Estimate installed cost per window and for the whole house
| Window Type | Low | Typical | High | 10-Window Project |
|---|---|---|---|---|
| Double-hung | $325 | $550 | $850 | $3,250 – $8,500 |
| Slider | $300 | $500 | $750 | $3,000 – $7,500 |
| Casement | $350 | $575 | $900 | $3,500 – $9,000 |
| Awning | $325 | $525 | $800 | $3,250 – $8,000 |
| Picture | $300 | $525 | $900 | $3,000 – $9,000 |
| Bay or bow | $1,600 | $2,700 | $4,100 | $16,000 – $41,000 |
| Custom shape | $450 | $750 | $1,200 | $4,500 – $12,000 |
National installed ranges for a standard 3×5 ft vinyl-frame window with low-E argon glass, retrofit insert, one story. Prices are 2025-26 national ranges, not quotes; labor ($100–$300 per window) is included.
| Option | Cost Impact |
|---|---|
| Vinyl frame | Baseline |
| Aluminum frame | +5% |
| Fiberglass frame | +40% |
| Composite frame | +55% |
| Wood frame | +70% |
| Double-pane clear glass | −5% vs low-E argon |
| Triple-pane glass | +22% |
| Full-frame installation | +$175 per window |
| Second-story access | +$75 per window |
| Custom or oversize unit | +40% to +60% |
Oversize units (over about 12 sq ft of glass) and true custom shapes are quoted piece by piece; the +40% to +60% line is a planning number until a fabricator prices your opening.
Window replacement pricing is quoted two ways: per unit installed for the whole job, or as a unit price plus labor. This calculator uses national installed ranges so you get a realistic project budget, not a teaser rate.
Per-window cost = type base price × material factor × glass factor + install adder + story adder. The type base covers a standard 3×5 ft unit with low-E argon glass and standard retrofit labor. Total = per-window cost × window count. Low, typical, and high values come from the published national range for each input, so the spread you see is real market spread, not padding.
Count your windows (a typical 3-bedroom home has 8 to 12), pick the type and frame material you're actually shopping for, and leave glass at low-E argon unless you're in a cold climate or beside a busy road, where triple-pane earns its premium. Retrofit insert is the right default if your frames are square and rot-free; choose full-frame when the sills or trim are failing.
Ten vinyl double-hungs with low-E argon glass, retrofit installed on a single-story home: $550 typical per window, so about $5,500 for the project, with a realistic range of $3,250 to $8,500 depending on market and installer.
Now the same house with six fiberglass casements in triple-pane, full-frame, on the second floor: $575 base × 1.40 material × 1.22 glass = $982, plus $175 full-frame and $75 second-story labor, or $1,232 per window and roughly $7,400 for six. Same formula, very different bill, which is why material choice is the biggest lever you control.
All figures are national planning ranges. Get three quotes; prices vary 30% or more between markets and between installers in the same town.
About $5,500 for 10 standard vinyl double-hung windows with low-E argon glass, retrofit installed, with a typical range of $3,250 to $8,500. Upgrading to fiberglass or wood frames, triple-pane glass, or full-frame installation pushes the same job to $8,000 to $12,000 or more.
Vinyl retrofit inserts are the value play. A retrofit (pocket) install reuses your existing frame, skipping the trim and siding work of a full-frame replacement, and vinyl frames cost roughly 40% less than fiberglass and 70% less than wood. Doing the whole house in one project also earns volume discounts of 5% to 15% from most installers.
Usually yes. Crews mobilize once instead of several times, and most companies discount per-window pricing 5% to 15% for whole-house jobs of 8 to 15 windows. A single project also means one mess, one permit, and one warranty conversation if something goes wrong.
Slowly, if ever. Swapping clear single-pane glass for double-pane low-E typically trims $100 to $300 a year off heating and cooling, which means payback can stretch past 20 years. The better case is comfort, quieter rooms, easier operation, and resale appeal; Remodeling's Cost vs. Value Report puts window replacement recoup around 60% to 70%.
A bay or bow window runs about $1,600 to $4,100 installed, with most landing near $2,700 for a standard vinyl unit. That price includes the extra framing, the header support, and the roof or seat-board tie-in that a flat window doesn't need, which is why it costs several times a standard double-hung.
A two-person crew typically installs one to two windows per hour. Ten standard retrofits are a one-day job; a whole house of 15 to 20 windows, or any full-frame replacements with trim and siding work, usually stretches to two days plus a cleanup visit.