Capitol Building Supply is a complete service distributor of commercial and domestic interior finishing products. Capitol Building Supply currently has 9 sales locations in DC, Virginia and Maryland. Our mission is to supply exceptional client service to the end users of these Products in a safe manner.

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William Lawrence

Jan 24, 2022

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They're good people, and they'll help you with anything; all you gotta do is ask.

James Crist

Feb 15, 2021

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Capitol building supply is very good. I have all the things you need in one store especially when it comes to Drywall.

Jason Hensler

Nov 29, 2020

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I deliver supplies to this location im always in and out very friendly employees

Ricardo Guevara

Jun 07, 2019

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Excellent personal ready to attend customers and their guests, including the best price for every thing

Rod Myrick

Jan 21, 2018

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I had a load of insulation that they hand unloaded. 53' van full, wall to wall, bottom to top, front to back. Only took them about an hour and 15min. Really good guys.

Frank Black

Nov 07, 2017

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I'd give no stars bit have to give at least one so this place is one of the worst capital building supplys to deliver too plan on being here for a minimum of 2-3 hrs

Lee Saunders

Mar 19, 2017

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Capitols Gaithersburg location has exemplary service and the best prices around!