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Window replacement cost calculator

Data snapshot 2026-09 · HomeTrueCost

10 fiberglass retrofit windows typically run $12,000–$17,000 installed — frame material and install type drive the range. Adjust the inputs for an itemized receipt.

Frequently asked questions

How much does window replacement cost in 2026?

10 fiberglass retrofits typically run $12,000–$17,000. Vinyl retrofits start near $8,000. Fiberglass runs about 45% more; wood-clad full-frame exceeds $30,000. Total scales with count — more openings raise the total proportionally.

What drives window cost the most?

Frame material and install type — full-frame adds siding, trim, and flashing labor. Glass packages and sizes move materials.

Is this quote a contractor bid?

No — a planning estimate. Rot repair at openings is the common surprise; get 3 local bids.

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Anonymous paid prices refine these estimates. Moderated, never sold.

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Cost guide

Tiers, scope effects, permits, and seasonal timing — with changelog.

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