Local Law 152
NYC gas piping inspection requirements for building owners. Understand your obligations, deadlines, and how to stay compliant with periodic gas piping inspections.
What Local Law 152 Requires
Local Law 152 of 2016 requires periodic inspections of gas piping systems in all New York City buildings. Enacted in response to gas-related incidents across the city, the law mandates that building owners have their gas piping inspected by a Licensed Master Plumber (LMP) every four years.
The inspection covers all exposed gas piping from the point of entry into the building to each gas appliance connection. Inspectors check for corrosion, leaks, improper connections, illegal installations, and any conditions that could create a hazard.
After inspection, the LMP must file a GPS-2 certification form with the NYC Department of Buildings, reporting the condition of the gas piping system and any required corrective actions.
Who Must Comply
Local Law 152 applies to all buildings in New York City that have indoor natural gas piping. This includes:
- Residential buildings — Multifamily apartment buildings, condominiums, and co-ops
- Commercial buildings — Office buildings, retail spaces, and mixed-use properties
- Institutional buildings — Schools, hospitals, and government facilities
Exemptions: Buildings classified under occupancy group R-3 (one- and two-family dwellings) are exempt from the periodic inspection requirement. Buildings with no gas service are also not subject to the law.
Inspection Requirements & the GPS-2 Form
The inspection must be performed by a Licensed Master Plumber (LMP) or by an individual under the direct and continuing supervision of an LMP. The inspection scope includes:
- All exposed gas piping from the point of entry to individual appliance connections
- Public spaces, hallways, mechanical rooms, and boiler rooms
- A sampling of at least 50% of occupied apartments/units in residential buildings, or all units if conditions warrant
- Testing for gas leaks using approved leak detection methods
Upon completion, the LMP files a GPS-2 form (Gas Piping System Periodic Inspection Certification) with the DOB through the DOB NOW portal. The certification must be filed within 60 days of the inspection.
If conditions requiring correction are found, the building owner must have repairs completed and submit documentation of the corrective work within 120 days.
Filing Deadlines by Community Board
Local Law 152 deadlines are based on community board districts and follow a rolling four-year cycle. Buildings must be inspected and the GPS-2 certification filed by the deadline for their community board.
- Community Boards 1, 3, 10 — Deadlines fall in the first year of each cycle
- Community Boards 2, 5, 7, 13 — Deadlines fall in the second year of each cycle
- Community Boards 4, 6, 8, 9 — Deadlines fall in the third year of each cycle
- Community Boards 11, 12, 14+ — Deadlines fall in the fourth year of each cycle
Check the DOB website or contact KomplyOS for your specific building's deadline based on its community board district. Missing a deadline triggers automatic violation issuance.
Penalties for Non-Compliance
Failure to comply with Local Law 152 carries significant financial penalties:
- $10,000+ civil penalty for failure to file the required GPS-2 certification by the deadline
- Additional daily penalties for continued non-compliance after the initial violation
- DOB violations that become part of the building's public record and can affect property transactions
- Potential gas shutoff if unsafe conditions are identified and not corrected
- Property liens for unpaid fines associated with non-compliance
Beyond financial penalties, non-compliance exposes building owners to significant liability risk in the event of a gas-related incident.
How KomplyOS Helps
Stop tracking compliance in spreadsheets. KomplyOS automates deadlines, scheduling, and filing so nothing falls through the cracks.
Frequently Asked Questions
Who needs to comply with Local Law 152?
All buildings in New York City with indoor natural gas piping must comply with Local Law 152, except for buildings classified in occupancy group R-3 (one- and two-family dwellings). This includes residential, commercial, and mixed-use buildings.
How often are gas piping inspections required?
Gas piping inspections under Local Law 152 are required every four years. The inspection cycle is based on community board districts, with different districts having different deadline years.
Who can perform a Local Law 152 inspection?
Inspections must be performed by a Licensed Master Plumber (LMP) or an individual working under the direct and continuing supervision of an LMP. The inspector must hold a current, valid license issued by the NYC Department of Buildings.
What is the GPS-2 form?
The GPS-2 (Gas Piping System Periodic Inspection Certification) is the official DOB form that must be filed after completing a Local Law 152 inspection. It certifies that the gas piping system has been inspected and documents any conditions found, including whether the system passed or requires corrective action.
What are the penalties for non-compliance with Local Law 152?
Building owners who fail to comply with Local Law 152 face civil penalties starting at $10,000 for the first violation, with additional daily penalties for continued non-compliance. The DOB can also issue violations that may result in liens on the property and potential gas service shutoff for unsafe conditions.
Related Compliance Guides
LL152 Inspection Costs
How much a Local Law 152 inspection costs and how to budget.
LL152 Deadlines by Community Board
Find your building's inspection deadline and filing schedule.
LL152 Licensed Plumber Requirements
Who can perform inspections and how to verify credentials.
NYC Compliance Calendar
All 2026 NYC building compliance deadlines in one place.
Never Miss a Compliance Deadline
KomplyOS tracks every building compliance requirement across the tri-state area automatically. Contact us to see how much time you save.