- Kellner, Leon A.1
- Kellner, Leonard1
- Kellner, Louis1
- Kellner, Murray2
- Kellner, Sam J.3
- Kelmar Holding Corp.9
- Kendale Building Corp.1
- Kenin and Posner, Inc.1
- Kenmore Building Co., Inc.1
- Kenmore Realty Co., Inc.2
- Kenner Construction Corp.1
- Kenneth McCrary Associates, Inc.2
- Kensington Estates Inc.1
- Kensington Hall, Inc.1
- Kensinton Arms, Inc.1
- Kent Victoria, Inc.1
- Kent, David1
- Keoppel and Keoppel8
- Kern Realty Co.4
- Kershaw and Seeman Associates2
- Kershaw-Seeman-Grundfest Associates1
- Kessler Wohl Associates7
- Kessler-Hess1
- Kew Drive Corp.1
- Kew Forest Apartments, Inc.1
- Kew Forest Realty Corp.1
- Kew Garden Hills Development Corp.1
- Kew Gardens Apartments Number 1, Inc.1
- Kew Gardens Apartments Number 10, Inc.1
- Kew Gardens Apartments Number 11, Inc.1
- Kew Gardens Apartments Number 2, Inc.1
- Kew Gardens Apartments Number 9, Inc.1
- Kew Gardens Developemet Corp.1
- Kew Gardens Hills Housing Associates, Inc.2
- Kew Leasing Corp.6
- Kew Queen Corp.1
- Kibel Co.6
- Kimmel Brothers Realty and Construction Co.3
- Kingcrest Construction Corp.1
- Kings Apartment, Inc.1
- Kings College Gardens, Inc.1
- Kingsdale Building Corp.1
- Kingsland Builders, Inc.1
- Kingsland Construction Corp.1
- Kingston Development Corp.2
- Kingsway Developments, Inc.1
- Kingsway Terrace Corp.1
- Kinser Realty Corp.2
- Kinsor Management Co.1
- Kisan Realty Corp.1
- Kishner, M.1
- Kissena-Elder Associates1
- Kleban and Leader3
- Kleiman Realty Associates1
- Klein, Frederick8
- Klein, Murray2
- Knight Realty1
- Knightsbridge Development Corp.1
- Kogan and Ross1
- Kolow Construction Corp.1