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

Unincorporated Beaufort County requires building permits for new construction, substantial improvements, additions and other covered work; post the permit card before starting². The county enforces South Carolina construction codes, including residential, plumbing, mechanical, fuel-gas, electrical and energy codes^2,8. Request county inspections before 3:30 PM the preceding day; additional inspections may be required, and scheduling can slip because of demand or staffing⁹. A qualifying owner-builder must personally sign the application, supervise construction, comply with codes and zoning, use properly licensed or registered help and record the required notice⁷. The exemption is for the owner’s or family’s occupancy, not sale or rental; offering the home for sale or rent within two years creates a presumption that the exemption was misused⁷.

For unincorporated land, contact Beaufort County Building Codes at (843) 255-2065, 100 Ribaut Road, Administrative Building, 2nd Floor, Room 225, Beaufort, SC 29901¹⁰. Hilton Head Island, Port Royal and Yemassee handle their own building permits^11,12,13. Septic permitting remains with SCDES; Yemassee also prohibits new or additional septic tanks where sewer lines are provided^14,15. County building fees depend on valuation, the zoning permit costs $25, and applicable impact fees are due at submission^6,16. Building Codes also registers manufactured homes throughout the county, including municipalities¹⁰.

SCDES evaluates septic sites, issues construction permits, inspects installations and grants approval to operate in Beaufort County¹⁴. Where public or community sewer is unavailable, a home or manufactured home needs SCDES approval before the county can issue a building permit; the application costs $150 and the Permit to Construct is valid for five years⁴. Apply through SCDES ePermitting; a suitable site receives a permit to construct¹⁴. Arrange inspection before covering the system, and obtain approval to operate after compliant installation and required documentation^4,14. Only about 0.5% of county soils are rated without severe limitations for conventional drain fields, making the site evaluation a key purchase check¹⁷. The county zoning checklist requires septic or sewer documentation but does not establish a universal utility-connection mandate⁹. Contact SCDES at (803) 898-3432 or info@des.sc.gov¹⁸. A new individual residential well requires a Notice of Intent before construction and a $70 fee¹⁹.

In unincorporated Beaufort County, shipping containers, travel trailers and RVs cannot be primary or accessory structures in any county zoning district⁵. A tiny home classified as an RV or travel trailer falls within that prohibition; the provision does not settle eligibility for a site-built or modular tiny home⁵. New Manufactured Home Communities require at least 800 square feet of floor area per dwelling, excluding decks, porches, garages and carports²⁰. Those communities require at least 3 acres of site area and 4,000 square feet per lot, with minimum lot dimensions of 40 feet wide and 80 feet deep²⁰. These community standards are not countywide minimums for individual homes²⁰. We could not confirm temporary-camping limits or a complete individual tiny-home rule; ask Planning & Zoning about the proposed design and parcel²¹.

1. Ask Planning & Zoning to identify the parcel’s district, overlays and flood-hazard limits^1,22.
2. Obtain SCDES septic approval where public or community sewer is unavailable; otherwise assemble sewer documentation^4,9.
3. Obtain the county zoning permit with site plans showing setbacks, wastewater documentation and the property address⁹.
4. Submit the building application, contractor and subcontractor licensing information, printed and digital plans, trade plans and energy-compliance documents to Building Codes⁹.
5. Pay building and applicable impact fees at submission; collect the building permit when the county notifies you it is ready^9,16.
6. Post the permit card before work begins, schedule county inspections and arrange septic inspection before covering the system^2,4,9.

Prioritize wastewater feasibility: Beaufort County’s soils generally rate poorly for conventional drain fields, and SCDES approval must precede a county building permit where public or community sewer is unavailable^4,17. Confirm the parcel’s district, lot dimensions and setbacks before selecting a home design^1,23,24,25. In county flood-hazard areas, development requires a building permit before construction, and new structures, including manufactured homes, must be elevated to or above base flood elevation²². South Carolina exempts qualifying farm structures such as barns and sheds from building-code enforcement, but residences and structures attached to residences do not qualify²⁶. For a driveway onto a state highway, confirm access with SCDOT before closing²⁷.