CO alarms are required in all newly constructed one- and two-family dwellings and town homes not more than three stories. CO alarms are also required upon initial occupancy or real estate transfer. Effective date: July 2005

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Smoke alarms with sealed 10-year batteries are required in apartment and condominium buildings before before January 1, 1994. Effective date: January 2017

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Photoelectric smoke alarms are required to be installed near bedrooms and on each floor of newly constructed single- and multi-family dwellings. They are also required to be installed before the sale or transfer of existing single-family homes. Effective date: January 2011

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Smoke alarms are generally required in residential settings. Hard-wired smoke alarms are required in all new construction in local jurisdictions that have adopted IRC standards.

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