The building was on the market for only 90 days and closed in 75 days, Jerry M. Levit, a senior director of the North Carolina office of Advantis Real Estate Services Co./GVA, tells GlobeSt.com. He says he hasn't heard of a higher per-sf office price this year. The seller was Ralden II Limited Partnership of Baltimore, MD.

"This sale demonstrates the attractiveness of leases backed by the United States government," Levit says. "In this time of economic and corporate instability, General Services Administration leases remain a particularly attractive low-risk investment." GSA is the country's largest office landlord, leasing space for all of the federal government's agencies.

On the premium $137.44 per-sf price, Levit says, "Despite the highly specialized nature of the building, we were able to achieve an aggressive sales price was due, in part, to the low interest rate environment in which we find ourselves."