Exterior building cladding materials.
RCW 35A.21.443
in effect(1) Except as provided in subsection (3) of this section, a code city is prohibited from requiring or excluding exterior cladding materials that are in compliance with the state building code. (2) "Exterior cladding" means a nonload-bearing material attached to the exterior of a building. (3) The limitation in this section does not apply to homeowners' associations governed by chapter 64.38 RCW, plat communities governed by chapter 64.90 RCW, structures in an area designated as a local historic district, structures located in an area designated as a historic district on the national register of historic places, structures designated as a local, state, or national historic landmark, areas subject to provisions of the international wildland urban interface code adopted by a code city, and any code city with old world Bavarian architectural themed building requirements in law. Furthermore, a code city that adopts building codes requiring fire-resistant siding materials as protection from wildfire is not in violation of the provisions of this section.
(1) Except as provided in subsection (3) of this section, a code city is prohibited from requiring or excluding exterior cladding materials that are in compliance with the state building code.
(2) "Exterior cladding" means a nonload-bearing material attached to the exterior of a building.
(3) The limitation in this section does not apply to homeowners' associations governed by chapter 64.38 RCW, plat communities governed by chapter 64.90 RCW, structures in an area designated as a local historic district, structures located in an area designated as a historic district on the national register of historic places, structures designated as a local, state, or national historic landmark, areas subject to provisions of the international wildland urban interface code adopted by a code city, and any code city with old world Bavarian architectural themed building requirements in law. Furthermore, a code city that adopts building codes requiring fire-resistant siding materials as protection from wildfire is not in violation of the provisions of this section.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=35A.21&full=trueFetched: 6/29/2026