All states have laws (statutes) that require landlords to install and maintain smoke detectors in leased residential premises (apartments, homes).

Some states such as Iowa, Maine, Massachusetts, Ohio, and Vermont require photoelectric or ionization sensors—at least in new construction. And Oregon requires smoke detectors with a HUSH mechanism that allows the alarm to be silenced or temporarily desensitized for 7 minutes while a known condition such as cooking is causing the alarm to activate.

Most states also require landlords to install and maintain carbon monoxide detectors in leased residential premises. Smoke and carbon monoxide detectors are widely available in the same device.

In New York State, landlords are required by law to install and maintain smoke detectors in residential rental properties. According to New York State Executive Law Section 378, smoke detectors must be installed in each sleeping area and on each story within a dwelling unit, including basements. These detectors must be of a type and installed in a manner consistent with the New York State Uniform Fire Prevention and Building Code. Additionally, New York State law mandates the installation of carbon monoxide detectors in any dwelling unit that has appliances, devices, or systems that may emit carbon monoxide or has an attached garage. The carbon monoxide detectors must also comply with the specifications outlined in the New York State Uniform Fire Prevention and Building Code. Landlords are responsible for the installation and maintenance of these detectors, ensuring they are in working order for new tenants. Tenants are typically responsible for the maintenance of the detectors during their tenancy, including battery replacement, unless the lease specifies otherwise.