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§ SC Williamsburg County
County building permits

Unincorporated Williamsburg County

How to apply for a building permit in unincorporated Williamsburg County, South Carolina. Permit authority, application steps, fees, and inspection requirements.

Last verified
April 2026
On this page 5
§ 01

Permit authority

County Building Inspection Office (Code Enforcement)

Street address
Public Service Administration Building, Suite 121, 201 W Main Street, Kingstree, SC 29556
Phone
843-355-9321, ext. 5303
Coverage
All unincorporated areas of Williamsburg County.
Website
Department website
§ 02

When a permit is required

Permit triggers and exempt work for Williamsburg County

A building permit is required for residential and commercial construction in unincorporated Williamsburg County.

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
  • 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)
  • Exempt Attached residential structures ≤300 sq ft
  • Exempt Open porch additions with or without roofs
  • Exempt Deck additions

Note: Professional design exemptions may vary; confirm with Code Enforcement Office before proceeding.

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.

Source: County Building Inspection Office (Code Enforcement) ↗

§ 03

Application process

Application → plan check → issuance → inspection → final

  1. 01
    Obtain a Building Permit application from the Code Enforcement Office at 201 W Main Street, Suite 121, Kingstree
  2. 02
    Submit completed application with required documents (building plans, property plat or deed, site plan, flood elevation certificate if applicable)
  3. 03
    County reviews plans for compliance with building codes (2021 IBC and IRC with SC amendments)
  4. 04
    Permit is issued upon approval
  5. 05
    Property owner or licensed contractor may begin construction

Source: County Building Inspection Office (Code Enforcement) ↗

§ 04

Required inspections

Scheduling and sequence

How to schedule
  • 843-355-9321, ext. 5303 (phone)
Scheduling deadline
Minimum 48-hour advance notice required

Typical 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.

Source: County Building Inspection Office (Code Enforcement) ↗

§ 05

Frequently asked

Common questions about unincorporated Williamsburg County permits

01 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.
02 How do I apply for a building permit in unincorporated Williamsburg County, SC? ▸
To apply for a building permit in unincorporated Williamsburg County, SC, follow these steps: 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
03 What work is exempt from building permits in unincorporated Williamsburg County, SC? ▸
Not all construction work requires a permit 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. When in doubt, confirm with the local building department before starting work.
04 How do I schedule a building inspection in unincorporated Williamsburg County, SC? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Williamsburg County, SC via: 843-355-9321, ext. 5303. Minimum 48-hour advance notice required.
last verified April 2026 source County Building Inspection Office (Code Enforcement) ↗ entry id permits/south-carolina/williamsburg/unincorporated
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Educational reference. Permit rules and fees change — confirm current requirements directly with County Building Inspection Office (Code Enforcement) before applying. Jaspector is not legal advice.

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