Local Law 97, where the penalty is priced per ton.
LL97 sets declining carbon caps on buildings over 25,000 sq ft and charges $268 per metric ton above the limit. The first compliance period runs 2024 through 2029, and the limits tighten sharply in 2030.
Dates and thresholds change. We confirm the current requirement for your specific building before anyone acts on it.
What the standard actually asks of a building.
Local Law 97 is not a reporting rule. It is a cap. Every covered building has an annual emissions limit set by property type, and every ton above that limit is charged at $268 per year. Two or more buildings on the same tax lot over 50,000 sq ft are covered together, and so are condominium buildings governed by the same board.
The number that matters is not this year, it is 2030. City analysis of 2024 benchmarking data indicates fewer than one in ten buildings exceeded the first-period cap, while a majority are projected to exceed the 2030 to 2034 limits. A building that is fine today and does nothing for four years is planning for the wrong period.
Before spending capital, we check the arithmetic. A lot of buildings are over the limit on paper because the LL84 benchmarking data or the gross floor area is wrong, and gross floor area for LL97 is not the same figure the Department of Finance carries. Correcting the data does not change the building, but it changes the calculated emissions and the penalty.
How we get you to the standard
Establish the position, choose the route, then document the work.
A penalty you can calculate, which is exactly why boards can act on it.
At $268 per ton over the limit, the cost of doing nothing is a number rather than a worry. That makes the LL97 conversation unusually concrete: here is the gap, here is the annual charge, here is what closing it costs.
The mitigation route is real but conditional. The good faith effort provision is a structured path for owners who are genuinely decarbonising, and it depends on being current with LL84 benchmarking, LL87 audits and retro-commissioning, and LL88 lighting and sub-metering, with a documented plan and evidence of progress.
What a Department of Buildings violation usually means.
New York issues violations per Building Identification Number and escalates quarterly.
Send us the letterSend us the letter itself, not a summary. We read it for the six things that decide the response: who sent it, which building and identifier it names, what period it covers, what it says you failed to do, the cure date, and whether it is a first notice or an escalation. We never quote a running penalty total, and we cure first, then talk to the regulator.
Why boards bring us in
Performance standards are where the money is, and where bad advice is most expensive.
Questions about Local Law 97
Keep reading
The pages that usually matter next for a New York City building.
Know your position before the next deadline.
A first call gets you the gap, the realistic options, and what each one costs. No obligation.
Tell us what is on your plate. We will help you sort it out.
A notice, a deadline, a portfolio, or simply a question. You do not need to have it organized before you call.