Northwest Regional Office
Island, King, Kitsap, San Juan, Skagit, Snohomish, and Whatcom counties
Southwest Regional Office
Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, and Wahkiakum counties
Central Regional Office
Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, and Yakima counties
Eastern Regional Office
Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, and Whitman counties
Federal site inspector
Headquarters
International Code Council (ICC): 1‑800‑423‑6587