Exhibit 12.2

HRPT PROPERTIES TRUST

COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DISTRIBUTIONS

(dollars in thousands)

	Nine Months Ended September 30,						Year Ended December 31,
	2005			2004			2004			2003			2002			2001			2000
Earnings:
Income before equity in earnings and gain (loss) on equity transactions of equity investments	$	106,630		$	89,856		$	117,386		$	90,921		$	88,923		$	87,510		$	108,992
Fixed charges before preferred distributions	105,967			82,849			118,212			101,144			89,417			91,305			104,337
Distributions from equity investments	16,954			18,601			24,572			27,404			27,195			26,651			30,294
Capitalized interest	—			—			—			—			(3,057		)	(787		)	(1,680		)
Adjusted Earnings	$	229,551		$	191,306		$	260,170		$	219,469		$	202,478		$	204,679		$	241,943
Fixed Charges and Preferred Distributions:
Interest expense (including amortization of note discounts and premiums and deferred financing fees)	$	105,967		$	82,849		$	118,212		$	101,144		$	86,360		$	90,518		$	102,657
Capitalized interest	—			—			—			—			3,057			787			1,680
Preferred distributions	34,500			34,500			46,000			46,000			27,625			16,842			—
Combined Fixed Charges and Preferred Distributions	$	140,467		$	117,349		$	164,212		$	147,144		$	117,042		$	108,147		$	104,337
Ratio of Earnings to Combined Fixed Charges and Preferred Distributions	1.6		x	1.6		x	1.6		x	1.5		x	1.7		x	1.9		x	2.3		x

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