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South Carolina zoning: how it works and what you can build
South Carolina's 1975 Home Rule Act gave both municipalities and counties independent zoning power, so unincorporated growth corridors around Charleston, Columbia, and Greenville are typically zoned directly by county government rather than left unregulated.
How zoning works in South Carolina
South Carolina's Home Rule Act of 1975, implementing Article VIII of the state constitution, restructured local government statewide and, notably, extended independent zoning authority to counties as well as municipalities. Before 1975, South Carolina counties had little independent governing power; since then, counties have become full land-use regulators in their own right, particularly important given how much of the state's growth (around Charleston, Columbia, Greenville, and Myrtle Beach) is happening just outside incorporated city limits.
Both municipal and county zoning power flows from the South Carolina Local Government Comprehensive Planning Enabling Act of 1994. That act requires any jurisdiction that wants to zone to first adopt a comprehensive plan covering statutorily defined elements (population, housing, land use, transportation, and priority investment, among others) before it can enact or substantively amend a zoning ordinance.
South Carolina has no statewide ADU mandate or missing-middle preemption. An Accessory Dwelling Unit Affordable Housing Incentive Act and an SC Inclusionary Housing Act have both been introduced in recent legislative sessions but had not been enacted as of mid-2026, so ADU and density policy remains fully local; existing law does let larger municipalities (over 50,000 population) and counties voluntarily adopt inclusionary housing policies.
Because both counties and cities zone independently under the same 1994 act, a parcel just outside a city limit is typically still zoned by the county rather than unregulated. Several jurisdictions, including the City of Columbia, have consolidated zoning and subdivision rules into a single Unified Development Ordinance (UDO), and Greenville County is doing the same as of the mid-2020s.
Who holds the zoning power
Land-use authority in South Carolina is delegated by statute, not assumed — these are the acts a zoning ordinance in South Carolina has to trace back to.
- South Carolina Local Government Comprehensive Planning Enabling Act of 1994 S.C. Code Ann. Title 6, Chapter 29
- Requires an adopted comprehensive plan before a jurisdiction can zone, and governs the zoning and land-development process for both municipalities and counties.
- Home Rule Act S.C. Code Ann. Title 4, Chapter 9 (implementing S.C. Const. Art. VIII)
- Established modern county government in South Carolina and gave counties independent zoning authority alongside municipalities.
Major cities and their codes
The enabling act sets the ceiling; the municipal code is what a project is actually reviewed against. The 6 largest South Carolina jurisdictions and the codes they administer:
| City | Zoning code |
|---|---|
| Columbia | City of Columbia Unified Development Ordinance, Chapter 17 of the Code of Ordinances Adopted 2019; merged zoning and subdivision regulations into a single UDO. |
| Charleston | Zoning Ordinance of the City of Charleston Separate from Charleston County's own Zoning and Land Development Regulations Ordinance covering unincorporated areas. |
| North Charleston | North Charleston Zoning Ordinance Industrial and port-adjacent land uses coexist with significant recent residential infill. |
| Mount Pleasant | Mount Pleasant Zoning Ordinance Fast-growing Charleston-area suburb with active growth-management overlay districts. |
| Rock Hill | Rock Hill Zoning Ordinance Charlotte-metro spillover growth driving recent mixed-use and transit-corridor rezonings. |
| Greenville | City of Greenville Zoning & Development Code Greenville County is separately consolidating its own zoning and land-development rules into a countywide UDO. |
Parcel & GIS data
South Carolina parcel and zoning GIS data is maintained at the county level through individual county GIS and assessor offices; statewide resources such as SCDNR's open-data GIS hub cover natural resources but there is no single authoritative statewide parcel viewer, so feasibility work typically requires pulling data county by county.
Parcel-level feasibility in South Carolina waits on that data being ingested and the ordinances encoded — the waitlist below is what sets the order.
Zoning by city
The statute sets who may zone; the city's own code sets what you can build. One guide per South Carolina city below, explaining the district codes that appear on its zoning map — 84 district codes across South Carolina so far.
South Carolina zoning — common questions
- Can South Carolina counties zone unincorporated land?
- Yes. Under the 1975 Home Rule Act, South Carolina counties, not just municipalities, have independent authority to adopt zoning ordinances for unincorporated areas, so land outside a city's limits in a growing county is typically still subject to county zoning rather than being unregulated.
- Does South Carolina allow accessory dwelling units (ADUs) by right?
- There is no statewide ADU law in South Carolina as of 2026; an Accessory Dwelling Unit Affordable Housing Incentive Act has been introduced in the legislature but not enacted. Whether ADUs are allowed, and under what size and setback limits, is set entirely by the zoning ordinance of the specific city or county covering the parcel.
- What has to happen before a South Carolina jurisdiction can adopt or change its zoning?
- Under the Local Government Comprehensive Planning Enabling Act of 1994 (S.C. Code Title 6, Chapter 29), a municipality or county must first adopt, and periodically update, a comprehensive plan covering required elements like land use, housing, and transportation before it can enact or substantively amend a zoning ordinance.
- How is zoning different between the City of Charleston and Charleston County?
- They are two separate zoning authorities: the City of Charleston administers its own Zoning Ordinance inside city limits, while Charleston County administers a separate Zoning and Land Development Regulations Ordinance for unincorporated areas. A parcel's applicable code depends on whether it has been annexed into the city, so developers should confirm jurisdiction before assuming which code applies.
Keep reading
Want to see the finished shape of this work? Illinois is live at parcel level — Illinois zoning and the 53-district Chicago reference.
South Carolina zoning summaries on this page are provided for information, not legal advice. Confirm every project against the current adopted code for the jurisdiction and the statute as amended.