| AECOM (Architecture) | Firms (Office Location) |
| Callison | Firms (Headquarters) |
| Century Link Field | Football Stadiums |
| Columbia Center | Tallest Buildings |
| CTA Architects Engineers | Firms (Office Location) |
| DLR Group | Firms (Office Location) |
| Frye Art Museum | Art Museums |
| Gensler | Firms (Office Location) |
| GGLO | Firms (Headquarters) |
| HDR Architecture | Firms (Office Location) |
| HOK | Firms (Office Location) |
| KMD Architects | Firms (Office Location) |
| Mahlum | Firms (Headquarters) |
| Miller Hull Partnership | Firms (Headquarters) |
| Mithun | Firms (Headquarters) |
| NAC|Architecture | Firms (Office Location) |
| NBBJ | Firms (Headquarters) |
| Perkins + Will | Firms (Office Location) |
| Portico Group, The | Firms (Headquarters) |
| Safeco Field | Baseball Stadiums |
| Seattle Aquarium | Aquariums |
| Seattle Art Museum | Art Museums |
| Seattle-Tacoma International Airport (SEA), Central Terminal | Airports |
| Seattle-Tacoma International Airport (SEA), Concourse A | Airports |
| SSOE Group | Firms (Office Location) |
| Washington State Convention and Trade Center | Convention Centers |
| Wimberly Allison Tong & Goo (WATG) | Firms (Office Location) |
| ZGF Architects | Firms (Office Location) |
