Yavapai County, AZ Building Safety: Fire Sprinkler Requirements (2026)

Ordinance 2025-4, adopted by the Board of Supervisors for the unincorporated area effective January 1, 2026, repeals prior Ordinance 2019-3 and adopts the 2024 International Residential Code with local amendments. Two of those amendments define the county's actual sprinkler posture. 9, which routes fire-suppression matters to the individual fire district holding State Fire Marshal authorization for that area, or to the State Fire Marshal directly where no fire district exists. 1(2), Note a, the table governing reduced fire-separation-distance walls. 05 gpm/ft2 density, and garage doors cannot be treated as obstructions when sprinkler heads are placed.

1(1) face no sprinkler trigger from this section at all. 1 further ties reduced exterior-wall fire-separation distances to whole-subdivision sprinkler coverage approved by the fire district, so the sprinkler question in practice turns on which wall table a builder chooses, not a blanket per-dwelling mandate.