Tehama County, CA Fire Regulations: Smoke Detectors (2026)

Tehama County does not appear to publish a smoke-detector ordinance separate from state law; the requirements come from the California Health & Safety Code and the California Building/Residential Code as adopted countywide (the county adopted the 2025 California Building Code via Ordinance #2150). Under Health & Safety Code section 13113.7, State Fire Marshal–approved smoke alarms must be installed per the manufacturer's instructions in each dwelling intended for human occupancy — in each sleeping room, in the hallway or area adjacent to sleeping rooms, on every story including basements. Battery-only alarms must use a 10-year sealed battery. Section 13113.8 has required an operable smoke alarm in every single-family dwelling since 1986. For carbon monoxide, Health & Safety Code section 17926 requires a State Fire Marshal–approved CO alarm in any existing dwelling unit that has a fossil-fuel-burning heater or appliance, a fireplace, or an attached garage; single-family homes have needed CO alarms since July 1, 2011. Owners of rented or leased single-family homes (since January 1, 2014) and of multi-unit buildings are responsible for testing and maintaining the required alarms.