Local Law 152 mandates regular inspections of gas piping systems in New York City buildings to detect and mitigate potential gas leaks, thereby preventing hazards such as explosions, fires, and carbon monoxide poisoning. This law, which took effect on January 1, 2021, requires that all commercial buildings and residential structures with three or more families undergo inspections every four years. These inspections must be conducted by a Licensed Master Plumber (LMP) or a qualified individual under LMP supervision, tailored to the specific Community District location. Ultimately, the goal is to ensure the safety and integrity of gas lines, protecting building occupants.

2025-2027 Due dates

1/1/2025 - 12/31/2025– Community Districts 2, 5, 7, 13, 18

1/1/2026 - 12/31/2026 – Community Districts 4, 6, 8, 9, 16

1/1/2027 - 12/31/2027 – Community Districts 11, 12, 14, 15, 17

Find Your Community Group Inspections are organized by Community Districts – not boroughs. To locate your community district please visit the NYC.GOV Community Profiles page.

Periodic Local Law Inspections Are Due Every 4 years Initial inspections are scheduled in either 2020, 2021, 2022, or 2023. Your second inspection will be due four years from your initial inspection date. The initial inspections are organized according to your community district (not borough) and have been divided into four groups. See the chart below for the LL152 schedule.

Civil Penalties for non-compliance with Local Law 152

• Building owners that fail to comply with Local Law 152 may be fined up to
$10,000.00 regardless of their building posing unsafe or hazardous conditions. It
definitely pays to stay compliant with local law 152!

For more information on inspections and reporting visit the FAQ section of the DOB’s website.

It covers the most frequently asked questions and provides additional links to more information.

All buildings that are 10 years old or older with three or more family units.
LL152 also applies to all commercial buildings or buildings that have commercial units that
are 10 years or older (regardless of size).

For example, if you have a single-family unit on the second floor, with commercial space below LL152 applies (even though it’s only two units).

Here’s another example: If you have a building, with three separate units, and three separate groups residing in the building, LL152 applies (even if it’s only one floor).

If you’re unsure of your property classification, you can find your building’s occupancy group on the Certificate of Occupancy.

Buildings less than 10 years old are exempt and will need a LL152 inspection 10 years after their first gas permit was issued.