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NOTICE: All CBSI locations are open with normal business hours except Bayonne, N.J. which is closed to walk-ins & will call. However, deliveries will continue at all locations.

March 25, 2020 - Click here to read an updated message to our customers about COVID-19.

Your Source For Construction Products

Providing Drywall, Acoustical Ceilings, Steel Framing, Insulation & Tools

Drywall Products
Steel Framing
Acoustical Tiles
Tools & Accessories

Why Capitol Building Supply

Capitol Building Supply serves both commercial and residential customers and offers the largest inventory of construction supplies in Delaware, Maryland, New Jersey, Pennsylvania, Virginia, and Washington D.C. All of our employees pride themselves on being hard working, safe, and professional. Whether you need drywall, insulation, acoustical tile or construction accessories, we've got your jobsite needs covered.

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20 Locations to Serve You

With 20 yards located across Delaware, Maryland, New Jersey, Pennsylvania, Virginia, and Washington D.C., Capitol Building Supply services a number of major metropolitan areas as well as smaller towns and rural locations. Each of our yards offers delivery service within a 100 mile radius using boom trucks, flatbeds, semi-tractors with trailers, portable forklifts, vans and pickup trucks, and we can provide after hours deliveries as needed.

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Need to talk to an expert to help with your next project?

Experienced and helpful customer service representatives are standing by ready to help.
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About Us

Teaming up with the top brands in the industry, we have one simple pledge: to get the right products into our customers' hands as quickly and safely as possible.

Our Services

Capitol Building Supply carries a full range of commercial and residential construction supplies, and our crews are fully trained to deliver to all sites.

Our Locations

Our delivery fleet is dispatched from 20 locations including two yards in Delaware (Dover, Selbyville), eight yards in Maryland (Baltimore, Beltsville, Bladensburg, Forestville, Frederick, Gaithersburg, Hagerstown, Upper Marlboro), two yards in New Jersey (Bayonne, Camden), one yard in Pennsylvania (Harrisburg), six yards in Virginia (Manassas, Marshall, Springfield, Stafford, Vienna, Winchester), and one yard in Washington, D.C.

Contact Us

For more information about how to contact us, visit our Find a Yard page. Or, click the Contact Us tab to send us an email.