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 Massachusetts, landlords are required by law to install and maintain smoke detectors in all leased residential premises. The state mandates the use of both photoelectric and ionization sensors in smoke detectors, particularly in new constructions, to ensure the detection of different types of fires. Additionally, Massachusetts law requires the installation and maintenance of carbon monoxide detectors in residential properties. These regulations are in place to enhance the safety of occupants by providing early warnings in the event of a fire or carbon monoxide presence. It is important for landlords to comply with these requirements to avoid legal penalties and to ensure the safety of their tenants.