Across 517 permits filed since 2025-01-25, the median is $9,348; half of projects fall between $5,000 and $17,000. 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 Haven, CT actually reported when they pulled permits.
Recent filings
- Replacing (15) warm air furnaces & (10) gas-fired hot water heaters.City of New Haven · 2026-07-23$69,645
- Install Samsung ceiling cassette for third floor, install Rheem 2-ton air hander for second floor and Rheem 2.5 -ton air handler, zoned, for first floor. Install one viessman boiler with cast iron radiators throughout the home.City of New Haven · 2026-07-23$92,800
- 1. Disconnect existing furnace & reconnect existing circuit to new furnace. 2. Install new 20amp dedicated circuit for new sump pump.City of New Haven · 2026-07-23$6,500
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 New Haven, CT came in between $5,000 and $17,000. 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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