Across 218 permits filed since 2025-03-03, the median is $6,000; half of projects fall between $2,000 and $12,572. 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 Hartford County, CT actually reported when they pulled permits.
Recent filings
- ****MIKE IS ASSIGNED TO THIS**** Install a 18 KW Generac generator automatic generator system. Generator and ATS to be on left side of home. C/A fee includedTown of Southington · 2026-08-31$12,000
- AMENDED: REMOVE EXISTING 250G AG LP. ADD 1 120GAL TANK ON BLOCKS AT GARAGE SET FOR TEST. MAKE FINAL CONNECTIONS. RUN 1/2' BLACK PIPE ALONG HOUSE TO THE GENERATOR. SET TEST LEAK CHECK AND RE-FIRE UPON APPROVAL. Wetlands comment sent 8/5/2Simsbury · 2026-08-28$1,900
- Install of 320 gallon underground propane tank on left side of house approx 15' from building with 3/4 PE line to location of future generator Your application for a Building Permit has been reviewed for compliance with the 2022 State of Simsbury · 2026-08-25$5,834
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 Hartford County, CT came in between $2,000 and $12,572. 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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