Accessory Structures in Marietta, GA (2026)
4 verified accessory structures rules for Marietta, Georgia, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Marietta Zoning Ord. — one ADU permitted per lot, to the rear of the principal structure; 10-ft side setback; 35-ft rear setback for structures over 15 ft high. Owner must occupy principal or accessory unit.
Marietta Accessory Dwelling Unit (ADU) Rules
Some RestrictionsShed Rules
Marietta requires building permits for accessory structures over 120 sq ft. Sheds must comply with zoning setbacks in residential districts. Cannot be used as habitation. Permit through SagesGov.
Marietta Shed & Outbuilding Rules
Some RestrictionsGarage Conversions
Garage conversions to living space in Marietta require a building permit from Development Services. Must comply with residential building code, egress, insulation, electrical, and zoning setback rules.
Marietta Garage Conversion Rules
Some RestrictionsCarport Rules
Marietta Zoning Ordinance Division 708 treats carports as accessory structures: detached carports must sit to the side or rear of the principal building at least 10 feet from side and rear lot lines, may not exceed the height of the principal structure, and their footprint may not exceed 50% of the principal structure's footprint. Attached carports are part of the principal structure and follow the principal-building setbacks. Storage in unenclosed carports is restricted to firewood and city-approved recyclable containers.
Carport Rules in Marietta
Some RestrictionsLooking for Cobb County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Marietta city rules.
Accessory Structures in Cobb County →