Phoenix City Code Chapter 10 adopts the 2018 IRC including Section R313, requiring automatic fire sprinklers in all new one- and two-family dwellings and townhouses. Arizona has no statewide preemption against the residential sprinkler mandate.
Phoenix has adopted the 2018 International Residential Code (IRC) under City Code Chapter 10 with local amendments. IRC Section R313 requires automatic fire sprinkler systems in all newly constructed one- and two-family dwellings and townhouses. Sprinklers must comply with NFPA 13D, the residential sprinkler standard, designed to control a fire long enough for occupants to escape. Phoenix Fire Department reviews sprinkler plans and conducts inspections. Unlike some Sun Belt states, Arizona has not preempted local residential sprinkler mandates, so Phoenix's requirement stands. Existing homes are not retroactively required to install sprinklers, but substantial renovations or rebuilds may trigger compliance based on the percentage of work and value thresholds in Chapter 10.
Construction without required sprinklers cannot pass final Phoenix Planning and Development inspection, blocking certificate of occupancy. Violations may trigger removal, redesign, civil penalties, and re-inspection fees, plus daily code-enforcement fines until compliance is documented.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Phoenix, AZ
Phoenix City Code Chapter 10 adopts the 2018 International Fire Code, including Section 1010 governing door operation, hardware, and locking arrangements. Eg...
Phoenix, AZ
Phoenix has adopted the International Green Construction Code (IgCC) as a voluntary overlay through Chapter 10. Mandatory provisions appear in cool-roof and ...
Phoenix, AZ
Phoenix allows backyard fire pits and portable outdoor fireplaces, but the Phoenix Fire Code (2018/2024 IFC as amended) Section 307 sets minimum clearances a...
Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle fire sprinkler requirements.
See how Phoenix's fire sprinkler requirements rules stack up against other locations.
Quick Compare
Help us keep this page accurate. If you notice an error or outdated information, let us know.