Boston Accelerates Net Zero Carbon

Last week, the Boston Zoning Commission adopted Net Zero Carbon (NZC) zoning. As addressed in our 2021 and 2023 advisories, this completes a three-part decarbonization strategy, along with the Specialized Energy Code and the Boston Emissions Reduction and Disclosure Ordinance (BERDO 2.0).

NZC requires carbon neutrality for new buildings of at least 20,000 square feet or 15 dwelling units, or additions of at least 50,000 square feet, that file for Large Project Review or Small Project Review on or after July 1, 2025. It will not apply to renovations or changes of use. It requires carbon neutrality once new buildings become operational, with exceptions for lab use (until 2035), and hospital and general manufacturing uses (until 2045).