Glendale, AZ Fire Regulations: Smoke Detectors (2026)

Arizona state law at ARS 36-1637 sets the baseline smoke-detector rule for every residential housing unit in the state, including those in Glendale. The statute requires (a) installation of an approved smoke detector during construction of any new residential housing unit, and (b) installation in an existing unit when a sleeping area is remodeled in a way that requires a building permit from the local political subdivision. Glendale enforces these placement and listing standards through its building code, codified at Chapter 9 of the Code of Ordinances, which adopts the International Residential Code (IRC) and International Building Code (IBC) editions in force at the time of permit issuance. Under the IRC, smoke alarms must be installed inside each sleeping room, outside each separate sleeping area in the immediate vicinity of bedrooms, and on each additional story of the dwelling including basements. New construction and substantial remodels also require interconnection so that activation of one alarm sounds all alarms, and a primary AC power source with battery backup. ARS 36-1637 places day-to-day maintenance on the tenant once the alarm is installed, with the landlord responsible for repair after written notice of malfunction; the landlord must give the tenant written notification of these duties at move-in. For exact alarm listing standards (UL 217), interconnection rules, and any local amendments to the IRC adopted by Glendale, confirm with the Glendale Building Safety Division at 623-930-3190 and the Glendale Fire Department Fire Prevention Bureau at 623-930-2999.