Smoke Detectors: Goodyear vs Mesa

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.

Does Mesa have its own smoke detector ordinance?

No. Mesa enforces Arizona Revised Statutes Sec. 36-1637 and the International Fire Code adopted through Title 7 of the Mesa City Code rather than a stand-alone city smoke alarm ordinance. ARS 36-1637 requires an approved smoke detector in every new residential unit and in any existing unit where a sleeping area is remodeled with a permit. Mesa Fire and Medical also recommends monthly testing and replacing alarms every 10 years.

Who is responsible for smoke alarms in a Mesa rental, the landlord or the tenant?

Arizona ARS 36-1637 makes the tenant responsible for keeping the alarm operable, including testing it and replacing batteries. If the tenant gives the landlord written notice that a smoke detector is malfunctioning, the landlord must repair it. Landlords must also provide tenants with written notice of these responsibilities. Mesa enforces this state framework.