ADU Permits: Alpharetta vs Atlanta
How do adu permits rules compare between Alpharetta, GA and Atlanta, GA?
Alpharetta, GA
Fulton County
No data available yet for Alpharetta.
Atlanta, GA
Fulton County
Atlanta permits accessory dwelling units in single-family R-4, R-4A, R-5, and other residential zones following the 2017 ADU ordinance (Ordinance 17-O-1605). ADUs are reviewed administratively (no public hearing) by the Office of Buildings under Code of Ordinances Chapter 16 (Zoning) Section 16-29.
View full Atlanta rules →Key Facts Comparison
| Fact | Alpharetta | Atlanta |
|---|---|---|
| Authority | - | Atlanta Code §16-29; Ord. 17-O-1605 |
| Max Detached | - | 750 sq ft |
| Max Height | - | 25 ft |
| Setback | - | 7 ft side/rear |
| Parking | - | 1 space (waivable transit) |
Highlighted rows indicate differences between cities.
Alpharetta FAQ
No FAQs available.
Atlanta FAQ
Can I build an ADU in Atlanta?
Yes. Atlanta's 2017 ADU ordinance (17-O-1605) permits detached, attached, and interior ADUs in R-4, R-4A, R-5, and select multi-family districts. Detached ADUs are capped at 750 sq ft and 25 ft height, with 7 ft side/rear setbacks.
What permits do I need?
Zoning compliance review from the Office of Zoning and Development, followed by a building permit from the Office of Buildings. Atlanta enforces the 2018 International Residential Code with Georgia amendments.
Is parking required?
One off-street parking space is required, but this can be waived if the property is in a transit-served area or qualifies for other waivers under the Connect Atlanta Plan.
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