ADUs are allowed in RoswellTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Roswell, GA
Is your property eligible for an ADU?
# of Properties
30,843
Owner-occupied
82%
Zoning districts
44
Avg Home Value
$623,312
Median Lot Size
0.39 acres
Avg Income
$153,291
Residential Types:
30,843 housing units
Single Family
93%
2-3 Family
1%
Apts (4+ units)
1%
Other
5%
Zoning Districts:
32,871 parcels · 44 districts
RS-18
22%(7,277)
PRD
19%(6,198)
RS-30
11%(3,495)
R-TH
10%(3,379)
Other
38%(12,522)
ADU Rules
What can you build in Roswell, GA?
Roswell, 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 less than 50% of the heated floor area of the entire dwelling (principal plus accessory).
Detached ADU Size Limits
- –Maximum conditioned space for a detached ADU by district: 1,000 sf (AG-43, RS-87, RS-30); 700 sf (RS-18, RS-12); 500 sf (DR-, DX-, DH-, NX-, CX-, PV-, CC-, CH-).
Owner Occupancy
- –Owner must occupy either the principal or ADU as residence.
Parking
- –1 space/ADU; no max. On-street may substitute for required on-site parking if directly abutting the property (1:1 credit). Off-site parking allowed within 800 ft under remote parking rules. Tandem parking allowed if both spaces are assigned to the same dwelling unit and cannot count for guest parking.
Rental Restrictions
- –Owner-occupied unit may not be rented at any time; temporary absences of less than one year may be waived after two years.
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.
Fulton County