Commercial building

Keystone Building (Dauphin County, Pennsylvania)
Keystone Building (Kane County, Illinois)
Keystone Trading Company Store (Pennington County, South Dakota)
Kilbourne Commercial Building (Franklin County, Ohio)
Kimball's Store (Anchorage, Alaska)
Kincaid and Arnett Feed and Flour Building (Monongalia County, West Virginia)
Kindel Building (Los Angeles County, California)
King Records plant (Hamilton County, Ohio)
King Records was a pioneer rock & roll record company and an early home of James Brown
King Store and Homestead (Morris County, New Jersey)
King's Chef Diner (El Paso County, Colorado)
King, L. B. and Co. Building (Wayne County, Michigan)
King-Whatley Building (Lafayette County, Arkansas)
Kingman-Moore Building (Oklahoma County, Oklahoma)
Kings County Savings Bank (Kings County, New York)
Kirch/Latch Building (Winona County, Minnesota)
Kirk Johnson Building (Lancaster County, Pennsylvania)
Kirkpatrick Dental Office (Madison County, Mississippi)
Kirkwood Building (Jackson County, Missouri)
Kirschbraun and Sons Creamery, Inc. (Douglas County, Nebraska)
Kishman Fish Company Buildings (Erie County, Ohio)
Kissock Block Building (Larimer County, Colorado)
Kistler Stationery Company Building (Denver County, Colorado)
Kittredge Building (Denver County, Colorado)
Kixmiller's Store (Knox County, Indiana)
Klee Funeral Parlor (Henderson County, Kentucky)
Kliegle Garage (Deuel County, South Dakota)
Kline's Department Store (Eau Claire County, Wisconsin)
Klostermann Block (Cape Girardeau County, Missouri)
Knickerbocker Press Building (Westchester County, New York)
Knight Block (Utah County, Utah)
Knights of Columbus-Indiana Club (St. Joseph County, Indiana)
Knights of Pythias Building (Maricopa County, Arizona)
Knights of Pythias Lodge (St. Joseph County, Indiana)
Kniseley & Long Building (McIntosh County, Oklahoma)
Knowles Grain Elevator (Beaver County, Oklahoma)
Knowlton, Jabez, Store (Penobscot County, Maine)
Knox Building (East Baton Rouge Parish, Louisiana)
Knox Building (New York County, New York)
Knudson Brothers Building (Box Elder County, Utah)
Koch Drug Store (Scott County, Iowa)
Kong Lung Store (Kauai County, Hawaii)
Koski Building (Coos County, Oregon)
Krause Music Store (Cook County, Illinois)
Krenz--Kerley Trading Post (Coconino County, Arizona)
Kresge Building (Kennebec County, Maine)
Kress 5 & 10 Building (Creek County, Oklahoma)
Kress Building (Harris County, Texas)
Kress Building (Boone County, Missouri)
Kress Building (Tarrant County, Texas)
Kress Building (Richland County, South Carolina)
Kress Building (Madison County, Alabama)
Art Deco Moderne Design 5 and 10 store, later an office, now housing bars
Kress Building (Lyon County, Kansas)
Kress Building (Mahoning County, Ohio)
Kress Building (Multnomah County, Oregon)
Kress Building (Garfield County, Oklahoma)
Kress Building (Okmulgee County, Oklahoma)
Kress Building (Washington County, Oklahoma)
Kroll Meat Market and Slaughterhouse (Lawrence County, South Dakota)
Kuebler-Artes Building (Vanderburgh County, Indiana)
Kuehn Blacksmith Shop-Hardware Store (Outagamie County, Wisconsin)
Retail commercial space in Kaukauna in search of a tenant
Kunkel Building (Dauphin County, Pennsylvania)
L. A. Larson & Co. Store (Door County, Wisconsin)
Former store now serving as a restaurant and bakery
L. B. Robb Drugstore (Hamilton County, Ohio)
L. Banks Holt House (Alamance County, North Carolina)
L. D. Giddens and Son Jewelry Store (Wayne County, North Carolina)
L. D. Miller Funeral Home (Minnehaha County, South Dakota)
L. Haas Store (White County, Illinois)
L.B. Bentley General Merchandise (Dona Ana County, New Mexico)
L.C. Adam Mercantile Building (Chautauqua County, Kansas)
L.P. Jenne Block (Orleans County, Vermont)
L.S. Ayres Annex Warehouse (Marion County, Indiana)
La Fave Block (Pitkin County, Colorado)
La Madrilena (Cameron County, Texas)
Labor Bank Building (Hudson County, New Jersey)
Laclede Building (St. Louis, Missouri)
Ladd Carriage House (Multnomah County, Oregon)
Ladora Savings Bank (Iowa County, Iowa)
Lady Washington Inn (Montgomery County, Pennsylvania)
Lafayette Hardware Store (Lafayette Parish, Louisiana)
Lafayette Lodge No. 79 (Muskingum County, Ohio)
Lafee Building (Montgomery County, Ohio)
Lagonda Club Building (Clark County, Ohio)
Lake Street Historic District (Genesee County, New York)
Lamar Building (Richmond County, Georgia)
Lamar-Blanchard House (Lincoln County, Georgia)
Lamb Building (Dane County, Wisconsin)
Lambertville House (Hunterdon County, New Jersey)
Lampert Lumber Company Line Yard (Brown County, Minnesota)
Lancaster Block (Cumberland County, Maine)
Lancaster Trust Company (Lancaster County, Pennsylvania)
Land and Loan Office Building (Kossuth County, Iowa)
Land Bank Building (Jackson County, Missouri)
Land Title Building (Philadelphia County, Pennsylvania)
Landmark Tavern (Stark County, Ohio)
Landrum's Hamburger System No. 1 (Washoe County, Nevada)
Lane Cabin (Beaver County, Oklahoma)
Langdon Filling Station (Garland County, Arkansas)
Lappin-Hayes Block (Rock County, Wisconsin)
Larrabee's Brick Block (Middlesex County, Massachusetts)
LaSalle Building (St. Louis, Missouri)
Last Chance Store (Morris County, Kansas)
Latta Arcade (Mecklenburg County, North Carolina)
Lattner Auditorium Building (Linn County, Iowa)
Lauerman Brothers Department Store (Marinette County, Wisconsin)
Launching Pad Drive-In (Will County, Illinois)
Laundry Building (Pinal County, Arizona)
Law Office (Beckham County, Oklahoma)
Lawler Motor Company Building (Buchanan County, Missouri)
Lawrence County Bank Building (Lawrence County, Missouri)
Lawrence Warehouse (Sacramento County, California)
Lawyers Building (Wayne County, Michigan)
Layton Building (Marion County, Arkansas)
Leader Building (Jefferson County, Washington)
Leake-Ingham Building (Ouachita County, Arkansas)
Learner Building (Howard County, Indiana)
Ledger-Enquirer Building (Muscogee County, Georgia)
Lee's Tavern (Woodford County, Kentucky)
Lee, Higginson & Company Bank Building (New York County, New York)
Leeman Auto Company Building (Denver County, Colorado)
Leisy Brewing Company (Cuyahoga County, Ohio)
Leiter II Building (Cook County, Illinois)
LeJeune's Bakery (Iberia Parish, Louisiana)
Lemann Store (Ascension Parish, Louisiana)
Lemmon Hardware Store (Lincoln County, Idaho)
Lemuel Milk Carriage House (Kankakee County, Illinois)
Lenoir Cotton Mill Warehouse (Loudon County, Tennessee)
Lenoir Store (Sumter County, South Carolina)
Lenox Drive-In (Garfield County, Oklahoma)
Lentz-Carter Merchandise Store (Newton County, Missouri)
Leon's Frozen Custard (Milwaukee County, Wisconsin)
Lerch Tavern (Berks County, Pennsylvania)
Lerner Building (Cuyahoga County, Ohio)
Lesan--Gould Building (St. Louis, Missouri)
Lesinger Block (Linn County, Iowa)
Lettunich Building (Santa Cruz County, California)
Lever Building (Richland County, South Carolina)
Lever House (New York County, New York)
Levi Wilson Tavern (Washington County, Pennsylvania)
Levy Brothers Building (Jefferson County, Kentucky)
Lewis Brothers Building (Washington County, Arkansas)
Lewis G. Kline Building (Benton County, Oregon)
Lewis Weldin House (New Castle County, Delaware)
Lewis--Rothchild Building (Muscogee County, Georgia)
Lewiston Trust and Safe Deposit Company (Androscoggin County, Maine)
Lewistown Merchantile Company (Fergus County, Montana)
Lexington City National Bank Building (Fayette County, Kentucky)
Lexington Dry Goods Company Building (Fayette County, Kentucky)
Lexington Hotel (McKinley County, New Mexico)
Libby's Colonial Tea Room (York County, Maine)
Libby--Hill Block (Kennebec County, Maine)
Liberty Building (Jackson County, Oregon)
Liberty Tower (New York County, New York)
Liberty Warehouse Nos. 1 and 2 (Durham County, North Carolina)
Lightning Delivery Co. Warehouse (Maricopa County, Arizona)
Lincoln Building (New York County, New York)
Lincoln Building (Pulaski County, Arkansas)
Lincoln Building (Champaign County, Illinois)
Lincoln House (Aurora County, South Dakota)
Lincoln Liberty Life Insurance Building (Lancaster County, Nebraska)
Lincoln National Bank (Lincoln County, West Virginia)
Lincoln National Bank (Greene County, Pennsylvania)
Lincoln Trust Building (St. Louis, Missouri)
Lind Arcade (Muskingum County, Ohio)
Lindauer and Rupert Block (Outagamie County, Wisconsin)
Downtown Kaukauna Retail Commercial Building
Linden Grove Pavilion (Lehigh County, Pennsylvania)
Lindner Building (Cuyahoga County, Ohio)
Lindsey Building (Montgomery County, Ohio)
Lindsley House (Pawnee County, Nebraska)
Lindy's Coffee Shop (Bernalillo County, New Mexico)
Lipman--Wolfe and Company Building (Multnomah County, Oregon)
Lister Building (St. Louis, Missouri)
Litening Gas (Gallatin County, Montana)
Lits Department Store (Philadelphia County, Pennsylvania)
Little Chef Diner (Danville, Virginia)
Little Chef's Diner (Floyd County, Indiana)
Little Church of the West (Clark County, Nevada)
Little Kanawha Valley Bank (Gilmer County, West Virginia)
Little Missouri Bank Building (Harding County, South Dakota)
Little Rock Boys Club (Pulaski County, Arkansas)
Livery Stable (Washington County, Oklahoma)
Livestock Exchange Building (Buchanan County, Missouri)
Livestock Exchange Building (Douglas County, Nebraska)
Lloyd's Diner (Middlesex County, Massachusetts)
A nicely restored little diner
Loa Tithing Office (Wayne County, Utah)
Locke Block (Ramsey County, North Dakota)
Locke, Lt. Benjamin, Store (Middlesex County, Massachusetts)
Locke--Ober Restaurant (Suffolk County, Massachusetts)