Industrial and commercial noise in New York County is governed by NYC Admin Code 24-218, which sets strict dBA limits at residential property lines and requires noise mitigation plans for citable operations.
Manhattan has limited heavy industry compared to the outer boroughs, but commercial kitchens, printing operations, rooftop mechanical systems, garage ventilation fans, delivery docks, and 24 hour service facilities all qualify as citable noise sources under NYC Admin Code 24-218 and 24-232. The code requires that commercial noise not exceed 7 dBA above ambient background at any residential property line during nighttime hours, or 10 dBA above ambient during the day. Refrigeration units on bodegas and supermarkets, rooftop chillers on office buildings, and restaurant exhaust fans are the top sources of citations issued by the NYC Department of Environmental Protection. DEP officers conduct sound level measurements with Type 1 meters and issue Notices of Violation through the Office of Administrative Trials and Hearings (OATH). Commercial operators must often submit a Noise Mitigation Plan demonstrating how they will remediate the source, typically by installing mufflers, acoustic enclosures, or vibration isolators. Civil penalties for commercial violations run from 440 to 8,000 dollars per incident and can include stop work orders for persistent violators.
Contact your local code enforcement office for specific penalty information.
See how New York County's industrial noise rules stack up against other locations.
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