The ENR West Top Design Firms list, ranks the largest U.S.-based designs firms, both publicly and privately held, based on design-specific revenue.

More detailed information on the Top Design Firms:
Top Design Firms Rankings by Sectors
Related Article:
West Coast Design Firms Regain Their Momentum
Click below for earlier editions:
2025 |
Click here for archived ENR California & Northwest top lists.
| Rank 2026 |
Company Location/Website Top Officer |
Lic. Arch. Engr. Leed AP |
Largest Project to Break Ground Location Project Value ($ Mil.) |
Market Sectors By % of Revenue** | Regional Rev. 2025 ($ Mil) |
|---|---|---|---|---|---|
| 1/1 | AECOM* Los Angeles | aecom.com Matthew Crane, Executive Vice President, Regional Chief Executive, West |
66 696 102 |
WDOT Portage Bay Bridge Seattle 1,400.00 |
40 Transportation 19 Water Supply 18 Hazardous Waste |
1,076.66 |
| 2/2 | WSP USA Seattle | wsp.com Karen Doherty, Mountain Pacific Region Executive |
13 511 1051 |
SR 167/SR 161 to SR 410 – Rebuild Interchange Project Puyallup, Wash. 177.78 |
46 Transportation 17 General Building 14 Power |
924.57 |
| 3/3 | HDR Irvine, Calif. | hdrinc.com Kip Field, Southwest Regional Director of Operations |
— — — |
Not Provided | 47 Transportation 14 Water Supply 12 Sewerage/Solid Waste |
887.73 |
| 4/4 | Stantec Sacramento | stantec.com Sarah McIlroy, Vice President, Regional Leader, US West |
119 452 31 |
South Bay International Wastewater Treatment Plant Rehabilitation and Expansion San Diego 600.00 |
29 General Building 28 Water Supply 15 Power |
818.15 |
| 5/5 | HNTB Corp. Los Angeles | hntb.com Michelle Dippel, Executive Vice President, Western U.S. President |
15 188 1 |
Not Provided | 98 Transportation 2 General Building |
438.62 |
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