Bellingham, WA Fire Regulations: Smoke Detectors (2026)

Two state statutes set the baseline for residential life-safety alarms in Bellingham: (a) RCW 43.44.110 requires that smoke detection devices be installed in all dwelling units occupied by persons other than the owner on or after December 31, 1981, and in all dwelling units built or manufactured in Washington after December 31, 1980. Devices must conform to nationally accepted standards and follow regulations established by the Washington State Patrol's fire protection director. The owner is responsible for installation; the tenant is responsible for maintenance, including battery replacement. Before reoccupancy following a vacancy, the owner must ensure the device remains operational. For any dwelling unit sold on or after July 1, 2019 that does not already have at least one functional smoke detection device, the seller must provide one before the buyer takes possession. The standard fine is up to $200, with an enhanced penalty of $5,000 if a fire causes property damage, injury, or death when a required device was absent. (b) RCW 19.27.530 requires carbon monoxide alarms in all newly constructed buildings classified as residential occupancies by January 1, 2011 and in all other residential occupancies by January 1, 2013 - covering apartments, condominiums, hotels, motels, and single-family residences. Owner-occupied single-family residences legally occupied before July 26, 2009 are exempt until they are sold; an alarm must be installed outside of each separate sleeping area in the immediate vicinity of each bedroom, on each level of the dwelling, and in accordance with the manufacturer's recommendations. The Washington State Building Code adopts the International Residential Code statewide under RCW 19.27, and the 2021 Washington State Fire Code (WAC 51-54A) adopted by BMC Chapter 17.20 incorporates IFC requirements for smoke alarms in existing R-occupancies.