Buying, Selling or Renting? Better Know About Maine’s New CO Detector Law

  Beginning November 1, 2009, a new Maine law requires smoke detectors and carbon monoxide detectors in every rental property, and in any residence purchased after that date.


As always, insurance companies will allow Homeowners insurance discounts for smoke detectors and other protective devices.

Detectors Required

    • Must be 120V with battery backup and powered by the building’s electrical system.
    • Plug in units are acceptable, as long as they have a battery backup.
    • Detectors must be in each unit, near bedrooms for apartments or rental homes – even seasonal or occasional rentals.
    • Must be photo-electric type if located within 20′ of a kitchen or bathroom.


Buying a Home?

Buyers (not sellers) must certify that these detectors are in the property in order to close on a purchase & sale agreement. The Maine Dept. of Public Safety is drafting a certification form which will be used for this purpose.

For more information: