Capitol Building Supply, Inc.

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.

Delaware

Dover | Selbyville

Maryland

Baltimore (Quad Ave. & Hamburg St.) | Beltsville | Bladensburg | Frederick | Gaithersburg | Hagerstown | Upper Marlboro

New Jersey

Bayonne | Camden

Pennsylvania

Harrisburg

Virginia

Manassas Park | Marshall | Springfield | Vienna | Winchester

Washington, D.C. 

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

  • Drywall
    • 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.

Distribution Centers & Locations

Find a GMS Yard Near You

  • Capitol Building Supply, Inc. - Baltimore

    6813 Quad Avenue

    Baltimore,  MD  21237

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:410-284-2800

    F:410-284-2899 

    Get Directions
  • Capitol Building Supply, Inc. - Baltimore

    1303 West Hamburg Street

    Baltimore, MD 21230

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:410-685-1080

    F:410-685-1084

    Get Directions
  • Capitol Building Supply, Inc. - Bayonne

    240 E 5th Street

    Bayonne, NJ 07002

    Mon - Fri: 7:00am - 4:30pm

    Sat - Sun: Closed


    P:201-998-2400

    F:201-998-2700

    Get Directions
  • Capitol Building Supply, Inc. - Beltsville

    12340 Conway

    Beltsville,  MD  20705

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:301-937-6366

    F:301-937-8710 

    Get Directions
  • Capitol Building Supply, Inc. - Bladensburg

    4501 46th Street

    Bladensburg,  MD  20710

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:240-764-1236

    F:240-764-1235 

    Get Directions
  • Capitol Building Supply, Inc. - Camden

    201 Erie Street

    Camden,  NJ  08102

    Mon - Fri: 7:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:856-576-6964

    F:856-576-6971 

    Get Directions
  • Capitol Building Supply, Inc. - Dover

    5119 N. Dupont Highway

    Dover,  DE  19901

    Mon - Fri: 6:00am - 4:00pm

    Sat - Sun: Closed


    P:302-678-4601

    F:302-678-8034 

    Get Directions
  • Capitol Building Supply, Inc. - Frederick

    8006 Reichs Ford Road

    Frederick, MD 21704

    Mon - Fri: 5:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:240-436-3500

    Get Directions
  • Capitol Building Supply, Inc. - Gaithersburg

    7870 Beechcraft Avenue

    Gaithersburg,  MD  20879

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:301-921-9207

    F:301-927-9446

    Get Directions
  • Capitol Building Supply, Inc. - Hagerstown

    1225 Maryland Avenue

    Hagerstown,  MD  21740

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:301-739-3090

    F:301-739-1021

    Get Directions
  • Capitol Building Supply, Inc. - Harrisburg

    1001 Herr Street

    Harrisburg, PA 17103

    Mon - Fri: 7:00am - 5:00pm

    Sat - Sun: Closed


    P:717-614-8954

    F:717-996-3165

    Get Directions
  • Capitol Building Supply, Inc. - Manassas Park

    8429 Euclid Avenue

    Manassas Park,  VA  20111

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:703-631-6633

    Get Directions
  • Capitol Building Supply, Inc. - Marshall

    7595 Capitol Way

    Marshall,  VA  20115

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:540-364-1202

    F:540-364-1519 

    Get Directions
  • Capitol Building Supply, Inc. - Selbyville

    36652 DuPont Boulevard

    Selbyville,  DE  19975

    Mon - Fri: 6:30am - 4:00pm

    Sat - Sun: Closed


    P:302-436-8624

    F:302-436-8631 

    Get Directions
  • Capitol Building Supply, Inc. - Springfield

    7622 Backlick Road

    Springfield,  VA  22150

    Mon - Fri: 4:30am - 5:00pm

    Sat - Sun: Closed


    P:703-644-6970

    F:571-322-0028

    Get Directions
  • Capitol Building Supply, Inc. - Upper Marlboro

    7811 Penn Western Court

    Upper Marlboro,  MD  20772

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:240-455-0319

    Get Directions
  • Capitol Building Supply, Inc. - Vienna

    431 Mill Street NE

    Vienna,  VA  22180

    Mon - Fri: 5:00am - 5:00pm

    Sat: 6:00am - 12:00pm

    Sun: Closed


    P:703-281-5151

    F:703-281-4414

    Get Directions
  • Capitol Building Supply, Inc. - Washington

    113 Potomac Ave SW

    Washington,  DC  20024

    Mon - Fri: 5:00am - 4:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:202-554-9190

    F:202-863-1364 

    Get Directions
  • Capitol Building Supply, Inc. - Winchester

    195 Lenoir Drive

    Winchester,  VA  22603

    Mon - Fri: 6:00am - 5:00pm

    Sat: 7:00am - 12:00pm

    Sun: Closed


    P:540-662-9142

    F:540-722-2136

    Get Directions

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