Accessory Structures in Florence County, SC (2026)
4 rules for unincorporated Florence County, South Carolina.
Verified from official government sources
ADU Rules
Where conditionally permitted, an accessory apartment in unincorporated Florence County cannot exceed 50 percent of the principal home's floor area or hold more than two bedrooms, must share the main house's utility meters, sits on a single-family lot only, and needs a 20-foot setback when detached, per Code Section 30-97.
Accessory Apartment Rules in Florence County
Some RestrictionsFlorence County Code § 30-97
(2)The apartment, whether attached or detached, cannot exceed 50 percent of the gross floor area of the principal dwelling, or contain more than two bedrooms.(3)The apartment must be a complete living space, with kitchen and bathroom facilities separated from the principal unit, utilizing the same gas, electrical, and water meters as the principal dwelling.(4)An accessory apartment may be only ...
ADU Owner Occupancy
Before an accessory apartment can be added in unincorporated Florence County, the principal dwelling must be owner-occupied. Code Section 30-97(1) makes owner occupancy the first condition, and the use is barred outright inside the City of Florence's own residential districts.
ADU Owner-Occupancy Rule, Florence County
Some RestrictionsFlorence County Code § 30-97(1)
Accessory apartments, shall not be permitted as conditional uses in any of the residential zoning districts in the City of Florence. Accessory apartments, where permitted elsewhere as conditional uses, shall meet the following conditions: (1)The principal structure (dwelling) must be owner occupied.
Shed & Carport Rules
In unincorporated Florence County, sheds and dry-storage structures may only sit in the rear yard setback, at least three feet from the property line, under Florence County Code § 30-246(2). Accessory building height cannot exceed 30 feet, and combined accessory floor area is capped by lot size, from 2,000 square feet on lots of one acre or less up to 6,000 square feet on lots of four acres or more.
Florence County Shed Placement and Size Rules
Some RestrictionsFlorence County Code § 30-246(2)
3.The height of accessory buildings shall not exceed 30 feet. ... c.Buildings, sheds, and structures for dry storage; greenhouses. Building sheds and structures for dry storage and greenhouses may be located in rear yard setback areas only, but no closer than three feet to the property line. ... Lot Size (Gross Acres) Accessory Structures/Uses (Gross Floor Area) 1 acre or less 2,000 sf† >1—<2 a...
Tiny Homes
Unincorporated Florence County treats tiny homes as residential structures under the 2021 South Carolina Residential Code, but zoning-wise it only allows them where standard manufactured homes are already permitted. Sec. 30-116 caps their number and placement to the same district rules as manufactured homes, and once more than two sit on one lot, the whole lot must meet the Sec. 30-96 manufactured home park standards.
Tiny Home Rules in Florence County
Some RestrictionsFlorence County Code § 30-116
Tiny homes are residential structures which are defined by the 2021 South Carolina Residential Code. The construction of such structures shall be in accordance with the applicable building code enforced at the time of permitting. ... (1)Tiny homes shall be allowed only in districts where standard designed manufactured homes are permitted to be permanently located.(2)The number of tiny homes and...
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