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

No Imperial County-specific smoke-detector ordinance was found; the controlling rules are California statewide standards applied through the California Residential and Fire Codes that the county enforces. Under California Health and Safety Code Section 13113.7 and the building code, smoke alarms must be installed in each sleeping room (bedroom), in the hallway or area immediately outside each sleeping area, and on every story of the dwelling, including basements, per the manufacturer's instructions. For rental housing, the landlord is responsible for installing the alarms and ensuring they work at the start of a tenancy. California also requires carbon-monoxide alarms: under state law, a CO alarm must be installed outside each separate sleeping area in the immediate vicinity of the bedrooms in any dwelling unit that has a fuel-burning appliance (such as a gas furnace, water heater, stove or fireplace) or an attached garage. Newer construction must use alarms meeting current code, and many require 10-year sealed batteries or hardwiring with battery backup. These requirements apply to homes throughout unincorporated Imperial County. Because they are statewide minimums, the county's Building and Fire officials verify smoke and CO alarms during permitted construction, remodels and resale or rental inspections rather than through a separate local ordinance.