2023 Power Book: Architecture, Engineering and Design Firms

1. David Evans Enterprises

OR and SW Wash. Licensed Professionals: 124
OR and SW Wash. employees: 503
Offices Worldwide: 30
Year established: 1976

2. ZGF Architects

OR and SW Wash. Licensed Professionals: 122
OR and SW Wash. employees: 256
Offices Worldwide: 6
Year established: 1942

3. AKS Engineering & Forestry

OR and SW Wash. Licensed Professionals: 115
OR and SW Wash. employees: 326
Offices Worldwide: 4
Year established: 1996

4. Otak

OR and SW Wash. Licensed Professionals: 110
OR and SW Wash. employees: 218
Offices Worldwide: 7
Year established: 1981

5. Shannon & Wilson

OR and SW Wash. Licensed Professionals: 106
OR and SW Wash. employees: 35
Offices Worldwide: 13
Year established: 1954

6. KPFF Consulting Engineers

OR and SW Wash. Licensed Professionals: 84
OR and SW Wash. employees: 195
Offices Worldwide: 20
Year established: 1960

7. Ankrom Molsan Architects

OR and SW Wash. Licensed Professionals: 68
OR and SW Wash. employees: 246
Offices Worldwide: 3
Year established: 1983

8. LRS Architects

OR and SW Wash. Licensed Professionals: 67
OR and SW Wash. employees: 135
Offices Worldwide: 2
Year established: 1976

9. Harper Houf Peterson Righellis

OR and SW Wash. Licensed Professionals: 60
OR and SW Wash. employees: 115
Offices Worldwide: 4
Year established: 1990

TIE 10. Mackenzie

OR and SW Wash. Licensed Professionals: 56
OR and SW Wash. employees: 179
Offices Worldwide: 3
Year established: 1960

TIE 10. SERA Architects

OR and SW Wash. Licensed Professionals: 56
OR and SW Wash. employees: 152
Offices Worldwide: 2
Year established: 1968

TIE 10. GBD Architects

OR and SW Wash. Licensed Professionals: 56
OR and SW Wash. employees: 88
Offices Worldwide: 1
Year established: 1969

13. Harris Group

OR and SW Wash. Licensed Professionals: 51
OR and SW Wash. employees: 103
Offices Worldwide: 7
Year established: 1975

14. Hennebery Eddy Architects

OR and SW Wash. Licensed Professionals: 49
OR and SW Wash. employees: 71
Offices Worldwide: 3
Year established: 1992

15. PAE

OR and SW Wash. Licensed Professionals: 48
OR and SW Wash. employees: 133
Offices Worldwide: 4
Year established: 1967

16. Parametrix

OR and SW Wash. Licensed Professionals: 45
OR and SW Wash. employees: 122
Offices Worldwide: 14
Year established: 1969

17. Stantec Consulting Services

OR and SW Wash. Licensed Professionals: 44
OR and SW Wash. employees: 104
Offices Worldwide: 339
Year established: 1954

TIE 18. WHPacific

OR and SW Wash. Licensed Professionals: 40
OR and SW Wash. employees: 58
Offices Worldwide: 10
Year established: 1981

TIE 18. Ziba Design

OR and SW Wash. Licensed Professionals: 40
OR and SW Wash. employees: 50
Offices Worldwide: 3
Year established: 1984

20. AECOM

OR and SW Wash. Licensed Professionals: 39
OR and SW Wash. employees: 100
Offices Worldwide: 343
Year established: 1990

TIE 21. PBS Engineering and Environmental

OR and SW Wash. Licensed Professionals: 38
OR and SW Wash. employees: 130
Offices Worldwide: 10
Year established: 1982

TIE 21. Mahlum

OR and SW Wash. Licensed Professionals: 38
OR and SW Wash. employees: 81
Offices Worldwide: 2
Year established: 1938

23. SRG Partnership

OR and SW Wash. Licensed Professionals: 33
OR and SW Wash. employees: 60
Offices Worldwide: 2
Year established: 1972

24. Maul Foster & Alongi

OR and SW Wash. Licensed Professionals: 32
OR and SW Wash. employees: 98
Offices Worldwide: 8
Year established: 1996

TIE 25. Kittelson & Associates

OR and SW Wash. Licensed Professionals: 31
OR and SW Wash. employees: 25
Offices Worldwide: 18
Year established: 1980

TIE 25. FFA Architecture and Interiors

OR and SW Wash. Licensed Professionals: 31
OR and SW Wash. employees: 18
Offices Worldwide: 1
Year established: 1956

TIE 27. IDC Architects

OR and SW Wash. Licensed Professionals: 30
OR and SW Wash. employees: 550
Offices Worldwide: 174
Year established: 1946

TIE 27. Opsis Architecture

OR and SW Wash. Licensed Professionals: 30
OR and SW Wash. employees: 50
Offices Worldwide: 1
Year established: 1999

29. Hacker

OR and SW Wash. Licensed Professionals: 28
OR and SW Wash. employees: 64
Offices Worldwide: 1
Year established: 1983

30. WSP | Parsons Brinckerhoff

OR and SW Wash. Licensed Professionals: 25
OR and SW Wash. employees: 53
Offices Worldwide: 500
Year established: 1885

31. Interface Engineering

OR and SW Wash. Licensed Professionals: 24
OR and SW Wash. employees: 121
Offices Worldwide: 7
Year established: 1969

TIE 32. Akana

OR and SW Wash. Licensed Professionals: 23
OR and SW Wash. employees: 45
Offices Worldwide: 104
Year established: 1990

TIE 32. PACE Engineers

OR and SW Wash. Licensed Professionals: 23
OR and SW Wash. employees: 30
Offices Worldwide: 4
Year established: 1992

TIE 34. Scott | Edwards Architecture

OR and SW Wash. Licensed Professionals: 22
OR and SW Wash. employees: 65
Offices Worldwide: 1
Year established: 1997

TIE 34. BLRB Architects

OR and SW Wash. Licensed Professionals: 22
OR and SW Wash. employees: 26
Offices Worldwide: 4
Year established: 1953

36. BergerABAM

OR and SW Wash. Licensed Professionals: 19
OR and SW Wash. employees: 51
Offices Worldwide: 7
Year established: 1951

TIE 37. Westlake Consultants

OR and SW Wash. Licensed Professionals: 17
OR and SW Wash. employees: 55
Offices Worldwide: 1
Year established: 1983

TIE 37. Dull Olson Weekes - IBI Group Architects

OR and SW Wash. Licensed Professionals: 17
OR and SW Wash. employees: 37
Offices Worldwide: 67
Year established: 1986

TIE 37. TVA Architects

OR and SW Wash. Licensed Professionals: 17
OR and SW Wash. employees: 33
Offices Worldwide: 1
Year established: 1984

TIE 37. PIVOT Architecture

OR and SW Wash. Licensed Professionals: 17
OR and SW Wash. employees: 30
Offices Worldwide: 1
Year established: 1956

TIE 37. R&W Engineering

OR and SW Wash. Licensed Professionals: 17
OR and SW Wash. employees: 22
Offices Worldwide: 1
Year established: 1978

TIE 42. Gensler

OR and SW Wash. Licensed Professionals: 15
OR and SW Wash. employees: 39
Offices Worldwide: 52
Year established: 2018

TIE 42. 3J Consulting

OR and SW Wash. Licensed Professionals: 15
OR and SW Wash. employees: 38
Offices Worldwide: 1
Year established: 2009

TIE 42. Soderstrom Architects

OR and SW Wash. Licensed Professionals: 14
OR and SW Wash. employees: 39
Offices Worldwide: 1
Year established: 1984

TIE 42. CIDA Architects & Engineers

OR and SW Wash. Licensed Professionals: 14
OR and SW Wash. employees: 37
Offices Worldwide: 1
Year established: 1991

TIE 42. Yost Grube Hall Architecture

OR and SW Wash. Licensed Professionals: 14
OR and SW Wash. employees: 25
Offices Worldwide: 1
Year established: 1964

TIE 42. Kramer Gehlen and Associates

OR and SW Wash. Licensed Professionals: 14
OR and SW Wash. employees: 19
Offices Worldwide: 1
Year established: 1969

48. Burns & McDonnell

OR and SW Wash. Licensed Professionals: 13
OR and SW Wash. employees: 41
Offices Worldwide: 55
Year established: 1898

49. Holst Architecture

OR and SW Wash. Licensed Professionals: 12
OR and SW Wash. employees: 38
Offices Worldwide: 1
Year established: 1992

Disclaimer: This list is compiled based on responses to a survey. Firms are not included if they do not respond to the survey.