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Will this co-op bill you for Local Law 97?

By Brian · 2026-09-07

The board minutes say the boiler was serviced and the roof is fine. They say nothing about the filing the building already made with the city this year, the one that says whether it burns more carbon than the law allows and owes a fine for every year it stays over. That answer exists before any assessment vote does, and it is public now.

About one in six large apartment buildings that filed a complete 2024 energy report reported more carbon than the emissions cap for their building type allows this compliance period. That cap is not the only way the law can apply to a building's filing. A building where more than a third of the units are rent-regulated, along with income-restricted affordable housing and houses of worship, complies by completing a fixed list of required upgrades instead of being measured against the cap, and an owner already committed to a decarbonization plan can argue for a reduced fine even on the cap track. For a market-rate co-op or condo, the cap is the number that governs, and the fine at today's numbers runs to a median of about $19.6k a year, with the worst tenth clearing $174k. Neither number moves once the board decides how to pay it. Both exist the moment the filing is submitted, which for calendar year 2024 was May 2025.

Why this bill has a number attached before the board does

Every apartment building over 25k square feet reports its whole building's energy use to the city each year, the same filing behind the letter grade posted at the front door. For a market-rate building, Local Law 97 takes that same filing and checks it against a ceiling on carbon emissions per square foot. The ceiling is set separately for each type of building and has applied since calendar year 2024. Go over it and the owner owes a fine, calculated under the city's own rule as the difference between the limit and the reported emissions, multiplied by $268, for every year the building stays over.

The limit itself is not a round number picked for apartment buildings in general. Under that same rule, a large apartment building's ceiling works out to about 6.75 kilograms of carbon dioxide equivalent per square foot each year through 2029. A building at 300k square feet, unremarkable for a prewar co-op with a full block front, is allowed roughly 2,025 metric tons a year before the fine starts. Above that, every additional ton this year costs $268, and the fine resets every year the building has not fixed the underlying problem, whether that is an oil-burning boiler, old distribution losses, a leaky building envelope or some combination of the three.

What the filings already on record say

A large apartment building's own reported carbon output, set against its own reported square footage and that limit, tells you which side of the line it is likely on. The report the city bills from is a separate annual filing that recomputes those tons with the law's own fuel factors, so a building sitting close to its cap can land either side of it. A building well over is over. Run that same comparison for every large apartment building's most recently completed report, filed for calendar year 2024, and the one-in-six figure above is what comes back.

That share is not even across the city. The Bronx runs highest, at about 24% of its apartment buildings already over. Manhattan follows at about 21%. Brooklyn and Queens trail, at about 11% and 13%. Staten Island is left out of this comparison entirely: it has too few benchmarked apartment buildings over 25k square feet to report a share without the count itself identifying individual buildings, so it is suppressed rather than published. None of this spread is a reason a Bronx co-op is worse-run than a Brooklyn one. It means the Bronx building is more likely to be carrying a bill nobody has mentioned yet.

The bigger number is what happens next without anyone changing anything. The same rule sets a tighter ceiling for 2030 through 2034, about 3.35 kilograms per square foot, roughly half of today's limit. Hold every building's emissions exactly where they are reported now and check them against that tighter number instead: roughly five in six of the same buildings would already be over it. A building comfortably under the current limit is not necessarily comfortable for long, and a board that has not started planning a retrofit is planning to pay the fine instead.

What this changes about reading the board package

A capital assessment usually reaches the minutes only after the board has already decided how to cover it, which can run years behind the underlying bill. The building's own emissions filing does not wait for that vote. It is a public record the moment it is submitted, checked against a public limit set by the same rule for every building of its type, so the arithmetic behind a future assessment is available before the board has said a word about one.

What it will not tell you is whether the reserve fund already covers a shortfall, or whether the building is mid-retrofit with financing already arranged. A managing agent who can answer, without looking anything up, whether the building is over its current limit and what happens in 2030 has already done the reading a buyer would otherwise do alone. One who has to go check has told a buyer something too.

Look up the building's address to see its energy grade and every other record on file for the lot in one place. What your NYC co-op is about to bill you for covers the other half of that same annual filing, the letter grade and the facade cycle sitting next to it. What a BBL is and where it stops explains why the energy filing follows the lot rather than the individual apartment, so a shareholder gets billed for the whole building's number and not their own unit's share of it.

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