Walla Walla County, WA Fire Regulations: Smoke Detectors (2026)

Walla Walla County Code § 15.04.060(A) governs any dwelling or accessory building moved into the county: it must be structurally sound, with structural defects corrected, and after relocation it must be in substantial conformance with the fire and life-safety requirements of the current building code. The section lists what that conformance may include: smoke alarms installed and interconnected where technically feasible, egress windows, stair landings, railings and guardrails, fire-rated assemblies, and minimum sanitation, ventilation, heat and light requirements. The building official may modify individual requirements case by case where a listed item is not technically feasible in the moved structure. § 15.04.060(B) sets the procedure: dwellings already inside the county must be inspected before relocation by a Walla Walla County building inspector at the applicant's cost, while dwellings moved in from outside the county must instead be inspected by an ICC-certified inspector or a licensed engineer, also at the applicant's cost, to verify structural integrity and code compliance, including the smoke-alarm and life-safety items.

The homeowner must separately clear the move across public rights-of-way with the originating jurisdiction and across county rights-of-way with Walla Walla County public works before any structure may be placed on a county parcel, and a building permit covering the foundation and other pre-location inspection findings must be reviewed and approved first under § 15.04.060(C).