| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | 2ten Architects, Inc. | architect | 3 |
| 2 | 3cee Construction | general contractor | 1 |
| 3 | 3D/International | architect | 10 |
| 4 | 3 Ti Inc | general contractor | 1 |
| 5 | 9500 Management Ltd | client | 0 |
| 6 | AA Gonzalez Consulting Engineer | engineering company | 3 |
| 7 | Aaron Rentals Inc | client | 1 |
| 8 | Abaco Consultants | mechanical engineering | 2 |
| 9 | ABG Development Ltd. | developer | 1 |
| 10 | Accord General Contracting | general contractor | 2 |
| 11 | Accutech Consultants | structural engineering | 3 |
| 12 | Ace Quality Construction | general contractor | 1 |
| 13 | Adams & Adams | architect | 8 |
| 14 | Adolph J Reeh | client | 1 |
| 15 | Advanced Fire Protection | fire protection engineering | 0 |
| 16 | AEG Building Services Inc. | electrical contractor | 4 |
| 17 | A. Epstein and Sons International, Inc. | architect | 0 |
| 18 | Aesthetic Enhancement | client | 0 |
| 19 | Affirmed General Contracting Inc. | general contractor | 9 |
| 20 | Agra Earth & Environmental | consultant | 1 |