WETHERSFIELD, CONN. — Phil Gagnon of Colliers International has brokered the $2.1 million sale of a 44,000-square-foot office building in Wethersfield. The Class B building is located at 936 Silas Deane Highway. Gagnon represented the buyer, CT Peer Review Organization (CPRO), in the transaction. CPRO will occupy a portion of the building and plans to complete upgrades to the facility. Patrick Mulready of CBRE represented the seller, PBE Cos.