Local Law 157: Gas alarm rules for NYC buildings

If you’re on a condo or co-op board in New York City, you may have heard about Local Law 157—a new rule requiring natural gas alarms in certain residential buildings. This law was put in place to improve safety after several gas-related accidents in the city. While the deadline for compliance isn’t until May 1, 2025, board members should start planning now to avoid last-minute costs or penalties.

Here’s what you need to know to keep your building compliant and your residents safe.

What is Local Law 157?

Local Law 157 requires residential buildings—including condos, co-ops, and rental properties—to install natural gas detectors in common areas and any unit that is subleased. The goal is to prevent gas leaks from turning into dangerous, even deadly, incidents. Owner-occupied units are not required to have these alarms under this law.

Key requirements and deadlines

• Natural gas alarms must be installed near gas appliances (within 3–10 feet) and close to the ceiling (within 1 foot).
• Devices must meet NFPA 715 standards (National Fire Protection Association’s new safety guidelines).
• Applies to common areas and subleased units, not owner-occupied units.
• Deadline for compliance: May 1, 2025.

What should board members do now?

Check what’s already installed

Does your building already have natural gas alarms in required areas? If so, are they compliant with NFPA 715 standards? If not, you’ll need to upgrade.

Plan your installation

Work with your property management company, superintendent, or a trusted vendor to map out a plan for installing alarms. This could include:

• Budgeting for installation costs
• Choosing a vendor to install compliant alarms
• Deciding if the building or subleasing residents will cover costs

Educate residents

Board members should let residents know what’s happening and why. Consider sending out a building-wide notice explaining:

• What Local Law 157 requires
• Where alarms will be installed
• How it improves safety for everyone

What happens if you don’t comply?

Buildings that fail to meet the deadline could face fines or violations. While the city hasn’t finalized penalty details yet, it’s always safer (and cheaper) to comply early rather than risk non-compliance.

Final thoughts: Safety first

Local Law 157 is about more than just following regulations—it’s about ensuring people feel, and are, safe in their homes. Early detection of gas leaks can prevent serious emergencies, giving residents peace of mind. Daisy's here to help boards maintain compliance and keep buildings safe.

By taking action now, board members can avoid last-minute stress and make the compliance process smoother.

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