Local Law 152 gas piping inspections: 2026 and 2027 due dates

Who Local Law 152 covers

Local Law 152 of 2016 requires gas piping in all buildings, except one and two family homes and other Occupancy Group R-3 buildings, to be inspected by a Licensed Master Plumber at least once every four years. That is the whole test. If the building has gas piping and is not a one or two family home or another R-3 building, it is in. Age, height, use and ownership do not matter: a six-unit walk-up, a 300-unit co-op, a restaurant with apartments above it and an office tower with a gas boiler are all in the program.

The law is Local Law 152 of 2016. DOB runs it as the Periodic Gas Piping System Inspection program under 1 RCNY 103-10, which is why you will see NYC Local Law 152, the gas piping inspection and the gas line inspection used for the same thing. The inspection looks at the exposed gas piping in the building, from the point of entry through the meters and risers to the appliances, for leaks, corrosion, illegal connections and missing protection. It is a visual and instrument inspection, not a pressure test of the whole system.

The person doing it must be a Licensed Master Plumber. The owner hires the LMP. The LMP signs the certification. The owner files it. A plumber who is not an LMP cannot sign, and an owner cannot self-certify.

Local Law 152 due dates by Community District

The cycle is four years, and the year a building is due depends on the number of its Community District. The number is what counts, not the borough. Community District 4 in Manhattan, Community District 4 in Brooklyn and Community District 4 in Queens are all due in the same year.

Two sub-cycles are open or about to open. Community Districts 4, 6, 8, 9 and 16 in every borough are due between Jan 1 and Dec 31, 2026. Community Districts 11, 12, 14, 15 and 17 in every borough are due between Jan 1 and Dec 31, 2027. The first two rows have already had their deadline in this cycle. Community Districts 1, 3 and 10 in every borough were due in 2024 and are next due Jan 1 to Dec 31, 2028. Community Districts 2, 5, 7, 13 and 18 in every borough were due in 2025 and are next due in 2029.

The window is the calendar year. An owner in a 2026 district can book the inspection in January or December; both are on time. What is not on time is an inspection in the following January, unless an extension was granted first.

How to find your Community District

Community Districts are drawn by the city, not by zip code or neighborhood name, so the only reliable way is to look the address up. The Department of City Planning's Community District Profiles tool takes an address and returns the district number. The DOB gas piping inspections page lists the same district numbers against the due years, so the two together give the answer in under a minute.

A few things trip people up. A building on the edge of two districts belongs to one of them, and the tool gives the right one. A portfolio spread across a borough is usually spread across due years too, so each building needs its own lookup. And the district number repeats in every borough, so an address is needed, not just a number.

The inspection and the report

The inspection produces a signed form, the Gas Piping System Periodic Inspection Certification, and the owner has a filing deadline that starts the day of the inspection. The owner must submit the LMP's signed Gas Piping System Periodic Inspection Certification to DOB within 60 days of the inspection. That filing is what closes the cycle. An inspection that happened on time but was never filed looks to DOB like no inspection at all.

If the LMP finds something, a second deadline starts. If the inspection finds conditions needing correction, a certification that they are fixed is due within 120 days of the inspection, or 180 days where the LMP noted that more time was needed. In practice that means the LMP writes up the conditions, the owner hires a plumber to fix them, which is often the same LMP, and the LMP then signs a second certification saying the work is done. An immediate hazard such as a gas leak is handled separately from the periodic filing.

Both deadlines are counted from the inspection date, not from the end of the due year. An owner who inspects in late December has the same 60 and 120 days as one who inspects in March, and both run into the following year.

The 180-day extension

An owner who cannot get the inspection done inside the due year has one option. An owner who cannot get the inspection done by the deadline may request a one-time 180-day extension through DOB's online portal. The inspection must happen before the extension runs out. The request is made before the deadline, through the portal, and it is granted once per cycle. There is no second extension, and an extension does not change the next due year.

Extensions are common at year end, when plumbers are booked out and buildings that waited cannot get an appointment. The rule is tolerant of that, once. It is not tolerant of an owner who got the extension and still has no inspection when it runs out. Follow-up notice #6 is DOB's statement of how the extension works.

What drives Local Law 152 inspection cost

We do not quote prices. What we can say is what moves the number, because every LMP pricing a gas piping inspection is pricing the same things.

• Meters, risers and appliances. The LMP walks every exposed run. A building with one meter and a boiler is a short visit. A building with a meter per apartment and a stove in each is a long one.
• Access. Piping in apartments means scheduling tenants, and missed appointments mean return visits. Piping in a basement and a meter room can be done in one pass.
• Building size and layout. More floors and more units mean more time. Multiple buildings on one lot are often inspected together.
• What the inspection finds. Corrections are a second job with their own deadline and a second certification. Corrosion, missing supports, unlabeled valves and illegal connections are the usual items.
• Filing. Some LMPs include the DOB NOW filing in the inspection, some charge for it, and some leave it to the owner. Ask which.
• Timing. Year-end demand is real. Districts due in 2026 that book in the first quarter have more choice than the ones that call in November.

The due dates are public, so a plumber who knows which districts are due this year and next can plan the year. The gas piping leads waitlist is for plumbers who want the buildings in those districts that have not yet filed.

Local Law 152 updates in 2026

Two things changed this year. Local Law 142 of 2025 changed parts of the gas piping inspection rules. DOB's follow-up notice #7, issued April 2026, explains the changes and the amendments to 1 RCNY 103-10 and 101-03. The rule amendments are what DOB uses to run the program day to day, so an LMP who filed in 2024 or 2025 should read the notice before filing again. From July 2026, gas piping certifications are submitted in DOB NOW (DOB follow-up notice #8). DOB NOW is the same portal that FISP and boiler filings use, so owners and managers who file under Local Law 11 or the annual boiler inspection will know the account and the process.

The due years in the table above did not change. Districts 4, 6, 8, 9 and 16 are still due in 2026, and 11, 12, 14, 15 and 17 in 2027. When DOB issues a further follow-up notice we will update this guide and the dates in it.

What this means if you do gas work

Local Law 152 is the one NYC compliance program where the customer list is set years in advance. The due year is fixed by district. The districts are public. Every building in a 2026 district that has not filed a certification by the end of the year is a building with a legal deadline, and most of them know it only when the managing agent gets a reminder.

The same is true, on a longer fuse, of the corrections. A certification that lists conditions is a building that has 120 days to get them fixed and signed off. For a plumber that is a dated, public reason to call. The construction leads guide explains why compliance triggers like this one reach contractors earlier than permit data or bid boards.