1. Buildings that exceed 25,000 gross square feet.
2. Two or more buildings on the same tax lot that together exceed 50,000 square feet.
3. Two or more buildings owned by a condo association that are governed by the same board of managers and that together exceed 50,000 square feet.
1. Industrial buildings that primarily produce electrical power or steam.
2. Detached or semi-detached buildings of three stories or less, where each owner owns and maintains their own HVAC and hot water systems that serve spaces of 25,000 square feet or less.
LL97 has fines for 2 types of violations:
1. Failure to file a report – $.50 per building square foot, per month.
2. Exceeding emissions limit – $268 for each metric ton over the buildings limit
If a false statement is filed, that is considered a misdemeanor.
The law sets increasingly strict emissions limits over time:
2024–2029: The first set of limits are in effect.
2030–2034: Stricter limits will be enforced, requiring significant action as current data suggests 63% of buildings may exceed these caps without intervention.
2050: The goal is for all covered buildings to meet zero-emissions requirements.
Establish your baseline. We assess your building’s current energy use, fuel types, and equipment to determine your actual carbon output under LL97 metrics.
We calculate your current and projected fines across the 2024–2029 and 2030–2034 compliance windows, so you know exactly what’s at stake and when action is required.
Hudson Clean Heat provides the right solution for your building including domestic hot water decoupling, partial electrification or full electrification with access to rebates and incentives.
Hudson Clean Heat can help connect you with the agencies to file your building’s necessary reports.
As limits tighten in 2030, your compliance strategy must evolve. We provide ongoing support to ensure your building stays ahead of each new threshold through 2050.
Not sure where your building stands?
Contact Hudson Clean Heat Today
