CO alarms are required in many building types: Single- and two-family homes at point of sale or transfer (effective June 1996) All new residential construction (effective April 2003) New and existing commercial buildings (effective February 2016)

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Smoke alarms are generally required in residential settings. Hard-wired smoke alarms are required in all new construction. 10-year sealed battery alarms are required in existing single-, double- and multi-family dwellings that were constructed prior to the state’s adoption of the Uniform Construction Code Act of 1975. Effective date: January 1, 2019

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