- Harway Terrace, Inc.2
- Henry Norman Associates Builders2
- Henry Phipps Estates2
- Hillside Holding Corp.2
- Hirsch, Alexander2
- Huberth and Huberth, Inc.2
- Hudon Towers Corp.2
- I.G. Wolf-R.A. White, Inc.2
- Imarata, Lawrence2
- Imperial Realty Corp.2
- Industrial Real Estate Development2
- Isidore Rosen and Sons, Inc.2
- J. Rodman Realty Co.2
- J.C. Building Corp.2
- J.D. Robilotto Co., Inc.2
- J.F. Cahill and Co., Inc.2
- J.G. MacInnis Co.2
- J.P. Lieberman and Son, Inc.2
- Jacfred Apartments, Inc.2
- James Stewart and Co., Inc.2
- Jerry Spiegel Associates2
- Jewel Estates, Inc.2
- Joedbur Realty Corp.2
- John E. Warner and Sons, Inc.2
- John J. Reynolds Management Co., Inc.2
- John L. Hennessy Co.2
- Joint Board, Fur, Leather, and Machine Workers' Unions2
- Jonas Construction Co., Inc.2
- Jonas Equities, Inc.2
- Kalikow Properties, Inc.2
- Kehaya Realty Corp.2
- Kellner, Murray2
- Kenmore Realty Co., Inc.2
- Kenneth McCrary Associates, Inc.2
- Kershaw and Seeman Associates2
- Kew Gardens Hills Housing Associates, Inc.2
- Kingston Development Corp.2
- Kinser Realty Corp.2
- Klein, Murray2
- Kraushar, Henry L.2
- Landau, Samuel J.2
- Landau-Banker Realty Corp.2
- Laneri Brothers2
- Lansco Corp.2
- Layjay Estates, Inc.2
- Lenox Centre Co.2
- Lenris Realty Corp.2
- Leona, Inc.2
- Lewis, Alfred2
- Lexanne Realty Corp.2
- Lexington House, Inc.2
- Lind-Ric Housing Co., Inc.2
- Lipman Associates Inc.2
- Lofts for Living Ltd.2
- London Management Corp.2
- Lyras, Steven C.2
- Lyras-Adams Limited2
- M. Bogdanoff and Son2
- Macaluso, Joseph J.2
- Macklowe, Harry2