Boston requires photoelectric smoke detectors and CO alarms on every level and within 10 feet of sleeping areas under 527 CMR 1.00 and Massachusetts General Laws Ch. 148 Section 26F.
Boston enforces the Massachusetts smoke and carbon monoxide alarm code through the Boston Fire Department Fire Prevention Division. On sale or transfer of any one- or two-family home, a Certificate of Compliance (26F inspection) is required. Homes built before 1975 need battery-operated or 10-year sealed lithium photoelectric smoke detectors on every level and outside each sleeping area. Homes built after 1975 need hardwired interconnected units. CO alarms are required within 10 feet of every sleeping area on every level with fossil-fuel appliances or attached garages. STR and lodging units require annual recertification. Fees for a 26F inspection run $50 to $100.
Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact Boston code enforcement directly for current fines, enforcement procedures, and hearing options.
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