Brentwood, CA Building Safety: Electrical Permits (2026)

Brentwood enforces the California Electrical Code (Title 24, Part 3 of the California Code of Regulations), which is the California-amended version of the National Electrical Code (NFPA 70). The Building Division issues electrical permits and conducts inspections. A permit is required for: installing new branch circuits; replacing or upgrading the electrical service or main panel; installing or altering feeders; adding subpanels; rewiring portions of a home; hardwiring new fixtures, appliances, HVAC equipment, EV chargers, or solar/battery systems; installing generators; and any work inside a wall or ceiling that involves cables or devices. No permit is typically needed for like-for-like replacement of a receptacle, switch, light fixture, or cord-and-plug appliance, or for repairs to existing cord-connected equipment. Homeowners may perform electrical work on their own single-family primary residence under California Business and Professions Code 7044, but licensed C-10 electrical contractors must perform permitted work on any property not owner-occupied as a principal residence or where the work exceeds the 500 dollar labor-and-materials threshold. Common inspections include rough (before drywall), service/panel, and final. Current code priorities that frequently trigger compliance issues: AFCI protection for most habitable-space circuits; GFCI protection in kitchens, bathrooms, laundry, garages, and outdoor receptacles; dedicated 20-amp circuits for kitchen counters and laundry; tamper-resistant receptacles in dwelling units; Title 24 Part 6 energy-efficiency lighting controls; and California's electrification-ready requirements including 240V EV-charging readiness for new homes (CALGreen). Permit fees are valuation-based. Unpermitted electrical work discovered at resale through a home inspection or by Code Enforcement must generally be permitted retroactively, which may require destructive investigation and brings the work up to current code.