Deadlines for Filing Year 2026
For LL97, LL84, LL33, LL87 and LL88
As a specialized energy consulting firm, we provide the latest updates and resources to help building owners stay ahead of NYC compliance deadlines. Below are the essential datelines for extension requests and submitting compliance reports for 2026.
For Filing Extensions and Submitting Compliance Reports
| Month/Day | Report/Request |
| 3/31/2026 | LL87 Deadline (2025 Filing Year) |
| 5/1/206 – 6/30/2026 | Local Law 97 Standard Reporting Period |
| 5/1/2026 | LL97 Filing Deadline |
| 5/1/2026 | LL88 Filing Deadline (if full compliance not yet filed) |
| 5/1/2026 | LL84 Deadline |
| 6/30/2026 | LL97 Filing Deadline Grace Period (Deadline to apply for an extension) |
| 6/30/2026 – 8/29/2026 | Local Law 97 Extension Period |
| 8/1/2026 | 2nd Quarter LL84 Deadline |
| 8/29/2026 – 2/1/2027 | Local Law 84 Ongoing Reporting Period |
| 10/1/2026 | LL33 E-Grade Labels available on DOB Now |
| 10/31/2026 | Deadline to post LL33 E-Grade Labels |
| 11/1/2026 | 3rd Quarter LL84 Deadline |
| 12/31/2026 | LL87 Filing Deadline (2026 Filing Year) |
| 2/1/2027 | 4th Quarter LL84 Deadline |