Are ADUs legal in Alpharetta?

An accessory dwelling unit's legality on a specific Alpharetta property comes down to that parcel's zoning designation, since Georgia leaves ADU rules to each city rather than setting one statewide standard. Some zoning categories may permit one by right, others require a variance, and lot size and setbacks both factor into the answer. Confirm the zoning for a specific address with Alpharetta's planning department before assuming either a yes or a no applies to your property.