Cost of replacement windows and installation — St. Louis, MO

Last updated: September 24, 2026

What affects the price

Replacing your windows involves several moving parts that change the final bill. The biggest factor is the frame material, as vinyl tends to be more budget-friendly while wood or custom fiberglass options sit on the higher end. You also have to consider the glass packages—things like double versus triple panes or extra coatings for energy efficiency can shift the cost. The complexity of the installation matters, too, such as whether your frames need repairs or if you are switching from a standard window to a bay or bow style. Exact pricing confirmed free on the call.

About this service

When you replace your windows, the total expense depends on the size of the openings, the number of windows, and the specific materials you choose. Opting for energy-efficient glass or custom frame colors will shift your final estimate. We provide a breakdown based on your home's unique layout. Exact pricing confirmed free on the call.

Frequently asked in St. Louis

Also serving nearby: O Fallon · Springfield · Columbia · Champaign · Peoria

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More on this: ENERGY STAR windows — efficiency ratings.

Service area details

Serving all of St. Louis — population 281,754; about 4,565 residents per square mile across 61.7 sq mi.

Neighborhoods served in St. Louis: The Hill, Central West End, Tower Grove, Soulard, CWE — and every surrounding area.