Local Law 152 NYC: Cycle Deadlines by Community District

Local Law 152 of 2016 requires periodic inspections of exposed gas piping in nearly every NYC building with gas service. The inspection cadence is once every four years, and the year your building is due is determined by its community district — not its borough, address, or owner.

The NYC Department of Buildings groups all 18 community-district numbers into four sub-cycles. Each sub-cycle is one calendar year inside the four-year window. Sub-cycle A runs first, then B, C, and D — and then the cycle starts over.

We are currently in Cycle 2. Cycle 2 began with Sub-cycle A in 2024 and ends with Sub-cycle D in 2027. Cycle 3 begins in 2028.

This is the master reference. Find your building's community-district number on the left, and the column on the right is your drop-dead GPS2 filing deadline.

Sub-cycle	Community Districts	GPS2 Filing Deadline
A	1, 3, 10	December 31, 2024 (passed)
B	2, 5, 7, 13, 18	December 31, 2025 (passed)
C	4, 6, 8, 9, 16	December 31, 2026
D	11, 12, 14, 15, 17	December 31, 2027

The same CD number maps across all five boroughs. Brooklyn CD 4 (Bushwick), Manhattan CD 4 (Hell's Kitchen / Chelsea), Queens CD 4 (Elmhurst / Corona), and the Bronx CD 4 (Concourse) are all in Sub-cycle C. If you have a Manhattan building in CD 8 (Upper East Side) and a Brooklyn building in CD 8 (Crown Heights North / Prospect Heights), both are due this December.

A few specifics worth flagging:

• The deadline is the GPS2 filing, not the inspection itself. The inspection has to happen first, and you have 60 days from inspection day to file the GPS2 through DOB NOW.
• Buildings with no gas piping still have to file. The DOB requires a one-time Certification of No Gas Piping to confirm the building has no gas system.
• Three-family residential buildings are subject to LL152 but face a lower penalty schedule. One- and two-family homes (Occupancy Group R-3) are exempt.

Most owners don't know their CD off the top of their head. Two minutes on a city tool fixes that.

• NYC Department of City Planning's Community Profiles map — type your building address, and the map returns the borough plus the CD number. This is the authoritative source.
• NYC.gov's LL152 FAQs page — links the same lookup and confirms the sub-cycle assignment.

If you own multiple buildings, run the lookup on every one. We've seen owners assume two adjacent buildings share a CD because they're on the same block, then find out one is in Sub-cycle C and one is in Sub-cycle D and miss a deadline by a year.

If your building falls in Community Districts 4, 6, 8, 9, or 16, you are in Sub-cycle C. The GPS2 deadline is December 31, 2026 — less than eight months from today.

Here is the realistic timeline if you start the process this week:

• May–June 2026: Hire a Licensed Master Plumber (LMP). Confirm their NYC license is active. Schedule the inspection for summer.
• July–September 2026: Inspection happens. The LMP must give the DOB at least 2 business days' advance notice under the rules effective January 3, 2026.
• September–October 2026: If unsafe conditions are found in the GPS1 report, you have 120 to 180 days to correct them with a Licensed Master Plumber.
• October–December 2026: GPS2 certification is filed through DOB NOW within 60 days of the inspection. Filing fee is $35.

If October arrives and you have not booked an LMP, file for the 180-day extension ($35) before December 31. The extension is not automatic — you have to request it through DOB NOW: Safety. Missing the deadline without an extension on file produces a Notice of Violation, and the DOB began issuing those formally in January 2026 for buildings that missed Sub-cycle A.

The DOB amended the rules through a rulemaking effective January 3, 2026. Three changes matter for every sub-cycle from this year forward:

• Commercial tenant spaces are now in scope. Storefronts, restaurants, and other commercial units with gas lines must be inspected — not just common areas and exposed piping in public spaces. Coordinate access with tenants well before the LMP shows up.
• Advance notification is mandatory. The LMP must notify the DOB at least 2 business days before the inspection. Same-day or one-day inspections no longer satisfy the rule.
• Filing fees are now itemized. GPS2 filing is $35. Extension requests are $35. A Certification of No Gas Piping is $375. Documentation for buildings with piping but no active gas service is $480.

These rules apply to Sub-cycle C buildings filing in 2026 and to Sub-cycle D buildings filing in 2027 — and they will carry forward into Cycle 3.

After two sub-cycles of LL152 enforcement across NYC small buildings, the same mistakes repeat. They map cleanly to where in the timeline owners are:

• Pre-inspection: Assuming a building is exempt because gas only feeds a central boiler (it isn't), or because the building disconnected one tenant's gas service (the piping still has to be inspected).
• During inspection: Booking a general contractor or non-LMP plumber. Only a Licensed Master Plumber — or a registered journeyman under LMP supervision — can perform the inspection.
• Post-inspection: Missing the 60-day GPS2 filing window after inspection day. Owners frequently assume the LMP files the GPS2 automatically; the LMP files it but the owner must sign it.
• Mid-cycle: Forgetting that a 180-day extension still requires a formal filing and a $35 fee before the original deadline. An extension request submitted on January 2 is too late.

The most expensive Local Law 152 mistake we see in our book of business isn't the inspection — it's owners trying to book a Licensed Master Plumber in November when their Sub-cycle C deadline hits December 31. By Q4, plumbers are booked solid, the 60-day GPS2 filing window collapses, and a $35 filing turns into a $5,000 violation that follows the building into its next refinance.

Cycle 2's Sub-cycle D wraps up December 31, 2027. Cycle 3 begins immediately — Sub-cycle A buildings (CDs 1, 3, 10) face their next GPS2 deadline December 31, 2028, four years after their last one.

Two operational implications for owners and boards:

• Sub-cycle A buildings have already been through one full cycle. If you own in Manhattan CD 1 (Financial District / Tribeca), Manhattan CD 3 (Lower East Side), or Brooklyn CD 3 (Bedford-Stuyvesant), pull your prior GPS1 report from your records. Recurring conditions — old galvanized risers, a particular branch line that flagged twice — should be on a capital plan, not a 2028 surprise.
• Sub-cycle D buildings (CDs 11, 12, 14, 15, 17) get the longest runway. That is not a reason to wait. Coordinate the inspection with any planned facade work, riser replacement, or Local Law 11 cycle so vendor mobilization and tenant access can be combined.

For a fuller picture of how LL152 fits into the rest of the year's NYC compliance workload, see our NYC Compliance Checklist for Small Building Owners. If you also have cooling towers, the new monthly testing requirement under Local Law 159 overlaps the same Q4 vendor crunch. And if your Sub-cycle C deadline is the priority right now, our Local Law 152 deadline-and-penalties guide covers the fine schedule and DOB enforcement details in depth.