Smoke Detectors: Fallbrook vs San Diego

Where do I have to install smoke alarms in an unincorporated San Diego County home?

Under California Residential Code Section R314.3 (adopted into County Code Title 9), smoke alarms must be installed in each sleeping room, outside each separate sleeping area in the immediate vicinity of the bedrooms, and on each additional story of the dwelling, including basements and habitable attics. Crawl spaces and uninhabitable attics are excluded. Alarms must be listed to UL 217 and comply with NFPA 72.

Do I have to upgrade my old smoke alarms when I remodel?

Yes. CRC R314.2.2 requires existing dwellings to be brought up to current smoke-alarm standards when a building permit is issued for alterations, repairs, or additions valued over $1,000. Where no wall or ceiling finishes are removed, the retrofit alarms may be battery-operated; otherwise, hardwired interconnected alarms with battery backup are required. The County PDS Building Division verifies compliance at final inspection.

Do I need to do anything about smoke alarms when I sell my house?

Yes. California Health and Safety Code Section 13113.8 requires the seller of a one- or two-unit single-family dwelling to deliver a written statement to the buyer before transfer of title confirming that the dwelling is in compliance with the smoke-alarm requirements. The exclusive remedy for failure to deliver the statement is actual damages up to $100, but failure does not invalidate the sale.

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.