The property currently contains two joined buildings and two others, all constructed between 1960 and 1970, which aggregate 960,349 sf. It is zoned to accommodate up to an additional 1.2 million sf of office development.

Unisys once occupied the entire complex, but has downsized to approximately 540,000 sf and sublet another 220,000 sf to Merck & Co. One 200,000-sf building is currently vacant, Clay Hamlin, vice chairman of Corporate Office Properties, tells GlobeSt.com. "The Unisys lease expires on July 1, 2009," he says, "but has two five-year options to renew at pretty attractive rates," which he did not disclose, but says, "are well below market. Although Unisys might extend, that's doubtful. Merck has made a substantial investment in its space and would have the option to extend, but we're not sure what either is going to do."

The property is on the market, Hamlin says, "because it's our only property in the Philadelphia area, and we tend to sell 'outliers,' that is, properties not in areas where we have a heavy presence, such as the Baltimore/Washington area. We have a plan for this park," he adds, "but have not exercised it while it is under lease to Unisys."