California - Role: Building
| Washington Building |
| Washington Elementary School |
| Washington Firehouse |
| Washington School |
| Washington Union High School |
| Wasserman House |
| Watkins, Commodore James, House |
| Watson Log Cabin |
| Watson School |
| Watts Building |
| Watts Happening Cultural Center |
| Watts Station |
| Watts & Tannahill Company Store |
| Waybur, Julian, House |
| Wayfarers Chapel |
| We and Our Neighbors Clubhouse |
| Webber, John Lee, House |
| Webber Lake Hotel |
| Webster Schoolhouse, Old |
| Wednesday Club of Suisun |
| Weedpatch Camp |
| Wee Kirk |
| Weinberger, J.C., Winery |
| Welch-Hurst |
| Weller House |
| Wellman Hall |
| West Butte Schoolhouse |
| Westerfeld, William, House |
| Western Manufacturing Company Building |
| Westlake Theatre |
| Westminster Presbyterian Church |
| Westminster Presbyterian Church and Cemetery of Tremont |
| West Point Inn |
| West Side Bank |
| Wetmore House |
| Wetzlar, Julius, House |
| Wexler House |
| Whaley House |
| Wheatland Masonic Temple |
| Wheeler Hall |
| Wheeler Hospital |
| Whelan, John A., House |
| Whifler, William A., House |
| White Mansion |
| White, Michael, Adobe |
| Whitley Court |
| Whitmore, Daniel, House |
| Whittier Mansion |
| Wigwam Village No. 7 |
| Wilcox, Benjamin, House |
| Wilford, Albert, Houses |
| Williams, E. Stewart and Mari, House |
| William Shipsey House |
| Williams, Roger Y., House |
| William Tell Saloon and Hotel |
| Willits Carnegie Library |
| Willits Depot |
| Willmore, The |
| Wilmington Branch |
| Wilshire Branch |
| Wilson House |
| Wilson, Warren, Beach House |
| Winchester House |
| Winship-Smernes Building |
| Winters House |
| Withington, George and Eliza, House |
| Woelke, John, House |
| Woman's Athletic Club of San Francisco |
| Woman’s Club of Bakersfield |
| Woman's Club of Hollywood |
| Woman's Club of Lincoln |
| Woman's Club of Lodi |
| Woman's Club of Palo Alto |
| Woman's Club of Redondo Beach |
| Woman's Improvement Club Clubhouse |
| Women's Athletic Club of Alameda County |
| Women's Building, The |
| Women's Twentieth Century Club of Eagle Rock |
| Woodbridge Masonic Lodge No. 131 |
| Woodbury-Story House |
| Woodhills |
| Woodland Opera House |
| Woodland Public Library |
| Woodleaf Hotel |
| Woodside Store |
| Wood, Walter B., House |
| Workman Adobe |
| Wright, George L., House |
| Wright, Lloyd, Home and Studio |
| Wrigley, William, Jr., Summer Cottage |
| Wulff, Capt. N. H., House |
| Wynyate |
| X-100 |
| YMCA Hotel |
| Yolo Branch Library |
| Yolo County Courthouse |
| Yorba, Domingo Adobe and Casa Manuel Garcia |
| Yorba-Slaughter Adobe |
| York House |
| Yosemite Transportation Company Office |
Data from United States Park Service and Wikidata
