New York Local Law 152 requires a visual inspection of all gas piping systems of all buildings other than those classified as R-3 occupancy (a one- or two-family dwelling, for instance) must be inspected at least every four years by a licensed master plumber. 

An exception for newer buildings, where its initial inspection would take place in the 10th year, after a letter of completion, a Certificate of Occupancy, or the date the building was completed as determined by the Department of Building.

3.12.1. Schedule

Inspections cannot be conducted more than 60 days before the official due date. Inspections will be due every four years on the anniversary of the last inspection. For example, if your first inspection was on January 1, 2021, your next due date would be January 1, 2025. You would not be able to perform the inspection more than 60 days prior to January 1, 2025.

To determine your Community District you can check your district profile HERE.

Cycles for the Community Districts are:

  • Community Districts 1, 3, and 10 in all boroughs: January 1, 2020 – December 31, 2020

  • Community Districts 2, 5, 7, 13, and 18 in all boroughs: January 1, 2021 – December 31, 2021

  • Community Districts 4, 6, 8, 9, and 16 in all boroughs: January 1, 2022 – December 31, 2022

  • Community Districts 11, 12, 14, 15, and 17 in all boroughs: January 1, 2023 – December 31, 2023


3.12.2. Inspection

All exposed gas lines from point of entry into the building, including building service meters, and exposed lines in common areas shall be inspected for evidence of excessive corrosion or deterioration that has resulted in a dangerous condition, illegal connections, and non-code compliant installations.

The plumber will use a Portable Gas Leak Detector to test gas lines in: 

  • Public Spaces
  • Hallways
  • Corridors
  • Mechanical and Boiler Rooms
  • Gas Utilization Equipment

If the inspection uncovers such conditions as a gas leak or evidence of illegal gas line connections, the inspector has to notify the building owner, the utility company, and the Buildings Department about those findings. The building owner then should take immediate action to fix those issues in compliance with the city’s construction codes.


3.12.3. Filing

Within 30 days of the inspection, the licensed master plumber must provide the building owner a Gas Piping System Periodic Inspection Report showing the results of the inspection. To file, the licensed master plumber has to complete the GPS1 Form for building records and the Inspection Certification within 60 

A certification from the master plumber must be filed with the Buildings Department to indicate that the inspection was completed. Additionally, the inspection report also has to be submitted to the utility company within 90 days of the inspection. Inspection reports and certifications must be kept on file by the inspector and the building owner for eight years and made available to the Buildings Department upon request.

Your Building does not have a Gas Pipe System 

Buildings without a gas piping systems will still have to file a Certification from a registered design professional, stating the building contains no gas piping system. Certification will need to be filed every 4 years according to the properties Community District inspection cycle.

The inspection resulted in Corrective Action

If the Inspection Certification submitted to the Department indicates that conditions requiring correction were identified in the Gas Piping System Periodic Inspection Report which the plumber provided to the owner; then, the owner must submit to the Department, within 120 days of the inspection, an Inspection Certification signed and sealed by the licensed master plumber who conducted the inspection, stating that the conditions have been corrected.

If the Inspection Certification submitted to the Department indicated that additional time was needed to correct the condition(s) identified in the Inspection Report, the owner must submit, within 180 days of the inspection, an Inspection Certification signed and sealed by a licensed master plumber stating that all conditions have been corrected.