Your Trusted  Window Supplier in Fort Collins, Colorado

Builder’s Supply is a locally owned window and door supplier serving Fort Collins, CO, and Northern Colorado’s builders, contractors, and homeowners for over 40 years. We provide high-quality products from Andersen, Amsco, JELD-WEN, Gerkin, Therma-Tru, Velux, and other trusted brands.

Our team delivers accurate quotes, reliable communication, and hands-on project support—from takeoffs and product selection to delivery, service, and warranty coordination. We also offer a full showroom where customers can meet with our team, explore product options, and find the right solutions for their project. Whether you need a single replacement window, a complete custom home package, or windows and doors for an entire neighborhood, we’re committed to making the process simple, efficient, and dependable.

Discover the Builders Supply Difference

Join generations of satisfied customers in Fort Collins. Call Builders Supply at (970) 482-1320 to learn about our commitment to quality and service.