Window Replacement Cost Calculator (2026)

Estimate the cost to replace windows. Pick window count, material (vinyl, fiberglass, wood), install type, and trim. 2026 data; not a contractor bid.

Black-framed double-hung replacement window installed in a vinyl-sided home with flashing tape visible at the jamb and the old sash set aside on a sawhorse

Enter your window project

Includes labor, equipment, permit, and contractor markup.

Common projects

Project size

Uses the first 3 digits as a planning zone (not exact local pricing). Overrides state average when matched.

Material & install

Use full-frame if old frames are rotted or you're changing opening size.

Demo, trim & permit

Your window replacement estimate

Estimated installed range
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Materials
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Cost breakdown

ItemQuantityEstimated range
Planning estimate, not a bid. 2026 ranges informed by HomeAdvisor, Angi, HomeGuide, Homewyse and manufacturer (Andersen, Pella, Marvin) MSRP data.
What's not included: egress-window cutouts (new bedroom egress), historic-district approvals, lead-paint RRP-certified work on pre-1978 homes, structural header changes for opening enlargements, and impact-rated glass surcharges in HVHZ counties.

Bid check

Got a window contractor quote? Compare it to the planning range.

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Methodology & sources

What this is: a planning-range window-replacement calculator informed by 2026 cost guides (HomeAdvisor, Angi, HomeGuide, Homewyse) and manufacturer MSRP data (Andersen, Pella, Marvin, Milgard).

Material pricing is per-window supply for standard double-hung-equivalent sizes (~12-16 sq ft). Larger or specialty (bay/bow) windows priced per-assembly.

Labor is modeled from per-unit installed rates with a crew-rate sanity check ($55-$95/crew-hr loaded billing rate), informed by BLS OEWS 47-2121 (Glaziers) and 47-2031 (Carpenters). Throughput: ~5 windows/crew-day for inserts, 3/day for full-frame.

Energy code: Title 24 (CA), Stretch (MA), and Florida HVHZ all have window-specific code premiums — built into the location multipliers.

Last updated: May 2026. Full methodology →

How much does window replacement cost in 2026?

Window replacement runs $400 to $1,800 per window installed in 2026 depending on material and install method. Vinyl is the value choice; fiberglass and wood are the long-life premium options.

MaterialWindow onlyInstalled (insert)Installed (full-frame)
Vinyl - double-hung$300-$650$450-$1,000$600-$1,300
Vinyl - casement$400-$800$550-$1,150$700-$1,450
Aluminum-clad wood$550-$1,000$700-$1,350$850-$1,650
Wood - double-hung$600-$1,200$750-$1,550$900-$1,850
Fiberglass - double-hung$700-$1,100$850-$1,450$1,000-$1,750
Wood - casement$750-$1,500$900-$1,850$1,050-$2,150
Bay / bow window$2,000-$4,000$2,650-$5,850$2,800-$6,150

Frequently asked questions

How much does window replacement cost in 2026?

Vinyl $400-$1,000/window installed, fiberglass $900-$1,700, wood $800-$1,800. Whole-house 10-window vinyl: $5,000-$10,000. Whole-house fiberglass full-frame: $10,000-$20,000.

Insert vs full-frame replacement?

Insert (pocket) replacement keeps the existing frame and adds $150-$350/window labor. Full-frame removes the frame down to the rough opening — costs $150-$300/window more, but the right call if frames are rotted or sized changing.

Do I need a permit to replace windows?

Like-for-like inserts are permit-exempt in many jurisdictions. Full-frame replacement, opening-size changes, and new egress windows usually require a permit ($50-$500).

Are vinyl windows cheaper than wood?

Vinyl is roughly 40-60% cheaper supply-side, but the gap closes installed because labor is similar. Vinyl typically lasts 20-30 years; clad-wood and fiberglass 30-50+.

What's the cheapest way to replace windows?

Insert vinyl in a like-for-like opening with no trim work and no permit. Buying in bulk through a distributor or warehouse store helps too — manufacturer offers can shave 10-20%.

Why does the calculator show a price range?

Brand, glass package (Low-E, argon, triple-pane), opening condition, and installer skill all swing the total 30-60%. A range gives an honest planning estimate.

Common mistakes & questions

  • Insert vs full-frame — inserts keep old frame (cheaper); full-frame replaces frame and re-flashes (right call if frame is rotted).
  • Skip rot inspection — sashes rot first; jambs second; full-frame mandatory if jambs are soft.
  • Miss egress code — bedroom windows require 5.7 sf clear opening (5.0 ground-floor); replacements that shrink opening violate code.
  • Wrong glass package — Low-E, argon, triple-pane vary by climate zone; match to IECC zone.
  • Ask your installer: insert vs full-frame, flashing detail, foam type (low-expansion only), interior trim plan, NFRC ratings.

When this estimate is wrong

  • Hard access (rural, second-floor, no parking nearby) adds 10-25%.
  • Trip charge minimums — most contractors have a $200-$500 minimum, even for small jobs.
  • Local code (energy, hurricane, seismic, historic) can require upgrades beyond IRC default.
  • Disposal fees — landfill costs vary by state; tear-off jobs hit hard in CA/NY.
  • Seasonality — winter/early spring quotes are 10-20% lower than peak summer.
  • Supplier minimums — small material orders often add 10-15% over bulk pricing.
  • Permit timeline — permits add days to weeks; failed inspections add cost.