Pittsburg, CA Building Safety: Carbon Monoxide Detectors (2026)

Under California Health and Safety Code section 13260 through 13263 and the Carbon Monoxide Poisoning Prevention Act of 2010 (SB 183), every single-family dwelling that has a fossil-fuel burning heater, appliance, fireplace, or an attached garage must have one or more carbon monoxide alarms. The California Residential Code section R315 requires alarms to be installed outside each separate sleeping area in the immediate vicinity of the bedrooms, on every story of the dwelling including basements, and within the listed proximity of bedrooms in dwellings with attached garages. Combination smoke/CO alarms are acceptable if they are listed to both UL 217 and UL 2034 and bear a State Fire Marshal listing. Battery-powered, plug-in, and hardwired models are permitted; California does not yet require a 10-year sealed battery for CO alarms the way it does for smoke alarms, but 10-year sealed-battery CO alarms are strongly recommended. When a permit is issued for alterations, repairs, additions, or the installation of new fuel-burning appliances in an existing dwelling, the entire dwelling must be brought into compliance with current CO alarm requirements. At the sale of a single-family home, the transferor must provide the transferee with written disclosure of any known violations. Multi-family properties have been required to comply since January 1, 2013.