How a smart opener, an EV charger and California's battery backup rule fit into one garage — and what needs an electrician.
Codes are amended locally. Where a city adopts an amendment that changes the answer, the section below says so — and the permit counter, not this page, is the final word.
CALGreen has driven EV-ready provisions into new California residential construction for years, and the 2025 edition took effect on 1 January 2026. Between a Level 2 charger, a smart opener, a backup battery and increasingly a battery storage system, the modern California garage carries far more electrical load and far more connected hardware than the one the house was wired for.
Remote open and close, a notification when the door has been left up, and scheduled auto-close. In practice the auto-close and the left-open alert are the features people keep using; the rest is novelty. Every major manufacturer now has a first-party app platform, and add-on retrofit kits exist for openers that predate them.
Health and Safety Code §19891 and §19892, added by SB 969, require residential openers sold, installed or offered for sale in California to include a battery backup that operates the opener during an outage, effective 1 July 2019, with a $1,000 civil penalty attached. When you are pricing an opener in California, the backup is part of the unit, not an upsell.
A detached garage, a stucco wall with wire lath, or a metal-clad structure will defeat the router in the house. Test the signal at the ceiling where the opener will hang, before you buy a connected unit. A mesh node in the garage costs less than the disappointment.
Swapping an opener on an existing receptacle is a door job. A Level 2 charger circuit, a new receptacle in the ceiling, or a panel upgrade is electrical work under Title 24 Part 3 and typically needs an electrical permit and a licensed electrician. If you are doing both, sequence the electrical first — it decides where everything can go.
A connected opener is a door to your house on the internet. Use a unique password and two-factor authentication on the app account, keep the firmware current, and treat the ability to open your garage from a phone as exactly as sensitive as a key.
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