Washington CO
CO alarms are required in all dwelling types: Newly constructed one- and two-family dwellings and town homes not more than three stories (effective January 2011) Owner-occupied single-family homes upon sale or transfer (effective July 2011) Existing R-1, R-2 and R-3 occupancies (effective January 2013)
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Smoke alarms are generally required in residential settings. Hard-wired smoke alarms are required in all new construction.
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