Building permits, zoning and land rules in Clarendon County, South Carolina

In unincorporated Clarendon County, the appropriate permit or approval is required before covered construction, reconstruction, alteration, demolition, changes of use or occupancy⁵. Clarendon County requires zoning certification and a building or manufactured-home permit before erecting a structure or placing, replacing or moving a manufactured home¹. The county has adopted the 2021 International Building Code with South Carolina modifications, effective January 1, 2023, along with other technical codes⁹. Property owners are not exempt from required permits, inspections or fees merely because they do the work themselves⁹. South Carolina has adopted the 2024 editions of its mandatory building codes, but local jurisdictions are not required to enforce them until 2027¹⁰.

Clarendon County Planning and Zoning is also the county Building Department; call 803-435-8672 or use its Cloudpermit account page for applications and inspection scheduling¹. These county building-permit instructions apply to unincorporated land; inside Turbeville, the town issues building permits^3,5. Septic permits in Turbeville remain with SCDES where public or community sewer is unavailable⁴. County zoning certification generally starts with a tax map number or recorded plat; standard building-permit processing is 24 to 48 hours and plan review takes 7 to 14 business days¹. The published county schedule lists $10 for zoning certification, a $50 minimum residential building-permit fee excluding manufactured homes, and $175 for manufactured-home installation; residential building-permit fees rise with estimated construction cost¹¹. Ask the county office for current forms and fees because application materials change and application fees are nonrefundable¹¹.

Clarendon County administers zoning and development controls in the unincorporated area; Manning has its own zoning ordinance and map^1,2. SCDES remains the septic authority in Manning¹². Start with the parcel’s classification on the official county zoning map, maintained by the Planning Department, because permitted uses and dimensional standards vary by district^5,6. County detached-house minimum lots are 10,000 square feet with public water and sewer, 20,000 with only one public service, and 30,000 with a private well and septic system¹³. Front setbacks vary by road class, while district tables govern required yards and impervious coverage¹³. For an ADU, coverage is limited to 15% on lots of at least 4,000 square feet; on smaller single-family lots, combined primary-home and ADU coverage cannot exceed 60%⁵. Nonresidential and multifamily buildings at least 30 feet high need an additional foot of property-line setback for every foot above 30 feet; building heights and areas must also meet adopted fire and building codes¹³.

SCDES, not Clarendon County, issues onsite wastewater permits for property without public or community sewer¹⁴. SCDES site approval and the septic permit must come before the county building permit; a Permit to Construct remains valid for 5 years⁴. Apply through the SCDES ePermitting portal; customer support is available at 1-855-731-2504 or OSWWCentral@des.sc.gov¹⁵. Before a new system is covered, the installer must schedule an SCDES inspection; if the inspector has not arrived within 30 minutes of the appointment, a licensed installer may use the documented self-inspection option⁴. For a manufactured-home setup using an existing system, the county requires a licensed installer's inspection letter no more than 1 year old¹⁴. Only 0.1% of Clarendon County soils are rated without severe limitations for a conventional drain field, so make septic feasibility an early purchase contingency¹⁶.

Clarendon County allows temporary RV occupancy outside approved parks once per calendar year for no more than 30 consecutive days with a Temporary RV Permit; the Planning Director may grant one 30-day extension for good cause⁵. The temporary-RV rule also requires approved sanitation, developed property, applicable setbacks and zoning compliance, and RV placement remains subject to county floodplain requirements⁵. We could not confirm a distinct tiny-home occupancy rule or minimum dwelling floor area in Clarendon County, so ask Planning and Zoning to verify the district's permitted use, setbacks, lot coverage and applicable building code¹. Manufactured homes have separate setup and location rules, including age limits for certain lake-row sites in the Performance Zone¹⁴.

1. Take the tax map number or recorded plat to Planning and Zoning and confirm the district, permitted use, lot size, setbacks and lot-coverage limit^1,13.
2. Confirm public-water and sewer availability: county rules require connection when the respective transmission lines are accessible within 200 feet of any part of the site and capacity is available¹³. For an individual residential or irrigation well, file the state Notice of Intent before construction⁸.
3. If public or community sewer is unavailable, obtain SCDES site approval and a septic permit before the county building permit⁴.
4. Submit zoning certification, plans and the building-permit application to the county office or through Cloudpermit¹.
5. An owner-builder must personally supervise, use licensed trades where required, build for the owner or family, and record the required notice⁷.
6. Schedule inspections and do not conceal electrical wiring or equipment before approval^1,17.
7. Do not occupy the building until electrical, water and sewer service have begun⁹.

Before dividing, selling or buying property in Clarendon County, ask Planning and Zoning whether the intended division and use are allowed¹. Most nonexempt subdivisions must complete county review before lots are sold or the plat recorded; the published schedule lists $150 for sketch-plan review and $400 plus $10 per lot for both preliminary-plan and final-plat review^11,18. For flood-hazard land, ask Planning and Zoning which approval applies: the schedule lists a $300 Flood Hazard Area Permit and a $10 Flood Zone Certificate, but we could not confirm the complete parcel-level floodplain process^1,11. Only 0.1% of county soils are rated without severe limitations for a conventional drain field, so make septic feasibility a purchase contingency¹⁶. A driveway onto a South Carolina state highway needs a state transportation department permit before construction¹⁹. Clarendon County’s median property-tax bill is about $848 a year at an effective rate near 0.6%, while typical home insurance is about $1,584 a year¹⁶.