CONYERS, GA. — Block Income Fund III has purchased a 111,540-square-foot office/warehouse building, located at 801 Blacklawn Rd. in Conyers, from First Industrial Partnership, for $5 million. Current tenants include Bio-Lab, CTGA, Diversitech and Teijan Twaron USA. The building consists of 18 percent office space and one dock-high door per each 4,840 square feet. Bobby Mayson of Atlanta-based Lavista Associates represented the seller.