New York Smoke Alarm Law:
Smoke Detectors, Carbon Monoxide Rules and Owner Duties
Ask ten New Yorkers about the rules for smoke detectors, and you get ten answers, most half right. Half right is what ends up in a scope of work. New York State sets a baseline for detectors, New York City layers more on top, and the gap catches property owners every year. Under the newyork smoke alarm law, compliance depends on the building, the work type, and the local authority having jurisdiction.
Key takeaways
- New York requires sealed 10-year battery or hard-wired smoke alarms for new sales and replacements.
- Smoke alarms must be installed inside bedrooms, outside sleeping areas, and on every building level.
- NYC requires an operational smoke detector within 15 feet of every room used for sleeping.
- Carbon monoxide alarms are required in dwellings with fuel-burning appliances, gas systems, or attached garages.
- Property owners install compliant alarms, while tenants must test, maintain, and report faulty devices.
What are the new requirements for smoke detectors in New York?
Since April 1, 2019, battery-powered alarms sold in New York must carry a sealed lithium battery with a minimum battery life of ten years. Smoke detectors with removable batteries are prohibited from sale statewide. For new sales and new installations in New York State, smoke detectors must now be sealed or hard-wired, which kills the oldest failure in fire safety: batteries pulled for a remote, or yanked at 3 a.m. after a chirp is heard down the hall.
The law modernizes detector technology so a dead battery no longer leaves a fire undetected. Ten years of battery life matches the working life of the sensors inside these devices.
This is a sale restriction, not an order for removal. The 2025 New York State Uniform Fire Prevention and Building Code does not require immediate replacement of existing compliant smoke alarms. Once a detector fails a test or passes ten years from manufacture, though, new smoke detectors must comply with current law.
Where smoke detectors must be installed
Required smoke alarms go in the following locations in every dwelling:
Inside each room used for sleeping purposes
Outside each separate sleeping area serving the bedrooms, in the immediate vicinity of that sleeping area
On every level of the building, including basements and cellars
Those same locations apply to single- and two-family homes and to each dwelling unit in a larger building. In a two-family home, both dwellings need smoke alarms installed on every level, not only the unit the owner lives in.
Uninhabitable attics and crawl spaces are generally excluded, though crawl spaces holding gas-fired equipment change the carbon monoxide analysis. Follow manufacturer instructions on installation. Keep detectors off drafty wall sections, away from a bathroom door or kitchen door, and out of the dead-air corner where a ceiling meets a wall. Ceiling installation is preferred; smoke rises.
New construction and gut renovations carry the heavier duty. Smoke alarms must be hard-wired to building power, backed by battery, and interconnected so one audible alarm sounds all the other alarms. Interconnected detectors matter more than people assume. For example, a basement fire that trips only a basement detector does nothing for a sleeping area two floors up.
Do smoke detectors need to be hardwired in NYC?
Not always. New York City law requires smoke alarms and smoke detectors in all residences, but an existing dwelling unit reaches compliance with approved sealed-battery detectors. Hard-wired installation with battery backup and interconnection applies to new construction and substantial alterations.
New York City adds its own placement rule: an operational smoke detector within fifteen feet of every room used for sleeping purposes. That is tighter than the state’s “immediate vicinity” language, and it is the standard enforced in a multiple dwelling. Run a tape measure before committing to a layout.
Installed devices must also be listed. Smoke alarms carry a UL 217 listing and carbon monoxide detectors a UL 2034 listing. Combination smoke and carbon monoxide alarms are common and need both listings.
Is it against the law to not have smoke alarms in your house?
Yes, and the consequences reach past a violation notice. In a multi-dwelling, owners must install and maintain smoke detectors in each dwelling unit, in every common area the code covers, and provide access for inspection. Occupants must comply and provide access when notified. Owners are liable for injuries and death caused by fire code violations, and every apartment needs two means of egress.
Homeowners must comply before renting or selling. Anyone selling property in New York certifies at closing that smoke alarm requirements are met.
Duties split once a tenant moves in. Property owners install and pay for these devices. Occupants must maintain smoke detectors in good repair, test the alarms, and give notice when detectors are lost, stolen, rendered inoperable, or at fault. Owners must repair or replace inoperable alarms upon notice, generally within one year for newly installed devices, and tenants reimburse a small fee for certain replacements. Tenants can request written notice of these rights.
Is it illegal to not have a carbon monoxide detector in NY?
Yes. Amanda’s Law, named for a teenager killed by carbon monoxide from a faulty boiler, requires a carbon monoxide alarm in any dwelling with a fuel-burning appliance, a gas-fired heating system, a gas water heater, or an attached garage. Essentially all residences with a carbon monoxide source must have carbon monoxide detectors installed, regardless of construction date. Later amendments extended carbon monoxide requirements to commercial buildings and restaurants, the piece commercial operators miss most.
A carbon monoxide alarm belongs within fifteen feet of each sleeping area. Place carbon monoxide detectors near the sleeping area rather than beside the gas appliance, because the point is waking a sleeping occupant before the gas reaches him. Carbon monoxide gas is colorless and odorless and gives no warning before symptoms start, so an audible alarm is the only defense. Tenants reimburse landlords a set fee, commonly $25, for each newly installed carbon monoxide alarm, and must maintain it in good repair. Gas dangers do not end there: New York City’s Local Law 157 extended detection to natural gas in most residential buildings with gas service, a rule most owners never budgeted for.
Testing, maintenance and replacement
New York guidance calls for testing smoke alarms twice a year, and clock-change weekends are the easiest anchor. Press the test button on all installed detectors, confirm a full audible response, and log it.
Replace any smoke detector that fails. Removal of a working detector, or removal of its batteries, is a violation in a multiple dwelling and a liability everywhere else. Replace all installed detectors at ten years from the manufacture date printed on the housing, not the installation date. If a building’s detectors have never been inventoried, pull one off the wall and read that date. It tells you whether this is a maintenance visit or a full replacement job.
Salesforce Field Service includes scheduling, dispatching, and mobile tools for technicians, and it tends to appeal to large enterprises that are already deeply invested in the Salesforce ecosystem for sales and customer service. That said, it comes with enterprise-level pricing and a steeper implementation curve, which puts it out of reach for a lot of small and mid-sized field service businesses.
For companies that are not already running on Salesforce, a dedicated field service management platform built specifically for field operations is usually a simpler and more cost-effective path, since it does not require managing a separate CRM layer just to get scheduling and dispatching functionality.
What compliance means for fire protection contractors?
The ten-year rule turns every installation into a scheduled callback with a known expiration. Capture model, listing, locations, and manufacture date at installation, and in year nine you know which customers need new smoke detectors, before a failed inspection tells them.
The obstacle is rarely the law. It is records. Detector history scattered across job folders and a spreadsheet somebody kept until they left. Shops tracking every installed detector turn compliance into recurring revenue.
Codes change. New York State amends the Uniform Code on a regular cycle, New York City maintains separate Fire Code and Housing Maintenance Code provisions, and local authorities can be stricter than the state minimum. Verify against the current published code and your local AHJ before relying on this for a scope of work.