ADUs are allowed in DecaturTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Decatur, GA
Is your property eligible for an ADU?
# of Properties
8
Zoning districts
18
Zoning Districts:
8,792 parcels · 18 districts
R-60
58%(5,108)
RS-17
14%(1,266)
C-2
10%(844)
MU
5%(396)
Other
13%(1,178)
ADU Rules
What can you build in Decatur, GA?
Decatur, GA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 800 sq ft
- –Maximum size of 40% of the principal dwelling’s floor area
Detached ADU Size Limits
- –Maximum detached accessory dwelling floor area of 800 sq ft (excluding any garage or ancillary storage).
- –Maximum detached accessory dwelling size of 40% of the principal dwelling’s floor area.
Max Units
- –1 ADU per lot of record.
- –Detached carriage house: 1 unit per lot.
Owner Occupancy
- –Owner must occupy either the principal dwelling or ADU for eight months
Parking
- –1 space/ADU; max 2 spaces/ADU; ADUs subject to Sec. 7.1; no parking reduction for ADUs in a 4-unit walk-up flat; on-street credits may count toward up to 50% of required off-street parking in certain districts.
Rental Restrictions
- –Owner-occupied unit cannot be rented; owner must occupy a unit for at least 8 months per year.
- –Short-term rentals are allowed in ADUs with a permit and STR standards; otherwise STRs are prohibited in accessory structures.
ADU State Law
What can you build in Georgia?
- –Georgia does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Georgia municipalities
Rules change at the town line. Check the municipality your property is actually in.
DeKalb County