Tools
New York City Local Law 97 Calculator
Custom Penalty Calculator
Your building
Local Law 97 applies only to covered buildings with 25,000 gross square feet or more.
Gross square footage cannot exceed 20,000,000.
GHG emissions cannot exceed 1,000,000 tCO₂e per year.
Enter your building details to see
your compliance status and
estimated penalty exposure.
Penalty estimate = max(0, annual GHG emissions − allowable emissions) × $268 per metric ton. Allowable emissions = (limit for your property type, tCO₂e/sf) × gross square footage. Limits follow published LL97 Category B building emissions coefficients. Actual penalties depend on verified emissions, occupancy classification, and exemptions. For informational purposes only — not legal or financial advice.