Across 279 permits filed since 2025-01-25, the median is $20,000; half of projects fall between $10,000 and $50,000. Figures are permit valuations reported to building departments. National cost guides answer this question with averages from other markets; these numbers are what homeowners in Westchester County, NY actually reported when they pulled permits.
Recent filings
- remove and replace 7 windows no structural work. all windows located in the back of the home in one room.New Rochelle · 2026-07-23$25,152
- install 14 replacement windows-no structural workNew Rochelle · 2026-07-23$40,000
- Remove and replace 3 windows, same size, no structural change. U-factor is 0.25 and 0.26.New Rochelle · 2026-07-23$4,139
How to read these numbers
Permit valuations are the project cost the applicant reports to the building department. They skew slightly low — nobody rounds up for the permit fee — and scope varies, so the middle-half range is the honest picture: half of all window replacement permits in Westchester County, NY came in between $10,000 and $50,000. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.
Same project, other places
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