GBS Building Supply, founded in 1972 by Upstate homebuilders, has grown into a trusted provider with seven locations across the Carolinas. They supply a wide range of building materials, including windows, doors, stone, roofing, siding, millwork, hardware, columns, trim, cabinetry, countertops, decking, gypsum, lumber, plywood, insulation, and more. The company also features a custom molding and millwork center, along with kitchen and floor system design services. Customers praise the fast unloading, knowledgeable staff, and excellent service. Many appreciate the ability to match old window moldings and the overall easy, satisfying buying experience. GBS Building Supply is known for its friendly, respectful staff and quality products.
Bro is installing the quarter round we ordered from here today, actually.
November 2025
I purchased my Sierra Pacific windows and tri fold door from GBS. Their service and attention to detail is second to none. Tim L., Carolynn W. and Brandon R. all were so helpful and saw to my needs at every turn. I HIGHLY RECOMMEND GBS and confident that every customer experience has been and will be as excellent as mine... read full comment
September 2024
Very fast to unload and very nice counter personel !
