County Building Permits
Williamsburg County, SC - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Williamsburg County, South Carolina. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
All unincorporated areas of Williamsburg County.
- Department
- County Building Inspection Office (Code Enforcement)
- Address
- Public Service Administration Building, Suite 121, 201 W Main Street, Kingstree, SC 29556
- Phone
- 843-355-9321, ext. 5303
Application Process
- Obtain a Building Permit application from the Code Enforcement Office at 201 W Main Street, Suite 121, Kingstree
- Submit completed application with required documents (building plans, property plat or deed, site plan, flood elevation certificate if applicable)
- County reviews plans for compliance with building codes (2021 IBC and IRC with SC amendments)
- Permit is issued upon approval
- Property owner or licensed contractor may begin construction
Source: County Building Inspection Office (Code Enforcement)
General Requirements
A building permit is required for residential and commercial construction in unincorporated Williamsburg County.
Required Documents
- Detailed building plans prepared by a South Carolina licensed Design Professional (Architect or Engineer)
- Property plat or deed
- Site plan showing property lines and location of structure
- Flood Elevation Certificate for properties in FEMA A or AE flood zones
- Building code
- 2021 International Building Code (IBC 2021) with SC amendments; 2021 International Residential Code (IRC 2021) with SC amendments
- Contractor requirements
- Contractor must be licensed for the full dollar amount of the contract. Specialty contractor license valid only for work up to $5,000.
Work That Does NOT Require a Permit
- Detached residential structures ≤1 story, ≤800 sq ft, roof pitch ≤7/12, non-habitable may be permitted without Design Professional seal (local interpretation may vary)
- Attached residential structures ≤300 sq ft
- Open porch additions with or without roofs
- Deck additions
Important: Professional design exemptions may vary; confirm with Code Enforcement Office before proceeding.
Inspections
How to Schedule
- 843-355-9321, ext. 5303 (phone)
- Scheduling deadline
- Minimum 48-hour advance notice required
Typical inspection sequence: Footing Inspection: all required rebar must be in place with 3 inches clearance from earth. Framing Inspection: must occur prior to any felt or building wrap application.
Additional Resources
- Building code: 2021 International Building Code (IBC 2021) with SC amendments; 2021 International Residential Code (IRC 2021) with SC amendments
- Verify contractor license: SC Contractor's Licensing Board
- Williamsburg County Inspections, Permits & Applications
- Building Codes & Plans Preparation
- Plan Submittal Requirements
- Sequential Listing of Inspection Types
- License lookup guide: South Carolina Contractor License Requirements
- Contract template: South Carolina Homeowner-Contractor Agreement
- South Carolina hub: South Carolina Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the County Building Inspection Office (Code Enforcement) before applying.
Frequently Asked Questions
Williamsburg County Building Permit FAQ
- Do I need a building permit in unincorporated Williamsburg County, SC?
- A building permit is required for residential and commercial construction in unincorporated Williamsburg County.
- How do I apply for a building permit in unincorporated Williamsburg County, SC?
- 1. Obtain a Building Permit application from the Code Enforcement Office at 201 W Main Street, Suite 121, Kingstree 2. Submit completed application with required documents (building plans, property plat or deed, site plan, flood elevation certificate if applicable) 3. County reviews plans for compliance with building codes (2021 IBC and IRC with SC amendments) 4. Permit is issued upon approval 5. Property owner or licensed contractor may begin construction
- What work is exempt from building permits in unincorporated Williamsburg County, SC?
- The following work is generally exempt: Detached residential structures ≤1 story, ≤800 sq ft, roof pitch ≤7/12, non-habitable may be permitted without Design Professional seal (local interpretation may vary); Attached residential structures ≤300 sq ft; Open porch additions with or without roofs; Deck additions. Note: Professional design exemptions may vary; confirm with Code Enforcement Office before proceeding.
- How do I schedule a building inspection in unincorporated Williamsburg County, SC?
- Inspections can be scheduled via: 843-355-9321, ext. 5303. Minimum 48-hour advance notice required.
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