- Sikras Realty Corp.2
- Silver Management Co.1
- Silverman-Freda Construction Corp.5
- Simon Bros.2
- Sixth Avenue Minetta Corp.1
- Slawson and Hobbes5
- Smith, Barry S.1
- Smith, Malcom E.2
- Sol G. Atlas Realty Enterprises4
- Solomon & Kahn2
- Sommer, Sigmund5
- Soundview Realty1
- Spear and Co. Real Estate4
- Sperry Estates1
- Stafford Brothers, Inc.2
- Starlyn Realty Corp.1
- State Funding Corp.1
- Steinberg and Pokoik2
- Stem Realty Corp.1
- Sterling Equities, Inc.5
- Stewart Hall, Inc.2
- Stimson Building Corp.1
- Studley, Sylvan J.1
- Sulzberger-Lese Corp.1
- Sulzberger-Rolfe, Inc.26
- Summers and Meehan1
- Sussman, William S.1
- Sutton and Towne Residential, Inc.14
- Sutton and Towne, Inc.12
- Sutton, Blagden and Lynch, Inc.4
- Suydam-Weld and Butt2
- Sylvan Lawrence Co.2
- Syndicate Builders, Inc.2
- Talbot J. Taylor, Jr., Inc.6
- Talman, Bigelow, Inc.1
- Talman, Bigelow, Whittemore, Ltd.5
- Tandy and Allen2
- Tankoos and Co.2
- Tapman, Walter P.1
- Taylor Estates, Inc.2
- Taylor Properties, Inc.1
- Tenney-Broff20
- Third Avenue-65th Street Corp.1
- Thomas O'Reilly and Son, Inc.1
- Thompson Starrett Co. Building Corp.7
- Thompson, Ross W.1
- Three Twenty Inc.1
- Thurcon Properties Ltd.1
- Timston Corp.2
- Tishman Realty and Construction Co., Inc.50
- Tohn, Gerald E.1
- Tompkins Square Citizens' Housing Advisory Council1
- Tompkins Square PEP, Inc.1
- Trade Fifth Realty Corp.1
- Trafalgar Construction Corp.1
- Trans World Equities Co.2
- Trans-Boro Management Corp.8
- Trans-Boro Realty Corp.2
- Triangle Apartments, Inc.4
- Trump, Donald1