Quality Construction Products in DE, MD, NJ, PA, VA and Washington, D.C.
Originally founded as Fairfax Building Supply, the company that would become Capitol Building Supply has a legacy 35+ years in the making of providing the best construction products, and exceptional service, in multiple states surrounding the Washington, DC metro area.
Today, as the largest company in the GMS family, CBSI has 500+ employees serving residential and commercial construction customers from 19 yard locations.
Dover | Selbyville
Baltimore (Quad Ave. & Hamburg St.) | Beltsville | Bladensburg | Frederick | Gaithersburg | Hagerstown | Upper Marlboro
Fredericksburg | Manassas Park | Marshall | Springfield | Vienna | Winchester
Customer satisfaction, with a “safety-first” approach, is our priority at Capitol Building Supply, Inc. Our commitment to you extends through a range of services, including:
- Specialty product orders
- Expert advice
- Commercial construction delivery
- Residential construction delivery
- After-hours and weekend deliveries
We generally deliver within a ~100 mile radius of our yard locations, subject to traffic and other considerations.
Building Supplies & Products
- Our Drywall inventory includes regular and specialty drywall products; fire-rated drywall; Type-X drywall, moisture and mold-resistant drywall; impact-resistant drywall; shaft liner and other drywall accessories.
- Steel Framing
- Our Steel inventory includes variable lengths and multiple gauges of steel; steel studs; steel framing and other steel products and accessories.
- Acoustical Ceilings
- Our Acoustical inventory includes acoustical panels; acoustical grids; and other products and accessories for acoustical ceilings.
- Additional Products
- Other quality building products available at Capitol Building Supply, Inc. include: insulation, hand and power tools and other construction accessories.