The area around Dulles Airport added office space at a rapid rate from 1999 to 2002, but growth slowed as vacancy soared. Construction in the area is booming again but heading for a pause. (Source: CoStar Group Inc.)

The workforce within eight miles of Dulles Airport grew 24 percent from 2000 to 2007. How employment in the area's largest industries has changed. (SOURCE: ESRI analysis of InfoUSA data)

Developers have added office space around Dulles Airport in two distinct phases. From 1998 to 2002, buildings were opened to satisfy demand created by the tech boom, although some of that space did not become available for lease until the tech boom's end. From 2003 to 2007, developers added space to meet demand from federal contractors, whose business increased as the government spent more on national security programs. (Source: CoStar Group Inc.)