Across 300 permits filed since 2025-05-03, the median is $12,280; half of projects fall between $3,500 and $25,000. 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 Greenwich, CT actually reported when they pulled permits.
Recent filings
- new 200 amp. service, new meter, panel, breakers; add 3 outlets for sound in showroom. New 200 amp. serv. (CRS: 30319532). One new meterTown of Greenwich · 2026-10-30$6,000
- electrical wiring of 100 kw Generac generator and 4 200 amp transfer swtchs.Town of Greenwich · 2026-10-30$51,000
- install 26 kw Generator behind chimney; install 200 amp. ATS next to electrical meterTown of Greenwich · 2026-10-30$17,835
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 $25,000. 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
Electrical panel upgrade in New JerseyElectrical panel upgrade in New YorkElectrical panel upgrade in Connecticut