Smoke Detectors: Phoenix vs Surprise
How do smoke detectors rules compare between Phoenix, AZ and Surprise, AZ?
Phoenix has fewer restrictions than Surprise.
Phoenix, AZ
Maricopa County
Phoenix follows the 2018 Phoenix Building Construction Code Chapter 9 (IBC/IRC) and Ordinance G-5898 (effective April 18, 2014). Smoke alarms are required in every bedroom, outside each sleeping area, and on every story; alarms must be interconnected. Battery-only alarms must be UL-listed with a sealed 10-year lithium battery. Statewide A.R.S. § 36-1637 governs landlord/tenant duties.
View full Phoenix rules →Surprise, AZ
Maricopa County
Surprise requires smoke detectors in all residential dwellings per the adopted International Residential Code and International Fire Code. Detectors must be in every bedroom, outside sleeping areas, and on every level. Carbon monoxide detectors are required where fuel-burning appliances are present.
View full Surprise rules →Key Facts Comparison
| Fact | Phoenix | Surprise |
|---|---|---|
| Code Reference | PBCC 2018 Ch. 9 / IRC R314 | - |
| City Ordinance | G-5898 (eff. 4/18/2014) | - |
| Battery Type | Sealed 10-yr lithium (UL listed) | - |
| Required Locations | Each bedroom, hallway, every story | - |
| Interconnection | Required within unit | - |
| Statewide Rule | A.R.S. § 36-1637 | - |
| Bedrooms | - | Detector in every bedroom |
| Hallways | - | Outside each sleeping area |
| CO Detectors | - | Required with fuel-burning appliances |
| Rental Law | - | ARS 36-1637 |
| Surprise Fire | - | (623) 222-4810 |
Highlighted rows indicate differences between cities.
Phoenix FAQ
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.
Surprise FAQ
Where do I need smoke detectors in my Surprise home?
Inside every bedroom, outside each sleeping area in hallways, and on every level of the home. New construction requires hardwired interconnected alarms with battery backup.
Do I need carbon monoxide detectors?
Yes, if your home has fuel-burning appliances (gas furnace, water heater, fireplace) or an attached garage.
Does Surprise offer free smoke detectors?
Surprise Fire-Medical Department offers smoke alarm installation programs for qualifying residents. Contact them at (623) 222-4810.
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