Garage conversion rules in Genesee County, MI — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Genesee County has no countywide garage-conversion ordinance. Converting a garage into living space is regulated by your city, village, or township zoning and by the Michigan building/residential code enforced locally. Get a local permit first.
Turning a garage into habitable space triggers zoning review (density, parking, use) and building-code review (egress, insulation, fire separation). In Genesee County these are handled by your municipality under the Michigan Zoning Enabling Act (MCL 125.3101 et seq.), not by the county. Many local ordinances require you to replace lost off-street parking and may treat the new space as a second unit, which can be prohibited in single-family zones. A building permit and inspections through your city or township building department are almost always required.
An unpermitted garage conversion is a local code and zoning violation; enforcement, correction orders, and fines are set by your municipality.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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