Local Law 87 due dates run on a ten-year cycle tied to the last digit of your building’s tax block number, with each Energy Efficiency Report due by December 31 of the matching year. Buildings whose tax block ends in 6 file by December 31, 2026. Buildings on the 2025 cycle received a one-time extension pushing their deadline to March 31, 2026.1NYC Department of Buildings. Deadline to Submit an Energy Efficiency Report Pursuant to Local Law 87 The law is part of New York City’s Greener, Greater Buildings Plan and requires covered properties to complete an energy audit and retro-commissioning every ten years.2NYC.gov. Greener, Greater Buildings Plan – LL87: Energy Audits and Retro-commissioning
The Filing Schedule by Tax Block
The Department of Buildings staggers filings across the decade so the last digit of your tax block number tells you your year. The current cycle:3NYC Department of Buildings. Local Law 87 of 2009: Energy Efficiency Report Deadlines and Filing
- Block ending in 0: due 2020, next due 2030
- Block ending in 1: due 2021, next due 2031
- Block ending in 2: due 2022, next due 2032
- Block ending in 3: due 2023, next due 2033
- Block ending in 4: due 2024, next due 2034
- Block ending in 5: due 2025, next due 2035
- Block ending in 6: due 2026, next due 2036
- Block ending in 7: due 2027, next due 2037
- Block ending in 8: due 2028, next due 2038
- Block ending in 9: due 2029, next due 2039
A building on tax block 1,246 has a last digit of 6, so it files in 2026 and again in 2036. Once that assignment is set, it repeats every ten years.
If you don’t know your tax block number, look it up on the city’s Property Information Portal at propertyinformationportal.nyc.gov. You can search by address, by borough/block/lot, or by condominium number. The number also appears on your property tax bill.
The 2025 Filing Year Extension to March 31, 2026
Buildings on the 2025 cycle have extra time. The Department moved that year’s deadline from December 31, 2025 to March 31, 2026.1NYC Department of Buildings. Deadline to Submit an Energy Efficiency Report Pursuant to Local Law 87 The extension applies only to properties whose tax block ends in 5. It does not shift any other year, so a 2026 filer still faces December 31, 2026.
This one-time reprieve is separate from the formal extension process described below. If your block ends in 5 and you file by March 31, 2026, no application or fee is needed.
Which Buildings the Deadlines Apply To
The deadlines only matter if your property is covered. Three categories fall under Local Law 87:4NYC Department of Buildings. Local Laws of the City of New York – Local Law 87 of 2009
- Any single building larger than 50,000 gross square feet.
- Two or more buildings on the same tax lot that together exceed 100,000 gross square feet.
- Two or more buildings governed by the same condo board that together exceed 100,000 gross square feet.
The main exemption covers Class 1 properties under state Real Property Tax Law, which generally means one- to three-family homes that are not condominiums, and one- to three-family condominiums of three stories or fewer.5NYC Buildings. Local Law 87 Frequently Asked Questions City-owned buildings are not exempt and follow the same schedule as private ones.
When You Can Defer a Filing
Some covered buildings can push a filing past its assigned year. Two situations qualify:6NYC Department of Buildings. Filing for an Energy Efficiency Report Deferral
- New construction less than ten years old at the start of the first compliance year, where all base building systems meet the NYC Energy Conservation Code.
- Substantial rehabilitation certified by a registered design professional within the ten years before the assigned filing year, where base building systems comply with the Energy Conservation Code in effect for new buildings built on or after July 1, 2010, or the code in effect on the date of the rehabilitation, whichever is later.
A separate route exists for LEED-certified buildings. To qualify, the building must have earned LEED for Existing Buildings certification within two years before filing the EER, and must have earned the commissioning analysis and commissioning implementation credits.5NYC Buildings. Local Law 87 Frequently Asked Questions Buildings certified under LEED v4.1 O+M do not qualify, because that version dropped those specific commissioning credits.
Extensions Before the Deadline
If you can’t finish the report in time, you can apply for an extension, but the application must be filed and emailed to the Department of Buildings by October 1 of the year the report is due. The same October 1 cutoff applies in every subsequent year you continue to need more time.7Greener, Greater Buildings Plan. LL87 – How to Comply
Two grounds are accepted: documented good faith efforts to comply that fell short, or financial hardship that prevented the work from being completed.7Greener, Greater Buildings Plan. LL87 – How to Comply Good faith efforts means you actually began the process and can document why it isn’t finished. Not knowing about the requirement isn’t a basis for relief. The application carries a fee, and approval pauses penalties while you complete the work.
Penalties If You Miss the Deadline
Missing your date triggers a Major (Class 2) violation. The first year a building remains out of compliance carries a $3,000 penalty.8New York City Department of Buildings. Energy Audits and Retro Commissioning Violations Each additional year of delinquency adds $5,000.
The fines stack. A building three years past its deadline owes $3,000 plus $5,000 plus $5,000, or $13,000, and the total keeps growing until the report is filed. The violation also appears on the building’s public record, which can surface during property sales, refinancing, and tenant due diligence.
Who Signs the Report
The Energy Efficiency Report itself must be submitted by a Registered Design Professional, meaning a licensed professional engineer or registered architect.9NYC Buildings. Energy Audits and Retro Commissioning The retro-commissioning agent must hold an approved credential such as Certified Building Commissioning Professional, Certified Commissioning Professional, or Existing Building Commissioning Professional.10NYC.gov. Local Law 87 Outreach and Training Qualified professionals get booked out well ahead of December, so if your year is coming up, start the search early.