Osborn Triangle

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October 22, 2025

The Decarbonization Study of Osborn Triangle – a three-building, 667,000 SF campus is comprised of 610 Main Street, 1 Portland Street, and 700 Main Street, which houses tenants such as Pfizer, Novartis, and LabCentral – identified cost-effective strategies to reduce the buildings’ carbon emissions while maintaining operational efficiency and supporting long-term sustainability goals. 

AHA provided Energy & Sustainability and Advisory services. Our Decarbonization Study investigated the buildings’ infrastructure systems, energy use, and carbon exposure to develop a detailed decarbonization roadmap outlining targeted upgrades, cost impacts, and payback analysis to guide Bulfinch’s carbon reduction planning to achieve both short and long term compliance with Cambridge’s Building Energy Use Disclosure Ordinance (BUEDO).Â