Abstract: A connector for connecting an add on building structure to a rim board of an original building structure, including a connector rod including an elongated hollow intermediate portion and smaller breadth externally threaded extensions extending from ends of the hollow intermediate portion. The first externally threaded extension is a length to extend through an opening in the rim board that aligns with an opening in the ledger board, and internally threaded sockets are threaded onto the externally threaded extensions at a positions straddling the rim board at one end and a supportive member within the joists of the add on building structure at the other end for holding add on building at a desired distance from the rim board and preventing rotation of the connector rod.

Abstract: A bracket includes a connector rod for mounting through aligned openings in a rim board of an original building structure and through the ledger board of an adjacent add-on building structure. The connector rod includes a stabilizer end of a length extending beyond the rim board and ledger board for connection to a support structure displaced from the rim board and ledger board. The fasteners there against the rim board, the ledger board, and a third fastener is displaced from the rim and ledger boards for connection to a supported structure.