Washington - Role: Building
| Washington Athletic Club |
| Washington Building |
| Washington Gas and Electric Building |
| Washington Grocery Company Warehouse |
| Washington Hall |
| Washington Hotel |
| Washington, James W. Jr. & Janie, Home & Studio |
| Washington School |
| Washington School |
| Washington State Library |
| Washington State Normal School Building |
| Waterville Hotel |
| Watt, William, House |
| Weaver, Lawrence and Lydia, House |
| Weinhard, Jacob, House |
| Wells House |
| Wenatchee Carnegie Library |
| Wenatchee Fire Station #1 |
| Wenberg, Dr. Johan and Louise, House |
| Wendel Property |
| West, Dr. Edmond, House |
| West Valley High School |
| Weyerhaeuser Timber Company Office Building |
| Whatcom Museum of History and Art |
| Whitcomb Cabin |
| Whitehouse-Crawford Planing Mill |
| White River Mess Hall and Dormitory |
| White River Patrol Cabin |
| Whitman County Library |
| Whitman Elementary School |
| Whitten Block |
| Wilbur, Ralston and Sarah, House |
| Wilcox, Charles, House |
| Wilke Farmhouse |
| Wilkeson Community House |
| Wilkeson School |
| Willapa Bay Boathouse |
| Willard Building |
| Williams, Hattie, House |
| Williams, Herbert, House |
| Williams, James and Corinne, House |
| Williams, Sidney, House |
| Wilson Creek State Bank |
| Wilson Hotel |
| Windham Apartments |
| Winningham Farm |
| Winslow, Colburn T., House |
| Winters, Frederick W., House |
| Wollochet-Point Fosdick School |
| Women's Club |
| Women's University Club of Seattle |
| Woodbrook Hunt Club |
| Woodinville School |
| Woolrey-Koehler Hop Kiln |
| Woolworth, F.W., Company Store |
| Wreckage, The |
| Wurdemann, Harry Vanderbilt, House |
| Yakima Indian Agency Building |
| Yakima Valley Filipino Community Hall |
| Ye College Inn |
| Y.M.C.A. Building |
| YMCA Building-Walla Walla |
| Young, Fred and Elizabeth, House |
| Young Women's Christian Association |
| Young Women's Christian Association Building |
| Yuncker, John F., House |
| YWCA Building-Seattle |
Data from United States Park Service and Wikidata
