Private owner

William R. Nash House (Harris County, Texas)
William R. Smith House (Muskingum County, Ohio)
William R. Thorsen House (Alameda County, California)
William R. Wing Farm Complex (Schenectady County, New York)
William R. Wolf House (Waseca County, Minnesota)
William Rainey Harper Log House (Muskingum County, Ohio)
William Rand Tavern (Isle of Wight County, Virginia)
William Randolph House (Robertson County, Tennessee)
William Rankin and Elizabeth Wharton Smith House (Guilford County, North Carolina)
William Rea Store (Hertford County, North Carolina)
William Redding House (Grant County, New Mexico)
William Reed House (Jefferson County, Alabama)
William Resor House (Hamilton County, Ohio)
William Reuben Nims House (Sanilac County, Michigan)
William Richardson House (Cayuga County, New York)
William Riggert House (Sauk County, Wisconsin)
Queen Anne style home
William Riley Abbott House (Camden County, North Carolina)
William Riley Scheurer House (Marion County, Oregon)
William Ritter House (Richland County, Ohio)
William Ritzman House (Stephenson County, Illinois)
William Robb House (Charleston County, South Carolina)
William Robertson House (Berkeley County, South Carolina)
William Robinson House (Beaver County, Utah)
William Robinson House (Beaver County, Utah)
William Robinson P., House (Lafayette County, Missouri)
William Rogers House (Lee County, South Carolina)
William Ross Rust House (Pierce County, Washington)
William Russell House (Sussex County, Delaware)
William Russell House (Iron County, Michigan)
William S. and Mary Beckett House (Cooper County, Missouri)
William S. Campbell House (Williamson County, Tennessee)
William S. Clark House (Humboldt County, California)
William S. Delano House (Kalamazoo County, Michigan)
William S. Edsall House (Allen County, Indiana)
William S. Gilliland Log Cabin and Cemetery (Kanawha County, West Virginia)
WILLIAM S. MITCHELL (dredge) (Jackson County, Missouri)
William S. Powell House (Caldwell County, Kentucky)
William S. Rogers House (Washington County, Texas)
William S. Simmons Plantation (Floyd County, Georgia)
William S. Smith House (Somerset County, Maryland)
William S. Townsend House (Cape May County, New Jersey)
William S. Warfield House (Adams County, Illinois)
William S. Weir Jr., House (Warren County, Illinois)
William Sauntry House and Recreation Hall (Washington County, Minnesota)
William Scarbrough House (Chatham County, Georgia)
William Schneemann House (Tom Green County, Texas)
William Scott Farmstead (Isle of Wight County, Virginia)
William Seabrook House (Charleston County, South Carolina)
William Seel Building (Dauphin County, Pennsylvania)
William Seher House (Lorain County, Ohio)
William Shaver House (Sharp County, Arkansas)
William Shelly School and Annex (York County, Pennsylvania)
William Shepherd House (Steuben County, New York)
William Sherman Jennings House (Hernando County, Florida)
William Shindler House (Clackamas County, Oregon)
William Shirts House (Monroe County, New York)
William Sidenfaden House (Ada County, Idaho)
William Skees House (Hardin County, Kentucky)
William Sleadd Farm (Shelby County, Kentucky)
William Smith House (Summit County, Ohio)
William Smith House (Loudoun County, Virginia)
William Smith House (Bucks County, Pennsylvania)
William Smith House (Arapahoe County, Colorado)
William Smith Ingham House (Cayuga County, New York)
William Soaper Farm (Henderson County, Kentucky)
William Spence House (Carson City, Nevada)
William Sprigg House (Hardin County, Kentucky)
William Stearns House (Hamilton County, Ohio)
William Stearns Ranch (Custer County, South Dakota)
William Steele House (Williamson County, Tennessee)
William Steinmeyer House (Milwaukee County, Wisconsin)
Former residence converted to a multi-family dwelling
William Sternberg House (Sedgwick County, Kansas)
William Stevens House (Kent County, Delaware)
William Stolte Jr., House (Sauk County, Wisconsin)
Queen Anne House with a conical roof over the tower and a wrap-around porch
William Stolte Sr., House (Sauk County, Wisconsin)
Combination of Queen Anne and Victorian Features with two front porches
William Stone House (St. Francis County, Arkansas)
William Strickland Row (Philadelphia County, Pennsylvania)
William Strong House (Fillmore County, Minnesota)
William Strong House (Fillmore County, Minnesota)
William Stuart Seeley House (Sanpete County, Utah)
William Sturgis House (Laramie County, Wyoming)
William Suiter House (Scott County, Iowa)
William Swain House (Whitman County, Washington)
William Swarthout Farm (Yates County, New York)
William Swortz House (Yates County, New York)
William Syphax School (Washington, District of Columbia)
William T. Alexander House (Mecklenburg County, North Carolina)
William T. and Rebecca Glendenning House (Marshall County, South Dakota)
William T. Gentry House (DeKalb County, Georgia)
William T. Goodrich House (Scott County, Iowa)
William T. Hendrick House (Contra Costa County, California)
William T. Lafferty House (Harrison County, Kentucky)
William T. Leitch House (Dane County, Wisconsin)
William T. Shepard House (Covington County, Alabama)
William T. Townsend House (Erie County, Ohio)
William T. Tull House (Somerset County, Maryland)
William T. Vitt House (Franklin County, Missouri)
William T. Vogler Cottage (Alleghany County, North Carolina)
William T.E. Wilson Homestead (Deschutes County, Oregon)
William Talley House (New Castle County, Delaware)
William Talley House (Graham County, Arizona)
William Taylor House (Clark County, Kentucky)
William Teague House (Chatham County, North Carolina)
William Teater House (Garrard County, Kentucky)
William Tell Saloon and Hotel (Napa County, California)
William Terrell Homeplace (Gwinnett County, Georgia)
William Thomas Abington House (White County, Arkansas)
William Thomas House (Centre County, Pennsylvania)
William Thomas O'Brien House (Durham County, North Carolina)
William Thomas Turner Barn (Johnson County, Kansas)
William Thompson House (Benton County, Tennessee)
William Thompson House (Beaver County, Utah)
William Thompson House (Boyle County, Kentucky)
William Thompson Jr., House (Beaver County, Utah)
William Tichenor House (Hardin County, Kentucky)
William Treadwell House (Hillsdale County, Michigan)
William Tretheway House (Summit County, Utah)
William V. Carr House (Scott County, Iowa)
William Van Altena House (Milwaukee County, Wisconsin)
Historically significant Ernest Flagg designed stone masonry house
William Volker Building (King County, Washington)
William Volker House (Jackson County, Missouri)
William W. and Christene Wilson House (Salt Lake County, Utah)
William W. Early House (Prince George's County, Maryland)
William W. Gray House (White County, Illinois)
William W. Jarvis House (Madison County, Illinois)
William W. Johnson House (Williamson County, Tennessee)
William W. Kimball House (Cook County, Illinois)
William W. Marsh House (De Kalb County, Illinois)
William W. Olliff Farm (Bulloch County, Georgia)
William W. Van Ness House (Columbia County, New York)
William W. Webster House (Wright County, Minnesota)
William Waddell House (Ashe County, North Carolina)
William Walker House (Madison County, Kentucky)
William Walker Jr., House (Wyandot County, Ohio)
William Waller House (Cook County, Illinois)
William Walter Newton House (Cherokee County, Texas)
William Washington Seay House (Wilson County, Tennessee)
William Waterfield House (Black Hawk County, Iowa)
William Watkins House (Maury County, Tennessee)
William Watt House (Yakima County, Washington)
William Watters House (Talladega County, Alabama)
William Weaver House (Alleghany County, North Carolina)
William Welch House (Washington County, Arkansas)
William Wells House (Tyler County, West Virginia)
William Werner House (Lancaster County, Pennsylvania)
William Westcott House (Clay County, Florida)
William Westerfeld House (San Francisco County, California)
William Wheeler House (Victoria County, Texas)
William Whitley House State Shrine (Lincoln County, Kentucky)
William Whitney House (Du Page County, Illinois)
William Wiggins House (Polk County, Tennessee)
William Wilson House (Berkeley County, West Virginia)
William Wilson House (Hardin County, Kentucky)
William Winter Stone House (Clermont County, Ohio)
William Wombough House (Steuben County, New York)
William Woodrow House (Trumbull County, Ohio)
William Woodruff House (Pulaski County, Arkansas)
William Woolfolk House (Oldham County, Kentucky)
William Wright Faison House (Duplin County, North Carolina)
Greek revival style, antetbellum plantation home
William Wrigley Jr., Winter Cottage (Maricopa County, Arizona)
William Young House (New Castle County, Delaware)
William Zachow Farmstead (Door County, Wisconsin)
Williams and Stancliff Octagon Houses (Middlesex County, Connecticut)
Williams Block (Kennebec County, Maine)
Williams Chapel A.M.E. Church (Orangeburg County, South Carolina)
Williams Deluxe Cabins (Chester County, Pennsylvania)
Williams Family Farm (Carroll County, Georgia)
Williams Farm (Dutchess County, New York)
Williams Frazier Farmstead (Umatilla County, Oregon)
Williams Grove (Worcester County, Maryland)
Williams Historic Business District (Coconino County, Arizona)
Williams House (Clermont County, Ohio)
Williams House (Broward County, Florida)
Williams House (New Castle County, Delaware)
Williams House (Johnson County, Kentucky)
Williams House (Mercer County, Kentucky)
Williams House (Ravalli County, Montana)
Williams House (White County, Arkansas)
Williams House (De Soto Parish, Louisiana)
Williams House (Leon County, Florida)
Williams House (Allendale County, South Carolina)
Williams House (Tazewell County, Virginia)
Williams House and Associated Farmstead (Madison County, Arkansas)
Williams Piano Company House (Minnehaha County, South Dakota)
Williams Place (Spartanburg County, South Carolina)
Williams Plains (Prince George's County, Maryland)
Williams School (Le Flore County, Oklahoma)
Williams Smith House (Napa County, California)