| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | van Zelm Heywood & Shadford, Inc. | MEP engineering | 1 |
| 2 | Vanderweil Engineers | MEP engineering | 2 |
| 3 | Vanderweil Engineers | MEP engineering | 22 |
| 4 | Vanderweil Engineers | MEP engineering | 6 |
| 5 | Vector Design Ltd. | MEP engineering | 1 |
| 6 | Verde Engineering | MEP engineering | 3 |
| 7 | Vermilya-Brown Company | MEP engineering | 1 |
| 8 | Vienna ÖKO-Systems | MEP engineering | 2 |
| 9 | Vinokur-Pace Engineering Services | MEP engineering | 1 |
| 10 | VP Engineering | MEP engineering | 2 |