Schedule III Real Estate and Accumulated Depreciation

12 Months Ended

Dec. 31, 2015

Schedule III Real Estate and Accumulated Depreciation

Schedule III Real Estate and Accumulated Depreciation

CoreSite Realty Corporation
Schedule III
Real Estate and Accumulated Depreciation
December 31, 2015
(in thousands)

								Gross Amount Carried at December 31, 2015
		Initial Cost				Costs Capitalized Subsequent to Acquisition								Accumulated Depreciation at December 31, 2015
Property Name	Location	Land		Building and Improvements				Land		Building and Improvements		Total				Year Acquired or Leased
	(In thousands)
BO1	Somerville, MA	$	6,100	$	26,748	$	64,882	$	5,154	$	92,576	$	97,730	$	36,496		2007
CH1	Chicago, IL		5,493		49,522		45,921		5,493		95,443		100,936		22,195		2010
DC1	Washington, DC		—		4,797		3,462		—		8,259		8,259		4,399		2010
DE1	Denver, CO		—		37		3,308		—		3,345		3,345		827		2012
DE2	Denver, CO		—		4		1,068		—		1,072		1,072		617		2012
LA1	Los Angeles, CA		—		41,099		28,321		—		69,420		69,420		26,029		2010
LA2	Los Angeles, CA		28,467		94,114		56,760		28,467		150,874		179,341		32,492		2010
MI1	Miami, FL		728		9,325		1,094		728		10,419		11,147		2,362		2010
NY1	New York, NY		—		—		35,083		—		35,083		35,083		16,677		2007
NY2	Secaucus, NJ		4,952		18,408		108,230		2,388		129,202		131,590		8,096		2013
SV1	San Jose, CA		6,863		91,719		37,686		6,863		129,405		136,268		23,462		2010
SV2	Milpitas, CA		5,086		5,046		22,504		5,086		27,550		32,636		14,883		2006
SV3	Santa Clara, CA		4,162		3,482		46,464		3,972		50,136		54,108		24,992		2007
SV4	Santa Clara, CA		4,632		3,716		90,182		4,501		94,029		98,530		22,683		2007
SV5	Santa Clara, CA		2,572		—		23,486		2,544		23,514		26,058		1,245		2007
SV6	Santa Clara, CA		4,741		—		25,500		—		30,241		30,241		—		2007
SV7	Santa Clara, CA		3,793		—		29,673		—		33,466		33,466		—		2007
VA1	Reston, VA		6,903		32,939		87,806		6,903		120,745		127,648		43,211		2007
VA2	Reston, VA		5,197		—		113,060		2,720		115,537		118,257		3,553		2007
	Total	$	89,689	$	380,956	$	824,490	$	74,819	$	1,220,316	$	1,295,135	$	284,219

        None of our properties are encumbered.

        The aggregate cost of the total properties for federal income tax purposes was approximately $1,147.4 million (unaudited) at December 31, 2015.

CoreSite Realty Corporation
Schedule III
Real Estate and Accumulated Depreciation (Continued)
December 31, 2015

        The following table reconciles the historical cost and accumulated depreciation of our properties for the years ended December 31, 2015, 2014, and 2013:

	Year Ended December 31,
	2015		2014			2013
	(In thousands)
Property
Balance, beginning of period	$	1,146,548	$	1,048,525		$	829,508
Additions—property acquisitions		—		—			23,360
Additions—improvements		148,587		98,969			195,657
Deduction—cost of land disposal		—		(946	)		—
Balance, end of period	$	1,295,135	$	1,146,548		$	1,048,525
Accumulated Depreciation
Balance, beginning of period	$	215,978	$	155,704		$	105,433
Additions, net of disposals		68,241		60,274			50,271
Balance, end of period	$	284,219	$	215,978		$	155,704