Across 406 permits filed since 2025-05-02, the median is $10,000; half of projects fall between $4,542 and $15,160. 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 Milford, CT actually reported when they pulled permits.
Recent filings
- pipe 2 asme 420# propane tanks for combi boiler installation. All propane piping will be pressure tested to 15 PSI for mechanical inspection.City of Milford · 2026-10-30$4,000
- Installation of replacement gas furnace and add on central ac system (evap coil/condenser)City of Milford · 2026-10-30$12,000
- Remove & dispose of the old 30-gallon oil-fired water heater. Install a new Bock 32e oil-fired water heater with Carlin burner and CAP fresh air kit. Install includes all necessary piping, wiring, controls, safety pan, mixing valve water cuCity of Milford · 2026-10-28$8,151
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 Milford, CT came in between $4,542 and $15,160. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.
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