Annual report pursuant to Section 13 and 15(d)

Concentration of Revenue

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Concentration of Revenue
12 Months Ended
Dec. 31, 2017
Risks and Uncertainties [Abstract]  
Concentration of Revenue
Concentration of Revenue

A large concentration of our revenue from real estate operations was earned from our largest tenant, the United States Government, including 22% of our rental revenue in 2017, 21% in 2016 and 20% in 2015 (continuing and discontinued operations, and excluding tenant recoveries and other real estate operations revenue). Our rental revenue from the United States Government was earned primarily from properties in the Fort Meade/BW Corridor, Lackland Air Force Base and Navy Support Locations business sub-segments (see Note 17). No other individual tenants accounted for 10% or more of our revenue from real estate operations. We also derived more than 80% of our construction contract revenue from the United States Government in 2017, 2016 and 2015.

We derived large concentrations of our revenue from real estate operations from certain business segments as set forth in Note 17.