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LL97
CMA
Local Law 97: 2026 filings, limits & penalty math.
Updated July 2026
Local Law 97 emission caps for NYC buildings: who's covered, how to calculate your penalty ($268/ton over the limit), the May 1 filing, and reminders.
50,000+ NYC buildings covered
— Monitor this automatically
ViolationWatch tracks Local Law 97 status and deadlines automatically per-building. 60/30/7-day reminders routed to whoever owns the filing. Included in every plan.
60 day
30 day
7 day
- Applies to
- Buildings over 25,000 sq ft (or 50K+ sq ft on same tax lot / condo board)
- Cycle / deadline
- Annual filing; 5-year compliance periods (2024–2029, 2030–2034, …)
- Qualified by
- Registered Design Professional (RA or PE) with NYC energy expertise
- Penalty for missing
- $0.50 per sq ft for failure to file the annual report
— The 30-second answer
Local Law 97 caps the carbon emissions of most NYC buildings over 25,000 square feet. Every covered building must file an emissions report by May 1 each year; emissions above the cap are penalized at $268 per metric ton of CO₂e, and missing the filing costs $0.50 per square foot.
Classifications & outcomes
The three results of a LL97 review.
Building emissions at or below the assigned tCO₂e cap. No penalty owed. Annual report still required.
Excess emissions × $268/tCO₂e = annual penalty. Owner may pursue Good Faith Effort mitigation if actively decarbonizing.
No annual report filed by May 1. Penalty: $0.50/sq ft of gross floor area. Large buildings: six-figure exposure.
The cost of missing
LL97 penalties compound fast.
LL97 enforcement is largely administrative — DOB runs compliance sweeps based on filing status, not complaint volume. Once you're flagged, penalties apply until the underlying filing or condition is resolved.
Missed filing
$0.50 per sq ft for failure to file the annual report
Compliance failure
$268 per metric ton CO₂e over limit (annually); $15/tCO₂e on rent-regulated pathway
Deadline pattern: Annual report due May 1 covering prior calendar year
What we monitor
How ViolationWatch tracks Local Law 97 for every building in your portfolio.
01
Auto-mapping per BIN
We resolve every building you add to its BIN, BBL, block, and lot — and check whether LL97 applies automatically.
02
Deadline calendar
Annual filing; 5-year compliance periods (2024–2029, 2030–2034, …) is computed and calendared per building. Visible in the dashboard; reminders fire at 60, 30, and 7 days.
03
Filing status
We surface any existing LL97 filings on record, so you know before you start whether the building is current, due, or already in arrears.
04
Routing by role
LL97 reminders go to whoever owns compliance filings at your portfolio — property manager, asset manager, legal counsel, or the super.
05
Related violations
LL97 non-compliance commonly generates downstream DOB violations. When one appears, we correlate it to the underlying law automatically.
06
Portfolio rollup
See your entire portfolio's LL97 state at once — compliant vs due vs overdue — in a single dashboard view.
— LL97 questions, answered
What owners ask about Local Law 97.
How do I calculate my Local Law 97 penalty?
Take your building's actual annual emissions (tCO₂e, from utility data converted with the LL97 coefficients), subtract the emissions limit assigned to your occupancy group and floor area, and multiply the excess by $268. Example: 40 tons over the cap = $10,720 per year, every year, until emissions drop.
Which buildings are covered by LL97?
Buildings over 25,000 gross square feet, plus lots with multiple buildings totaling 50,000+ square feet and condo associations governed by one board. Rent-regulated and income-restricted housing follow alternative compliance pathways with different limits and timelines.
When is the Local Law 97 report due?
May 1 of each year, covering the prior calendar year, filed through DOB by a registered design professional. Failing to file costs $0.50 per square foot of gross floor area — for a 100,000 sq ft building that's $50,000, usually more than the emissions penalty itself.
Do the LL97 limits get stricter?
Yes. The current compliance period (2024–2029) has relatively generous caps; the 2030–2034 period cuts most limits sharply — many buildings that pass today will be over the 2030 cap. Retrofit planning is priced against the 2030 numbers, not the current ones.
— Your Local Law 97 deadline is coming
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