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

California Health and Safety Code Section 17926(a) required owners of existing single-family homes to install a carbon monoxide device by July 1, 2011, all other existing dwelling units by January 1, 2013, and existing hotel and motel units by January 1, 2017 -- deadlines that have all passed, so the installation duty now applies to every qualifying Fresno dwelling with a fossil-fuel heater or appliance, a fireplace, or an attached garage. Section 17926(b) requires the devices to go in following the placement standards that apply to new construction of that occupancy type, or the manufacturer's instructions if that isn't feasible.

The statute expressly lets a city add its own carbon monoxide ordinance on top of the state rule as long as it's consistent with the chapter, and Fresno has done exactly that in one specific setting: Fresno Municipal Code Section 15-3906(D)(5) requires condominium conversion projects to install smoke and carbon monoxide alarms of a type, number, and location approved by the Building Official under the Building Code, as a condition tied to the conversion's Conditional Use Permit. That local condition applies on top of Section 17926's citywide statutory duty whenever a rental building is converted to condominiums.

Outside the condo-conversion context, Fresno relies on the state statute directly rather than a separate municipal alarm ordinance, so enforcement of the general duty runs through the same remedies the statute itself provides.