Local Law 152 applies to most buildings with gas piping in New York City, but there is one significant exemption: one and two family homes classified as Occupancy Group R-3 are generally not required to have the inspection. In a neighborhood built largely of detached and semi-detached houses, that exemption covers a great many Dyker Heights addresses.
It is not a judgment call based on how the building is used. The classification on the certificate of occupancy is what decides it. A house running as three units is not R-3, and a building with a ground floor commercial space is not R-3 either, regardless of how residential the block feels.
If your building is in scope, the deadline matters. Dyker Heights is in Brooklyn Community District 10 with Bay Ridge and Fort Hamilton, on the city’s first sub-cycle. That cycle closed on December 31, 2024, and the Department of Buildings said it would begin issuing violations in January 2026 to owners who had not filed. The next deadline after that is 2028.
The reason to settle the exemption question first is simple. An owner who is exempt should not be buying an inspection, and an owner who is not exempt has been in the enforcement window since the start of this year.
RB Mechanical Plumbing and Heating has been working in New York City since 1983. Third generation, owner operated, licensed master plumbers. Four decades of permits, Department of Buildings filings and violation removals across the five boroughs.
We are based on Staten Island’s south shore, a few minutes over the Verrazzano-Narrows Bridge from Dyker Heights. Close enough to look at a boiler room without making a day of it.
The houses here are a specific kind of work. Much of Dyker Heights was built between the 1920s and the 1950s, with gas service that has been extended and modified many times since: a converted basement, an added kitchen, a replaced boiler. Where a building is in scope, that layered history is exactly what the inspection examines, and it is why the inspector and the plumber doing any repair should be the same licensed master plumber.
The first call is short and it is about classification: how many units, what the certificate of occupancy says, whether there is any commercial space, and whether anything has arrived from the Department of Buildings. That conversation often ends with us telling an owner they have nothing to do.
Where the building is in scope, we schedule the inspection. A licensed master plumber walks the exposed gas piping in the common areas and checks for leaks, corrosion, illegal connections and non-conforming work.
You receive the inspection report within 30 days of the inspection. The certification is filed with the Department of Buildings within 60 days of the inspection date. Since July 27, 2026 all Local Law 152 filings go through DOB NOW: Safety.
If anything needs correcting, you have 120 or 180 days from the inspection date depending on what was found, followed by a correction certification. We do that repair work ourselves.
Ready to get started?
The inspection covers exposed gas piping from the point where the gas service enters the building, through the common areas, up to but not including individual tenant spaces. Boiler rooms, utility and mechanical rooms, basements, hallways, rooftops and shared service areas.
Piping inside a dwelling unit is outside the inspection, and so are gas appliances. On a small Dyker Heights building that leaves a narrow scope, which is part of why the job is usually shorter than owners expect.
Only a Licensed Master Plumber, or a Registered Journeyman Plumber under the direct and continuing supervision of a Licensed Master Plumber who has completed the Department’s approved seven hour Periodic Gas Piping Inspector qualification course, may perform it. That requirement is in the rule, so an inspection by anyone else cannot be filed.
If you want to check your own classification before calling anyone, the certificate of occupancy for your address is the document that answers it, and the Department of Buildings keeps a property search where you can look it up.
If it is a one or two family home classified as Occupancy Group R-3, it is generally exempt. A large share of Dyker Heights falls into that category, which is why this is the first question to settle rather than the last.
What decides it is the classification on the certificate of occupancy, not the way the building is used now. Three units is not R-3. A ground floor storefront with apartments above is not R-3. If either describes your building, assume it is in scope and keep reading.
Dyker Heights is in Brooklyn Community District 10, which sits on the city’s first sub-cycle. The Cycle 2 deadline was December 31, 2024, and the Department of Buildings said it would begin issuing violations in January 2026 to owners with no certification on file.
So a building in scope here is past the deadline, not approaching one. The record stays open until the inspection happens and the certification is filed. The one piece of good news is that CD10’s next deadline is 2028, so closing this out now buys a long clear stretch.
The Department of Buildings keeps a public property search by address where the certificate of occupancy is on file, and the occupancy group is listed on it. For older Dyker Heights houses there may be no modern certificate at all, which is common for buildings put up before 1938.
Where no certificate exists, the practical route is to look at how the building is legally configured and how many dwelling units are recorded. We can usually tell you from a short description of the building, and if it is genuinely unclear we would rather say so than guess.
Findings are graded by severity. An immediately hazardous condition is reported straight away and can result in the utility shutting off gas service until it is fixed. Anything less urgent is listed for correction rather than shutoff.
Where correction is required you have 120 or 180 days from the inspection date, depending on what was found, and a correction certification is filed when the work is done. We hold the licence to do both the inspection and the repair, so it stays with one company.
It can, in two ways. If the conversion changed the number of legal dwelling units, the occupancy classification may have changed with it, which can move a house out of the R-3 exemption and into scope.
Separately, a basement conversion usually means gas piping was extended, and extended piping in a common area is squarely what the inspection looks at. If the conversion was never filed, that is a different problem from Local Law 152 and worth raising with us before an inspector is standing in the basement.
The building owner carries the legal responsibility. The licensed master plumber inspects and delivers the inspection report, and the owner files the certification with the Department of Buildings within 60 days of the inspection date.
Since July 27, 2026 the filing goes through DOB NOW: Safety. We file for the buildings we inspect, so it does not usually land on the owner to do, but the obligation is the owner’s and it is worth knowing where it sits.