Winthrop Center: Next Generation Passive House Office Tower

Case Studies
Written By PassiveHouse MA

Brad Mahoney, Director of Sustainable Development at Millennium Partners, presents on their ground-breaking Winthrop Center project, currently the largest Passive House office building in the world, and the tallest building in Boston's downtown core.

Brad’s slides can be downloaded here.

This event took place on January 13, 2026 at the BSA Space in Boston, MA. It was supported by the Sponsors of Mass Save.

PassiveHouse MA
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