| Business | Phone |
| Akb Engineers 600 University St 1122, Seattle 98101 | (206) 381-9900 |
| Alex N Kollias & Assoc 210 Boston St, Seattle 98109 | (206) 284-0141 |
| Andersen Bjornstad Kane Jacobs 800 5th Ave 3800, Seattle 98104 | (206) 340-2255 |
| C T Engineering 180 Nickerson St 302, Seattle 98109 | (206) 285-4512 |
| Carla Keel Group 1411 4th Ave # 1015, Seattle 98101 | (206) 628-9583 |
| Jack Christiansen Pe 2125 1st Ave # 702, Seattle 98121 | (206) 448-1849 |
| Coughlin Porter Lundeen 413 Pine St 300, Seattle 98101 | (206) 343-0460 |
| Degenkolb Engineers 720 3rd Ave 1420, Seattle 98104 | (206) 262-9240 |
| Engineers Northwest Inc 6869 Woodlawn Ave Ne 205, Seattle 98115 | (206) 525-7560 |
| Eqe Intl 1411 4th Ave # 500, Seattle 98101 | (206) 623-7232 |
| Exeltech Consulting Inc 615 2nd Ave 660, Seattle 98104 | (206) 623-9646 |
| Bright Engineering Inc 1809 7th Ave 1100, Seattle 98101 | (206) 625-3777 |
| Harriott Engineers Inc 2505 3rd Ave, Seattle 98121 | (206) 624-4760 |
| Ghl Consultants 810 3rd Ave 624, Seattle 98104 | (206) 682-2138 |
| I L Gross Structural Engineers 207 1st Ave S 250, Seattle 98104 | (206) 623-0769 |