New York, NY Building Safety: Carbon Monoxide Detectors (2026)

2(a) requires every dwelling unit in occupancy groups J-1 (multiple dwellings), J-2 or J-3 with a fossil fuel-burning furnace or boiler, and every dwelling unit near a carbon monoxide source as defined by rule, to carry an operational, approved carbon monoxide detecting device, with at least one device installed within fifteen feet of each room lawfully used for sleeping. The combo unit can double as a smoke detector if it also meets the Title 27 smoke-detector standards. Subdivision (b) extends the mandate to occupancy group G (general business/professional) and group H-2 buildings, requiring at least one approved device per building.

Subdivision (c) covers occupancy groups F-1, F-3 and F-4 (mercantile and storage uses), again at least one device per building, installed and maintained under commissioner rules issued with the fire department and DOHMH. 1 defines "fossil fuel" as coal, kerosene, oil, wood, fuel gases and other petroleum products, and "fuel gases" to include methane, natural gas, liquefied natural gas and manufactured fuel gases, so the trigger for a dwelling-unit device is any furnace or boiler burning one of those fuels, not just natural gas. Subdivision (d) makes the article retroactive: every covered building must comply regardless of construction date or when its certificate of occupancy was issued, so older pre-code buildings are not grandfathered out.

3 requires that every device be of a type authorized by commissioner rule, mirroring the smoke-detector listing requirement in § 27-981. Subdivision (e) gives four agencies concurrent enforcement authority: the Department of Buildings, the Fire Department, the Department of Health and Mental Hygiene, and the Department of Housing Preservation and Development, meaning a violation can be issued by whichever agency inspects the building.