As of July 1, 2009, Colorado requires carbon monoxide alarms to be installed in all multi-family units and single-family homes, including mobile and manufactured homes.
If you are planning a purchase, rental turnover, or any project that requires a building permit, such as a major home improvement, appliance replacement, remodel or new construction, a working carbon monoxide detector must be installed within 15 feet of the entrance of all bedrooms. Detectors must be verified at the time of inspection, or final approval on the permit cannot be granted.
Detectors don’t have to be hard-wired; they may be plugged into a non-switched outlet or may be combined with a smoke alarm or home security system.
For common Questions & Answers about Carbon Monoxide Detectors:
http://www.centennialcolorado.com/index.aspx?NID=646