Boston Building Materials Co-op is a not-for-profit consumer co-op that is open to the public. Unlike commercial stores, we are not in business to make a profit. Our purpose is to provide high quality materials at a reasonable cost and to teach people how to maintain and improve their homes. BBMC belongs to—and is governed by—its members. ANYONE CAN JOIN! You don't have to be a member to shop at the Co-op, but members enjoy lower prices and other benefits. In general, BBMC sells products represented by the following categories: window repair, kitchen and bath, windows and doors, storm products, weatherization, and green products. At BBMC you get great advice. Not a sales pitch—just good, reliable, clear information. Check our company's ratings at Angie's List. To find out more about green cabinets offered at the BBMC, click here.