LL152 due date lookup/Local Law 152 requirements
An LL152 inspection covers exposed gas piping from where gas enters the building up to individual tenant spaces, plus a gas detector check of public areas. It is performed by a licensed master plumber, or by a DOB-registered journeyman under an LMP's direct and continuing supervision. The plumber must notify DOB at least two days before the inspection.
Paste a list of addresses or BBLs and get each building's community district, its sub-cycle, and the dates that lead up to its deadline, read from DOB's own covered-buildings list.
Open the due date lookup§103-10(c) hands the scope to Admin Code §28-318.3.2, which requires that “all exposed gas lines from point of entry of gas piping into a building, including building service meters, up to individual tenant spaces shall be inspected for evidence of excessive atmospheric corrosion or piping deterioration that has resulted in a dangerous condition, illegal connections, and non-code compliant installations”.
Two words in there do a lot of work.
Exposed. Piping inside walls, ceilings and floors is not in scope. The inspector is not opening anything up.
Up to. The scope runs to tenant spaces and stops. It does not go inside them. Owners often expect apartment-by-apartment access and are surprised, and tenants often expect an inspection of their own appliances and do not get one.
There is also a combustible gas detector test of public spaces, hallways, corridors, and mechanical and boiler rooms, to find leaks.
Local Law 142 of 2025 amended the scope text and the instrumentation requirements for leak detection, effective February 2026. DOB's own FAQ page still carries the pre-LL142 wording on tenant spaces, so if you are comparing sources and they disagree, that is likely why.
§103-10(b) allows two categories, and one of them changed recently.
A licensed master plumber. Always has been.
Or an individual working “under the direct and continuing supervision of a licensed master plumber” who, since 10 June 2026, holds a journeyman plumber registration issued by DOB under article 409 of chapter 4 of title 28, and has completed a DOB-acceptable training program of at least seven classroom hours.
That registration requirement is new. It came in with the amendment implementing Local Law 142 of 2025, and it replaced the old arrangement where the master plumber documented and vouched for the individual's experience. If you are comparing quotes, it is reasonable to ask who will actually be on site and whether they are registered.
The training program has to cover regulations on piping safety, properties of natural gas, combustible gas indicators and leak detection, atmospheric corrosion inspection, interior piping leak survey, hands-on gas indicator instruction, jurisdictional and non-jurisdictional piping connections, purging gas piping into and out of service, recognising illegal connections and substandard conditions, reporting and documenting inspections, and the atmospheric corrosion and leak survey procedure.
§103-10(a)(6): the inspection entity “must notify the Department of the performance of a gas piping system inspection”, and the notice goes in “at least two (2) days prior to the performance of” the inspection.
Two things everyone gets wrong here.
First, the rule says days. Not business days. A lot of trade guidance, including pages published by plumbing firms, says two business days. That is an addition, not a reading.
Second, the duty sits on the inspection entity, which means the plumber. Not the owner. Vendor copy routinely tells owners to notify DOB. They do not have to.
The notification is new with the January 2026 amendment and there is no fee for it. DOB's public owner-facing guidance page does not mention it at all, which is probably why it is so widely misdescribed.
§103-10(d)(1)(ii) sets out what the inspection report must contain for each system inspected:
§103-10(e) does not wait for paperwork. If the inspection reveals a condition described in §28-318.3.4, the inspection entity “must immediately notify the building owner, the utility providing gas service to such building, and the Department”, and the owner “must take immediate action to correct such conditions”.
Those conditions are a gas leak, evidence of illegal connections or non-code compliant installations, or a condition that a utility would treat as a class A or imminently dangerous condition.
Immediately means immediately. There is no sixty-day clock on this one, and the utility gets told at the same time you do.
Where conditions requiring correction are found, correction has to be verified and certified on its own timetable, with 120 days for standard conditions and 180 days where more time is needed. That certification is a separate filing with its own $35 fee, and its own extension request, also $35.
Those day counts come from DOB's guidance rather than from the paragraph text we quote elsewhere on this site, so treat them as DOB's stated practice and confirm against your own notice.
Almost every page about Local Law 152 talks about a single deadline. There are two, they are triggered by different things, and missing them costs you different things.
The cycle deadline. Your building has to be inspected by 31 December of its year. §103-10(a)(4) sets the year by community district. §103-10(f) is the civil penalty for not having the certification in by that date: $1,500 for a 3-family building, $5,000 for everything else.
The sixty-day clock. Once the inspection happens, the owner has sixty days from the inspection date to file the certification. §103-10(d)(2). File on day sixty-one and the rule says the filing “will not satisfy the requirement of this paragraph” and “will require a new inspection”. Not a fine. A new inspection, paid for again.
The two interact badly at the end of the year. Sixty days from a 1 December inspection is the end of January, but the penalty under (f) has already attached on 31 December. So the practical window is whichever is shorter. Inspect on 1 December and you have thirty days to file, not sixty. Inspect on the 20th and you have eleven.
This is the single most common way a building that did everything right still ends up with a violation. The plumber came. The work got done. The paperwork sat on someone's desk over the holidays.
Exposed gas piping from the point of entry into the building, including service meters, up to individual tenant spaces, checked for atmospheric corrosion, deterioration causing a dangerous condition, illegal connections and non-code compliant installations. Plus a combustible gas detector check of public spaces, hallways, corridors and mechanical and boiler rooms.
No. The scope runs up to individual tenant spaces and stops there.
A licensed master plumber, or an individual under an LMP's direct and continuing supervision who holds a DOB journeyman plumber registration and has completed a DOB-approved training program of at least seven classroom hours. The registration requirement took effect 10 June 2026.
At least two days, and the notice is submitted by the inspection entity, not the owner. 1 RCNY §103-10(a)(6). The rule says days, not business days.
Your plumber. The rule places the duty on the inspection entity.
They must immediately notify you, your utility and DOB, and you must take immediate action to correct it. §103-10(e).
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