Top 100 Office Building Engineering Firms for 2025

Jacobs, WSP, AECOM, Burns & McDonnell, Thornton Tomasetti, Jensen Hughes, Salas O'Brien, CMTA, and NV5 Global head Building Design+Construction's ranking of the nation's largest office building sector engineering and engineering/architecture (EA) firms for 2025, as reported in Building Design+Construction's 2025 Giants 400 Report. Note: This ranking includes revenue for all office building work, including core and shell projects and workplace/interior fitouts.

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