| Business | Phone |
| Aei/Alpha Engineering Inc Vancouver 98661 | (360) 695-8794 |
| Barbieri & Assoc 7017 Ne Highway 99 204, Vancouver 98665 | (360) 695-1001 |
| Dj & A Pc 404 E 15th St 5, Vancouver 98663 | (360) 690-4400 |
| Harb Engineering 900 Washington St 825, Vancouver 98660 | (360) 695-6520 |
| Harker Engineering 1403 Washington St, Vancouver 98660 | (360) 699-2206 |
| Harper Houf Righellis Inc 1104 Main St 100, Vancouver 98660 | (360) 750-1131 |
| Hopper Dennis Jellison 314 W 15th St, Vancouver 98660 | (360) 695-3488 |
| Ldc Design Group Inc 8513 Ne Hazel Dell Ave 202, Vancouver 98665 | (360) 573-0370 |
| Sisul Engineering 1924 Broadway St A, Vancouver 98663 | (360) 696-3664 |
| Stirling Design 2208 E Evergreen Blvd, Vancouver 98661 | (360) 759-1794 |
| Sturtevant Golemo & Assoc 2005 Broadway St, Vancouver 98663 | (360) 993-0911 |
| Wallis Engineering 317 Columbia St, Vancouver 98660 | (360) 695-7041 |
| Olson Engineering Inc 1111 Broadway St, Vancouver 98660 | (360) 695-1385 |
| Otak Inc 700 Washington St 401, Vancouver 98660 | (360) 737-9613 |
| Pbs Environmental 1310 Main St, Vancouver 98660 | (360) 690-4331 |
| Mac Kay & Sposito 1325 Se Tech Center Dr 140, Vancouver 98683 | (360) 695-3411 |
| Mgh Assoc 104 W 9th St 207, Vancouver 98660 | (360) 750-0399 |
| Moss & Assoc 717 Ne 61st St 202, Vancouver 98665 | (360) 260-9400 |