Can I add an ADU to my Roswell or Sandy Springs home in 2026?

Adding an accessory dwelling unit to a Roswell or Sandy Springs home in 2026 comes down to that specific property's zoning designation, since Georgia leaves those rules to each city rather than one statewide standard, and the two cities don't necessarily treat the same lot type the same way. Lot size, setbacks and whether the parcel already has an accessory structure all factor into the answer. Confirm zoning with Roswell's or Sandy Springs' planning department for the exact address in question.