Lon Rogers House (Boyd County, Kentucky)
Londershausen House (Yamhill County, Oregon)
Londershausen House (Yamhill County, Oregon)
London Cottage (Chatham County, North Carolina)
Lone Beech (McDowell County, North Carolina)
Lone Oaks (Roanoke County, Virginia)
Lone Pine (Avoyelles Parish, Louisiana)
Lone Pine (Edgecombe County, North Carolina)
Lonetree (Chouteau County, Montana)
Long Branch (Clarke County, Virginia)
Long Hill (Wicomico County, Maryland)
Long House (Miami-Dade County, Florida)
Long House (Flathead County, Montana)
Long Meadow (Frederick County, Virginia)
Long Meadow (Hawkins County, Tennessee)
Long Meadow (Rockingham County, Virginia)
Long Meadows (Washington County, Maryland)
Long, McCorkle and Murray Houses (Catawba County, North Carolina)
Long--Mueller House (Montgomery County, Ohio)
Long--Romspert House (Montgomery County, Ohio)
Long-Briggs House (Logan County, Kentucky)
Long-Waterman House (San Diego County, California)
Longbotham, Nathaniel, House (Suffolk County, New York)
Longfellow National Historic Site (Middlesex County, Massachusetts)
Longfellow, Stephen, House (Cumberland County, Maine)
Longfellow-Hastings House (Los Angeles County, California)
Longfield (Bristol County, Rhode Island)
Longino House (Lawrence County, Mississippi)
Longland (Bucks County, Pennsylvania)
Longleat (Davidson County, Tennessee)
Longue Vue House and Gardens (Orleans Parish, Louisiana)
Longue Vue Island (Jefferson County, New York)
Longview (Scott County, Kentucky)
Longview (St. James Parish, Louisiana)
Longview (Cape Girardeau County, Missouri)
Longview (Davidson County, Tennessee)
Longview (Rapides Parish, Louisiana)
Longview Farm House (Logan County, Kentucky)
Longwood (Louisa County, Virginia)
Longwood (Adams County, Mississippi)
Longwood (Caswell County, North Carolina)
Longwood (East Baton Rouge Parish, Louisiana)
Longwood (Albemarle County, Virginia)
Longwood House (Prince Edward County, Virginia)
Longwood House (Jackson County, Florida)
Lonnie A. Pope House (Coffee County, Georgia)
Lonnie and Francis Ayres Ranch (Custer County, South Dakota)
Lookaway Hall (Aiken County, South Carolina)
Loomis House (King County, Washington)
Loomis, Capt. James, House (Hartford County, Connecticut)
Loomis, George G., House (Hartford County, Connecticut)
Loomis, Gordon, House (Hartford County, Connecticut)
Loomis, Ira, Jr., House (Hartford County, Connecticut)
Loomis--Pomeroy House (Tolland County, Connecticut)
Looney House (St. Clair County, Alabama)
Looney-- French House (Randolph County, Arkansas)
Lopez Adobe (Los Angeles County, California)
Lorado Taft Midway Studios (Cook County, Illinois)
Lord House (Pike County, Pennsylvania)
Lord Mansion (York County, Maine)
Lord Stirling Manor Site (Somerset County, New Jersey)
Lord, Capt. Enoch, House (New London County, Connecticut)
Lord, Capt. Nathaniel, Mansion (York County, Maine)
Lord, Dr. John, House (Chautauqua County, New York)
Lord, James C., House (Androscoggin County, Maine)
Lord--Dane House (York County, Maine)
Lord--Heuston House (Pierce County, Washington)
Lord-Baylies-Bennett House (Bristol County, Massachusetts)
Lorenz and Lugerde Ginthner House (Wabasha County, Minnesota)
Lorenzo and Ruth Wells Palmer House (Lenawee County, Michigan)
Lorenzo Mansion (Madison County, New York)
Loretta (Fauquier County, Virginia)
Loretta Herrington House (Carter County, Missouri)
Loretto (Wythe County, Virginia)
Loretz House (Lincoln County, North Carolina)
Lorin Cray House (Blue Earth County, Minnesota)
Lorine Niedecker Cottage (Jefferson County, Wisconsin)
Loring House (Alameda County, California)
Loring, George, House (Middlesex County, Massachusetts)
Loring, Harrison, House (Suffolk County, Massachusetts)
Loring-Greenough House (Suffolk County, Massachusetts)
Los Alamos Ranch House (Santa Barbara County, California)
Los Cerritos Ranch House (Los Angeles County, California)
Los Luceros Hacienda (Rio Arriba County, New Mexico)
Los Nogales (Guadalupe County, Texas)
Losee, Isaac, House (Suffolk County, New York)
Lost Lake Guard Station (Okanogan County, Washington)
Lot Hathaway House (Geauga County, Ohio)
Lothrop Mansion (Washington, District of Columbia)
Lothrop, Caleb, House (Norfolk County, Massachusetts)
Lothrop, Joseph, House (Worcester County, Massachusetts)
Lott Cary Birth Site (Charles City County, Virginia)
Lott, Hendrick I., House (Kings County, New York)
Lotz House (Williamson County, Tennessee)
Lou Ellen Parmelee House (Monterey County, California)
Lou Henry Hoover House (Santa Clara County, California)
Loudermilk Boarding House (Habersham County, Georgia)
Loudoun House (Fayette County, Kentucky)
Louie James House (Greenville County, South Carolina)
Historic home in Greer, SC
Louis A. Crandall House (Linn County, Oregon)
Louis A. Penfield House (Lake County, Ohio)
Louis and Bessie Tarpley House (Multnomah County, Oregon)
Louis and Elizabeth Woerner House (Multnomah County, Oregon)
Louis and Ellen Olson House (King County, Washington)
Louis and Mathilde Reuter House (Travis County, Texas)
Louis Auguste Benoist House (St. Louis County, Missouri)
Louis B. Simmons House (Stephens County, Oklahoma)
Louis Beatty House (Erie County, Ohio)
Louis Beckwith House (Davison County, South Dakota)
Louis Bergdoll House (Philadelphia County, Pennsylvania)
Louis Bolduc House (Ste. Genevieve County, Missouri)
Louis Carufel and E. LaRose, House (Rice County, Minnesota)
Louis Curtiss Studio Building (Jackson County, Missouri)
Louis Delcommune House (Ste. Genevieve County, Missouri)
Timber frame and horizontal log house
Louis Ducros House (Pinellas County, Florida)
Historic home that was removed from the NRHP after being moved to a new location
Louis E. Bryant House (Scott County, Tennessee)
Louis F. Swift House (Lake County, Illinois)
Louis F. Worthing House (Wharton County, Texas)
Louis H. Peters House (Franklin County, Missouri)
Louis Hebert House (Scott County, Iowa)
Louis Hirsig House (Dane County, Wisconsin)
Louis Hultgren House and Sand Pit (Pine County, Minnesota)
Louis J. and Harriet Rozier House (Jefferson County, Missouri)
Louis Jehle House (Christian County, Illinois)
Louis Kissel House (Washington County, Wisconsin)
Queen Anne built by the patriarch of the Kissel industrial family
Louis Kohmueller House (Franklin County, Missouri)
Louis Levey Mansion (Marion County, Indiana)
Louis Levine House (Iron County, Michigan)
Louis Marchetti House (Marathon County, Wisconsin)
Louis May House (Ravalli County, Montana)
Louis McLane House (New Castle County, Delaware)
Louis Menand House (Albany County, New York)
Louis N. and Helen Seaman House (Davison County, South Dakota)
Louis Pfunder House (Multnomah County, Oregon)
Louis Rings Residence (Franklin County, Ohio)
Louis S. Marsh House (King County, Washington)
Louis Sawyer House (Hamilton County, Ohio)
Louis Sincer House (Orleans Parish, Louisiana)
Louis Smith Tainter House (Dunn County, Wisconsin)
Louis Stephan House (Ada County, Idaho)
Louis Sturm House (Washtenaw County, Michigan)
Louis Vangindertahlen House (Door County, Wisconsin)
Louis Volin House (Yankton County, South Dakota)
Louis W. Harris House (Beaver County, Utah)
Louisa Garrett House (St. Louis County, Missouri)
Louise C. Bentz House (Los Angeles County, California)
Louise Chandler Anderson House (Spokane County, Washington)
Louise Massey House (Chaves County, New Mexico)
Lounsbury, Phineas Chapman, House (Fairfield County, Connecticut)
Louviers (New Castle County, Delaware)
Lovejoy and Merrill-Nowlan Houses (Rock County, Wisconsin)
Lovejoy, A. L., House (Middlesex County, Massachusetts)
Lovejoy, Charles, House (Essex County, Massachusetts)
Lovell Beach House (Orange County, California)
Lovell House (Los Angeles County, California)
Lovell, Capt. George, House (Barnstable County, Massachusetts)
Lovell, Nehemiah, House (Barnstable County, Massachusetts)
demolished in 1994
Lovell-Webber House (Ionia County, Michigan)
Lovering, Joseph, House (Middlesex County, Massachusetts)
Lovett Lee House (Sampson County, North Carolina)
Lovin & Withers Investment House (Mohave County, Arizona)
Low House (Guilford County, North Carolina)
Low House (Litchfield County, Connecticut)
Low, Joseph W., House (Penobscot County, Maine)
Low, Thomas, House (Essex County, Massachusetts)
Lowe-Forman House (Orleans Parish, Louisiana)
Lowell Damon House (Milwaukee County, Wisconsin)
Wauwatosa's oldest residence and a classic example of a colonial home.
Lowell E. Walter House (Buchanan County, Iowa)
Lowell Observatory (Coconino County, Arizona)
Lowell Redden House (Maricopa County, Arizona)
Lowell, The (Middlesex County, Massachusetts)
Lowenstein House (Shelby County, Tennessee)
Lower Louviers and Chicken Alley (New Castle County, Delaware)
Lower Pargoud (Ouachita Parish, Louisiana)
Lower Swedish Cabin (Delaware County, Pennsylvania)
Lowery Clevenger House (San Miguel County, New Mexico)
Lowland Cottage (Gloucester County, Virginia)
Lowndes Grove (Charleston County, South Carolina)
Lowndesboro (Lowndes County, Alabama)
Lowry House (Madison County, Alabama)
Open limited hours as a museum and for special events
Lowther House Complex (Lee County, Alabama)
Loy Kirksey House (Clark County, Arkansas)
Loyd Hall Plantation (Rapides Parish, Louisiana)
Lt. George W. Lee House (Shelby County, Tennessee)
Lua Curtiss House I (Miami-Dade County, Florida)
Lua Curtiss House II (Miami-Dade County, Florida)
Lucas Beecher House (Erie County, Ohio)
Lucas Broadhead House (Woodford County, Kentucky)
Lucas Homestead (Chelan County, Washington)
Lucas Kuehn House (Wabasha County, Minnesota)
Lucas Mansion (Alexander County, North Carolina)
Lucas Troendle House (Blue Earth County, Minnesota)
Lucas-Johnston House (Newport County, Rhode Island)
Luce-Dyer House (Pike County, Missouri)
Lucein Boneparte Covell House (McHenry County, Illinois)
Lucerne (Fayette County, Tennessee)