ADU rules in Atlanta, GA
Yes. An ADU is a dwelling. Every jurisdiction requires a building permit and a final inspection before anyone lives in it.
Rules last checked by a person on October 19, 2026. Guidance only; confirm with Atlanta before you build.
R-4 Single-Family Residential
| ADU allowed | Yes, if the parcel has no more than 2 units including the ADUConfidence: medium |
|---|
Good to know
- Call 811 at least a few days before you dig footings or post holes. Utility locating is free.
- HOA covenants and deed restrictions can be stricter than city rules. Check yours before you build.
- Atlanta's answers are partly verified: fences and decks always need a permit, and new sheds very likely do. Setback distances for accessory buildings haven't been verified; call the Office of Buildings before you build.
Check your lot
Where to apply
- Atlanta Department of City Planning
- Atlanta Zoning Ordinance (Municode)
- Phone: (404) 330-6150
Sources
- 2024 IRC R105.2, Work exempt from permit (text published by the City of Benson, AZ). Checked 2026-10-19.
One-story detached accessory structures, provided that the floor area does not exceed 200 square feet. Fences not over 7 feet high. Decks not exceeding 200 square feet in area, that are not more than 30 inches above grade at any point, are not attached to a…
- 44 CFR 59.1, definition of development (NFIP). Checked 2026-10-19.
Development means any man-made change to improved or unimproved real estate, including but not limited to buildings or other structures...
- 44 CFR 60.3, floodplain management criteria. Checked 2026-10-19.
Require permits for all proposed construction or other development in the community...