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Capitol Building Materials, Inc. (CBSI) Yards

Construction supplies in Delaware, Maryland, New Jersey, Pennsylvania, Virginia and Washington, D.C.

As part of the GMS family of companies, CBSI is a trusted partner of residential and commercial building professionals in DE, MD, NJ, PA, VA and Washington, D.C. We provide expert product and industry knowledge, and exceptional customer service from our local construction yards in:

Delaware

Dover | New Castle | Selbyville

Maryland

Baltimore | Beltsville | Bladensburg | Frederick | Gaithersburg | Hagerstown | Upper Marlboro

New Jersey

Atlantic City | Camden

Pennsylvania

Harrisburg

Virginia

Manassas Park | Marshall | Springfield | Stafford | Vienna | Winchester

Washington, D.C.

Yards in District of Columbia

Washington, D.C.

2300 T Street NE
Washington, DC 20002
PH: 202-554-9191
Hours: M-F 5AM-4PM
Sat 7AM-12PM

Yards in Delaware

Dover, DE

5119 N. DuPont Hwy.
Dover, DE 19901
PH: 302-678-4601
FX: 302-678-8034
Hours: M-F 6AM-4PM

New Castle, DE

3025 Bowlarama Dr.
New Castle, DE 19720
PH: 302-501-6020
FX: 302-561-9640
Hours: M-F 6:30AM-4PM

Selbyville, DE

36652 DuPont Blvd.
Selbyville, DE 19975
PH: 302-436-8624
FX: 302-436-8631
Hours: M-F 6:30AM-4PM

Yards in Maryland

Baltimore, MD - Quad Ave

6813 Quad Ave.
Baltimore, MD 21237
PH: 410-284-2800
FX: 410-284-2899
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Beltsville, MD

12340 Conway Rd.
Beltsville, MD 20705
PH: 301-937-6366
FX: 301-937-8710
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Bladensburg, MD

4501 46th St.
Bladensburg, MD 20710
PH: 240-764-1236
FX: 240-764-1235
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Frederick, MD

8006 Reichs Ford Rd.
Frederick, MD 21704
PH: 240-436-3500
Hours: M-F 5AM-4PM
Sat 7AM-12PM

Gaithersburg, MD

7870 Beechcraft Ave.
Gaithersburg, MD 20879
PH: 301-921-9207
FX: 301-927-9446
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Hagerstown, MD

1225 Maryland Ave.
Hagerstown, MD 21740
PH: 301-739-3090
FX: 301-739-1021
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Upper Marlboro, MD

7811 Penn-Western Ct.
Upper Marlboro, MD 20772
PH: 240-455-0319
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Yards in New Jersey

Atlantic City, NJ

3173 Fire Rd.
Egg Harbor Township, NJ 08234
PH: 609-646-9350
Hours: M-F 7AM-4PM
Sat 7AM-12PM

Camden, NJ

201 Erie St.
Camden, NJ 08102
PH: 856-576-6964
FX: 856-576-6971
Hours: M-F 7AM-4PM
Sat 7AM-12PM

Yards in Pennsylvania

Harrisburg, PA

1001 Herr St.
Harrisburg, PA 17103
PH: 717-614-8954
FX: 717-996-3165
Hours: M-F 7AM-4PM

Yards in Virginia

Manassas Park, VA

8429 Euclid Ave.
Manassas Park, VA 20111
PH: 703-631-6633
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Marshall, VA

7595 Capitol Way
Marshall, VA 20115
PH: 540-364-1202
Hours: M-F 6AM-4PM
Sat 7AM-12PM

Springfield, VA

7622 Backlick Rd.
Springfield, VA 22150
PH: 703-644-6970
Hours: M-F 4:30AM-4PM
Sat 6AM-12PM

Stafford, VA

16 Baron Park Rd.
Fredricksburg, VA 22405
PH: 540-368-6678
Hours: M-F 6:30AM-4PM

Vienna, VA

431 Mill St. NE
Vienna, VA 22180
PH: 703-281-5151
FX: 703-281-4414
Hours: M-F 5AM-4PM
Sat 6AM-12PM

Winchester, VA

195 Lenoir Dr.
Winchester, VA 22603
PH: 540-662-9142
FX: 540-722-2136
Hours: M-F 6AM-4PM
Sat 7AM-12PM

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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 three yards in Delaware (Dover, New Castle, Selbyville), seven yards in Maryland (Baltimore, Beltsville, Bladensburg, Frederick, Gaithersburg, Hagerstown, Upper Marlboro), two yards in New Jersey (Atlantic City, 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.