Across 30 permits filed since 2025-04-30, the median is $9,692; half of projects fall between $2,324 and $70,061. 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
- Temporary Trailer mounted 150 KW generator for special event under SE-26-00301City of New Haven · 2026-10-05$2,000
- Temporary Trailer mounted 65 KW generator for event under B-26-01932City of New Haven · 2026-10-02$1,500
- Installing a 40/80 Tent, for a Buffet Lunch on 10/17/2026. We have 4 heaters on standby with a decision on 10/14/2026 at 9:00 am. We will also have a 6500 KW generator at site for temporary power.City of New Haven · 2026-10-02$7,000
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 Haven, CT came in between $2,324 and $70,061. 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
Standby generator in New YorkStandby generator in ConnecticutStandby generator on Long Island