ADU rules in Chattanooga, TN — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Chattanooga's zoning code addresses accessory dwelling units. ADUs may be permitted in certain residential zones with conditions including size limits.
Chattanooga's zoning code (Chapter 38) allows accessory dwelling units in certain residential zones. ADUs must be subordinate to the primary dwelling and meet building code standards. A building permit is required. Tennessee does not have a statewide ADU mandate, so local zoning controls apply. Chattanooga has been updating its zoning to accommodate ADUs as part of housing affordability efforts. Contact the Regional Planning Agency for current ADU allowances.
Building an unpermitted ADU results in fines and required compliance.
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See how Chattanooga's adu rules rules stack up against other locations.
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