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

Yes. Lancaster County Building Services issues permits for residential and commercial new construction and renovations, reviews plans before issuing permits, and inspects permitted work during construction^1,9. The county building-permit ordinance covers construction, alteration, renovation, relocation and demolition in unincorporated Lancaster County, but not land inside an incorporated municipality that enforces its own building permit ordinance, and ordinary repairs such as repainting or like-for-like window replacement are excluded¹. Lancaster County has adopted the 2021 International Residential Code with South Carolina modifications². The next statewide code edition takes effect for local jurisdictions in 2027¹⁰. A successful final inspection is required before the county issues a Certificate of Occupancy, and furniture or other use of the house must wait until that inspection⁶. An owner may serve as the unlicensed builder of a qualifying owner-occupied family home, but must personally appear and sign the application, supervise construction, use licensed trades where required, record notice, and comply with zoning and code; rental property does not qualify⁶.

Lancaster County Building Services, at 101 N Main Street in Lancaster, handles building permits, plan review, and inspections⁹. Call 803-285-1969, email permits@lancastercountysc.gov, or use the county permitting portal⁹. The county targets residential plan review within 5 to 7 business days⁹. A residential zoning permit costs $50 and covers a new home, mobile or modular home, storage building, pool, addition, sign, or detached structure¹¹. Lancaster County Planning handles rezoning and subdivision matters; applicants for a major subdivision must meet with Planning staff before filing a preliminary plat application^12,13. Manufactured or mobile homes need a county set-up permit and proof of septic suitability where applicable¹⁴.

Yes. Lancaster County administers its Unified Development Ordinance and enforces zoning and land-development rules³. Lot size, width, setbacks, and coverage depend on the parcel's zoning district and utility service¹⁵. For example, Low Density Residential lots have a 29,040-square-foot minimum area, while septic-served development in the cited district table has a 130-foot lot-width standard¹⁵. Principal front setbacks range from 10 to 50 feet by district, and required pervious surface is 45% in Low and Medium Density Residential districts and 24% in the listed business districts¹⁵. Overlays and use-specific standards may add requirements, so confirm the parcel's district with the Zoning Office^3,15. The same office administers the Heath Springs and Kershaw ordinances³.

SCDES, not Lancaster County, handles onsite wastewater permits⁴. A new home or manufactured home on land without public or community sewer needs SCDES approval and a permit to install before Lancaster County can issue the building permit⁴. A Permit to Construct remains valid for 5 years⁴. After installation, an SCDES inspector returns to inspect the system; SCDES issues approval to operate when the installation meets state standards¹⁶. Only about 42.4% of Lancaster County soils are rated without severe limits for a conventional drain field, so obtain the site evaluation before committing to a house location or purchase¹⁷. For a septic-served home, the county requires the completed, signed septic permit before authorizing power or gas service⁶. SCDES separately requires a Notice of Intent before drilling a residential or irrigation well⁷.

We could not confirm a complete Lancaster County rule for living in an RV on private land or occupying a tiny home. Ask the Zoning Office at 803-416-9777 whether the parcel allows the proposed unit and temporary occupancy during construction³. Manufactured homes have specific rules in the AR, RR, and MH districts: they require a permanent foundation, compliant tie-downs, utilities or approved septic and well service, and specified exterior completion before final inspection⁸. Lancaster County does not permit a manufactured home more than 30 years old or a Class C manufactured home in any zoning district⁸. Building Services issues the county set-up permit, and a septic-served site needs the septic permit presented to county staff¹⁴. A tiny home still needs parcel-specific answers from Zoning and Building Services^3,9.

1. Confirm the parcel's jurisdiction, zoning district, minimum lot size, setbacks, and pervious-surface requirement with the Zoning Office^3,15.
2. Confirm subdivision status with Planning^12,13.
3. If public or community sewer is unavailable, secure SCDES site approval and a septic installation permit before applying for the county building permit⁴.
4. Submit the required SCDES notice before drilling a well⁷.
5. Submit plans to Building Services; the county targets residential review within 5 to 7 business days⁹.
6. Use a licensed builder or complete the owner-builder requirements⁶.
7. Schedule county construction inspections and the SCDES septic installation inspection^9,16.
8. Provide the signed septic permit if applicable and obtain the Certificate of Occupancy before using the house⁶.

Check the flood map before closing: development in a Lancaster County floodplain requires a floodplain-development permit, and work in a designated floodway needs certification that it will not increase the 1% base-flood elevation¹⁸. Order the septic evaluation early because only about 42.4% of county soils are rated without severe limits for a conventional drain field¹⁷. About 80.1% of county land has a slope of 15% or less, while about 78.7% is wooded, so inspect the actual homesite for grading and clearing¹⁷. Verify whether the driveway meets a county road or state highway: Public Works handles county-road questions, while SCDOT controls entrances within state-highway rights-of-way^19,20. Ask Planning before dividing land¹³. The effective property-tax rate is about 0.5%, and the median annual property-tax bill is about $1,487¹⁷.