Across 262 permits filed since 2025-03-10, the median is $12,515; half of projects fall between $3,500 and $25,738. 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 Greenwich, CT actually reported when they pulled permits.
Recent filings
- install Generac 28 kw Nextgen generator; install a new 200 amp. meter/main outside. Existing 200 amp. service. CRS: 28733328 . One existing meterTown of Greenwich · 2026-09-04$28,000
- install 20 kw Kohler generator on right side of house, and 200 amp. automatic transfer panelTown of Greenwich · 2026-09-03$20,759
- supply and install wiring for (1) 22 kw Generac automatic stand-by generator (1 total device). Existing 200 amp. service. Existing meterTown of Greenwich · 2026-09-02$12,000
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 electrical panel upgrade permits in Greenwich, CT came in between $3,500 and $25,738. 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
Electrical panel upgrade in New JerseyElectrical panel upgrade in New YorkElectrical panel upgrade in Connecticut