EXHIBIT 12.2

Corporate Office Properties, L.P.

Ratio of Earnings to Fixed Charges

(Dollars in thousands)

	Years Ended December 31,
Earnings:	2016			2015			2014			2013			2012
(Loss) income from continuing operations before equity in income (loss) of unconsolidated entities and income taxes	$	(26,419	)	$	120,812		$	34,590		$	36,704		$	8,894
Gain on sales of real estate, excluding discontinued operations	40,986			68,047			10,671			9,016			21
Fixed charges (from below)	89,584			96,867			99,243			99,676			111,825
Amortization of capitalized interest	2,715			2,591			2,374			1,977			1,798
Distributed income of equity investees	732			361			225			1,857			—
Subtract:
Capitalized interest (from below)	(5,723		)	(7,151		)	(6,065		)	(8,785		)	(13,903		)
Preferred distributions of other consolidated entities	(16		)	(16		)	(16		)	(16		)	—
Total earnings	$	101,859		$	281,511		$	141,022		$	140,429		$	108,635
Fixed charges:
Interest expense on continuing operations	$	83,163		$	89,074		$	92,393		$	82,010		$	86,401
Interest expense on discontinued operations	—			—			—			8,221			10,397
Capitalized interest (internal and external)	5,723			7,151			6,065			8,785			13,903
Amortization of debt issuance costs-capitalized	—			8			186			144			649
Interest included in rental expense	682			618			583			500			475
Preferred distributions of other consolidated entities	16			16			16			16			—
Total fixed charges	$	89,584		$	96,867		$	99,243		$	99,676		$	111,825
Ratio of earnings to fixed charges	1.14			2.91			1.42			1.41			0.97
Deficiency													$	3,190

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 from continuing operations 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.