California is one of the more DIY-friendly states for electrical work — if it's your home, you live in it, and you pull a permit. Here's the actual legal picture, plus where the safety reality argues for hiring it out.
The owner-builder rule
California Business & Professions Code allows owner-occupants to do electrical work on their primary residence without a contractor's license. The catch: you must pull the permit, you can't sell the property within one year of completion, and the work must pass inspection.
What still requires a permit
Any new circuit, any service or panel change, any branch-circuit alteration — permit. Replacing a like-for-like fixture (light, switch, receptacle) does not require a permit, but it does still need to meet code (e.g., AFCI/GFCI where applicable).
What we recommend DIYing
Light fixture swaps, receptacle and switch replacements where the existing wiring is in good shape and no relocation is needed, low-voltage work (Cat6, smart-home sensors). These are reasonable DIY territory if you turn off the breaker, test before touching, and use the right wire connectors.
What we recommend hiring out
Anything in or behind the panel — that's where most serious incidents happen. Service work — anything outside the meter is PG&E's, anything inside requires permitted work. EV chargers — wrong sizing or grounding can fail spectacularly. Rewires, sub-panels, generator transfers — all licensed-electrician territory.
Safety basics if you do DIY
Always turn off the breaker and verify dead with a non-contact tester and a multimeter. Never assume the breaker label is right. Know which side of an outlet is line vs. load. Use wire connectors rated for the conductor count. Don't backstab — pigtail to the device with a wire connector.
Sonoma County · Since 1990
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