Updated July 2026
One of them is weeks away. The other closes at the end of this year and is worth more money than almost anything else you'll be told about Local Law 97.
The final LL97 filing deadline for buildings that took the BEAM Portal extension. If you filed the extension in June, this is your hard stop — there is nothing after it.
Covering 2025 emissions. For many co-ops and condos this was the first filing they were ever required to make.
The 60-day grace window shut. Buildings could buy time by filing a BEAM Portal extension for a $60 fee — but only until this date.
If you extended, you file by this date or you don't file. If you never filed anything at all, you're already exposed and every week the story gets harder to tell.
Qualifying equipment installed before 2027 earns double Beneficial Electrification Credit. Install in 2027 and you get the standard rate instead.
Limits tighten substantially. Because retrofits need 18–36 months to design, approve, finance and install, your 2030 position is decided by decisions made now.
The credit you bank by installing early can be applied against penalties right through to 2036. That's the long tail of a decision made this year.
August is a filing deadline — miss it and you have a paperwork problem. December is an economic one.
If your building is going to replace a boiler, a hot water system, or convert to heat pumps in the next few years, doing it before January 1 doubles the credit you earn against every future penalty assessment through 2036.
For a board that was already planning capital work "sometime soon," moving it forward a few months is one of the highest-return decisions available. Most boards will find out about it after the window shuts.
This is the most common call we take right now, and it is not a catastrophe. Late and correct beats absent. The sooner a filing is in, the smaller the story is — and the sooner you know your real number, the sooner the board can stop guessing.
The arithmetic
The penalty is $268 for every metric ton of CO2e above your cap. It is charged annually. It does not compound, and it is not forgiven. It simply repeats, every year, until the building's carbon profile changes.
Here's what that looks like for a mid-size co-op running 200 tons over its limit:
That quarter of a million dollars buys nothing. It doesn't improve the building, it doesn't lower an energy bill, and it doesn't make a single unit easier to sell. It is money that could have paid for most of the retrofit that ends the penalty permanently.
And it gets worse after 2030, because the caps step down and the same building goes further over the line.
A penalty on the books is not only a cost. Prospective buyers and their attorneys are already screening for LL97 exposure during due diligence. A building with a recurring fine and no compliance roadmap is a harder sale and a harder mortgage — which means the cost lands on every shareholder's equity, not just the reserve fund.
That's the argument that actually moves a co-op board, and it's the one we help you put in front of your shareholders.
The absence of a notice is not evidence of compliance — it usually just means the City hasn't gotten to you. Meanwhile the exposure accrues from the emissions, not from the letter.
The penalty period started in 2024 and runs annually. By 2030 you'd have paid five years of fines and lost the double credit — arriving at the tighter caps with less money and fewer options.
Most small agents are stretched across dozens of buildings and have no carbon accounting capability. Ask yours directly what your cap is and what you're over by. The answer tells you where you stand.
Send an address, get your exposure. Or book thirty minutes and we'll walk through it together — no cost, no obligation, no jargon.