Murrieta, CA Fire Regulations: Smoke Detectors (2026)

Smoke alarm rules in Murrieta are primarily governed by state law, specifically California Health and Safety Code section 13113.7 and California Residential Code R314. All dwellings must have smoke alarms installed inside each sleeping room, in the hallway or area immediately outside the bedrooms, and on every story of the dwelling including basements and habitable attics. For new construction and substantial remodels, alarms must be hardwired with battery backup and interconnected so that activation of any one alarm sounds all. For existing dwellings, replacement alarms sold and installed after July 1, 2015 must contain a non-replaceable, non-removable 10-year sealed battery and must be State Fire Marshal listed. Landlords and sellers must install and test smoke alarms before tenancy begins or escrow closes, and transfers of residential property after January 1, 2016 require written disclosure of alarm presence and functionality. Carbon monoxide alarms are required under H and S Code 17926 in any home with an attached garage, fireplace, or fuel-burning appliance. Enforcement is through Murrieta Building and Safety at permit close-out, and through Fire Prevention inspections.