Displaying its multidisciplinary prowess, BL Companies is ranked on five lists in Building Design + Construction’s annual Giants 400 Report of the top AEC firms in the nation. BL is on BD+C’s Top 400 Building Design Firms, Top 100 Industrial Sector Engineering Firms, Top 90 K-12 School Engineering Firms, Top 75 Sports Facility Engineering Firms and Top 40 Engineering Architecture Firms for 2026.
The Building Design list includes the nation’s largest architecture and engineering firms for nonresidential buildings and multifamily buildings work. The Industrial Sector Engineering list ranks the nation’s largest industrial facility sector engineering and engineering/architecture (EA) firms. The K-12 School Engineering list includes the largest K-12 school building engineering and engineering/architecture firms. The Sports Facility Engineering list includes the largest sports and recreation facility engineering and engineering/architecture firms, and the Engineering Architecture list includes the largest engineering architecture firms in the country for nonresidential buildings and multifamily buildings work. These rankings are compiled from the nearly 600 AEC firms that completed the 2026 Giants 400 survey and are based on revenue from 2025.
Firms were asked to report gross revenue from commercial, institutional, multifamily and industrial “buildings” work completed by their U.S./Canada-based staff/studios/divisions/teams. They were asked to exclude revenue from non-buildings work or from single-family residential work. This ranking does not include contractor, design/build or construction management (CM) revenue reported by firms. However, it does include contractors and CM companies that reported architecture and engineering revenue for 2025.
Read the full list of the Top 400 Building Design Firms, the Top 100 Industrial Sector Engineering Firms, the Top 90 K-12 School Engineering Firms, the Top 75 Sports Facility Engineering Firms and the Top 40 Engineering Architecture Firms.