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Gunnar Hubbard

FAIA, LEED Fellow Principal & Sustainability Practice Leader


Gunnar Hubbard is a recognized leader in the green building industry in the U.S., Asia, Europe and the Middle East. He has more than two decades of experience as a licensed architect, consultant, educator and sustainability advocate. In his role as Thornton Tomasetti’s Sustainability practice leader, he oversees green building experts in our New York City, London, San Francisco, Boston and Portland offices, who have performed more than 400 LEED and BREEAM certifications. Gunnar specializes in creating high-performance, low-energy, healthy buildings. He focuses on advancing the firm’s building analytics capabilities and expertise in the Passive House, Living Building Challenge and WELL certification systems. Gunnar was inducted into the U.S. Green Building Council as a LEED Fellow in 2012 and as an American Institute of Architects Fellow in 2015.


M.Arch., University of Oregon

B.S., Environmental Studies, University of Vermont

Gunnar is a member of the American Institute of Architects’ Committee on the Environment, which advances best practices in building design and environmental performance.