PMC Realty Group, based out of Philadelphia, purchased the 3600 Centre at 3600 West Broad Street in Henrico County for $4.8 million. The seller of the 250,000-square-foot office building was Penn Market Properties. The building was originally constructed in 1958 as the corporate headquarters for Seaboard Air Line Railroad but had been operated as a multi-tenant office building for the past several decades. The new owner plans on retaining commercial office and retail tenants on the lower levels while converting the upper six floors to apartments. Cushman & Wakefield | Thalhimer in Richmond combined with Cushman and Wakefield’s Washington, D.C., office to handle the disposition for the seller.