Across 77 permits filed since 2025-01-28, the median is $5,000; half of projects fall between $2,000 and $10,000. 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 New London County, CT actually reported when they pulled permits.
Recent filings
- Install standby kohler generatorMontville · 2026-07-28$9,500
- Install gas lines and 2/120 gallon lp tanks for customer owned generator ( installed by others)Montville · 2026-07-22$1,197
- Run a gas line underground to the generator and tie into the existing cooking line.Town of Waterford · 2026-07-21$2,350
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 New London County, CT came in between $2,000 and $10,000. 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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