By Rachel Sigmund McGinley

Under Local Law 157, all buildings in NYC with natural gas service or gas-burning appliances (like a stove, oven, water heater, or heater) are required to have natural gas detectors — similar to smoke and carbon monoxide alarms — to help protect you from dangerous odourless gas leaks. These detectors are designed to sound an alarm if they sense gas in the air, giving you crucial time to get to safety.

Here’s what you need to know and do:
• Detectors must be installed in every dwelling that has natural gas service — usually in kitchens or the room with gas appliances — and must meet city safety standards.
• Installation should follow the manufacturer’s instructions and relevant building code guidelines so the alarm works correctly. Some battery- or plug-in models can be installed by owners, maintenance staff, or tenants; hard-wired alarms usually require a licensed electrician.
• These devices must be kept in good working order and replaced when they expire, are missing, or stop working.
• The law’s compliance deadline has shifted over time — though originally tied to May 1, 2025, the final enforcement date is now no earlier than January 1, 2027, to give owners and managers more time to install compliant detectors.

In short: make sure your building has natural gas detectors installed and functioning where required, and check with your building management if you do not see them — it is about your safety and meeting NYC’s legal requirements.

Building owners who fail to install the required natural gas detectors by the compliance deadline can be cited by the NYC Department of Buildings (DOB) for violations. These typically lead to civil penalties (fines).

While specific dollar amounts are not yet fully spelt out in publicly available DOB rules, failure to meet the deadline historically results in DOB issuing violations and fines under city code enforcement processes.