Boston Building Emissions Reduction and Disclosure Ordinance (BERDO 2.0)
BERDO 2.0 emissions standards began enforcement in 2025 for large buildings. Standards apply property-type-specific emissions intensity limits (e.g., 10.2 kg CO2e/sqft for college buildings).
May 15, 2026
Annual energy and water benchmarking report due for 2025 calendar year
2025
Emissions performance standards take effect for large buildings (35+ units or 35,000+ sqft)
2030
Emissions standards extend to smaller covered buildings (15-34 units or 20,000-34,999 sqft)
$234/metric ton CO2e; $150/day late filing
$234 per metric ton of CO2e over the emissions standard; plus $150/day fines for late reporting
City of Boston Environment Department online portal
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