased sq. ft. (1)	27,585			939			995			2,796			22,855
Percent	100.0		%	3.4		%	3.6		%	10.1		%	82.9		%
Annualized rental income (2)	$	142,940		$	6,475		$	6,396		$	19,777		$	110,292
Percent	100.0		%	4.5		%	4.5		%	13.8		%	77.2		%

CBD:
Total sq. ft.	12,340
Leased sq. ft. (1)	11,135			966			759			854			8,556
Percent	100.0		%	8.7		%	6.8		%	7.7		%	76.8		%
Annualized rental income (2)	$	308,855		$	23,884		$	23,325		$	25,778		$	235,868
Percent	100.0		%	7.7		%	7.6		%	8.3		%	76.4		%

Suburban:
Total sq. ft.	52,975
Leased sq. ft. (1)	48,708			2,784			3,050			5,617			37,257
Percent	100.0		%	5.7		%	6.3		%	11.5		%	76.5		%
Annualized rental income (2)	$	571,148		$	45,655		$	46,003		$	75,669		$	403,821
Percent	100.0		%	8.0		%	8.1		%	13.2		%	70.7		%

Total:
Total sq. ft.	65,315
Leased sq. ft. (1)	59,843			3,750			3,809			6,471			45,813
Percent	100.0		%	6.3		%	6.4		%	10.8		%	76.5		%
Annualized rental income (2)	$	880,003		$	69,539		$	69,328		$	101,447		$	639,689
Percent	100.0		%	7.9		%	7.9		%	11.5		%	72.7		%

(1)		Sq. ft. is pursuant to signed leases as of 3/31/2008, and includes (i) space being fitted out for occupancy and (ii) space which is leased, but is not occupied or is being offered for sublease.
(2)		Annualized rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

THREE YEAR LEASE EXPIRATION SCHEDULE BY MAJOR MARKET

(dollars and sq. ft. in thousands)

	Total as of 3/31/2008			2008			2009			2010			2011 and Thereafter
Metro Philadelphia, PA:
Total sq. ft.	5,424
Leased sq. ft. (1)	4,909			430			277			338			3,864
Percent	100.0		%	8.8		%	5.6		%	6.9		%	78.7		%
Annualized rental income (2)	$	126,585		$	10,339		$	6,159		$	8,228		$	101,859
Percent	100.0		%	8.2		%	4.9		%	6.5		%	80.4		%
Oahu, HI:
Total sq. ft.	17,914
Leased sq. ft. (1)	17,040			516			264			312			15,948
Percent	100.0		%	3.0		%	1.5		%	1.8		%	93.7		%
Annualized rental income (2)	$	66,745		$	3,148		$	1,127		$	1,666		$	60,804
Percent	100.0		%	4.7		%	1.7		%	2.5		%	91.1		%
Metro Washington, DC:
Total sq. ft.	2,658
Leased sq. ft. (1)	2,435			62			144			242			1,987
Percent	100.0		%	2.5		%	5.9		%	9.9		%	81.7		%
Annualized rental income (2)	$	80,876		$	2,146		$	5,497		$	8,376		$	64,857
Percent	100.0		%	2.7		%	6.8		%	10.4		%	80.1		%
Southern California:
Total sq. ft.	1,444
Leased sq. ft. (1)	1,375			223			166			119			867
Percent	100.0		%	16.2		%	12.1		%	8.7		%	63.0		%
Annualized rental income (2)	$	50,771		$	5,706		$	6,854		$	5,440		$	32,771
Percent	100.0		%	11.2		%	13.5		%	10.7		%	64.6		%
Metro Boston, MA:
Total sq. ft.	3,100
Leased sq. ft. (1)	2,699			107			32			83			2,477
Percent	100.0		%	4.0		%	1.2		%	3.1		%	91.7		%
Annualized rental income (2)	$	60,751		$	3,097		$	1,023		$	2,575		$	54,056
Percent	100.0		%	5.1		%	1.7		%	4.2		%	89.0		%
Metro Austin, TX:
Total sq. ft.	2,728
Leased sq. ft. (1)	2,448			127			151			493			1,677
Percent	100.0		%	5.2		%	6.2		%	20.1		%	68.5		%
Annualized rental income (2)	$	45,039		$	2,893		$	2,966		$	9,577		$	29,603
Percent	100.0		%	6.4		%	6.6		%	21.3		%	65.7		%
Other markets:
Total sq. ft.	32,047
Leased sq. ft. (1)	28,937			2,285			2,775			4,884			18,993
Percent	100.0		%	7.9		%	9.6		%	16.9		%	65.6		%
Annualized rental income (2)	$	449,236		$	42,210		$	45,702		$	65,585		$	295,739
Percent	100.0		%	9.4		%	10.2		%	14.6		%	65.8		%
Total:
Total sq. ft.	65,315
Leased sq. ft. (1)	59,843			3,750			3,809			6,471			45,813
Percent	100.0		%	6.3		%	6.4		%	10.8		%	76.5		%
Annualized rental income (2)	$	880,003		$	69,539		$	69,328		$	101,447		$	639,689
Percent	100.0		%	7.9		%	7.9		%	11.5		%	72.7		%

(1)		Sq. ft. is pursuant to signed leases as of 3/31/2008, and includes (i) space being fitted out for occupancy and (ii) space which is leased, but is not occupied or is being offered for sublease.
(2)		Annualized rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.

We define our major markets as markets which currently, or during either of the last two quarters, constitute 5% or more of our leaseable square feet, rental income or NOI. Major markets are based on geographic market areas as defined by CoStar, except for the Metro Philadelphia, PA market which excludes Wilmington, DE. Southern California includes properties located in the Los Angeles, San Diego and Orange County markets, as defined by CoStar. Oahu, HI includes all properties located on the island of Oahu.

HRPT Properties Trust

Supplemental Operating and Financial Data

March 31, 2008

PORTFOLIO LEASE EXPIRATION SCHEDULE

(dollars and sq. ft. in thousands)

										Cumulative %
	Sq. Ft. Expiring (1)	% of Sq. Ft. Expiring		Cumulative % of Sq. Ft. Expiring		Annualized Rental Income Expiring (2)		% of Annualized Rental Income Expiring		of Annualized Rental Income Expiring
2008	3,750	6.3	%	6.3	%	$	69,539	7.9	%	7.9	%
2009	3,809	6.4	%	12.7	%	69,328		7.9	%	15.8	%
2010	6,471	10.8	%	23.5	%	101,447		11.5	%	27.3	%
2011	5,599	9.4	%	32.9	%	97,868		11.1	%	38.4	%
2012	5,418	9.0	%	41.9	%	107,925		12.3	%	50.7	%
2013	4,133	6.9	%	48.8	%	66,866		7.6	%	58.3	%
2014	2,915	4.9	%	53.7	%	51,437		5.8	%	64.1	%
2015	3,507	5.9	%	59.6	%	63,062		7.2	%	71.3	%
2016	2,965	4.9	%	64.5	%	48,285		5.5	%	76.8	%
2017	1,846	3.1	%	67.6	%	37,147		4.2	%	81.0	%
2018 and thereafter	19,430	32.4	%	100.0	%	167,099		19.0	%	100.0	%
Total	59,843	100.0	%			$	880,003	100.0	%

Weighted average remaining lease term (in years)	8.7					6.3

(1)		Sq. ft. is pursuant to signed leases as of 3/31/2008, and includes (i) space being fitted out for occupancy and (ii) space which is leased, but is not occupied or is being offered for sublease.
(2)		Annualized rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.

		Page

CORPORATE INFORMATION

	Company Profile	5
	Investor Information	6
	Research Coverage	7

FINANCIAL INFORMATION

	Key Financial Data	9
	Consolidated Balance Sheets	10
	Consolidated Statements of Income	11
	Consolidated Statements of Cash Flows	12
	Calculation of EBITDA	13
	Calculation and Reconciliation of Property Net Operating Income (NOI)	14
	Calculation of Funds from Operations (FFO)	15
	Calculation of Diluted Net Income, FFO and Weighted Average Common Shares Outstanding	16
	Summary Results of Operations by Property Type	17
	Summary Results of Operations by Major Market	18
	Same Property Results and Analysis by Property Type	19
	Same Property Results and Analysis by Major Market	20
	Debt Summary	21
	Debt Maturity Schedule	22
	Leverage Ratios, Coverage Ratios and Public Debt Covenants	23
	Tenant Improvements, Leasing Costs and Capital Improvements	24
	2008 Acquisitions and Dispositions Information	25
	2008 Financing Activities	26

PORTFOLIO AND LEASING INFORMATION

	Portfolio Summary by Property Type, Tenant and Major Market (Square Feet)	28
	Portfolio Summary by Property Type, Tenant and Major Market (Annualized Rental Income)	29
	Summary of Properties by Major Market	30
	Leasing Summary	31
	Occupancy and Leasing Analysis by Property Type and Major Market (3 Months Ended 3/31/2008)	32
	Tenants Representing 1% or More of Total Rent	33
	Three Year Lease Expiration Schedule by Property Type	34
	Three Year Lease Expiration Schedule by Major Market	35
	Portfolio Lease Expiration Schedule	36

	For the Three Months Ended
	3/31/2008
Debt Transactions (1):
New debt raised	$	—
New debt assumed as part of acquisitions	$	—
Total new debt	—

Debt retired	$	(28,600	)
Net debt	$	(28,600	)

Equity Transactions:
New common shares issued	—
New common equity raised, net	$	—

New preferred shares issued	—
New preferred equity raised, net	$	—
Total new equity	$	—

Preferred equity retired	$	—
Net equity	$	—

		% of Total		% of Rental
Tenant	Sq. Ft. (1)	Sq. Ft. (1)		Income (2)		Expiration
1 U.S. Government	4,820	8.1	%	12.5	%	2008 to 2020
2 GlaxoSmithKline plc	608	1.0	%	1.7	%	2013
3 PNC Financial Services Group	460	0.8	%	1.3	%	2011, 2021
4 Jones Day (law firm)	407	0.7	%	1.3	%	2012, 2019
5 Flextronics International Ltd.	894	1.5	%	1.2	%	2014
6 The Scripps Research Institute	164	0.3	%	1.0	%	2019
7 JDA Software Group, Inc.	283	0.5	%	1.0	%	2012
Total	7,636	12.9	%	20.0	%

(1)		Sq. ft. is pursuant to signed leases as of 3/31/2008, and includes (i) space being fitted out for occupancy and (ii) space which is leased, but is not occupied or is being offered for sublease.
(2)		Rental income is rents pursuant to signed leases as of 3/31/2008, plus expense reimbursements; includes some triple net lease rents and excludes lease value amortization.