Across 78 permits filed since 2025-04-24, the median is $6,250; half of projects fall between $3,500 and $12,500. 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 Middlesex County, CT actually reported when they pulled permits.
Recent filings
- New electrical service 200 ampHigganum · 2026-10-23$8,500
- Upgrading service from 100 to 200 ampHaddam · 2026-10-21$3,000
- Temporary Service pole for construction. Complete wiring of new house with 200 amp service Temp Service # 28993712 email to eversource 10/14/2026 Pernament Service # 29350468Haddam · 2026-10-15$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 Middlesex County, CT came in between $3,500 and $12,500. 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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