Top 200 Multifamily Architecture Firms for 2026

Arcadis North America, Gensler, Stantec, KTGY, Perkins Eastman, AO, SCB, Niles Bolton Associates, and HCM top Building Design+Construction's ranking of the nation's largest multifamily housing sector architecture and architecture/engineering (AE) firms for 2026, as reported in BD+C's 2026 Giants 400 Report.
By David Barista, Editorial Director
Sept. 29, 2026
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Photo: Patrick Argast, courtesy Mithun
Photo: Patrick Argast, courtesy Mithun

Pictured: 400 China Basin, an affordable condominium housing development in the heart of San Francisco, designed by Mithun in collaboration with Y.A. Studio, associate architect. Photo: Patrick Argast, courtesy Mithun

Arcadis North America, Gensler, Stantec, KTGY, Perkins Eastman, AO, SCB, Niles Bolton Associates, and HCM top Building Design+Construction's ranking of the nation's largest multifamily housing sector architecture and architecture/engineering (AE) firms for 2026, as reported in BD+C's 2026 Giants 400 Report.

Source: Building Design+Construction's 2026 Giants 400 Report

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