Boston Building Emissions Reduction and Disclosure (BERDO)

Submission deadline June 30, 2025
The By-law concerning greenhouse gas emission disclosures and ratings of large buildings came into force on September 27, 2021 and affects buildings over 20,000 ft2 or 25+ residential units.
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Affected Buildings

Buildings over 20,000 ft2
or 35+ units

Deadline

May 15th, 2025

Fines

Up to $4,000/building

The GHG Emission Disclosures and Ratings By-Law for Large Buildings in Boston (BERDO) is designed to reduce emissions by requiring property owners to disclose their energy performance.