Across 29 permits filed since 2025-01-25, the median is $10,000; half of projects fall between $3,500 and $12,918. 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
- Run up to 20ft of 1 inch plastic and 1/2 inch copper mixed for generator. Set 2-120 LP tanks, tie-in from tanks to generator.Town of Watertown · 2026-07-21$1,150
- run gas line for house and gas line to generatorTown of Watertown · 2026-07-13$1,500
- install 22kw generac generator on right side of home (generator is customer supplied) See note,Town of Watertown · 2026-06-10$1,000
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 standby generator permits in Litchfield County, CT came in between $3,500 and $12,918. 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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