Annual report pursuant to Section 13 and 15(d)

Concentration of Revenue

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Concentration of Revenue
12 Months Ended
Dec. 31, 2018
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 24% of our rental revenue in 2018, 22% in 2017 and 21% in 2016 (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 Northern Virginia Defense/IT reportable sub-segments (see Note 17). No other individual tenants accounted for 10% or more of our revenue from real estate operations. We also derived 95% of our construction contract revenue from the United States Government in 2018, 98% in 2017 and 87% in 2016.

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