RADNOR, PA. — Keystone Property Group has leased Keystone Executive Center in Radnor to Main Line Health. The tenant plans to consolidate most of its corporate offices and its Home Care Network into the two-story, 100,462-square-foot office building, which is located at the intersection of Route 30 and Interstate 476. The new lease is valued at $22.8 million. Mark Gola of Gola Corporate Real Estate represented Main Line Health. Keystone was represented by Jeff Mack of GVA Smith Mack. Financing was provided by Sovereign Bank.