- Kraham Realty Co., Inc.72
- Kramer, Louis1
- Kraslow, George1
- Kratter Corp.1
- Kraus, David1
- Kraus, Fred M.1
- Kraushar, Henry L.2
- Kreines, Irwin M.1
- Kreisel Co.1
- Kreisler-Borg Construction Co., Inc.1
- Krumholz, Philip1
- L and E Construction Corp.1
- L and K Apartments, Inc.1
- L and R Development Corp.1
- L-V Realty Corp.1
- L. and M. Operating Co., Inc.1
- L.J. Phillips and Co.5
- L.J. Phillips-Wood, Dolson Co., Inc.45
- L.J.L. Building Corp.1
- L.V. Hoffman and Co.4
- La Vinci Apartments Co.1
- LaVecchia, A.1
- Ladley Realty Corp.1
- Lafayette Gardens Terrace, Inc.1
- Laiffer, Peggy1
- Lake Park Land and Homes1
- Lancaster House1
- Land Developers, Inc.1
- Land Properties Inc.1
- Land Realty1
- Landau, Samuel J.2
- Landau-Banker Realty Corp.2
- Landmark Team10
- Landon Holding Corp.1
- Lane Gardens Inc.1
- Lane Hall, Inc.1
- Lane Realty Co.13
- Laneri Brothers2
- Laneri Development1
- Lang Development Corp.1
- Lansco Corp.2
- Lanson Gardens, Inc.1
- Larco Building Corp.1
- Lark Equities1
- Lasette, Frank B.3
- Laural Management Co.1
- Lautob Realty1
- Lawn Place Realty Corp.1
- Lawrence M. Rosenthal Associates1
- Lawrence Management, Inc.1
- Layjay Estates, Inc.2
- Lazarus, Frank L.3
- Le Havre1
- Leacrest Corp.1
- Lebar Realty Corp.1
- Lebern Builders, Inc.1
- Leeward House, Inc.1
- Lefrack Organization1
- Lefrak Organization121
- Lefrak, Harry14