Average cost for replacement windows — Boulder, CO

Last updated: September 24, 2026

What affects the price

Replacing windows involves several variables that change the final bill. The size and style of the window are big factors; fixed glass usually costs less than units that open, like double-hung or casement styles. Your choice of frame material—vinyl, wood, or fiberglass—also shifts the number significantly, as does the glass package you choose for energy efficiency. The complexity of the installation matters too, especially if there is existing rot or if the home needs structural work to fit new frames. Exact pricing confirmed free on the call.

About this service

Window replacement costs vary based on the frame material, the type of glass, and how many windows you are upgrading at once. You might also see price shifts based on the complexity of the installation and any necessary structural repairs. Exact pricing confirmed free on the call.

Frequently asked in Boulder

Also serving nearby: Longmont · Westminster · Arvada · Thornton · Lakewood

All cities in Colorado →

More on this: ENERGY STAR windows — efficiency ratings.

Service area details

Serving all of Boulder — population 105,898; about 3,937 residents per square mile across 26.9 sq mi. ZIP codes covered include 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308.

Neighborhoods served in Boulder: Downtown Boulder, University Hill, Newlands, Mapleton Hill, Chautauqua Park — and every surrounding area.