Statewide, Wis. Stat. 101.145 requires working smoke detectors in the basement, at each stairway head on every floor, and in or near each sleeping area of every home and rental unit. Owners install them; occupants maintain them and must report failures in writing.
Wisconsin's smoke-detector law applies across Rock County. Under Wis. Stat. 101.145(4), the owner must install and maintain a functional smoke detector in the basement, at the head of any stairway on each floor level, and either in each sleeping area or within 6 feet of it (not in a kitchen). Owners install per manufacturer directions and maintain common-area detectors. Occupants maintain the detectors inside their own unit, but if a non-owner tenant gives written notice that a detector is not working, the owner must make it functional within 5 days. New construction also carries carbon-monoxide requirements under the Uniform Dwelling Code (SPS 321).
Enforced by local building inspectors and fire officials; failure to provide required detectors can bring code-violation citations and liability. Landlords who ignore written repair notices violate state law.
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See how Janesville's smoke detectors rules stack up against other locations.
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