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.
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| Top 50 Workplace Interior Engineering Firms for 2023 | ||
| Â | FIRM | 2022 REVENUE |
| 1 | AECOM | $117,000,000 |
| 2 | Jacobs | $100,380,000 |
| 3 | Alfa Tech Consulting Engineers | $33,600,000 |
| 4 | Tetra Tech High Performance Buildings Group | $33,202,099 |
| 5 | IMEG | $20,534,600 |
| 6 | Syska Hennessy Group | $19,143,368 |
| 7 | ESD (now Stantec Consulting Services, Inc.) | $18,204,657 |
| 8 | AKF | $17,605,450 |
| 9 | Thornton Tomasetti | $12,028,112 |
| 10 | McKinstry | $11,500,000 |
| 11 | Interface Engineering | $10,197,764 |
| 12 | Jaros, Baum & Bolles | $9,296,015 |
| 13 | CMTA | $7,807,766 |
| 14 | Teecom | $7,738,814 |
| 15 | Shive-Hattery | $7,551,958 |
| 16 | WSP | $6,782,488 |
| 17 | Ghafari Associates | $6,200,000 |
| 18 | Bala Consulting Engineers | $6,060,250 |
| 19 | Langan | $6,000,000 |
| 20 | KPFF Consulting Engineers | $3,830,465 |
| 21 | TLC Engineering Solutions | $3,692,303 |
| 22 | Highland Associates | $3,300,000 |
| 23 | Vanderweil Engineers | $3,257,400 |
| 24 | CDM Smith | $3,179,515 |
| 25 | Henderson Engineers | $3,088,322 |
| 26 | Newcomb & Boyd | $2,923,495 |
| 27 | Karpinski Engineering | $2,700,000 |
| 28 | Salas O'Brien | $2,678,542 |
| 29 | ISG | $2,424,286 |
| 30 | RTM Engineering Consultants | $2,410,950 |
| 31 | ME Engineers | $2,400,000 |
| 32 | Heapy | $2,335,941 |
| 33 | Affiliated Engineers | $2,229,977 |
| 34 | Bridgers & Paxton Consulting Engineers | $2,033,096 |
| 35 | Dunham Associates | $2,000,000 |
| -- | Hixson Architecture, Engineering, Interiors | $2,000,000 |
| 37 | Kohrs Lonnemann Heil Engineers (KLH) | $1,554,207 |
| 38 | Martin/Martin | $1,276,832 |
| 39 | Magnusson Klemencic Associates | $998,769 |
| 40 | Wick Fisher White | $912,602 |
| 41 | Kohler Ronan | $819,989 |
| 42 | Davis, Bowen & Friedel | $818,825 |
| 43 | PBS Engineers | $775,000 |
| 44 | M/E Engineering | $762,500 |
| 45 | JP Harvey Engineering Solutions | $677,894 |
| 46 | Osborn Engineering | $650,000 |
| 47 | Jordan & Skala Engineers | $583,309 |
| 48 | SSC Engineering | $390,000 |
| 49 | Henderson Building Solutions | $350,441 |
| 50 | I.C. Thomasson Associates | $300,000 |
| 51 | EVstudio | $292,000 |
| 52 | H.F. Lenz | $273,182 |
| 53 | DH Engineering | $210,628 |
| 54 | BG Buildingworks | $110,000 |
| 55 | Arora Engineers | $64,333 |
| 56 | Arup | $62,825 |
Source: 2023 Giants 400 Report
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2023 GIANTS 400 REPORT - TOP ARCHITECTURE FIRMS, ENGINEERING FIRMS, AND CONSTRUCTION COMPANIES
A. Top 175 Architecture FirmsÂ
B. Top 115 Architecture/Engineering (AE)Â FirmsÂ
C. Top 75 Engineering FirmsÂ
D. Top 35 Engineering/Architecture (EA) FirmsÂ
E. Top 150 Contractors            Â
F. Top 80 Construction Management Firms           Â
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2023 GIANTS 400 REPORT - TOP AEC FIRMS BY BUILDING SECTOR AND SPECIALTY RANKINGS Â Â Â Â Â Â Â Â Â Â Â Â
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+CMÂ Firms.
01. Airport TerminalsÂ
• Top 65 Airport Terminal Architecture and AE FirmsÂ
• Top 65 Airport Terminal Engineering and EA FirmsÂ
• Top 60 Airport Terminal Contractors and CM FirmsÂ
02. Convention Centers/Conference CentersÂ
• Top 40 Convention Center Architecture + AE Firms
• Top 30 Convention Center Engineering + EA FirmsÂ
• Top 20 Convention Center Contractors + CM Firms
03. Cultural Facilities – All Cultural Facilities Work  Â
• Top 110 Cultural Facilities Architecture and AE Firms – All Cultural Facilities WorkÂ
• Top 60 Cultural Facilities Engineering and EA Firms – All Cultural Facilities WorkÂ
• Top 65 Cultural Facilities Contractors and CM Firms – All Cultural Facilities WorkÂ
04. Cultural Facilities – Museums and GalleriesÂ
• Top 70 Cultural Facilities Architecture and AE Firms – Museums and GalleriesÂ
• Top 40 Cultural Facilities Engineering and EA Firms – Museums and GalleriesÂ
• Top 40 Cultural Facilities Contractors and CM Firms – Museums and Galleries
05. Cultural Facilities – Performing Arts and Concert VenuesÂ
• Top 60 Cultural Facilities Architecture and AE Firms – Performing Arts and Concert VenuesÂ
• Top 40 Cultural Facilities Engineering and EA Firms – Performing Arts and Concert VenuesÂ
• Top 35 Cultural Facilities Contractors and CM Firms – Performing Arts and Concert Venues
06. Cultural Facilities – Public LibrariesÂ
• Top 50 Cultural Facilities Architecture and AE Firms – Public LibrariesÂ
• Top 30 Cultural Facilities Engineering and EA Firms – Public LibrariesÂ
• Top 20 Cultural Facilities Contractors and CM Firms – Public Libraries
07. Data Centers      Â
• Top 30 Data Center Sector Architecture and AE FirmsÂ
• Top 60 Data Center Sector Engineering and EA FirmsÂ
• Top 50 Data Center Sector Contractors and CM Firms
08. Design-Build WorkÂ
• Top 90 Design-Build Construction Firms
09. Government - All Government Buildings WorkÂ
• Top 170 Government Sector Architecture + AE Firms - All Government WorkÂ
• Top 90 Government Sector Engineering + EA Firms - All Government WorkÂ
• Top 100 Government Sector Contractors + CM Firms - All Government Work
10. Government - Federal Civilian GovernmentÂ
• Top 70 Federal Government Architecture + AE Firms Â
• Top 60 Federal Government Engineering + EA Firms Â
• Top 50 Federal Government Contractors + CM FirmsÂ
11. Government - Local Government BuildingsÂ
• Top 150 Local Government Architecture + AE Firms Â
• Top 80 Local Government Engineering + EA Firms Â
• Top 80 Local Government Contractors + CM FirmsÂ
12. Government - State Government BuildingsÂ
• Top 90 State Government Architecture + AE Firms Â
• Top 50 State Government Engineering + EA Firms Â
• Top 50 State Government Contractors + CM Firms
13. Government - MilitaryÂ
• Top 40 Military Facility Architecture + AE Firms Â
• Top 50 Military Facility Engineering + EA Firms Â
• Top 35 Military Facility Contractors + CM FirmsÂ
14. Government - Veterans Administration FacilitiesÂ
• Top 35 Veterans Affairs (VA) Facility Architecture + AE Firms Â
• Top 20 Veterans Affairs (VA) Facility Engineering + EA Firms Â
• Top 15 Veterans Affairs (VA) Facility Contractors + CM Firms
15. Healthcare – All Healthcare Facilities WorkÂ
• Top 175 Healthcare Sector Architecture and AE FirmsÂ
• Top 90 Healthcare Sector Engineering and EA FirmsÂ
• Top 115 Healthcare Sector Contractors and CM Firms   Â
16. Healthcare – HospitalsÂ
• Top 130 Hospital Facility Architecture and AE FirmsÂ
• Top 80 Hospital Facility Engineering and EA FirmsÂ
• Top 90 Hospital Facility Contractors and CM FirmsÂ
17. Healthcare – Medical Office Buildings, Dental OfficesÂ
• Top 110 Medical Office Building Architecture and AE FirmsÂ
• Top 50 Medical Office Building Engineering and EA FirmsÂ
• Top 70 Medical Office Building Contractors and CM Firms
18. Healthcare – Outpatient Facilities Â
• Top 100 Outpatient Facility Architecture and AE FirmsÂ
• Top 40 Outpatient Facility Engineering and EA FirmsÂ
• Top 60 Outpatient Facility Contractors and CM Firms
19. Hospitality – All Hospitality Facilities Work (Hotels, Resorts, Casinos)Â
• Top 130 Hospitality Facility Sector Architecture and AE FirmsÂ
• Top 75 Hospitality Facility Engineering and EA FirmsÂ
• Top 80 Hospitality Facility Contractors and CM Firms
20. Hospitality — Hotel, ResortsÂ
• Top 120 Hotel Sector Architecture and AE Firms
• Top 70 Hotel and Resort Engineering and EA FirmsÂ
• Top 80 Hotel and Resort Contractors and CM Firms
21. Hospitality — CasinosÂ
• Top 10 Casino Architecture and AE FirmsÂ
• Top 25 Casino Engineering and EA FirmsÂ
• Top 25 Casino Contractors and CM FirmsÂ
22. Industrial Buildings — Manufacturing Plants, WarehousesÂ
• Top 100 Industrial Facility Architecture and AE FirmsÂ
• Top 90 Industrial Facility Engineering and EA FirmsÂ
• Top 100 Industrial Facility Contractors and CM FirmsÂ
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23. Integrated Project Delivery (IPD)Â
• Top 20 Integrated Project Delivery (IPD) Construction Firms
24. Multifamily — All Multifamily Facilities WorkÂ
Top 190 Multifamily Sector Architecture and AE Firms — All Multifamily Facilities WorkÂ
Top 75 Multifamily Sector Engineering and EA Firms — All Multifamily Facilities WorkÂ
Top 115 Multifamily Sector Contractors and CM Firms — All Multifamily Facilities Work
25. Multifamily — Apartments, CondominiumsÂ
Top 160 Multifamily Sector Architecture and AE Firms — Apartments, Condominiums WorkÂ
Top 70 Multifamily Sector Engineering and EA Firms — Apartments, Condominiums WorkÂ
Top 100 Multifamily Sector Contractors and CM Firms — Apartments, Condominiums Work
26. Multifamily — Senior Living FacilitiesÂ
Top 80 Multifamily Sector Architecture and AE Firms — Senior Living FacilitiesÂ
Top 40 Multifamily Sector Engineering and EA Firms — Senior Living FacilitiesÂ
Top 60 Multifamily Sector Contractors and CM Firms — Senior Living Facilities
27. Multifamily — Student Housing FacilitiesÂ
Top 90 Multifamily Sector Architecture and AE Firms — Student Housing FacilitiesÂ
Top 30 Multifamily Sector Engineering and EA Firms — Student Housing FacilitiesÂ
Top 40 Multifamily Sector Contractors and CM Firms — Student Housing Facilities
28. Office — All Office Building Work            Â
• Top 200 Office Sector Architecture and AE FirmsÂ
• Top 90 Office Sector Engineering and EA FirmsÂ
• Top 120 Office Sector Contractors and CM Firms
29. Office — Buildings/Core+Shell Â
• Top 140 Office Building Core+Shell Architecture + AE Firms Â
• Top 80 Office Building Core+Shell Engineering + EA FirmsÂ
• Top 100 Office Building Core+Shell Contractors and CM Firms
30. Office — Workplace/Interior Fitouts Â
• Top 160 Workplace/Interior Fitout Architecture and AE FirmsÂ
• Top 50 Workplace/Interior Fitout Engineering and EA FirmsÂ
• Top 80 Workplace/Interior Fitout Contractors and CM Firms
31. Parking StructuresÂ
• Top 60 Parking Structure Architecture and AE Firms Â
• Top 45 Parking Structure Engineering and EA FirmsÂ
• Top 55 Parking Structure Contractors + CM FirmsÂ
32. Public Safety/Justice FacilitiesÂ
• Top 90 Justice Facility/Public Safety Sector Architecture and AE FirmsÂ
• Top 60 Justice Facility/Public Safety Sector Engineering and EA FirmsÂ
• Top 50 Justice Facility/Public Safety Contractors + CM Firms
33. Reconstruction WorkÂ
• Top 200 Reconstruction Sector Architecture and AE FirmsÂ
• Top 70 Reconstruction Sector Engineering and EA FirmsÂ
• Top 140 Reconstruction Sector Contractors + CM Firms
34. Religious Structures/Places of WorshipÂ
• Top 80 Religious Facility Architecture and AE FirmsÂ
• Top 50 Religious Facility Engineering and EA FirmsÂ
• Top 40 Religious Facility Contractors + CM FirmsÂ
35. Retail — All Retail Buildings Work        Â
• Top 140 Retail Sector Architecture and AE Firms — All Retail Buildings WorkÂ
• Top 75 Retail Sector Engineering and EA Firms — All Retail Buildings WorkÂ
• Top 80 Retail Sector Contractors and CM Firms — All Retail Buildings Work
36. Retail — Entertainment Centers, Cineplexes, Theme ParksÂ
• Top 30 Retail Architecture and AE Firms — Entertainment Centers, Cineplexes, Theme ParksÂ
• Top 40 Retail Engineering and EA Firms — Entertainment Centers, Cineplexes, Theme ParksÂ
• Top 40 Retail Contractors and CM Firms — Entertainment Centers, Cineplexes, Theme Parks
37. Retail — Malls, Big Box Stores, Strip CentersÂ
• Top 90 Retail Architecture and AE Firms - Malls, Big Box Stores, Strip CentersÂ
• Top 60 Retail Engineering and EA Firms — Malls, Big Box Stores, Strip CentersÂ
• Top 60 Retail Contractors and CM Firms — Malls, Big Box Stores, Strip Centers
38. Retail — RestaurantsÂ
• Top 90 Retail Architecture and AE Firms — RestaurantsÂ
• Top 40 Retail Engineering and EA Firms — RestaurantsÂ
• Top 40 Retail Contractors and CM Firms — Restaurants
39. Science & Technology (S+T) Facilities - All S+T Buildings WorkÂ
• Top 100 Science + Technology Facility Architecture and AE FirmsÂ
• Top 70 Science + Technology Facility Engineering and EA FirmsÂ
• Top of 80 Science + Technology Facility Contractors and CM FirmsÂ
      Â
40. Science & Technology — LaboratoriesÂ
• Top 100 Laboratory Facility Architecture and AE FirmsÂ
• Top 60 Laboratory Facility Engineering and EA FirmsÂ
• Top 55 Laboratory Facility Contractors and CM Firms        Â
41. Schools — PK-12, Public, Private, Charter, MilitaryÂ
• Top 170 K-12 School Sector Architecture and AE FirmsÂ
• Top 80 K-12 School Sector Engineering and EA FirmsÂ
• Top 100 K-12 School Sector Contractors and CM Firms
42. Sports Facilities/Stadiums/Recreation Facilities Â
• Top 130 Sports Facility Architecture and AE FirmsÂ
• Top 70 Sports Facility Engineering and EA FirmsÂ
• Top 70 Sports Facility Contractors and CM Firms   Â
43. Telecommunications BuildingsÂ
• Top 10 Telecommunications Facility Sector Architecture and AE FirmsÂ
• Top 25 Telecommunications Facility Sector Engineering and EA FirmsÂ
• Top 10 Telecommunications Facilities Contractors + CM Firms
44. Transit Facilities — Bus/Rail Terminals and StationsÂ
• Top 40 Transit Facility Architecture and AE FirmsÂ
• Top 40 Transit Facility Engineering and EA FirmsÂ
• Top 25 Transit Facilities Contractors + CM Firms
45. University / College Facilities Â
• Top 170 University Sector Architecture and AE FirmsÂ
• Top 80 University Sector Engineering and EA FirmsÂ
• Top 100 University Sector Contractors and CM Firms
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PAST GIANTS 400 REPORTS
2022 Giants 400 Report
2021 Giants 400 ReportÂ
2020 Giants 400 ReportÂ
2019 Giants 300 ReportÂ
2018Â Giants 300 ReportÂ
2017Â Giants 300 Report
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