BL Companies has now been included on nine lists of the annual Building Design + Construction Giants 400 Report of the top AEC firms in the nation. Two of the recent lists published by BD+C include the Top 90 Multifamily Engineering Firms for 2026 and Top 80 Apartment and Condominium Engineering Firms for 2026.
These lists are the rankings of the nation’s largest multifamily housing sector engineering and engineering/architecture firms and apartment building and condominium engineering and engineering/architecture firms for 2026. 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 90 Multifamily Engineering Firms for 2026 and Top 80 Apartment and Condominium Engineering Firms for 2026.