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Top 55 Laboratory Construction Firms for 2023

Whiting-Turner, DPR Construction, STO Building Group, Skanska, and Hensel Phelps top BD+C's ranking of the nation's largest laboratory general contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.


Giants 400

Top 60 Laboratory Engineering Firms for 2023

Jacobs, Affiliated Engineers, Burns & McDonnell, Tetra Tech, and WSP head BD+C's ranking of the nation's largest laboratory engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.


Giants 400

Top 100 Laboratory Design Firms for 2023

HDR, Flad Architects, DGA, Elkus Manfredi Architects, and Gensler top BD+C's ranking of the nation's largest laboratory architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.


Giants 400

Top 80 Science + Technology Facility Construction Firms for 2023

DPR Construction, Austin Industries, Whiting-Turner, and Gilbane top BD+C's ranking of the nation's largest science and technology (S+T) facility general contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking factors revenue from all science and technology (S+T) buildings work, including laboratories, research buildings, technology/innovation buildings, pharmaceutical production facilities, and semiconductor production facilities.

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Building Design+Construction's Giants 400 Report ranks the largest architecture, engineering, and construction firms in the U.S. This year a record 519 AEC firms participated in BD+C's Giants 400 report. The final report includes more than 130 rankings across 25 building sectors and specialty categories. Check out the Giants 400 page.    

Giants 400 | Aug 31, 2023

Top 35 Engineering Architecture Firms for 2023

Jacobs, AECOM, Alfa Tech, Burns & McDonnell, and Ramboll top the rankings of the nation's largest engineering architecture (EA) firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Aug 30, 2023

Top 75 Engineering Firms for 2023

Kimley-Horn, WSP, Tetra Tech, Langan, and IMEG head the rankings of the nation's largest engineering firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Aug 22, 2023

Top 115 Architecture Engineering Firms for 2023

Stantec, HDR, Page, HOK, and Arcadis North America top the rankings of the nation's largest architecture engineering (AE) firms for nonresidential building and multifamily housing work, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Aug 22, 2023

2023 Giants 400 Report: Ranking the nation's largest architecture, engineering, and construction firms

A record 552 AEC firms submitted data for BD+C's 2023 Giants 400 Report. The final report includes 137 rankings across 25 building sectors and specialty categories.

Giants 400 | Aug 22, 2023

Top 175 Architecture Firms for 2023

Gensler, HKS, Perkins&Will, Corgan, and Perkins Eastman top the rankings of the nation's largest architecture firms for nonresidential building and multifamily housing work, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Aug 22, 2023

BD+C's Giants 400 Rankings

Every spring, the editors of Building Design+Construction survey the nation's largest architecture, engineering, and construction firms to identify the most prominent design and construction firms across 25 building sectors and specialty categories. Meet the Giants 400. 

Giants 400 | Feb 14, 2023

Call for surveys: 2023 Giants 400 Report

The 2023 Giants 400 Report will feature more than 130 AEC firm rankings across 25 building sectors and specialty categories.

Giants 400 | Feb 9, 2023

New Giants 400 download: Get the complete at-a-glance 2022 Giants 400 rankings in Excel

See how your architecture, engineering, or construction firm stacks up against the nation's AEC Giants. For more than 45 years, the editors of Building Design+Construction have surveyed the largest AEC firms in the U.S./Canada to create the annual Giants 400 report. This year, a record 519 firms participated in the Giants 400 report. The final report includes 137 rankings across 25 building sectors and specialty categories.   

Giants 400 | Feb 6, 2023

2022 Reconstruction Sector Giants: Top architecture, engineering, and construction firms in the U.S. building reconstruction and renovation sector

Gensler, Stantec, IPS, Alfa Tech, STO Building Group, and Turner Construction top BD+C's rankings of the nation's largest reconstruction sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.

Giants 400 | Feb 6, 2023

2022 Transit Facility Giants: Top architecture, engineering, and construction firms in the U.S. transit facility sector

Walsh Group, Skanska USA, HDR, Perkins and Will, and AECOM top BD+C's rankings of the nation's largest transit facility sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.

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