Across 4,566 permits filed since 2025-03-10, the median is $10,000; half of projects fall between $4,354 and $15,895. 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
- Emergency water heater replacement 40 Gallon Liquid Propane Short 6 yearGroton · 2026-09-07$1,700
- ****DAVE IS ASSIGNED TO THIS**** Installation of 6 hair sinks, 1 on demand water heater, 1 hand washing sink and 1 laundry box. Gas main from meter to new gas dryer and tankless water heater.Town of Southington · 2026-09-04$14,000
- ***MARGARET IS ASSIGNED TO THIS**** rough to finish plumbing for 2 1/2 bath house - gas piping to fireplace, hot water heater and furnace. State Hot Water Heater Model Number: STAGS650YRVITTown of Southington · 2026-09-04$13,100
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 boiler / water heater permits in Connecticut came in between $4,354 and $15,895. 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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