| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | P K F Consulting | Consultancy | 0 |
| 2 | P M Group | Consultancy | 0 |
| 3 | P S I | Consultancy | 1 |
| 4 | P. Wolfe Consultants, Inc. | Consultancy | 11 |
| 5 | Pace Mechanical Services Inc. | Consultancy | 0 |
| 6 | Pacer Consultants | Consultancy | 1 |
| 7 | PACIFIC CONSULTANTS CO.,LTD. | Consultancy | 1 |
| 8 | Pacific Planning Group | Consultancy | 1 |
| 9 | Paducah Blueprint | Consultancy | 1 |
| 10 | Page Kirkland Group (HCMC) | Consultancy | 1 |
| 11 | Palm Beach Commerce Center Associates Limited. | Consultancy | 2 |
| 12 | Palomar Reprographics | Consultancy | 1 |
| 13 | Pan American Engrs | Consultancy | 0 |
| 14 | Panamerican Consultants Inc | Consultancy | 1 |
| 15 | PANDY Environmental LLC | Consultancy | 1 |
| 16 | Panter Inc. | Consultancy | 0 |
| 17 | PAR Arquitetura S/C/ Ltda- Consultoria em Projetos | Consultancy | 2 |
| 18 | Paragon General Contractors Inc. | Consultancy | 3 |
| 19 | Parallel Solutions | Consultancy | 1 |
| 20 | Parametrix | Consultancy | 1 |