Local Law 157 Natural Gas Detectors 

Local Law 157 of 2016 covers the REQUIRED NATURAL GAS DETECTORS in NYC residential buildings. The DOB has finally approved rules outlining installation and location specifics following the release of NFPA Standard 715 in 2022

Local Law 157 - also known as Local Law 157 of 2016, LL157 and the gas detector law - is a citywide ordinance that requires the mandatory installation of carbon monoxide / smoke detectors and natural gas detectors in New York City residences once an industry standard had been established. It amended the NYC Housing Maintenance Code, which repealed sections 27-2045, 27-2046, 27-2046.1 and 27-2046.2 of the administrative code of the City of New York relating to smoke and carbon monoxide detecting devices. This standard was published in April 2022 as NFPA 715 by the National Fire Protection Association. Read Local Law 157 in its entirety.

Devices must also be periodically replaced upon expiration of its useful life, or if stolen, removed, missing, or rendered inoperable.

Natural gas detecting devices have been grouped together in this new law with some requirements for smoke and carbon monoxide detectors, including the requirement to post or provide a notice. Specifically, the law details that owners must do the following if natural gas detectors are required.

Owners must “provide to at least one adult occupant of such dwelling unit information relating to:

• (i) the risks posed by carbon monoxide poisoning and, if natural gas detecting devices are required to be installed in such dwelling unit by rules promulgated by the commissioner of buildings, the risks posed by natural gas leaks,
• (ii) the testing and maintenance of smoke detecting devices, carbon monoxide detecting devices and, if natural gas detecting devices are required to be installed in such dwelling unit by rules promulgated by the commissioner of buildings, natural gas detecting devices,
• (iii) what to do if such devices alert,
• (iv) the useful life of such devices,
• (v) the owner’s duty to replace such devices pursuant to article 312 of title 28 and
• (vi) the occupant’s duty to maintain and repair such devices that are battery-operated and within such occupant’s dwelling unit and replace any or all such devices within such dwelling unit that are stolen, removed, found missing or rendered inoperable during such occupant’s occupancy of such dwelling unit; provided that the information provided in accordance with this paragraph may include material that is distributed by the manufacturer or material prepared or approved by the department of buildings; except that this paragraph shall not apply to class B multiple dwellings or smoke detecting devices in private dwellings;”

Generally, residential requirements for smoke and carbon monoxide detectors are outlined here by HPD – we’ll let you know if this changes to include natural gas detectors. We’ll also share any sample notices to residents if and when they’re available from the department.

Details On The Final Rule

The rules clarifying requirements were initially proposed in 2023 with a comment period ending in November. Here’s what’s outlined in the final rule, published February 14th, 2024:

Properties Covered By The Rule

• Natural gas alarms must be installed in private dwellings, class A multiple dwellings, and class B multiple dwellings
• These requirements do not apply to buildings that do not have gas piping or gas service
• In private dwellings and class A multiple dwellings, one or more natural gas alarms must be installed in each dwelling on or before May 1, 2025
• In class B multiple dwellings, one of the following must happen on or before May 1, 2025:
  • One or more natural gas alarms must be installed in each dwelling
  • A line-operated zoned natural gas detecting system, designed in accordance with NFPA 715-2023 by a registered design professional, must be installed in all public corridors and public spaces

Single or multiple station alarms, defined in NFPA 715, must meet all of the following requirements:

• The alarm must be manufactured in accordance with NFPA 715-2023, Standard for the Installation of Fuel Gases Detection and Warning Equipment
• Where a fuel-gas burning appliance is installed within a dwelling, the gas alarm must be installed in the same room as the appliance
  • The alarm must be located at least 3 feet, but not more than 10 feet from the appliance, measured horizontally
  • The gas alarm must be installed on either the ceiling, or a wall
    • Where installed on a wall, the alarm must be located not more than 12 inches from the ceiling
    • Exception (created based on feedback to the proposed rule): Where the existing space does not allow for installation at least 3 feet from a fuel-gas-burning appliance, or the manufacturer’s instructions or NFPA 715-2023 require installation in a different location, alarm installations must be placed in accordance with the manufacturer’s or the NFPA 715 location requirements
• The alarm must be labeled with the name of the manufacturer
• The alarm must be listed and labeled with either UL 1484 or UL 2075 as applicable
• The alarm must be kept in good working order

Installation Requirements
These were also impacted by commentary on the proposed rule. Here’s who can install these devices:

• Natural gas alarms must be installed by a New York City Licensed electrical contractor, who obtains all required permits
  • Exception: Natural gas alarms that are powered either by battery or by plug-in AC receptacle may be installed by other than a licensed electrical contractor, including but not limited to the building owner, building maintenance personnel, or the dwelling unit occupant.

What you need to know

New Standards for Installation and Location of Natural Gas Alarms:

• Natural gas alarms must be installed in private dwellings before May 1, 2025. This does not apply to buildings that do not have gas piping or gas service. 
• Requirements for alarms
• Where a fuel-gas-burning appliance is installed within a dwelling, the gas alarm must be installed in the same room as the appliance.
• The alarm must be located at least 3 feet, but not more than 10 feet from the appliance, measured horizontally.
• The gas alarm must be installed on either the ceiling, or a wall. Where installed on a wall, the alarm must be located not more than 12 inches from the ceiling. This does not apply when the manufacturer’s instructions or NFPA 715-2023 require installation in a different location. Alarm installations must be placed in accordance with the manufacturer’s or the NFPA 715 location requirements.
• The alarm must be labeled with the name of the manufacturer
• Natural gas alarms must be installed by a New York City Licensed electrical contractor, who obtains all required permits. 
• Exception: Natural gas alarms that are powered either by battery or by plug-in AC receptacle may be installed by the building owner, building maintenance personnel, or by the dwelling unit occupant.
• The design and installation of natural gas detecting systems and components must be subject to the applicable permit requirements established in the Administrative Code and the New York City Electrical Code.

What is the current status of Local Law 157?

• 2016: NYC Local Law 157 was originally passed.
• April 2022: The standard for the installation and location of Natural Gas Detectors was established by the National Fire Prevention Association as NFPA 715.
• October 19, 2023: The Commissioner of the Department of Buildings published a proposed rule amending Chapter 900 of Title 1 of the Rules of the City of New York by adding a new Section 908-02: Standards for Installation and Location of Natural Gas Alarms.
• November 20, 2023: The hearing for public comment was held on the October 19th amendment.
• February 15, 2024: The Final Rule was published amending Chapter 900 of Title 1 of the Rules of the City of New York by adding a new Section 908-02: Standards for Installation and Location of Natural Gas Alarms.
• May 1, 2025: Compliance is required for all New York City residences.

What properties need to comply with Local Law 157?

• As defined by the Housing Maintenance Code, the properties that must comply with Local Law 157 include private and Class A and B multiple dwellings.
• Private dwellings are permanent dwellings.
• Class A multiple dwellings are one and two-family houses.
• Class B multiple dwellings are transient housing such as hotels, lodging houses, dormitories, etc.

What type of gas detectors comply with Local Law 157?

• The gas detectors that comply with Local Law 157 are natural gas detectors that meet the requirements of NFPA 715-2023, installed within one foot of the ceiling, and no less than three feet or no more than ten feet from each gas appliance.
• The detectors must be labeled UL1484 or UL2075.
• The devices can be hardwired, plugged into a constant power source, or battery-powered by a listed monitored low-power radio wireless system.
• In existing buildings, any of the above are allowed.

What are the natural gas detector installation requirements that comply with Local Law 157?

The natural gas detector installation requirements that comply with Local Law 157 include:

• Hard-wired detectors require installation by a licensed electrician.
• Detectors powered by a battery or a plug in power source require installation by building owners, maintenance personnel, or tenants.
• In the case of kitchens and laundry rooms that don’t have an outlet within a foot of the ceiling and to avoid unsafe and unsightly draped cords, the standard for compliance will likely be battery-powered devices to avoid the disruption and expense of installing a new electrical outlet near the ceiling.
• Monitored sensors that are part of a low-power radio wireless system,deliver near-instant notifications and relay the exact location of the gas leak (this includes the address, apartment number, and the precise locale or appliance within the unit), and allow the building staff to respond quickly and efficiently.
• The results of complying with installation standards are lives saved and potentially avoiding the costly and damaging process of having the building’s gas shut off.
• The final rule was published on February 15, 2024, with detectors to be installed by May 1, 2025.

STATEMENT OF BASIS AND PURPOSE OF RULE

Local Law 157 of 2016 amended the New York City Housing Maintenance Code and the New York City Building Code to require the installation of natural gas detecting devices in residential buildings. It required the Department to promulgate a rule regarding the installation and location of natural gas alarms after an industry standard had been established.

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