person Your Account
Find a Yard Resources Now Hiring!
{{searchCategoryName}} arrow_drop_down Drywall Joint Treatment Steel Acoustical Insulation Lumber EIFS & Stucco Other Tools All search
clear

{{alert.title}}

  • {{msg}}
clear

{{alert.title}}

  • {{msg}}
Resources FAQs GMS / Parent Company Careers Credit Application Rubbermaid Commercial Products Armstrong Axiom Fry Reglet Trim Trimaco Surface Protection SMMA Steel Designations RedHeader PRO system Armstrong SoundScapes Ramset Fasteners Cendrex Access Doors G-P Dens Drywall Products Super Stud Steel Louisville Ladders Armstrong WoodWorks® USG Sheetrock® Tools Marshalltown Tools Hyde Hand Tools DeWalt 60V Max tools USG Sheetrock Joint Compounds Dow Thermax Exterior Insulation National Gypsum eXP Wallboard Armstrong Drywall Grid Systems Makita 18V Power Tools Dow Thermax Sheathing USG UltraLight Drywall ClarkDietrich BlazeFrame DeWalt 20V Max tools FallTech Safety Sto® Tool Delivery Service Ecommerce Impact Delivery & Fleet Knowledgeable Professionals Ordering Specialty Products Safety / Site Reviews Showrooms & Customer Pick-ups Drywall Steel Studs & Tracks Acoustical Ceilings Hand & Power Tools Joint Treatment & Finishes Insulation EIFS & Exterior Finishes Safety Surface Protection Accessories Flooring Lumber Access Doors Firestops FRP Panels Fasteners Fry Reglet 7770 Norfolk Condominiums Delmarva Health and Medical Pavilion Doylestown Assisted Living Light House Christian Church Oxford Square Plantation Lakes by Lennar Homes Ryan Homes Schuyler Crossing Theodore Roosevelt Senior High School Trump International Hotel Wegmans Grocery Store Dover, DE New Castle, DE Selbyville, DE Baltimore, MD (Quad Ave) Baltimore, MD (Whitestone Rd) Beltsville, MD Bladensburg, MD Frederick, MD Gaithersburg, MD Hagerstown, MD Upper Marlboro, MD Atlantic City, NJ (Egg Harbor Township) Camden, NJ Harrisburg, PA Fredericksburg, VA Manassas Park, VA Marshall, VA Springfield, VA Vienna, VA Winchester, VA Washington, D.C.

About Capitol Building Supply

Quality. Service. Reliability.

Welcome to Capitol Building Supply (CBSI) – home to the largest selection of quality construction materials and building supplies across the Mid-Atlantic region. Choose a topic below to learn more about:

Our Company – Our parent company GMS, careers with CBSI, credit application and other valuable customer resources

Articles – product releases and other updates

Our Services – delivery, pick-ups, specialty orders, showrooms and more

Our Products – drywall, steel, acoustical tiles, insulation, tools, lumber, etc.

Our Yards – locations in Maryland, Delaware, Virginia, and the D.C. metro area

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

Experienced and helpful customer service representatives are standing by ready to help.
call CONTACT US