 Builders First Source is the preferred supplier of building materials and services to professional builders and do-it-yourselfers across the nation. Offering a knowledgeable team and outstanding products and service to every customer. You are invited to stop in to browse the options in flooring, kitchens, baths, composite decking, doors, windows, and more. All in the huge Builders First Source showroom. Make Builders First Source your first source. Located and grown and online at BLDRMichigan.com.