ADU Regulations in Georgia (GA)
Georgia is rated Moderate for ADU construction with an ADU-friendliness score of 30/100 (Restrictive). Georgia does not have a statewide ADU law — regulations are set entirely by local jurisdictions. Owner must reside on the property. Additional parking may be required. Georgia has no statewide ADU law, but Atlanta and several metro-area cities have adopted local ADU ordinances. Atlanta significantly expanded ADU permissions in 2019 and has seen strong ADU growth. Most rural areas do not regulate ADUs specifically.
Full ADU Regulations Summary for Georgia
| ADUs Allowed | Yes |
| Statewide ADU Law | No |
| Maximum ADU Size | Set locally |
| Owner Occupancy Required | Yes |
| Parking Required | Yes |
| Minimum Setback | Set locally |
| Permitting Timeline | Varies by jurisdiction |
| Impact Fees | Varies by jurisdiction |
| Long-Term Rental Allowed | Yes |
| Short-Term Rental (Airbnb) Allowed | Yes |
| Ease of Building | Moderate |
ADU Regulations by City in Georgia
ADU rules can vary by city even within the same state. Without a statewide ADU law, Georgia cities set their own rules, and policies can differ significantly. Below are ADU details for 3 cities in Georgia.
Atlanta
ADUs allowed by right on single-family lots since 2019. Up to 750 sq ft or 50% of main home. Owner occupancy required. No additional parking required.
Savannah
ADUs (called 'carriage houses') permitted in historic and some residential zones. Design review may apply.
Decatur
ADUs allowed on single-family lots. Maximum 800 sq ft. Decatur has been a leader in ADU adoption in metro Atlanta.
How Georgia Compares to Other States
Below is a comparison of Georgia with five states that have similar ADU-friendliness scores. This comparison helps illustrate where Georgia stands nationally.
| State | Score | Statewide Law | Parking Req? | Owner Occ? | Ease |
|---|---|---|---|---|---|
| Georgia (GA) | 30 | No | Yes | Yes | Moderate |
| Alabama (AL) | 30 | No | Yes | Yes | Difficult |
| Arkansas (AR) | 30 | No | Yes | Yes | Difficult |
| Delaware (DE) | 30 | No | Yes | Yes | Moderate |
| Idaho (ID) | 30 | No | Yes | Yes | Moderate |
| Illinois (IL) | 30 | No | Yes | Yes | Moderate |
Frequently Asked Questions About ADUs in Georgia
Can I build an ADU in Georgia?
Yes, ADUs are allowed in Georgia. However, Georgia does not have a statewide ADU law, so the specific rules depend on your city or county's zoning code. Some cities are more permissive than others. The ease of building is rated "Moderate" with a friendliness score of 30/100.
Do I need to live on the property to have an ADU in Georgia?
Yes, Georgia generally requires owner occupancy — the property owner must live either in the main house or the ADU. This means you cannot rent out both units simultaneously. Note: individual cities may have their own owner-occupancy rules, so check your local zoning.
How big can an ADU be in Georgia?
Georgia does not set a statewide maximum ADU size — this is determined by your local jurisdiction. Common local limits range from 600 to 1,200 square feet. Check your city's zoning code for the specific maximum.
Do I need extra parking for an ADU in Georgia?
Georgia may require additional off-street parking for ADUs. The specific number of spaces depends on your local jurisdiction. This can be a significant barrier if your lot has limited space for parking.
Can I rent out my ADU in Georgia?
Yes, long-term rentals of ADUs are allowed in Georgia. Short-term rentals (like Airbnb) are also generally permitted, though your city may have separate short-term rental regulations.
How long does it take to get an ADU permit in Georgia?
The permitting timeline in Georgia is: Varies by jurisdiction. Without a statewide mandate, permitting timelines depend entirely on your local jurisdiction's review process. Actual timelines can be affected by plan review backlogs, inspection scheduling, and the complexity of your project. Pre-approved ADU plans, where available, can significantly speed up the process.
Check ADU Rules for Your City
Use our ADU regulations lookup tool to find the specific rules for your city in Georgia, or browse all 50 states to compare ADU regulations across the country. Remember that local rules may be more specific than state-level regulations.