Across 129 permits filed since 2025-04-26, the median is $13,430; half of projects fall between $8,097 and $20,973. 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 Litchfield County, CT actually reported when they pulled permits.
Recent filings
- Remove and replace 5 windows, same size with no structural change. (ufactor .30)Town of Watertown · 2026-10-14$6,319
- Remove and replace 4 windows, same size with no structural change. (.28 ufactor)Town of Watertown · 2026-10-14$6,441
- R&R 4 windows (bedroom, office, living room) - no structural changesTown of Watertown · 2026-10-14$16,561
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 Litchfield County, CT came in between $8,097 and $20,973. 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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