Smoke Detectors: Goodyear vs Phoenix

Does unincorporated Maricopa County require smoke detectors in homes?

Yes. Arizona Revised Statutes Section 36-1637 requires an approved smoke detector in each new residential housing unit during construction, and in any existing unit where a sleeping area is remodeled under permit. The Maricopa County Planning & Development Department enforces this through building permits and the adopted International Residential Code, which adds placement and power-source requirements under Section R314.

Who is responsible for maintaining smoke detectors in a Maricopa County rental?

Section 36-1637 places the duty on the tenant to maintain and keep the smoke detector operable. Once the tenant provides the landlord with written notice of a malfunction, the landlord is responsible for the repair. The landlord must also give the tenant written notice of the tenant's responsibilities under the statute.

Where do smoke alarms have to be installed in a new home in unincorporated Maricopa County?

Maricopa County enforces the International Residential Code Section R314 as part of its adopted building codes. R314 requires smoke alarms inside each sleeping room, outside each separate sleeping area in the immediate vicinity of bedrooms, and on every story of the dwelling, including basements. New construction units must be hard-wired with battery backup and interconnected so all alarms sound when one is triggered.

Where do smoke alarms have to be installed in a Phoenix home?

Under the 2018 Phoenix Building Construction Code (Chapter 9, IRC R314), smoke alarms are required inside every bedroom, in the hallway or area immediately outside each sleeping area, and on every story of the dwelling, including basements and habitable attics. All alarms within a single unit must be interconnected so one alarm triggers them all. Confirm details with Phoenix Planning & Development at 602-262-7811.

What kind of smoke alarm batteries does Phoenix require?

Phoenix Ordinance G-5898 (effective April 18, 2014) requires that battery-operated smoke alarms sold or installed in the city be UL-listed units with a sealed, non-removable 10-year lithium battery. No smoke alarm may be used more than 10 years past its date of manufacture; check the back of the unit and replace if older. For rental homes, A.R.S. § 36-1637 makes the landlord responsible for repairs after written tenant notice.