"Buchanan Partners," says company Principal Brian Benninghoff, "will continue to maintain an ownership position while providing property management services to the complex." The similarly-sized buildings account for a total 300,000 sf of office space.

Buchanan, joined by two associates, developed the Lakeside complex over the past three years. The compound sits in an area of Virginia that is peppered with high-tech leaders such as America Online and MCI Worldcom. Verisign is the sole occupant of the 102,000-sf Lakeside II building.

In another joint-venture deal, Stone Hedge and Buchanan recently broke ground on a single-story building in the Dulles Trade Center near Washington-Baltimore's Dulles International Airport.