EXHIBIT 12.2

Corporate Office Properties, L.P.

Ratio of Earnings to Fixed Charges

(Dollars in thousands)

		Years Ended December 31,
Earnings:		2017				2016				2015				2014				2013
Income (loss) before equity in income of unconsolidated entities and income taxes		$	64,659			$	(26,419	)		$	120,812			$	34,590			$	36,704
Gain on sales of real estate		9,890				40,986				68,047				10,671				9,016
Fixed charges (from below)		82,858				89,584				96,867				99,243				99,676
Amortization of capitalized interest		2,631				2,715				2,591				2,374				1,977
Distributed income of equity investees		1,496				732				361				225				1,857
Subtract:
Capitalized interest (from below)		(5,229		)		(5,723		)		(7,151		)		(6,065		)		(8,785		)
Preferred distributions of other consolidated entities		(16		)		(16		)		(16		)		(16		)		(16		)
Total earnings		$	156,289			$	101,859			$	281,511			$	141,022			$	140,429
Fixed charges:
Interest expense on continuing operations		$	76,983			$	83,163			$	89,074			$	92,393			$	82,010
Interest expense on discontinued operations		—				—				—				—				8,221
Capitalized interest (internal and external)		5,229				5,723				7,151				6,065				8,785
Amortization of debt issuance costs-capitalized		—				—				8				186				144
Interest included in rental expense		630				682				618				583				500
Preferred distributions of other consolidated entities		16				16				16				16				16
Total fixed charges		$	82,858			$	89,584			$	96,867			$	99,243			$	99,676
Ratio of earnings to fixed charges		1.89				1.14				2.91				1.42				1.41

For purposes of calculating the above ratios, earnings were computed by adding fixed charges (excluding capitalized interest), gain on sales of real estate (excluding discontinued operations), amortization of capitalized interest and distributed income of equity investees to income before noncontrolling interests, equity in income of unconsolidated entities and income taxes. Fixed charges consist of interest costs and capitalized amortization of debt issuance costs.