LL97 Penalty Calculator.
Estimate your NYC building's Local Law 97 fine for the 2024-2029 and 2030-2034 compliance periods. No email required. Based on the DOB emissions caps at $268 per metric ton over cap.
LL97 applies to buildings over 25,000 sqft.
Use the Site EUI row on your LL84 benchmarking report (not Source EUI). LL97 emissions math applies to site energy.
Total: 100%
Enter your building details and click Calculate to see your estimated 2024-2029 and 2030-2034 LL97 penalty exposure.
Why the number you just saw is credible
Every calculation runs against the current DOB emissions caps for your occupancy group and the $268 per mtCO2e penalty rate that will show up on your compliance filing. Same rules the DOB will apply to your building. No averaging, no shortcuts, no guesses based on comparable properties.
For the free Snapshot, we also pull your building's actual reported data from NYC Open Data. Same LL84 dataset your benchmarking filing feeds into. Our lookup is dataset-adaptive: when the city publishes a fresher reporting year, this tool picks it up automatically. What you're seeing isn't a guess. It's your building measured against your cap.
What we're not showing here: the beneficial electrification credit, DER production adjustments, deep-carbon retrofit provisions, and weather normalization from your actual utility bills. Those turn a planning-grade estimate into a defensible compliance number, and they need your bills, not just public LL84 data. That's the $495 Cost + Compliance Snapshot (remote, using your bills) or the $2,500 Rapid Diagnostic (adds a site walk and BMS review).
All calcs authored by a CEM + CMVP-certified engineer. Emissions caps and coefficients from RCNY §103-14. Nothing here is a substitute for a formal LL97 compliance filing, which requires certification by a licensed Professional Engineer or Registered Architect.