Garage conversion rules in Annapolis, MD — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Annapolis allows garage conversions to habitable space with a building permit. Historic District conversions require Historic Preservation Commission review. Conversions that create a separate dwelling unit are treated as ADUs requiring a special exception.
Converting a garage to living space in Annapolis requires a building permit and must meet residential building code requirements (insulation, egress windows, electrical, HVAC). If the conversion creates a separate dwelling unit with its own kitchen and entrance, it is classified as an ADU and requires a special exception through the Zoning Board of Appeals. In the Historic District, garage conversions must obtain HPC approval, particularly for any changes to exterior appearance (windows, doors, siding). Off-street parking replacement requirements apply if the garage provided required parking spaces. The city may require provision of equivalent parking elsewhere on the lot.
Unpermitted conversion: stop-work order and required permits. Unauthorized ADU creation: $500/day until special exception obtained.
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Side-by-side rule comparisons with other cities in Anne Arundel County.
See how other cities in Anne Arundel County handle garage conversions.
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