Window & Door Replacement Count/Cost Calculator

It depends on how many openings, their types, and the quality tier — so the calculator counts each opening and totals the installed cost.

As an example, 8 double-hung windows plus an entry door and a patio door at the Standard tier is about $8,300 in windows and doors, or roughly $9,955 all-in once disposal, permit, and a 10% contingency are added — about $996 per opening.

These are national-average estimates that vary widely — always get written quotes locally before budgeting for real.

Installed, a single replacement window commonly runs a few hundred to over a thousand dollars, by type and tier.

At the Standard tier, the defaults are about $600 for a double-hung, $650–$750 for sliders and picture windows, and $700 for a casement — while a bay or bow window is far more, around $2,200. Economy is ~25% less, Premium ~40% more.

Every price is installed and fully editable, so replace the defaults with your own quotes.

The tier sets the default installed unit price for every opening, as a multiplier on a mid-range baseline:

• Economy (~0.75×): builder-grade vinyl, basic options
• Standard (1.0×): mid-range vinyl, the common choice
• Premium (~1.4×): fiberglass, wood-clad, or high-end vinyl

Changing the tier refills all line prices, and you can override any single line. Higher tiers cost more up front but often bring better energy performance and warranties.

Yes. Every unit price is an installed price — material plus labor together — not just the window or door itself.

That’s why the defaults are higher than a store shelf price: they fold in removing the old unit, fitting, flashing, sealing, and basic trim. Disposal, permit, tax, and contingency are added separately on top.

If a contractor quotes a supply-only price, add labor before comparing it to these figures.

Four line items sit on top of the windows and doors:

• Disposal / haul-away — removing each old unit, often $25–$75 per opening
• Permit — a one-time fee where inspection is required
• Sales tax — applied to the subtotal at your local rate
• Contingency — a buffer for rot, resizing, or trim

The calculator adds all four automatically. Together they can add 15–25%+ to the bare subtotal, so don’t budget on the subtotal alone.

About 10% is a sensible cushion for replacement work, and it’s the calculator’s default.

Replacement always uncovers surprises — rotted framing behind an old window, an opening that needs resizing, extra trim. The contingency is applied to the subtotal plus add-ons and tax, so it scales with the whole job.

For an older home or one with moisture issues, consider 15%. For a straightforward swap of recent windows, 5–10% may be enough — it’s a buffer, not a guarantee.

Use this tool for the ballpark, then replace the defaults with real numbers. Walk the house and list every opening by type, pick the tier that matches the products you’re considering, and enter the quantities.

Then get written, itemized quotes from two or three local contractors and type their installed unit prices straight into each line, along with your actual tax rate and permit fee.

Your real cost depends on brand, size, region, and what’s behind the walls.

An insert (pocket) replacement fits a new unit into the existing sound frame — quicker and cheaper, but it slightly reduces the glass opening. A full-frame replacement removes everything to the rough opening, so you can address rot, resize, and re-flash — more thorough but more expensive.

This calculator uses a single blended installed price per opening rather than splitting the two methods.

Full-frame work and hidden rot are exactly what the contingency covers, so lean higher if full-frame is likely. Confirm the method in your contractor’s quote.