Top 80 Engineering Firms for 2025

WSP, Fluor, Salas O'Brien, IMEG, Jensen Hughes, LANGAN, and NV5 Global top Building Design+Construction's ranking of the nation's largest engineering firms for nonresidential building and multifamily housing work, as reported in BD+C's 2025 Giants 400 Report.
Sept. 15, 2025

WSP, Fluor, Salas O'Brien, IMEG, Jensen Hughes, LANGAN, and NV5 Global top Building Design+Construction's ranking of the nation's largest engineering firms for nonresidential building and multifamily housing work, as reported in BD+C's 2025 Giants 400 Report.

For more AEC discipline rankings, check out:

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

Sign up for Building Design+Construction Newsletters
Get the latest news and updates.