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SB 1183

accessory dwelling units; fire sprinklers

57th Legislature - Second Regular Session Introduced by John Kavanagh and 1 co-sponsor

Arizona bill SB 1183 adjusts fire sprinkler safety requirements for accessory dwelling units to balance housing affordability against fire code standards.

Senate First Reading
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Bill Summary · SB 1183

Legislative bill overview

SB 1183 addresses fire sprinkler requirements for accessory dwelling units (ADUs) in Arizona. The bill modifies existing fire safety code provisions to clarify or adjust sprinkler installation mandates for these secondary residential structures on single-family properties.

Why is this important

ADUs have become an increasingly popular housing solution to address affordability and density in residential areas. Fire safety standards directly impact construction costs, development feasibility, and homeowner liability—making sprinkler requirements a significant factor in whether ADUs remain economically viable for property owners considering these units.

Potential points of contention

  • Construction cost impact: Mandatory fire sprinkler systems increase ADU development costs, potentially pricing out smaller developers and lower-income property owners from participating in this housing solution
  • Code consistency debate: Different sprinkler standards between ADUs and primary residences could create confusion and enforcement challenges, or conversely, exempting ADUs might raise fire safety concerns
  • Urban sprawl vs. density trade-off: Stricter requirements may discourage ADU construction, reducing housing density in single-family neighborhoods, while relaxed requirements could create safety inequities based on housing type

Compiled from official sources — confirm details with the bill’s official record.

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