Garage conversion rules in Charleston, SC — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Charleston allows garage conversions to living space with a building permit and compliance with zoning and building codes. Converted garages must meet residential building standards for habitable space.
Garage conversions in Charleston require a building permit and must comply with the building code for habitable space, including proper insulation, ventilation, egress windows, ceiling height, and electrical outlets. The conversion must also comply with zoning requirements for parking, as the loss of a garage may create a parking deficit. In the historic district, BAR approval may be needed for exterior changes. The converted space must meet energy code requirements.
Unpermitted conversions face code enforcement, fines, and possible orders to restore the garage or bring the space up to code.
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Side-by-side rule comparisons with other cities in Charleston County.
See how other cities in Charleston County handle garage conversions.
See how Charleston's garage conversions rules stack up against other locations.
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