Giants 400

Top 50 Workplace Interior Engineering Firms for 2023

Jan. 29, 2024
15 min read

AECOM, Jacobs, Alfa Tech Consulting Engineers, Tetra Tech High Performance Buildings Group, and IMEG top BD+C's ranking of the nation's largest workplace interior and interior fitout engineering and engineering/architecture (EA) firms for 2023, as reported in the 2023 Giants 400 Report.

 

Top 50 Workplace Interior Engineering Firms for 2023
 FIRM2022 REVENUE
1AECOM$117,000,000
2Jacobs$100,380,000
3Alfa Tech Consulting Engineers$33,600,000
4Tetra Tech High Performance Buildings Group$33,202,099
5IMEG$20,534,600
6Syska Hennessy Group$19,143,368
7ESD (now Stantec Consulting Services, Inc.)$18,204,657
8AKF$17,605,450
9Thornton Tomasetti$12,028,112
10McKinstry$11,500,000
11Interface Engineering$10,197,764
12Jaros, Baum & Bolles$9,296,015
13CMTA$7,807,766
14Teecom$7,738,814
15Shive-Hattery$7,551,958
16WSP$6,782,488
17Ghafari Associates$6,200,000
18Bala Consulting Engineers$6,060,250
19Langan$6,000,000
20KPFF Consulting Engineers$3,830,465
21TLC Engineering Solutions$3,692,303
22Highland Associates$3,300,000
23Vanderweil Engineers$3,257,400
24CDM Smith$3,179,515
25Henderson Engineers$3,088,322
26Newcomb & Boyd$2,923,495
27Karpinski Engineering$2,700,000
28Salas O'Brien$2,678,542
29ISG$2,424,286
30RTM Engineering Consultants$2,410,950
31ME Engineers$2,400,000
32Heapy$2,335,941
33Affiliated Engineers$2,229,977
34Bridgers & Paxton Consulting Engineers$2,033,096
35Dunham Associates$2,000,000
--Hixson Architecture, Engineering, Interiors$2,000,000
37Kohrs Lonnemann Heil Engineers (KLH)$1,554,207
38Martin/Martin$1,276,832
39Magnusson Klemencic Associates$998,769
40Wick Fisher White$912,602
41Kohler Ronan$819,989
42Davis, Bowen & Friedel$818,825
43PBS Engineers$775,000
44M/E Engineering$762,500
45JP Harvey Engineering Solutions$677,894
46Osborn Engineering$650,000
47Jordan & Skala Engineers$583,309
48SSC Engineering$390,000
49Henderson Building Solutions$350,441
50I.C. Thomasson Associates$300,000
51EVstudio$292,000
52H.F. Lenz$273,182
53DH Engineering$210,628
54BG Buildingworks$110,000
55Arora Engineers$64,333
56Arup$62,825

 


Source: 2023 Giants 400 Report

 

2023 GIANTS 400 REPORT - TOP ARCHITECTURE FIRMS, ENGINEERING FIRMS, AND CONSTRUCTION COMPANIES

A. Top 175 Architecture Firms 
B. Top 115 Architecture/Engineering (AE) Firms 
C. Top 75 Engineering Firms 
D. Top 35 Engineering/Architecture (EA) Firms 
E. Top 150 Contractors                 
F. Top 80 Construction Management Firms                

 

2023 GIANTS 400 REPORT - TOP AEC FIRMS BY BUILDING SECTOR AND SPECIALTY RANKINGS                 

Note: All categories below except for 08 and 23 include multiple rankings for the sector: Top Architecture+AE Firms; Top Engineering+EA Firms; and Top Contractors+CM Firms.

01. Airport Terminals 
• Top 65 Airport Terminal Architecture and AE Firms 
• Top 65 Airport Terminal Engineering and EA Firms 
• Top 60 Airport Terminal Contractors and CM Firms 

02. Convention Centers/Conference Centers 
• Top 40 Convention Center Architecture + AE Firms
• Top 30 Convention Center Engineering + EA Firms 
• Top 20 Convention Center Contractors + CM Firms

03. Cultural Facilities – All Cultural Facilities Work    
• Top 110 Cultural Facilities Architecture and AE Firms – All Cultural Facilities Work 
• Top 60 Cultural Facilities Engineering and EA Firms – All Cultural Facilities Work 
• Top 65 Cultural Facilities Contractors and CM Firms – All Cultural Facilities Work 

04. Cultural Facilities – Museums and Galleries 
• Top 70 Cultural Facilities Architecture and AE Firms – Museums and Galleries 
• Top 40 Cultural Facilities Engineering and EA Firms – Museums and Galleries 
• Top 40 Cultural Facilities Contractors and CM Firms – Museums and Galleries

05. Cultural Facilities – Performing Arts and Concert Venues 
• Top 60 Cultural Facilities Architecture and AE Firms – Performing Arts and Concert Venues 
• Top 40 Cultural Facilities Engineering and EA Firms – Performing Arts and Concert Venues 
• Top 35 Cultural Facilities Contractors and CM Firms – Performing Arts and Concert Venues

06. Cultural Facilities – Public Libraries 
• Top 50 Cultural Facilities Architecture and AE Firms – Public Libraries 
• Top 30 Cultural Facilities Engineering and EA Firms – Public Libraries 
• Top 20 Cultural Facilities Contractors and CM Firms – Public Libraries

07. Data Centers         
• Top 30 Data Center Sector Architecture and AE Firms 
• Top 60 Data Center Sector Engineering and EA Firms 
• Top 50 Data Center Sector Contractors and CM Firms

08. Design-Build Work 
• Top 90 Design-Build Construction Firms

09. Government - All Government Buildings Work 
• Top 170 Government Sector Architecture + AE Firms - All Government Work 
• Top 90 Government Sector Engineering + EA Firms - All Government Work 
• Top 100 Government Sector Contractors + CM Firms - All Government Work

10. Government - Federal Civilian Government 
• Top 70 Federal Government Architecture + AE Firms  
• Top 60 Federal Government Engineering + EA Firms  
• Top 50 Federal Government Contractors + CM Firms 

11. Government - Local Government Buildings 
• Top 150 Local Government Architecture + AE Firms  
• Top 80 Local Government Engineering + EA Firms  
• Top 80 Local Government Contractors + CM Firms 

12. Government - State Government Buildings 
• Top 90 State Government Architecture + AE Firms  
• Top 50 State Government Engineering + EA Firms  
• Top 50 State Government Contractors + CM Firms

13. Government - Military 
• Top 40 Military Facility Architecture + AE Firms  
• Top 50 Military Facility Engineering + EA Firms  
• Top 35 Military Facility Contractors + CM Firms 

14. Government - Veterans Administration Facilities 
• Top 35 Veterans Affairs (VA) Facility Architecture + AE Firms  
• Top 20 Veterans Affairs (VA) Facility Engineering + EA Firms  
• Top 15 Veterans Affairs (VA) Facility Contractors + CM Firms

15. Healthcare – All Healthcare Facilities Work 
Top 175 Healthcare Sector Architecture and AE Firms 
Top 90 Healthcare Sector Engineering and EA Firms 
Top 115 Healthcare Sector Contractors and CM Firms       

16. Healthcare – Hospitals 
Top 130 Hospital Facility Architecture and AE Firms 
Top 80 Hospital Facility Engineering and EA Firms 
Top 90 Hospital Facility Contractors and CM Firms 

17. Healthcare – Medical Office Buildings, Dental Offices 
Top 110 Medical Office Building Architecture and AE Firms 
Top 50 Medical Office Building Engineering and EA Firms 
Top 70 Medical Office Building Contractors and CM Firms

18. Healthcare – Outpatient Facilities  
Top 100 Outpatient Facility Architecture and AE Firms 
Top 40 Outpatient Facility Engineering and EA Firms 
Top 60 Outpatient Facility Contractors and CM Firms

19. Hospitality – All Hospitality Facilities Work (Hotels, Resorts, Casinos) 
Top 130 Hospitality Facility Sector Architecture and AE Firms 
Top 75 Hospitality Facility Engineering and EA Firms 
Top 80 Hospitality Facility Contractors and CM Firms

20. Hospitality — Hotel, Resorts 
Top 120 Hotel Sector Architecture and AE Firms
Top 70 Hotel and Resort Engineering and EA Firms 
Top 80 Hotel and Resort Contractors and CM Firms

21. Hospitality — Casinos 
Top 10 Casino Architecture and AE Firms 
Top 25 Casino Engineering and EA Firms 
Top 25 Casino Contractors and CM Firms 

22. Industrial Buildings — Manufacturing Plants, Warehouses 
Top 100 Industrial Facility Architecture and AE Firms 
Top 90 Industrial Facility Engineering and EA Firms 
Top 100 Industrial Facility Contractors and CM Firms 
        
23. Integrated Project Delivery (IPD) 
Top 20 Integrated Project Delivery (IPD) Construction Firms

24. Multifamily — All Multifamily Facilities Work 
Top 190 Multifamily Sector Architecture and AE Firms — All Multifamily Facilities Work 
Top 75 Multifamily Sector Engineering and EA Firms — All Multifamily Facilities Work 
Top 115 Multifamily Sector Contractors and CM Firms — All Multifamily Facilities Work

25. Multifamily — Apartments, Condominiums 
Top 160 Multifamily Sector Architecture and AE Firms — Apartments, Condominiums Work 
Top 70 Multifamily Sector Engineering and EA Firms — Apartments, Condominiums Work 
Top 100 Multifamily Sector Contractors and CM Firms — Apartments, Condominiums Work

26. Multifamily — Senior Living Facilities 
Top 80 Multifamily Sector Architecture and AE Firms — Senior Living Facilities 
Top 40 Multifamily Sector Engineering and EA Firms — Senior Living Facilities 
Top 60 Multifamily Sector Contractors and CM Firms — Senior Living Facilities

27. Multifamily — Student Housing Facilities 
Top 90 Multifamily Sector Architecture and AE Firms — Student Housing Facilities 
Top 30 Multifamily Sector Engineering and EA Firms — Student Housing Facilities 
Top 40 Multifamily Sector Contractors and CM Firms — Student Housing Facilities

28. Office — All Office Building Work                 
Top 200 Office Sector Architecture and AE Firms 
Top 90 Office Sector Engineering and EA Firms 
Top 120 Office Sector Contractors and CM Firms

29. Office — Buildings/Core+Shell  
Top 140 Office Building Core+Shell Architecture + AE Firms  
Top 80 Office Building Core+Shell Engineering + EA Firms 
Top 100 Office Building Core+Shell Contractors and CM Firms

30. Office — Workplace/Interior Fitouts  
Top 160 Workplace/Interior Fitout Architecture and AE Firms 
Top 50 Workplace/Interior Fitout Engineering and EA Firms 
Top 80 Workplace/Interior Fitout Contractors and CM Firms

31. Parking Structures 
Top 60 Parking Structure Architecture and AE Firms  
Top 45 Parking Structure Engineering and EA Firms 
Top 55 Parking Structure Contractors + CM Firms 

32. Public Safety/Justice Facilities 
Top 90 Justice Facility/Public Safety Sector Architecture and AE Firms 
Top 60 Justice Facility/Public Safety Sector Engineering and EA Firms 
Top 50 Justice Facility/Public Safety Contractors + CM Firms

33. Reconstruction Work 
Top 200 Reconstruction Sector Architecture and AE Firms 
Top 70 Reconstruction Sector Engineering and EA Firms 
Top 140 Reconstruction Sector Contractors + CM Firms

34. Religious Structures/Places of Worship 
Top 80 Religious Facility Architecture and AE Firms 
Top 50 Religious Facility Engineering and EA Firms 
Top 40 Religious Facility Contractors + CM Firms 

35. Retail — All Retail Buildings Work                
Top 140 Retail Sector Architecture and AE Firms — All Retail Buildings Work 
Top 75 Retail Sector Engineering and EA Firms — All Retail Buildings Work 
Top 80 Retail Sector Contractors and CM Firms — All Retail Buildings Work

36. Retail — Entertainment Centers, Cineplexes, Theme Parks 
Top 30 Retail Architecture and AE Firms — Entertainment Centers, Cineplexes, Theme Parks 
Top 40 Retail Engineering and EA Firms — Entertainment Centers, Cineplexes, Theme Parks 
Top 40 Retail Contractors and CM Firms — Entertainment Centers, Cineplexes, Theme Parks

37. Retail — Malls, Big Box Stores, Strip Centers 
Top 90 Retail Architecture and AE Firms - Malls, Big Box Stores, Strip Centers 
Top 60 Retail Engineering and EA Firms — Malls, Big Box Stores, Strip Centers 
Top 60 Retail Contractors and CM Firms — Malls, Big Box Stores, Strip Centers

38. Retail — Restaurants 
Top 90 Retail Architecture and AE Firms — Restaurants 
Top 40 Retail Engineering and EA Firms — Restaurants 
Top 40 Retail Contractors and CM Firms — Restaurants

39. Science & Technology (S+T) Facilities - All S+T Buildings Work 
Top 100 Science + Technology Facility Architecture and AE Firms 
Top 70 Science + Technology Facility Engineering and EA Firms 
Top of 80 Science + Technology Facility Contractors and CM Firms 
           
40. Science & Technology — Laboratories 
Top 100 Laboratory Facility Architecture and AE Firms 
Top 60 Laboratory Facility Engineering and EA Firms 
Top 55 Laboratory Facility Contractors and CM Firms              

41. Schools — PK-12, Public, Private, Charter, Military 
Top 170 K-12 School Sector Architecture and AE Firms 
Top 80 K-12 School Sector Engineering and EA Firms 
Top 100 K-12 School Sector Contractors and CM Firms

42. Sports Facilities/Stadiums/Recreation Facilities  
Top 130 Sports Facility Architecture and AE Firms 
Top 70 Sports Facility Engineering and EA Firms 
Top 70 Sports Facility Contractors and CM Firms      

43. Telecommunications Buildings 
Top 10 Telecommunications Facility Sector Architecture and AE Firms 
Top 25 Telecommunications Facility Sector Engineering and EA Firms 
Top 10 Telecommunications Facilities Contractors + CM Firms

44. Transit Facilities — Bus/Rail Terminals and Stations 
Top 40 Transit Facility Architecture and AE Firms 
Top 40 Transit Facility Engineering and EA Firms 
Top 25 Transit Facilities Contractors + CM Firms

45. University / College Facilities  
• Top 170 University Sector Architecture and AE Firms 
• Top 80 University Sector Engineering and EA Firms 
• Top 100 University Sector Contractors and CM Firms

 

PAST GIANTS 400 REPORTS

2022 Giants 400 Report
2021 Giants 400 Report 
2020 Giants 400 Report 
2019 Giants 300 Report 
2018 Giants 300 Report 
2017 Giants 300 Report

Sign up for Building Design+Construction Newsletters