The Builders Exchange of Central Ohio advances the commercial construction industry as the resource for communication, education, services and recognition. The Builders Exchange of Central Ohio advances the commercial construction industry as the resource for communication, education, services and recognition. THE BUILDERS EXCHANGE OF CENTRAL OHIO (BX) ADVANCES THE COMMERCIAL CONSTRUCTION INDUSTRY AS THE RESOURCE FOR COMMUNICATION, EDUCATION, SERVICES AND RECOGNITION. THE CORE PURPOSE OF BX IS TO UNIFY AND ADVANCE THE CONSTRUCTION COMMUNITY.