Across 350 permits filed since 2025-03-12, the median is $9,906; half of projects fall between $4,000 and $24,681. 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 Erie County, NY actually reported when they pulled permits.
Recent filings
- To an existing 2 story 3 family dwelling replace kitchens and bathrooms in all 3 apartments, painting, replacement windows and doors, flooring.<div><br></div><div>***work by owner*** ***ALL MEP'S on separate permitBuffalo · 2026-09-04$75,000
- To an existing 2 story 3 family dwelling install vinyl siding and trim, install all new replacement windows throughout. Install new exterior doors<div><br></div><div>***work by owner***</div>Buffalo · 2026-09-04$30,000
- Add a new egress casement window to allow for the bedroom to meet the egress requirements of the code. Remove existing double hung window in same location *** Digeplan *** *** work by owner affidavit attached ***Buffalo · 2026-09-02$1,500
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 Erie County, NY came in between $4,000 and $24,681. 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
Window replacement in New YorkWindow replacement in ConnecticutWindow replacement on Long Island