by David Barista | Building Design + Construction

Arcadis North America, Stantec, Gensler, KTGY, Perkins Eastman, AO, Niles Bolton Associates, Perkins&Will, and Hord Coplan Macht top Building Design+Construction’s ranking of the nation’s largest multifamily housing sector architecture and architecture/engineering (AE) firms for 2025, as reported in BD+C’s 2025 Report.