| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | U. S. Heritage Group, Inc. | Consultancy | 1 |
| 2 | UCD-Reprographics | Consultancy | 1 |
| 3 | UI Printing Department | Consultancy | 0 |
| 4 | Uni-Systems, LLC | Consultancy | 6 |
| 5 | Unico AS | Consultancy | 1 |
| 6 | UNIES Ltd. Consulting Engineers | Consultancy | 0 |
| 7 | UnionConsult Boro VVS og miljø | Consultancy | 1 |
| 8 | Unipor-Ziegel Marketing GmbH | Consultancy | 0 |
| 9 | Unisource Systems | Consultancy | 0 |
| 10 | United American Realty | Consultancy | 1 |
| 11 | United Reprographics LLC | Consultancy | 0 |
| 12 | Universal Engineering Sciences | Consultancy | 8 |
| 13 | Universal Engineering Sciences | Consultancy | 3 |
| 14 | Universal Engineering Sciences Inc. | Consultancy | 3 |
| 15 | Universal Reprographics | Consultancy | 1 |
| 16 | Universal Reprographics | Consultancy | 1 |
| 17 | Universal Reprographics Inc. | Consultancy | 4 |
| 18 | University of Massachusetts Lowell Facilities | Consultancy | 0 |
| 19 | Unlimited Systems Support Inc. | Consultancy | 0 |
| 20 | Unroe Engineering | Consultancy | 4 |