| # | Company name | Role | # of projects |
|---|---|---|---|
| 21 | Yu Engineering | Structural engineering | 1 |
| 22 | Yu Engineers PLLC | Structural engineering | 1 |
| 23 | Yuji Kasamoto, Inc. | Structural engineering | 3 |
| 24 | Yüksek Proje | Structural engineering | 4 |
| 25 | Yuzon & Associates | Structural engineering | 1 |