Compliance Table: Laws, Deadlines, and Requirements
Before getting into the most common mistakes, it helps to see the main deadlines in one place. The table below gives a quick overview of the key NYC compliance laws, what is due, and what building owners may face if they miss a filing.
| LAW (CITY SUSTAINABILITY) |
PRIMARY DEADLINE(S) IN 2026 |
WHAT TO SUBMIT |
PENALTY (IF KNOWN/UNSPECIFIED) |
| LL84 – Energy Benchmarking |
May 1 (2026 data); if missed: Aug 1, Nov 1, Feb 1 (2027) |
Annual energy & water usage data (via EPA Portfolio Manager) |
$500 per quarter late (up to $2,000/year) per building |
| LL97 – GHG Emissions |
May 1 (report 2025 data); grace to June 30; extension to Aug 29 if applied |
Annual greenhouse gas (CO₂) emissions report (certified by RDP) |
$268 per excess ton CO₂ (Article 320); others unspecified |
| LL33 – Energy Grades |
Oct 1–31 annually (first grade Oct 2026) |
Building Energy Efficiency Rating label (posted near entrance; report via BEAM) |
N/A (no fine explicitly stated) |
| LL87 – Energy Audit/RCx |
Dec 31, 2026 |
Energy Efficiency Report (audit + retro-commissioning) |
Unspecified in sources (likely NYC violation fines) |
| LL88 – Lighting & Submetering |
May 1 (if not already compliant) |
Lighting upgrade and submetering compliance report (attestations) |
Filing fee $115; direct penalties unspecified |
Ensure you understand each requirement and submit in the format expected. If any detail (like a specific penalty amount) isn’t clearly published, treat it as “to be confirmed” and focus on compliance.
Mistake 1: Assuming You Don’t Need to File
Many owners mistakenly think “benchmarking” or “audits” don’t apply to their buildings. In reality, any property over 25,000 square feet (or multiple buildings on one lot over 100,000 sq ft) must file LL84 benchmarking data by May 1. Even small condo buildings or co-ops may qualify if combined on one tax lot. If you’re on the DOB’s Covered Buildings List, you must submit 2025 energy and water usage in EPA Portfolio Manager by May 1, 2026. Likewise, buildings subject to LL97 (carbon emissions law) must file a greenhouse gas report by May 1 (or by June 30 with an extension). Double-check whether your building appears on these lists now. If you wrongly skip it, expect immediate fines.
How to fix it: Use your tax bill’s BBL number to verify your building’s status on NYC’s LL84 and LL97 covered lists. If your building meets the size or property criteria, treat these filings as mandatory tasks – not optional. Don’t assume “nobody told me” or “I’m exempt” without confirming.
Mistake 2: Waiting Until the Last Minute
Procrastinating until the last week is a sure recipe for trouble. Gathering a full year of utility data, verifying accuracy, and getting it approved in NYC’s system can easily take weeks. When owners wait too long, they often encounter data gaps, processing delays, or system errors that cannot be fixed in time. Missing the May 1 date can trigger a $500 fine, and that fine repeats every quarter ($2,000 per year total). Once May 1 passes, the next compliance checkpoints (with penalties) are August 1, November 1, and February 1.
How to fix it: Start today. Pull together all 2025 bills for gas, electricity, heating oil or steam, and water. Enter the data into Portfolio Manager this month – well before any rush. Share your portfolio with NYC at least two weeks before the deadline so you can catch errors. On-time filing avoids fines and gives you breathing room to fix any mistakes.
Mistake 3: Incomplete or Inaccurate Data
Benchmarking is not as simple as plugging in a handful of numbers. Owners often leave out tenant meters, forget common areas, or enter estimated usage when bills are missing. Others mix up gross square footage or building use type. For example, if tenants pay their own gas bills, you still must aggregate those meters into the whole-building total. Forgetting water usage is another pitfall: if your building is marked to report water (usually a “Y” on the Covered Buildings List), you must request DEP consumption data too. Even one omitted meter or wrong figure can invalidate your submission.
How to fix it: Double-check your utility sources. Make sure every fuel type and meter is accounted for. Verify your building’s gross floor area and occupancy type against Department of Finance records. Enter all 12 months of data exactly as billed. When in doubt, enlist an energy consultant or your utility providers to help reconcile totals. Accurate data is key to an accepted submission.
Mistake 4: Forgetting to Share and Confirm
After you enter data in Portfolio Manager, compliance isn’t done until you “share” the property with NYC’s Building Energy Analysis Manager (BEAM) system. Many owners overlook this step or wait too long to certify the report. Portfolio Manager will accept data entry, but unless BEAM receives the share request and confirms it, the City does not count it as filed. This extra step is easy to miss if you’re not familiar with the process.
How to fix it: Once your energy and water data are entered, use the Portfolio Manager “Share” function to send the report to the DOB. Then, immediately log in to DOB NOW or BEAM to accept the shared property. Treat this as an essential part of the filing process, not an optional add-on. Confirm the submission is marked “Complete” in the NYC portal.
Mistake 5: Ignoring Other Deadlines
Focusing only on the May 1 benchmarking deadline is risky. For example, Local Law 97 (buildings’ carbon limits) also has a May 1 deadline for reporting 2025 emissions. LL97 offers a 60-day grace period to file by June 30 (with an optional extension to August 29). But owners who put off either report could face both sets of penalties. Other looming dates include:
- LL33 (Energy Grades): Energy grade labels must be posted by October 1 of each year. First-year grades for most buildings start October 2026.
- LL87 (Energy Audit/Retrocommissioning): Required reports must be filed by December 31 (2026 for this cycle) for certain large buildings.
- LL88 (Lighting & Submetering): Buildings that haven’t yet proved compliance must file a lighting upgrade report by May 1, 2026, with a small filing fee.
- Quarterly Checkpoints: Missing May 1 triggers additional deadlines in August, November, and February (LL84 benchmarks must be caught up each time).
How to fix it: Ignoring any of these will cost you later. Always check the most current service notices from DOB. NYC even provides a “2026 Deadlines for Sustainability Laws” reminder listing all the key dates. The bottom line: don’t silo compliance tasks – treat them as part of a coordinated plan.
Mistake 6: Underestimating Penalties and Complexity
Some owners assume, “It’s just data – what’s the worst that can happen?” The answer: surprisingly large fines. Missing the LL84 deadline costs $500 each quarter, and worst-case $2,000 per building per year. LL97 non-compliance can mean $268 per ton of excess carbon emissions (which adds up fast for a large building). Even if direct fines aren’t spelled out for things like LL33 or LL88, violations can lead to city orders and extra fees. Time spent fixing mistakes after the fact multiplies labor costs. On top of that, if your building scores poorly in benchmarking or emissions, you might face future costs to implement efficiency upgrades. It’s far cheaper to avoid violations upfront.
How to fix it: Reframe these filings as part of budget planning, not optional tasks. Factor in compliance costs early. Use the benchmarking process to identify energy inefficiencies that could be fixed, saving fuel money. If penalties still happen, know they accumulate quarterly; aim to catch up well before the next cutoff.
Mistake 7: Handling Compliance Solo (When You Need Help)
Finally, many owners try to manage all these filings alone, only to get overwhelmed. NYC’s compliance system involves several online portals (Portfolio Manager, BEAM, DOB NOW), data aggregation, and sometimes professional certifications. Mistakes in this maze can easily slip through. For multi-tenant buildings or owners with multiple properties, juggling each requirement is daunting without expertise.
How to fix it: Don’t hesitate to get support. Consider hiring a compliance consultant or engineer experienced with NYC’s laws. A qualified professional can audit your data, fill out forms correctly, and even negotiate extensions if truly needed. They can also advise on corrective steps like upgrading insulation, boilers, or lighting, which can reduce your consumption and emissions scores. Remember, NYC offers help too: the Mayor’s NYC Accelerator program provides free advice on LL97 and energy efficiency. Pairing up with experts early is a smart move, not an admission of failure.
Compliance Quick-Checklist
To recap, here are concrete steps to take now:
- Verify Coverage: Check the latest Covered Buildings Lists for LL84, LL97, LL88 and see if your properties appear.
- Gather Data: Collect all utility bills and meter records for 2025. Work from billing dates to ensure no month is missed.
- Enter and Share Data: Input fuel and water usage into ENERGY STAR Portfolio Manager accurately. Share the property with NYC’s BEAM system at least 15 business days before May 1.
- File Other Reports: If required, prepare your LL97 emissions report (via BEAM) and LL88 lighting attestation for May 1. Post your LL33 energy grade label by early October. Plan for any LL87 audit filings by year-end.
- Don’t Miss Resubmissions: If you miss May 1, immediately compile your data to meet the next deadline (Aug 1) and pay the necessary fine for May. Keep moving until the report is accepted.
- Plan Upgrades: Use your benchmarking results to identify high energy use. Even small efficiency fixes (like LED lighting or pipe insulation) can lower bills and future emissions. Schedule any needed upgrades in the offseason so you’re ready for next year.
- Consult Professionals: If any step feels unclear, contact a building compliance advisor, architect, or engineer. Early advice can prevent big headaches and costs later.
Act Now to Stay Ahead
Time is short but not too late. Pull your team together and go line-by-line through this checklist. The earlier you file, the fewer questions the city will have, and the sooner you can put this behind you. Missing the May 1 deadline won’t just cost a fine – it risks disrupting your budget and operations for months.
Immediate action pays off. If you haven’t already, reach out to your building management team or hire an energy compliance specialist today. They can review your status under each law, help compile and submit required data, and plan any necessary upgrades or corrections. By starting now, you’ll turn “last-minute panic” into “ahead-of-schedule achievement.” Protect your building from unnecessary expense and keep it running efficiently – start your compliance review this week.
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