Connecticut Smoke and Carbon Monoxide Detector Disclosure

Effective October 1, 2025, Connecticut law prohibits the sale, offer, and distribution of smoke detectors that are powered only by replaceable batteries, unless they are sealed, nonremovable, and designed to last at least 10 years. This ban does not apply to hardwired smoke detectors, fire alarm systems connected to panels, combination systems, or devices that use low-power radio frequency signals. The goal of this law is to improve home safety by ensuring that smoke detection devices remain reliable over time.

In addition, Connecticut updated its rules for home sales to require sellers to certify that working smoke and carbon monoxide detectors are installed in required locations. Sellers must sign a sworn affidavit, notarized or witnessed by an attorney, confirming compliance based on the home’s age, power source, and detector placement. This affidavit is typically signed at closing, and this notice is provided only to inform sellers of their future obligation. No affidavit or additional documentation is required to be uploaded with a listing at this time.

Where Can I Learn More?

You can read the text of the law provided by the Connecticut General Assembly HERE.

How Can I Get a Copy of the "Connecticut Smoke and Carbon Monoxide Detector Disclosure"?

No separate form is required for this disclosure at the time of listing. The affidavit is provided and signed at closing. We will provide you a copy of any Connecticut disclosure form for free upon submitting a flat fee MLS listing through our website. We charge a low, one-time flat fee to list your home on the MLS.

Return to Connecticut Real Estate Disclosure Requirements