Across 91 permits filed since 2025-01-25, the median is $12,000; half of projects fall between $5,396 and $22,502. 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 Norwalk, CT actually reported when they pulled permits.
Recent filings
- INSTALL (1) BAND SIGN & (1) BLADE SIGN (2) WINDOW SIGNS FOR " GODGITTO SUSHI"City of Norwalk · 2026-07-23$1,750
- 17 SQ TEAR OFF VINYL SIDING INSTALL 1/2" ALSIDE FOAM INSULATION TAPE SEAMS INSTALL CUSTOM BENT TRIM ON WINDOWS AND DOORS NO STRUCTURAL CHANGES.City of Norwalk · 2026-07-17$17,562
- REMOVE AND REPLACE 7 WINDOWS, SAME SIZE NO STRUCTURAL CHANGE.City of Norwalk · 2026-07-07$8,852
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 Norwalk, CT came in between $5,396 and $22,502. 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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