Across 2,396 permits filed since 2025-03-10, the median is $15,000; half of projects fall between $7,416 and $28,951. 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 Connecticut actually reported when they pulled permits.
Recent filings
- Kitchen, windows.Town of Weston · 2026-09-08$38,000
- Replacement of (2) picture window full frame. (Costco is the contract holder)Town of Weston · 2026-09-08$5,761
- Removal and replacement of 1 front entry door, 1 basement patio door, and 14 windows (bay, kitchen, bedrooms, basement) - no structural changesTown of Waterford · 2026-09-08$51,445
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 Connecticut came in between $7,416 and $28,951. 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 on Long Island