Top 90 Architecture Engineering Firms for 2026

Stantec, HDR, HOK, DLR Group, CannonDesign, Arcadis, SmithGroup, Gresham Smith, and SOM top Building Design+Construction's ranking of the nation's largest architecture engineering (AE) firms for nonresidential building and multifamily housing work, as reported in BD+C's 2026 Giants 400 Report.
By David Barista, Editorial Director
Aug. 19, 2026
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Photo: Dave Burk, courtesy SOM
Photo: Dave Burk, courtesy SOM

Designed by SOM for construction equipment manufacturing company Sany, the dual-tower Sany Guangzhou Pazhou Rootcloud Headquarters in Guangzhou, Guangdong, China, features a striking exterior design highlighted by five-story steel columns rising in a diamond grid pattern. The structural design allows the floors to be suspended from the structure, eliminating the need for interior columns. Photo: Dave Burk, courtesy SOM

Stantec, HDR, HOK, DLR Group, CannonDesign, Arcadis, SmithGroup, Gresham Smith, and SOM top Building Design+Construction's ranking of the nation's largest architecture engineering (AE) firms for nonresidential building and multifamily housing work, as reported in BD+C's 2026 Giants 400 Report.

For more AEC discipline rankings, check out:

  • Top 200 Architecture Firms  
  • Top Engineering Firms (coming August 20)
  • Top Engineering/Architecture (EA) Firms (coming August 21)  
  • Top Contractors (coming August 24)
  • Top Construction Management Firms (coming August 25)

Source: Building Design+Construction's 2026 Giants 400 Report

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