- Architects Collaborative1
- Architects Design Group8
- Architects and Engineers Affiliates1
- Ardale Building Corp.1
- Ardlan Construction Co., Inc.1
- Arende Building Corp.1
- Argent Construction Corp.1
- Argot Construction Corp.1
- Arista Realty Corp.1
- Arlen, Samuel S.1
- Arlington Terrace, Inc.3
- Armory Estates, Ltd.5
- Armstrong, Lorenzo D.1
- Arnley Construction Co., Inc.1
- Arno Realty Corp.1
- Arnold M. Goldman Co.1
- Arnold M. Goldman and Co., Inc.23
- Arrowbrook Garden Corp.3
- Arsmith Realty Co., Inc.1
- Artcourt Realty Co.1
- Arthold Realty Co.1
- Arthur Eckstein, Inc.1
- Arthur Hardgrove Co.15
- Artpaul Realty Co., Ltd.10
- Artsis, Jerome M.3
- Arwin Construction Corp.1
- Asch, Stephen1
- Ascot Estates, Inc.1
- Asher Dann and Sons5
- Asher Dann and Sons, Inc.4
- Ashley Apartments, Inc.4
- Ashwood Realty Corp.1
- Associate Architects1
- Astor, Vincent10
- Astoria Associates, Inc.1
- Atholl Corp.1
- Atlantic Towers, Inc.3
- Atlas Terminals, Inc.1
- Atlas and Son1
- Atlas, Sol G.13
- Austin Building Corp.1
- Austin Gardens Realty Corp.1
- Austin Management Corp.1
- Avalon Terrace, Inc.1
- Avecrest Realty Co., Inc.1
- Avenue A Apartments Inc.1
- Avenue Associates7
- Avlon, John4
- Axelrod-Walker Corp.3
- B and F Realty Corp.1
- B. and I. Realty Corp.1
- B.G.R. Realty Corp.1
- B.H.M. Realty Corp.1
- Babor-Comeau and Co., Inc.2
- Bailey, Lionel M.1
- Bainbridge Towers, Inc.1
- Bainweeks Realty Corp.1
- Baker-Lewine Construction Co., Inc.2
- Baldwin Gardens, Inc.2
- Balter and Greenberg1