| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | K & M Engineering And Consulting Corporation | Consultancy | 0 |
| 2 | K & M Reproductions | Consultancy | 6 |
| 3 | K.F.W. Askøes Eftf. | Consultancy | 2 |
| 4 | Kaare Skallerud AS | Consultancy | 1 |
| 5 | Kalm Befestigungssysteme GmbH | Consultancy | 0 |
| 6 | Kamper Brands | Consultancy | 6 |
| 7 | Kampsax A/S | Consultancy | 1 |
| 8 | Kandiyohi Development Partners | Consultancy | 4 |
| 9 | Kann Finch Pty. Ltd. | Consultancy | 0 |
| 10 | Karen M Taylor Land Planner | Consultancy | 1 |
| 11 | Karen Nicholson Hackler Inc | Consultancy | 1 |
| 12 | Karuk Indian Housing Authority | Consultancy | 0 |
| 13 | Kath. Wohnungsbau und Siedlung der Diözese Regensburg GmbH | Consultancy | 0 |
| 14 | Katherine L Jensen Interior Design | Consultancy | 0 |
| 15 | Katz Okitsu & Associates | Consultancy | 1 |
| 16 | KBD Planning Group, Inc. | Consultancy | 0 |
| 17 | Kdg Development Consulting | Consultancy | 0 |
| 18 | Keene Copy Service | Consultancy | 0 |
| 19 | Kef / Lopezgarcia Group | Consultancy | 3 |
| 20 | Kehler Engineering Associates Inc | Consultancy | 0 |