Top 50 Laboratory Construction Firms for 2025

Whiting-Turner Contracting, Skanska USA, Suffolk, Hensel Phelps, STO Building Group, Gilbane Building Company, Level 10 Construction, and McCarthy Holdings top Building Design+Construction's ranking of the nation's largest laboratory general contractors and construction management (CM) firms for 2025, as reported in BD+C's 2025 Giants 400 Report.

Source: Building Design+Construction's 2025 Giants 400 Report