December 2017
The ENR Northwest 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:
View Complete List of Main Rankings
Related Article:
Design, Specialty Firms Adapt as Activity Surges
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | DAVID EVANS ENTERPRISES INC. | 71.70 |
| 2 | HDR | 38.48 |
| 3 | ZGF ARCHITECTS LLP | 31.83 |
| 4 | STANTEC | 22.09 |
| 5 | OTAK INC. | 20.93 |
| 6 | AECOM | 16.30 |
| 7 | DLR GROUP | 11.67 |
| 8 | INTERFACE ENGINEERING | 11.66 |
| 9 | MEAD & HUNT INC. | 8.97 |
| 10 | PARAMETRIX | 8.43 |
| 11 | HACKER | 8.36 |
| 12 | KENNEDY/JENKS CONSULTANTS INC. | 8.23 |
| 13 | CARDNO | 7.17 |
| 14 | CAROLLO ENGINEERS INC. | 6.00 |
| 15 | ATKINS NORTH AMERICA | 5.58 |
| 16 | HARRIS GROUP INC. | 5.20 |
| 17 | WSP | 4.64 |
| 18 | AFFILIATED ENGINEERS INC. | 3.62 |
| 19 | MAZZETTI INC. | 2.81 |
| 20 | TERRACON CONSULTANTS INC. | 2.74 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | AECOM | 37.98 |
| 2 | STANTEC | 25.75 |
| 3 | HDR | 23.33 |
| 4 | MICHAEL BAKER INTERNATIONAL | 14.96 |
| 5 | ARCADIS NORTH AMERICA | 2.96 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | ZGF ARCHITECTS LLP | 58.87 |
| 2 | PERKINS+WILL | 56.54 |
| 3 | STANTEC | 39.90 |
| 4 | NAC ARCHITECTURE | 37.92 |
| 5 | DLR GROUP | 28.87 |
| 6 | COUGHLIN PORTER LUNDEEN INC. | 22.10 |
| 7 | TERRACON CONSULTANTS INC. | 17.10 |
| 8 | AFFILIATED ENGINEERS INC. | 16.79 |
| 9 | PCS STRUCTURAL SOLUTIONS | 16.15 |
| 10 | INTERFACE ENGINEERING | 14.14 |
| 11 | OTAK INC. | 14.13 |
| 12 | MG2 | 10.55 |
| 13 | HACKER | 10.08 |
| 14 | AECOM | 8.29 |
| 15 | PARAMETRIX | 7.72 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | ATKINS NORTH AMERICA | 32.68 |
| 2 | HDR | 26.51 |
| 3 | STANTEC | 14.98 |
| 4 | CARDNO | 2.13 |
| 5 | AECOM | 2.08 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | HDR | 115.84 |
| 2 | AECOM | 67.74 |
| 3 | STANTEC | 59.12 |
| 4 | HNTB CORP. | 58.76 |
| 5 | PERKINS+WILL | 56.70 |
| 6 | PARAMETRIX | 45.84 |
| 7 | WSP | 41.13 |
| 8 | DAVID EVANS ENTERPRISES INC. | 39.70 |
| 9 | NAC ARCHITECTURE | 37.38 |
| 10 | ATKINS NORTH AMERICA | 34.38 |
| 11 | ZGF ARCHITECTS LLP | 31.14 |
| 12 | TERRACON CONSULTANTS INC. | 23.27 |
| 13 | MOTT MACDONALD | 22.70 |
| 14 | COUGHLIN PORTER LUNDEEN INC. | 22.00 |
| 15 | BRPH | 19.46 |
| 16 | DLR GROUP | 17.20 |
| 17 | OTAK INC. | 17.11 |
| 18 | PCS STRUCTURAL SOLUTIONS | 16.15 |
| 19 | CARDNO | 13.90 |
| 20 | AFFILIATED ENGINEERS INC. | 13.77 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | HDR | 92.07 |
| 2 | HNTB CORP. | 59.27 |
| 3 | DAVID EVANS ENTERPRISES INC. | 45.30 |
| 4 | WSP | 39.74 |
| 5 | AECOM | 27.84 |
| 6 | PARAMETRIX | 24.73 |
| 7 | MOTT MACDONALD | 24.57 |
| 8 | STANTEC | 10.34 |
| 9 | OTAK INC. | 9.89 |
| 10 | MEAD & HUNT INC. | 6.56 |
| 11 | HW LOCHNER INC. | 6.00 |
| 12 | KENNEDY/JENKS CONSULTANTS INC. | 5.96 |
| 13 | ZGF ARCHITECTS LLP | 5.26 |
| 14 | ARUP | 5.04 |
| 15 | COWI NORTH AMERICA INC. | 4.25 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | HDR | 27.00 |
| 2 | STANTEC | 17.35 |
| 3 | PARAMETRIX | 10.80 |
| 4 | CAROLLO ENGINEERS INC. | 9.06 |
| 5 | KENNEDY/JENKS CONSULTANTS INC. | 7.85 |
| RANK | FIRM | $ MIL. |
|---|---|---|
| 1 | AECOM | 68.44 |
| 2 | ARCADIS NORTH AMERICA | 10.34 |
| 3 | TERRACON CONSULTANTS INC. | 3.58 |
| 4 | MICHAEL BAKER INTERNATIONAL | 3.07 |
| 5 | HDR | 2.49 |
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