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

Solano County does not impose a unique local smoke-detector ordinance; the requirements come from California law, which the County applies through its adopted 2025 California Building Standards and Fire Codes. Under California Health & Safety Code 13113.7, every dwelling unit intended for human occupancy must have State Fire Marshal-approved and listed smoke alarms installed per the Fire Marshal's regulations. Since January 1, 1986, every single-family dwelling and factory-built home that is sold must have an operable, approved smoke alarm. Carbon monoxide detectors are required under California Health & Safety Code 17926 (the Carbon Monoxide Poisoning Prevention Act) in every dwelling unit and sleeping unit that has a fuel-burning appliance (gas furnace, water heater, stove, fireplace) or an attached garage. The owner of a rented or leased single-family home or multi-unit building is responsible for testing and maintaining the required smoke and CO alarms. The California Residential Code generally requires alarms in each sleeping room, outside each sleeping area, and on every level, with interconnection and hardwiring for new construction and certain alterations.