The 27-story Ten Penn Center office tower in Center City is hitting the market. Owners Sterling Equities and Greenville Partners are listing the 668,000-square-foot building at 1801 Market St. The property, built in 1981 and purchased for $75 million in 2006, was most recently assessed at $122.8 million. It is currently 60% occupied, per CoStar.

JLL brokers marketing the tower highlight it as the largest Market Street office building to hit the market since the pandemic. They are promoting potential for a partial residential conversion on the upper floors and leasing opportunities for office and retail space below.

Morgan Lewis & Bockius vacated 105,000 square feet of back office space last year after relocating to its new headquarters at 2222 Market St.