Local Law 152 Gas Inspections: NYC's Mandatory Schedule, Who Files, and Penalties
9 min read · Updated 2025-01-15
NYC Local Law 152 requires periodic gas piping inspections for most buildings. Learn the inspection cycle by community board district, who can perform inspections, and what to do if defects are found.
LL152 Requirements and Inspection Schedule
What is Local Law 152 of 2016?
Local Law 152 of 2016 requires periodic inspections of gas piping systems in most NYC buildings. The law covers all buildings with gas piping, except one- and two-family homes and buildings with natural gas only for cooking and not connected to a gas distribution main. Inspections must be performed by a licensed master plumber and must cover exposed gas piping from the point of entry to individual appliance connections. The law was enacted following several gas explosion tragedies in NYC buildings.
What is the inspection cycle under LL152?
LL152 inspections are required every four years, staggered by community board district. The schedule is organized into groups: Group 1 (Manhattan CB 1-6, Bronx CB 1-6) due in cycle years ending in 0 and 1; Group 2 (Manhattan CB 7-12, Brooklyn CB 1-6) due in cycle years ending in 2 and 3; Group 3 (Manhattan CB 12, Bronx CB 7-12, Brooklyn CB 7-12) due in cycle years ending in 4 and 5; Group 4 (Queens all CBs, Staten Island all CBs) due in cycle years ending in 6 and 7. Your managing agent or expediter should track which group your buildings fall into.
Who is qualified to perform a LL152 inspection?
Only a licensed master plumber (LMP) in New York City can perform a LL152 gas piping inspection. The LMP must be licensed by the NYC DOB. After completing the inspection, the LMP submits a Gas Piping Systems Periodic Inspection Certification (GPS1 form) through DOB NOW: Build. If the LMP identifies a condition that requires immediate correction, they must notify Con Edison or National Grid to shut off gas service until repairs are made.
What does a LL152 inspection cover?
The inspection covers all exposed gas piping within the building, from the point of entry at the meter to the appliance connections. Inspectors look for improper materials, inadequate support, corrosion, lack of required shutoffs, improper joints, inadequate clearances, and any conditions that violate the NYC Fuel Gas Code. The inspection does not typically include interior piping within walls or concealed spaces unless there are specific indicators of a problem.
What happens if deficiencies are found during a LL152 inspection?
If the LMP finds conditions requiring immediate action (hazardous conditions), they must notify the utility company for a gas shutoff. Non-hazardous deficiencies must be corrected within 120 days of the inspection. After correction, the LMP must file a certification of correction through DOB NOW. If deficiencies are not corrected within 120 days, the DOB must be notified and an extension may be requested — but the conditions must ultimately be remedied.
What are the penalties for not filing a LL152 inspection?
Failure to file the GPS1 inspection certification by the deadline results in a DOB violation, which can lead to an OATH civil penalty of $10,000 for the first violation. Subsequent violations can reach $25,000. Additionally, DOB may flag the property, complicating future permit applications. Given these steep penalties, many building owners hire managing agents or expediters to track LL152 deadlines as part of their compliance calendar.
How do I file the LL152 certification through DOB NOW?
Your licensed master plumber files the GPS1 form through DOB NOW: Build after completing the inspection. You'll need your building's BBL, the date of inspection, the LMP's license number, and the inspection results. If deficiencies were found, the form notes them. If the building passed without deficiencies, the GPS1 serves as the compliance certification. Keep a copy for your records and confirm the filing is reflected in DOB's system.
Does LL152 apply to Con Edison and National Grid gas piping?
LL152 covers the building's internal gas piping system — from the building side of the meter inward. The utility's supply lines and meters are maintained and inspected by the utility company (Con Edison or National Grid) under their own regulatory programs, separate from LL152. If your inspector finds an issue with the meter itself or the service line, contact the utility directly.
What records must I keep for LL152 compliance?
Keep copies of every GPS1 certification filing and any correction documentation. These should be retained for at least eight years (two inspection cycles). In the event of a DOB audit or an incident, you want to be able to demonstrate timely and complete compliance. Many buildings now include LL152 certification copies in their building file alongside boiler, elevator, and facade inspection records.