2026 NYC Local Law Deadline Calendar: Every Filing, Month by Month

Most NYC owners who miss compliance deadlines miss them because their planning horizon is a quarter, not a year. By the time they realize a filing is due, the qualifying professional is already booked, the documentation isn't ready, and the cure window has 30 days less of slack than they assumed.

This guide is the single annual calendar a NYC property owner can pin to the wall. It maps every major local-law deadline that hits in 2026, organized month by month, with the specific filing required, the qualifying professional you'll need engaged, and the lead time before the deadline when work should begin.

If you take only one thing from this guide, take this: most filings need to be set up 9–18 months before the deadline, not 30 days before. The math behind that is in each section.

Want this calendar tracked automatically per building, with 60/30/7-day reminders before each deadline? Local Law Tracker is the $59.99/yr add-on we built to handle exactly this.

That four-tile summary is the single-pane state of a building's local-law compliance: how many requirements total, how many are compliant, how many fall due in the next 90 days, and how many are past their deadline already. We'll reference what each tile maps to in the calendar below.

01 · JANUARYThe annual notice month

What's due

• LL31 lead paint annual notice — distribute Jan 5 to Feb 15 to every dwelling unit in pre-1960 multifamily Class A buildings
• LL55 indoor allergen notice — distribute alongside LL31 (same window)
• LL62 carbon monoxide annual reminder — distribute alongside LL31 + LL55
• FY26 LL84 benchmarking data collection begins — pull 2025 utility data
• HPD owner registration renewal — annual property registration with HPD

Lead time required

Notices should be drafted in December and printed/staged for distribution by January 5. Owners who wait until January to draft frequently miss the February 15 close.

For the LL31 annual notice in particular, see our LL31 lead paint owner's guide.

02 · FEBRUARYClosing notice windows + LL11 sub-cycle B opens

What's due

• Feb 15 — LL31, LL55, LL62 annual notices distribution must be complete
• Feb 21 — Cycle 9 of FISP officially closes (final filing deadline for buildings still in Cycle 9 windows)
• Feb 21 — FISP Cycle 10 Sub-cycle B opens (block last digit 0, 7, 8, 9; due Feb 21, 2028)
• LL84 data finalization continues

Lead time required

Buildings in FISP Sub-cycle B should have already booked their QEWI by now (in 2025). If not, do it immediately — the QEWI market gets tight by mid-2026 for the 2027 filings.

03 · MARCHEnergy modeling + LL97 ramp-up

What's due

• Engage Registered Design Professional for LL97 BEEC — RDP availability is constrained in April; lock the engagement now
• Engage energy modeler for LL84 + LL97 reconciliation — the two reports must align
• Run preliminary LL97 emissions calculation — identify Period 1 exposure to inform decarbonization decisions
• If LL11 cycle year, schedule QEWI inspection for late spring — drop platforms book quickly

04 · APRILFinal review window before May 1

What's due

• Final LL84 benchmarking data verification — every utility account reconciled
• LL97 BEEC report drafted — RDP review before signature
• Article 320 vs 321 pathway determination for rent-regulated buildings (different penalty schedule)
• Filing fees secured + DOB NOW account confirmed working

Lead time required

April is the rush month. Owners who hit May 1 cleanly start preparation in February. Owners who scramble in late April routinely miss the deadline.

05 · MAY 1The single biggest filing day of the year

What gets filed

• LL84: ENERGY STAR Portfolio Manager export + DOB NOW filing
• LL97: BEEC report through DOB NOW with RDP signature
• Both must reconcile — same calendar year, same square footage, same energy data

For the full LL97 calculation methodology, see our LL97 penalty calculator article.

06 · JUNE–JULYMid-year inspection cycle work

What's happening

• FISP QEWI inspections for Sub-cycle B buildings (typical inspection window)
• LL152 LMP inspections for Cohort 3 buildings (Bronx CD 10, 12; Brooklyn CD 2, 4–7, 9, 12, 14, 17, 18; Queens CD 1, 4, 7, 10)
• Annual indoor allergen + LL31 turnover work continues
• LL87 audit + RCx work for buildings on cycle
• Heat-season equipment service — boilers, water heaters, hot-water risers

Lead time for next year

Owners with FISP Sub-cycle C buildings (filing 2027 deadline; block last digit 1, 2, 3) should be retaining QEWIs now — 18 months ahead of the deadline saves 15–25%.

07 · AUGUSTHidden filing deadlines

What's often forgotten

• LL152 GPS1/GPS2 filings — 60 days from any LMP inspection performed in June
• LL87 EER preparation for buildings filing in December
• SST card audit on any active job site (LL196)
• Tenant turnover XRF testing (LL31) for any vacancies

08 · SEPTEMBEREnergy auditor engagement window

What's due

• Engage Certified Energy Auditor + RCx Agent for any LL87 cycle building (Dec 31 filing requires Q3 fieldwork at the latest)
• LL11 FISP Sub-cycle B reports wrapping up draft phase for buildings inspected in spring
• HVAC seasonal commissioning ahead of heat season

09 · OCTOBEROpen-violation review window

What's recommended

• Pull HPD Online violation report for every covered building
• Pull DOB BIS + DOB NOW reports
• Pull OATH HearWeb for any pending hearings
• Cure any open Class B violations before they age into Class C escalations
• Cure any SWARMP items from prior FISP cycle before they reclassify as Unsafe at next inspection

For the full multi-agency lookup workflow, see our 7-agency lookup guide.

10 · NOVEMBERHeat-season triggers + LL157 push

What's due

• NYC heat season begins Oct 1 — but November is when the cold actually hits and 311 heat complaints spike
• LL62 carbon monoxide detector verification across every unit
• LL157 gas detector procurement & installation (with Jan 1, 2027 deadline approaching, supply chain is tightening)
• Smoke alarm verification across every unit
• Boiler/burner inspection results filed

Why November is critical

The single biggest 311 complaint spike of the year happens between Thanksgiving and the first 20-degree night. Buildings with sloppy heat-season prep see complaint volumes 3–5× their usual baseline. Those complaints become HPD violations within 5–10 days.

11 · DECEMBERYear-end filings + EER deadline

What's due

• Dec 31 — LL87 Energy Efficiency Report due for buildings on cycle this year
• Dec 31 — LL95/33 energy grade postings refreshed
• Year-end HPD violation reconciliation
• Q4 OATH hearing dispositions resolved or appealed
• 2027 calendar drafting — major deadlines: Jan 1, 2027 LL157, Jul 1, 2027 LL32 citywide

12 · LOOKING AHEADThe 2027 deadlines that need 2026 prep

Two universal NYC deadlines hit in 2027. Both require 2026 procurement work to hit cleanly.

Jan 1, 2027 — LL157 universal gas detector deadline

Every dwelling unit with natural gas service must have a UL 1484 or UL 2075 detector installed by this date. Detectors are inexpensive ($25–$60 each); installation labor is the bottleneck. For multifamily portfolios, source detectors and schedule installation through 2026 — supply spikes typically begin in Q4 of the year before any universal NYC deadline.

Jul 1, 2027 — LL32 citywide No. 4 fuel oil ban

Any NYC building burning No. 4 fuel oil for heat or hot water must convert to No. 2 oil, biofuel blend, natural gas, or electric heat. Conversion projects typically take 6–18 months from contract signing. Owners who haven't initiated conversion by mid-2026 are unlikely to hit the deadline cleanly.

Period 2 LL97 caps — January 1, 2030

Three years from now. Caps drop 40–70% depending on occupancy. Major retrofit work has 30–48 month lead times. The 2026–2027 capex planning window is when most NYC asset managers commit to their decarbonization paths.

13 · ACROSS A PORTFOLIOHow the calendar scales

The single-building calendar above is manageable. The same calendar applied across a 10-building portfolio with mixed asset classes is where most compliance programs fail. Each building has its own cohort year (LL152), its own sub-cycle (LL11), its own LL87 cycle position, its own pre-1960 lead-paint exposure, and its own LL97 cap math.

Manual tracking at portfolio scale requires a real spreadsheet, indexed cross-references, and weekly status review. For owners with 5+ buildings, a continuous monitoring platform that surfaces deadlines plus real-time agency portal events is dramatically more reliable.

ViolationWatch tracks every applicable local-law deadline per building automatically, sends 90/30/7-day reminders before each, and surfaces filing events as they hit DOB / HPD / OATH systems within minutes. Run a free check on any address to see current compliance state, or start a 7-day trial.

14 · BOTTOM LINEThe 12-month calendar in one paragraph

January–February is the annual notice window (LL31, LL55, LL62). May 1 is the single biggest filing day (LL84 + LL97 BEEC). Summer is for FISP and LL152 inspections. Q4 is for violation reconciliation, EER filings, and prep for the next year's notice window. Layered on top: LL11 sub-cycle deadlines (rolling), LL152 cohort years (rolling), LL87 cycles (rolling), LL157/LL32/LL97 universal deadlines approaching in 2027–2030. The owners who run a clean calendar do all of the work 6–12 months before the deadline; the owners who scramble in the final 30 days routinely miss filings, pay penalties, and accumulate cured-but-undocumented work that complicates future filings. The calendar above is the workable version.

For the underlying laws and their full mechanics, start at our 2026 NYC local laws master guide. For the ranked penalty schedule, see our most expensive violations guide. For the 10 highest-priority laws to track, see our 10 laws every owner must track.