Noncontrolling Interests - Operating Partnership (Tables)

12 Months Ended

Dec. 31, 2016

Noncontrolling Interests - Operating Partnership

Schedule of ownership interests in our Operating Partnership

	December 31, 2016			December 31, 2015
	Number of Units	Percentage of Total		Number of Units	Percentage of Total
CoreSite Realty Corporation	33,376,568	70.7	%	30,136,556	64.1	%
Noncontrolling interests	13,851,347	29.3		16,858,347	35.9
Total	47,227,915	100.0	%	46,994,903	100.0	%