Ohio sets smoke-alarm rules through statewide building codes, not a Montgomery County ordinance. New one- and two-family homes must have interconnected alarms per the Residential Code of Ohio; apartment buildings follow ORC 3781.104.
Montgomery County does not set its own smoke-detector law; requirements come from statewide code. The Residential Code of Ohio (Section 314) requires smoke alarms in each sleeping room, outside each sleeping area, and on every level of new and substantially altered one- and two-family dwellings, with alarms interconnected and equipped with photoelectric technology in the required locations. For existing apartment buildings and condominiums, ORC 3781.104 mandates automatic smoke-detection systems, with taller buildings (over 75 feet) needing full systems. Landlords must maintain working alarms. Local fire departments enforce during inspections and after incidents.
Missing or non-working alarms can fail building and rental inspections, delay occupancy, and expose landlords to code citations and liability. Fire officials may order immediate correction.
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