NYC building compliance deadlines:
every law, one calendar.

The recurring dates are few. Local Law 84 benchmarking is due May 1 every year (NYC Admin Code §28-309.4 (as amended by LL133/2016)), and so is the Local Law 97 emissions report (NYC Admin Code §28-320.3.7; 1 RCNY §103-14(b)). The Local Law 33 energy grade label is issued October 1 and must be displayed within 30 days (NYC Admin Code §28-309.12.3; 1 RCNY §103-06(l)(2)). The Local Law 87 Energy Efficiency Report is due once every ten years, by December 31 of the calendar year whose last digit matches the building's tax block (NYC Admin Code §28-308.4, §28-308.4.1). Local Law 88's lighting and sub-metering deadlines were fixed dates in 2025 (NYC Admin Code §28-310.3, §28-311.3).

One thing to plan around: the extensions DOB issued by service notice in 2025 — benchmarking to June 30, LL97 to December 31, the energy grade to December 31, LL87 to March 31, 2026 — were one-time. DOB has said that in filing year 2026 every report is due on its statutory date and that the 2025 extensions do not apply (DOB Service Notice 2/27/2026). Each law below gets its own table, with recurring and one-time dates marked as such; the last section puts every upcoming date in one chronological list. For the emissions law itself, start with the Local Law 97 guide.

Local Law 84 covers, as the building appears in Department of Finance records, a building that exceeds 25,000 gross square feet, two or more buildings on the same tax lot that together exceed 100,000 sq ft, two or more condominium buildings under one board that together exceed 100,000 sq ft, and city buildings; the single-building threshold was 50,000 sq ft until Local Law 133 of 2016 lowered it (NYC Admin Code §28-309.2 (as amended by LL133/2016); DOB LL84 Benchmarking Law page). The obligation is an annual benchmark in ENERGY STAR Portfolio Manager — the mechanics are in the Local Law 84 guide.

The energy grade rides on benchmarking. Buildings over 25,000 square feet — or two or more buildings on one tax lot, or under one condominium board, that together exceed 100,000 gross square feet — that appear on the NYC Benchmarking Covered Buildings List must post the Building Energy Efficiency Rating Label (NYC Admin Code §28-309.2 (as amended by LL133/2016), §28-309.12; DOB Service Notice 11/25/2025). The grade comes from the ENERGY STAR score: A at 85 or higher, B at 70–84, C at 55–69, D below 55, F where required benchmarking was not submitted, and N where a score is not feasible (NYC Admin Code §28-309.12.1 (as amended by LL95/2019); DOB LL33 Energy Grading page)— so a missed LL84 filing shows up at the front door as an F. The energy grades guide covers the scoring.

Local Law 87 is the one law on this page that does not run annually. It covers buildings greater than 50,000 gross square feet, a tax lot with two or more buildings that together exceed 100,000 sq ft, and two or more condominium buildings that together exceed 100,000 sq ft (NYC Admin Code §28-308.1; DOB LL87 page). Each covered building files an Energy Efficiency Report — an energy audit plus retro-commissioning — once every ten years, between January 1 and December 31 of the calendar year whose last digit matches the last digit of its tax block number (NYC Admin Code §28-308.4, §28-308.4.1 (LL87/2009); DOB LL87 page). What goes into the report is in the Local Law 87 guide.

Local Law 88's dates are one-time and have passed, but the reporting obligation persists until it is met. It covers a building over 25,000 gross square feet, two or more buildings on the same tax lot together over 100,000 sq ft, or condominium buildings under one board together over 100,000 sq ft; the single-building threshold was lowered from 50,000 to 25,000 gross square feet by Local Law 134 of 2016 (§28-310.2, lighting) and Local Law 132 of 2016 (§28-311.2, sub-metering), and LL132 also lowered the covered-tenant-space line from 10,000 to 5,000 gross square feet (NYC Admin Code §28-310.2 (as amended by LL134/2016), §28-311.2 (as amended by LL132/2016); DOB LL88 page). The requirements themselves are in the Local Law 88 guide.

What the rule does not say is a fixed 2027 date for owners still out of compliance: the report penalty simply recurs each year until the report is filed (1 RCNY §103-18(c),(e)).

Local Law 97 covers a building that exceeds 25,000 gross square feet, two or more buildings on the same tax lot that together exceed 50,000 sq ft, and two or more condominium buildings under one board that together exceed 50,000 sq ft, subject to exceptions (NYC Admin Code §28-320.1 (LL97/2019); DOB LL97 Greenhouse Gas Emissions Reductions page). Reports go through the BEAM portal, which opened March 3, 2025; filing, extension and adjustment fees are paid in DOB NOW: Safety and the payment confirmation number is entered in BEAM (DOB Service Notice 3/3/2025). For the CY2024 and CY2025 reports only, an owner could elect the statutory occupancy-group limit (§28-320.3.1, e.g. Group B 0.00846) where it exceeded the ESPM property-type factor (e.g. Office 0.00758), without mixing methods in one report; from the CY2026 report onward the ESPM factors in 1 RCNY §103-14(c)(3) govern (1 RCNY §103-14(c)(3)(ii); DOB Service Notice 2/7/2023; DOB LL97 Buildings Emissions Limits page). The LL97 deadlines guide goes deeper on the cycle, and the calculator estimates a building's exposure against the limits.

Not every building is on the annual cycle. Which article applies is the first question — the Article 320 vs 321 guide walks through it.

The next eighteen months, in order. Recurring dates carry the citation to the standing rule; where DOB has confirmed a specific year's date by notice, that notice is cited too. The 2025 service-notice extensions are not repeated here because DOB has said they do not apply (DOB Service Notice 2/27/2026).

Already passed in filing year 2026: benchmarking and the LL97 report on May 1, 2026; the LL97 60-day grace period and the extension application window on June 30, 2026; the extended LL97 deadline on August 29, 2026; and the LL88 catch-up report on May 1, 2026 (DOB Service Notice 2/27/2026). LL87 filers on the 2025 schedule had until March 31, 2026 (DOB Service Notice 11/25/2025). A missed 2026 benchmark can still be brought current at the quarterly dates below (DOB Benchmarking page; 1 RCNY §103-06(l)(1)).

Two things this list cannot yet show. The 2027 dates rest on the statute and the rules as written; where DOB confirms them by notice, as it did for 2026, that notice will govern. And Local Law 88 has no fixed 2027 date for owners still out of compliance — the report penalty is assessed annually until the report is filed (1 RCNY §103-18(c),(e)).