Marc Leff


Partner | AIA, LEED AP

212 229 9211

Marc Leff

Marc Leff


Partner | AIA, LEED AP

212 229 9211



Marc Leff has been with the firm since 1993 and became a partner in 2002. He guides the practice to ensure that all our architectural work achieves an exacting formal and functional clarity. Marc’s particular talent lies in designing ground-up buildings that achieve a balance between boldly sculptural form and sensitive integration into urban and social contexts. He also oversees our finances and operations to ensure that the firm’s high quality of service and focus on design are always aligned.

Marc has led some of the firm’s most iconic projects, including the full-block development for Cummins Inc. in Indianapolis, the Irwin Union Bank building, and the Marianne Boesky Gallery. For more than fifteen years, he has split his time between Reykjavik, Iceland, and New York City, which mirrors his belief that designing the firm’s exacting projects requires both thought-filled solitude and a collaborative effort based on intense communication. Marc earned an undergraduate degree in architecture from Yale University.

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