New law goes into effect as of April 1, 2012 for sellers of single family homes in Washington.
Effective April 1, 2012, RCW 19.27.530 requires the seller of any owner-occupied single-family residence to equip the residence with carbon monoxide alarms in accordance with the state building code before a buyer or any other person may legally occupy the residence following the sale. 1 This requirement applies to all single family residences, including single family homes, condominiums, and manufactured/mobile homes.
The building code (WAC 51-51-0315) requires that an alarm be installed: (1) outside of each separate sleeping area in the immediate vicinity of each bedroom; (2) on each level of the dwelling; and (3) in accordance with the manufacturer's recommendations. The building code also requires that single station carbon monoxide alarms comply with UL 2034. 2 There are no exceptions for properties that do not have fuel-fired appliances or an attached garage. The alarms may be battery operated and can be purchased for as little as $25 from a variety of sources.
Information provided by the Northwest Multiple Listing Service.