Across 1,254 permits filed since 2025-01-25, the median is $5,000; half of projects fall between $3,500 and $13,000. 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 Connecticut actually reported when they pulled permits.
Recent filings
- 200 amp service change ,22 whole generator within 10-15' from the meter box and 5' away from the house ,kitchen -updating all new plugs and switches ,garage -run 2 dedicated 20 amp circuits ,run 6/2 romex for future car charger(install juncSimsburyTownCT · 2026-07-24$9,000
- service upgrade, 100A to 200A overhead, same location CSBC2022 CACity of New Haven · 2026-07-24$3,600
- Service Upgrade from 100a-240vac to 200a-240vac. Install 30a-240v circuit with local disconnect and 120v service receptacle for condensing unit and Install 15a-240v circuit with local disconnect and 120v service receptacle for air handlerCity of Milford · 2026-07-24$7,550
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 Connecticut came in between $3,500 and $13,000. 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 York