ADUs are allowed in Unincorporated FlorenceTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Florence, SC
Is your property eligible for an ADU?
# of Properties
11
Zoning districts
33
Zoning Districts:
45,162 parcels · 33 districts
NZ
73%(32,846)
R-1
8%(3,730)
R-2
6%(2,606)
RU-1
3%(1,174)
Other
11%(4,806)
ADU Rules
What can you build in Unincorporated Florence, SC?
Unincorporated Florence, SC follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum size of 50% of the principal dwelling’s gross floor area for an internal (in-home) accessory apartment; no minimum size.
Detached ADU Size Limits
- –Maximum detached ADU size is 50% of the principal dwelling’s gross floor area.
- –In residential districts, the detached ADU also counts toward the combined accessory-structure cap: 2,000 sq ft (≤1 acre), 3,000 sq ft (>1–<2 acres), 4,000 sq ft (2–<4 acres), or 6,000 sq ft (≥4 acres).
- –In residential districts, no single accessory structure (including a detached ADU) may exceed the principal dwelling’s gross floor area.
- –In non-residential or other districts, accessory buildings (including a detached ADU) together may occupy no more than 30% of lot area; this is an upper cap for any one ADU.
Max Units
- –1 ADU per single-family lot (attached or detached); 0 ADUs for duplex or multifamily lots; JADUs: none specified.
Owner Occupancy
- –The principal dwelling must be owner occupied.
Parking
- –1 space/ADU; Townhouse/Mixed-Use districts: null; otherwise a third space is required; parking on the same lot as the principal use.
Rental Restrictions
- –Detached ADU in R-1/R-2 may be used only for an immediate family member needing assisted living for a limited period; renting to the general public is prohibited.
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 South Carolina municipalities
Rules change at the town line. Check the municipality your property is actually in.
Florence County