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Our Job? Making Your Jobs Easier!

E-Commerce Empowers You to Work Faster, Smarter and Better

Get invoices, account pricing, pay online & much more

At Capitol Building Supply, Inc., we’ve been helping construction professionals across Delaware, Maryland, New Jersey, Pennsylvania, Virginia, and the Washington, D.C. area create success for more than 35 years. In that time, a lot has changed, but our commitment to customer service never has, and never will.

We are focused on helping customers streamline their operations and continue to deliver quality results. One of the best tools we have for this crucial job is our e-commerce website (https://cbsi.net).

Create an Immediate Impact

Customers with credit accounts have access to a wide variety of time-saving features:

  • Pay bills online (ACH only) – review your outstanding invoices and make payments 24/7
  • Check inventory – find out in real-time if the products you need are in stock
  • See account pricing – for a specific job or your everyday pricing for any of our products
  • Get invoices – download them to your computer or print them out
  • Review shipments – search by job ship-to/location, date/aging or invoice number
  • Manage employees – allow your employees to see only what they need by assigning specific user roles

And the Future is Even Brighter

We’re continually updating our site, to offer you even better service and greater value. Future features we’re working to bring you include:

  • Online Order Placement – from our entire inventory of products
  • Create custom lists – quickly reorder your mostly frequently purchased items, in just three easy clicks
  • Quote Requests and Reviews – anytime, anywhere for all your future projects
  • Delivery notifications – know when our delivery truck leaves the yard, on its way to your jobsite, and/or when your orders have been delivered
  • Proof of delivery images – see photos of actual deliveries at your jobsites, for greater assurance and peace of mind

You’re busy; we get it. That’s why Capitol Building Supply, Inc. (CBSI) goes the extra mile when it comes to customer service. Our goal has always been to provide you with all the tools and materials you need to succeed. Now, our e-commerce site supports the same goal – providing a single source that gives you anytime, anywhere access to all the important information about your orders with us.

Get Your Online Account Now

Don’t wait. Start optimizing your operations today. Customers with credit accounts can email us at ne.ecomm@gms.com to get started! And as always, thank you for your business!

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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 19 locations including two yards in Delaware (Dover, Selbyville), eight yards in Maryland (Baltimore, Beltsville, Bladensburg, Forestville, Frederick, Gaithersburg, Hagerstown, Upper Marlboro), one yard in New Jersey (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.