Smoke Detectors: Oceanside vs San Diego

Does San Diego County have its own smoke detector law for homes?

No. Residential smoke alarm requirements come from California state law (Health & Safety Code 13113.7 and 13113.8) and the California Building/Residential Codes that the County adopts, not a separate county ordinance. Alarms must be State Fire Marshal-listed and in every bedroom.

Do I need smoke alarms to sell my home?

Yes. Under Health & Safety Code section 13113.8, every single-family dwelling sold must have an operable, properly located smoke alarm at the date of title transfer, and the seller must give the buyer a written statement of compliance.

Where must smoke alarms be installed in a San Diego home?

Under 2022 California Residential Code Section R314, adopted by SDMC Chapter 14, Article 5, smoke alarms must be installed in each sleeping room, outside each separate sleeping area within 21 feet of a bedroom door, and on each additional story of the dwelling including basements and habitable attics. Ceiling-mounted alarms must be at least 4 inches from any wall, and wall-mounted units must sit 4 to 12 inches below the ceiling.

Do existing San Diego homes need hard-wired smoke alarms?

California Health and Safety Code Section 13113.7 requires functioning smoke alarms in every existing dwelling, but battery-only units are allowed where no construction is occurring, provided they have the 10-year sealed lithium battery required by HSC Section 13114 for any alarm sold since July 2014. New construction, additions, and alterations valued over $1,000 trigger CRC R314.2.2 requiring hard-wired interconnected alarms with battery backup.

When do I have to upgrade smoke alarms during a remodel?

If you pull a permit in the City of San Diego for alterations, repairs, or additions that exceed $1,000 in valuation, or for any project that adds or alters a sleeping room, CRC R314.2.2 and SDMC Chapter 14 require the entire dwelling to meet the new-construction standard: smoke alarms in each sleeping room, outside each sleeping area, and on every story, hard-wired and interconnected where access exists in attics or crawl spaces.