Window Replacement Cost in St. Louis, MO (2027 Prices)
Price your windows in St. Louis, MO
In St. Louis, MO, a typical job of 10 double-hung vinyl replacement windows runs $4,960 to $8,390, installed. Per opening, expect $495.78 to $838.10; we budget $5,910 for the set.
Every number on this page comes from the same math as our windows calculator - Low-E plus argon glass, entry-level quality, no added grids or trim - adjusted for local labor and materials (about 1% below the national average). Installers in St. Louis charge a bit more than the Missouri average - about 3% - so the same 10 windows run $4,840 to $8,170 statewide.
Window Replacement Cost in St. Louis by Frame Material
Swap the frame and the bill changes fast: $8,530 to $14,410 for fiberglass, $7,870 to $13,310 for wood, $8,200 to $13,860 for aluminum - against $4,960 to $8,390 for vinyl. Specialty shapes cost more to build and install. A bay or bow window comes to roughly $3,411.80, a slider $930.68, a standard double-hung $590.21.
| Frame (10 double-hung windows) | Installed cost | Estimate | Per window |
|---|---|---|---|
| Vinyl | $4,960 to $8,390 | $5,910 | $495.78 – $838.10 |
| Wood | $7,870 to $13,310 | $9,370 | $786.89 – $1,330.21 |
| Fiberglass | $8,530 to $14,410 | $10,150 | $852.31 – $1,440.80 |
| Aluminum | $8,200 to $13,860 | $9,760 | $819.60 – $1,385.51 |
Price per Window by Style
| Style (vinyl) | Installed, per window | Estimate |
|---|---|---|
| Double-hung | $495.78 to $838.10 | $590.21 |
| Sliding (2-lite) | $781.77 to $1,321.56 | $930.68 |
| Bay or bow | $2,865.91 to $4,844.75 | $3,411.80 |
Build Your Order: Upgrades for 10 Windows
What the common extras do to the 10-window estimate in St. Louis:
What St. Louis Weather Asks of a Window
St. Louis needs windows that work in both seasons. Low-E/argon glass cuts winter heat loss and summer gain, which is why the calculator includes it by default.
Climate regions run from 1 (cool) to 5 (hot); Missouri sits in region 3.
Where hail is common, new windows are often an insurance job. Read the adjuster's estimate against the prices on this page, and ask whether laminated glass is worth adding on the most exposed side.
Moisture is the quiet enemy of window frames in a humid climate. Insist on a sloped sill pan or flashing below each unit, so water that gets past the frame drains out instead of into the wall.
In a cold climate, compare bids by U-factor (lower is better) as well as by price. Triple-pane glass is an option for the coldest walls; ask for it as a separate line so you can see what it adds.
Window swaps happen one opening at a time, so crews work most of the year; booking in the slower months can shorten the wait. As one of the more northerly cities in our Missouri list, St. Louis tends to get colder winter nights, when drafty sash and fogged double-pane units show their age first. The closest city in this guide is Columbia, roughly 110 miles to the west. If an installer serves both, its window prices are on a separate page for comparison.
Getting a Fair Window Quote in St. Louis
Before you pick a bid in St. Louis, make every installer cover the same three points:
- Rot check. Ask what happens, and what it costs, if the old sill or framing is soft once the sash comes out.
- Crew. Find out if the seller installs with its own staff or a subcontractor.
- Better build. A stronger frame and sash adds about $1,180 for 10 windows here; ask what it buys you.
Window Prices Near St. Louis
The same 10 vinyl windows in other Missouri cities:
- Kansas City, MO - $5,000 to $8,450 (230 mi west)
- Springfield, MO - $4,930 to $8,330 (190 mi southwest)
- Columbia, MO - $4,910 to $8,300 (110 mi west)
- Independence, MO - $4,950 to $8,370 (230 mi west)
Common Questions About New Windows in St. Louis
Is fiberglass worth the extra cost over vinyl?
For budget and low upkeep, vinyl is hard to beat. Fiberglass ($8,530 to $14,410 here) and wood ($7,870 to $13,310) make sense for historic looks, big glass areas or homes where resale buyers expect them.
How many days does it take to replace 10 windows?
Usually a day or two for 10 windows. Crews work room by room, protect floors and leave each opening sealed by evening; clear sills and blinds before they arrive.
What does a St. Louis installer charge per opening?
A standard double-hung vinyl window runs about $495.78 to $838.10 installed in St. Louis when you replace several at once. Single windows cost more per unit because the trip and setup are spread over one opening.
Every figure here is a model for St. Louis built on our windows calculator, not an offer. Measured sizes, the brand you choose and the trim work will set your real price.
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