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 Utah, landlords are required by law to install and maintain smoke detectors in leased residential premises. The Utah Fit Premises Act (Utah Code Ann. § 57-22-4) mandates that rental properties must have smoke detectors installed in accordance with the International Fire Code. Landlords are responsible for ensuring that smoke detectors are operational at the beginning of a tenancy and must repair or replace any non-working detectors. Tenants are responsible for maintaining the smoke detectors during their tenancy, which includes testing and replacing batteries. Regarding carbon monoxide detectors, Utah law (Utah Code Ann. § 57-22-6.5) requires that carbon monoxide detectors be installed in residential rental properties that contain a fuel-burning heater, appliance, or fireplace, or have an attached garage. These detectors must be installed in accordance with the manufacturer's recommendations and applicable building codes. Landlords must ensure the carbon monoxide detectors are in good working order at the commencement of a lease.