2012 IRC/IBC Code Adoption:
New one- and two-family dwellings and townhomes of not more than three stories must be equipped with CO alarms or detectors outside of each separate sleeping area in the immediate vicinity of the bedrooms in dwelling units within which fuel-burning appliances are installed and in dwelling units that have attached garages. Group R occupancies (e.g., hotels, motels, dormitories, and dwelling units within apartment buildings) are required to install CO alarm or detectors. (Effective date: January 1, 2011)