Exhibit 12

WASHINGTON REAL ESTATE INVESTMENT TRUST

Computation of Ratio of Earnings to Fixed Charges

(In thousands)

	Q3 2009			Q3 2008			YTD 2009			YTD 2008
Income from continuing operations	$	4,229		$	3,945		$	20,520		$	3,274
Additions:
Fixed charges
Interest expense		18,224			18,447			57,221			56,187
Capitalized interest		345			477			1,003			2,049
		18,569			18,924			58,224			58,236
Deductions:
Capitalized interest		(345	)		(477	)		(1,003	)		(2,049	)
Net income attributable to noncontrolling interests		(53	)		(48	)		(154	)		(158	)
Adjusted earnings	$	22,400		$	22,344		$	77,587		$	59,303
Fixed Charges (from above)	$	18,569		$	18,924		$	58,224		$	58,236
Ratio of Earnings to Fixed Charges		1.21			1.18			1. 33			1.02