DeKalb County, GA Accessory Structures: ADU Owner Occupancy (2026)

The property owner, who shall include titleholders and contract purchasers, must occupy either the principal dwelling unit or the accessory dwelling unit as their residence, and possess a homestead exemption.4.The appearance of the accessory dwelling unit shall be similar to that of the principal residence.5.Only one (1) accessory dwelling unit of any type shall be permitted on a lot.6.Prior to issuance of a building permit for an accessory dwelling unit, an applicant must provide evidence to the director of planning showing that existing or proposed septic tank facilities, as applicable, are adequate to serve both the principal dwelling and the accessory dwelling unit.7.Any detached accessory dwelling unit shall be located in the rear yard.8.A second kitchen facility may be constructed and used within a single-family residence.9.Paved off-street parking shall be provided for one (1) additional vehicle.10.Accessory dwelling units shall not exceed nine hundred (900) square feet of heated floor area and shall not exceed twenty-four (24) feet in height.11.The main entrance shall not face the closest property line. Windows, doors, balconies, porches and decks shall be sited to ensure the privacy of neighbors.12.For parcels located in a designated historic district and individually designated historic structures, the placement of an accessory dwelling unit and its architectural design shall require a certificate of appropriateness from the historic preservation commission.