U S Building Supply


About us

US Building Supply is your number one wholesaler of quality Mastic, Certainteed, James Hardie and Crane Performance siding, and Milgard Windows. Along with these top brand products, we also offer the best service at competitive pricing. We currently have two facilities to serve you, located in Colorado Springs and Denver. Please peruse our website to see if we can help you.

Since it's beginning as a two person run location in 1992, United States Building Supply has become the premier wholesale distributor of siding and window products along the Colorado Front Range. USBS provides an extensive inventory of quality brand names to the remodeling and new construction market. As part of our success in assisting contractors, USBS also offers product training seminars, customized delivery, and progressive marketing programs. Come partner up with us to help grow your business.

Areas Served

Colorado, Wyoming, Western Nebraska, Western Kansas, New Mexico, Utah, Arizona and Montana

Consumer Experience Rating

To earn the Showroom Diamond, the dealer must have a showroom with a minimum number of Milgard products on display.
To earn the Web-Site Diamond, the dealer must have their own Web-site with information about the Milgard products and the services they sell.
To earn the AAMA Certified Diamond, the dealer must have an employee on staff that has completed the AAMA Installation Masters training and passed the AAMA Certified Installer test.
To earn the Product Knowledge Diamond, all Dealer Sales Consultants must pass a series of standardized Milgard administered tests demonstrating Milgard product knowledge.


4391 York St
Denver, CO 80216
United States



Monday 7:30am - 4:30am
Tuesday 7:30am - 4:30am
Wednesday 7:30am - 4:30am
Thursday 7:30am - 4:30am
Friday 7:30am - 4:30pm
Saturday Closed
Sunday Closed


Free estimates
Has Showroom
New construction


  • Home Builder's Association of Metro Denver
  • Home Builder's Association of Colorado Springs

The information shown on this page is provided by your local Milgard Certified Dealer which is responsible for the content of and views expressed on this page. Milgard is not responsible for the accuracy of such content, and any views expressed do not necessarily represent the views of Milgard Windows & Doors.

For full dealer information and product availability, please contact your local Milgard Certified Dealer.