WA SB5571

Cities, code cities, and counties are prohibited from requiring or excluding exterior cladding materials that comply with the state building code, effective July 27, 2025

"Exterior cladding" is defined as nonload-bearing material attached to the exterior of a building

Exemptions include homeowners' associations, plat communities, local and national historic districts, historic landmarks, and areas subject to international wildland urban interface code

Cities and towns with old world Bavarian architectural themed building requirements in law are exempt, as are county structures adjacent to such jurisdictions

Local governments may still adopt building codes requiring fire-resistant siding materials for wildfire protection without violating the law