Garage conversion rules in Allen County, IN — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
The Allen County Zoning Ordinance has no separate garage-conversion permit. Converting a garage into living space or a second unit changes its use, so it must meet the district's dwelling and ADU standards (an integrated accessory dwelling unit must be at least 300 square feet) and needs an Improvement Location
In unincorporated Allen County a garage is a residential accessory structure. Turning it into habitable rooms, a home occupation, or a rental unit changes the structure's use and triggers zoning review by the Fort Wayne-Allen County Department of Planning Services. If the conversion creates a dwelling, it is treated as an accessory dwelling unit: only one ADU per lot is allowed, and an integrated ADU must be at least 300 square feet. The work must also comply with the Indiana building code, and any lost off-street parking may need to be replaced. An Improvement Location Permit and building permits apply.
Converting a garage into living space without the required Improvement Location Permit or building permits is a code violation; Planning Services can order the work halted or reversed and levy fines.
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