Across 58 permits filed since 2025-04-29, the median is $4,100; half of projects fall between $2,575 and $9,950. 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 Litchfield County, CT actually reported when they pulled permits.
Recent filings
- Provide all labor and materials necessary to complete a 200-amp electrical service upgrade, including all required service equipment, connections, grounding, and bonding to meet applicable electrical code requirements. All work will be comTown of Watertown · 2026-10-28$10,000
- wire new home 200 amp underground service CRS #30135429Town of Watertown · 2026-10-22$2,000
- Remove the two electrical services and replace with one 200 amp. single phase service.Town of Watertown · 2026-10-13$11,000
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 Litchfield County, CT came in between $2,575 and $9,950. 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