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2020 Giants 400 Report: Ranking the nation's largest architecture, engineering, and construction firms

The 2020 Giants 400 Report features more than 130 rankings across 25 building sectors and specialty categories.

August 28, 2020 |
2020 GIANTS 400 REPORT landing page Washington College_Semans Griswold Environmental Hall, Ayers Saint Gross

Semans-Griswold Environmental Hall, designed by Ayers Saint Gross, is home to Washington College’s Center for Environment and Society and commands a picturesque site on the Chester River. The river is a living laboratory that provides students with an immersive experience in support of the building’s programs in environmental science and sustainability. The project team is seeking Living Building Challenge Petal Certification for the building. Photo courtesy Ayers Saint Gross


Welcome to the 44th edition of Building Design+Construction's Giants 400 Report (formerly Giants 300). The editors felt a name change was necessary given the growing number of firms (more than 480 this year) that participate in the annual ranking of the nation's largest architecture, engineering, and construction firms. 

The 2020 Giants 400 Report is our most expansive package yet, with more than 130 rankings across 25 building sectors and specialty categories.   

The complete findings for the individual categories are presented below. 

Data for our Giants 400 charts is based on information supplied by the respective firms. Firms are asked to verify the accuracy of their data. The Construction section includes two types of statistics. The Contractors chart reflects revenues for general contracting, design-build, CM at risk, and IPD—projects where all revenues flow through the contractor.

The CM Agent + PM chart lists firms that derive their revenues through fees. In the subsequent market-specific sections (Healthcare, Data Centers, etc.) data labeled “Construction” includes all delivery methods combined (GC, DB, CM at risk, IPD, CM agent, PM).







A. Top 155 Architecture Firms
B. Top 100 Architecture/Engineering (AE) Firms
C. Top 75 Engineering Firms
D. Top 40 Engineering/Architecture (EA) Firms                
E. Top 135 Contractors                
F. Top 85 Construction Management + Project Management Firms  



Note: All categories below except for 08, 23, and 33, include three rankings for the sector: Top Architecture+AE Firms; Top Engineering+EA Firms; and Top Contractors+CMPM Firm

01. Airport Terminals  
02. Convention Centers/Conference Centers        
03. Cultural Facilities – All Cultural Facilities Work        
04. Cultural Facilities – Museums and Galleries        
05. Cultural Facilities – Performing Arts and Concert Venues        
06. Cultural Facilities – Public Libraries        
07. Data Centers        
08. Design-Build Work        
09. Government - All Government Buildings Work        
10. Government - Federal Civilian Government        
11. Government - Local Government Buildings        
12. Government - State Government Buildings        
13. Government - Military        
14. Government - Veterans Administration Facilities        
15. Healthcare – All Healthcare Facilities Work        
16. Healthcare – Hospitals        
17. Healthcare – Medical Office Buildings, Dental Offices        
18. Healthcare – Outpatient Facilities        
19. Hospitality – All Hospitality Facilities Work        
20. Hospitality — Hotel, Resorts        
21. Hospitality — Casinos        
22. Industrial Buildings — Manufacturing Plants, Warehouses        
23. Integrated Project Delivery (IPD)        
24. Multifamily — All Multifamily Facilities Work        
25. Multifamily — Apartments, Condominiums                
26. Multifamily — Senior Living Facilities                
27. Multifamily — Student Housing Facilities                
28. Office — All Office Building Work                
29. Office — Buildings/Core+Shell                
30. Office — Workplace/Interior Fitouts                
31. Parking Structures                
32. Public Safety/Justice Facilities                
33. Reconstruction Work                
34. Religious Structures/Places of Worship                
35. Retail — All Retail Buildings Work                
36. Retail — Entertainment Centers, Cineplexes, Theme Parks        
37. Retail — Malls, Big Box Stores, Strip Centers            
38. Retail — Restaurants                
39. Science & Technology (S+T) Facilities                
40. Science & Technology — Laboratories                
41. Schools — PK-12, Public, Private, Charter, Military            
42. Sports Facilities/Stadiums/Recreation Facilities            
43. Telecommunications Buildings                
44. Transit Facilities — Bus/Rail Terminals and Stations        
45. University / College Facilities 




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