Charleston Zoning & Land Use Guide
Notable local initiatives in Charleston
Named ordinances, statutes, and reforms specific to Charleston — each linked to an official source you can verify directly.
Old and Historic District / Article X of the Charleston Zoning Ordinance(1931)
Adopted in October 1931, Article X of Charleston's zoning ordinance created the Old and Historic District and the Board of Architectural Review (BAR) — the first historic-preservation zoning ordinance in the United States. The BAR still reviews all new construction, alterations visible from the public right-of-way, and demolitions within the district.
Source · charleston-sc.govSection 54-214 — Accessory Dwelling Units(2020)
Charleston's ADU ordinance (Sec. 54-214 of the Zoning Ordinance) permits one ADU per single-family lot, capped at 850 sq ft conditioned floor area. Requires owner-occupancy of either dwelling, one extra on-lot parking space, a recorded Declaration of Covenants and Restrictions, and explicitly disqualifies the lot from Short-Term Rental permits.
Source · charleston-sc.govCharleston City Plan (Comprehensive Plan 2021)(2021)
Adopted by City Council in late 2021, the Charleston City Plan is the comprehensive plan guiding zoning rewrites, affordable-housing strategy (targeting more than 16,000 needed units), and the city's resilience and equity priorities. It is the policy basis for ongoing zoning ordinance amendments.
Source · charleston-sc.govOCRM Critical Line / Waterfront Development Standards
Charleston Zoning Ordinance requires ADUs and other development on parcels containing or abutting an OCRM (Office of Ocean and Coastal Resource Management) Critical Line to comply with additional waterfront development standards in addition to base zoning dimensional rules.
Source · library.municode.comADU Declaration of Covenant (recordable form)
City-published, recordable Declaration of Covenant form that owners must sign and record as a precondition to ADU permit issuance under Sec. 54-214, locking in the owner-occupancy and sublease-prohibition requirements at the deed level.
Source · charleston-sc.gov
Key Zoning Facts
Charleston Zoning Overview
Charleston is a city of approximately 150,227 residents in Charleston County, South Carolina. As one of the state's largest and most historically significant cities, Charleston manages land use through a comprehensive zoning ordinance that balances historic preservation with modern development needs.
Charleston's zoning framework includes estate-lot single-family zones (SR-1, half-acre minimum), standard single-family zones (SR-2, 7,500 sq ft), compact single-family zones (SR-3, 5,000 sq ft), duplex residential (DR), multi-family districts (MF), general business (GB), and light industrial (LI) districts.
Key Zoning Districts
The SR-1 district requires half-acre minimum lots with 25-foot front setbacks, 5-foot side setbacks, and 20-foot rear setbacks. The SR-2 district allows 7,500 sq ft lots with 20-foot front, 5-foot side, and 15-foot rear setbacks. The compact SR-3 district permits 5,000 sq ft lots with reduced setbacks of 15-foot front, 3-foot side, and 10-foot rear. All single-family districts have a 35-foot height limit.
ADU Regulations
Charleston allows accessory dwelling units (ADUs) in residential zones. Because South Carolina has no statewide ADU mandate, Charleston's local zoning ordinance governs ADU development. Property owners should contact the Planning Department for specific requirements regarding size limits, setbacks, parking, owner occupancy, and design standards.
Development Process
Development in Charleston generally requires obtaining the appropriate permits from the city's planning and building departments. The process typically involves:
- Zoning Verification -- Confirm that your proposed use is permitted in the applicable zoning district
- Site Plan Review -- For commercial and multi-family projects, submit a site plan for review
- Historic Review -- Properties in historic districts may require Board of Architectural Review (BAR) approval
- Building Permit -- Apply for a building permit with construction documents
- Inspections -- Schedule required inspections during construction
- Certificate of Occupancy -- Obtain final approval before occupying the structure
For projects that do not conform to existing zoning, property owners may need to seek a variance, special exception, or rezoning through the local board of zoning appeals or planning commission.
Key Considerations
Before starting any development project in Charleston, property owners should:
- Verify the zoning classification of their property
- Review setback, height, and lot coverage requirements
- Check for historic district overlay requirements
- Determine if the property is in a flood zone using FEMA's flood map service
- Confirm whether HOA covenants or deed restrictions apply
- Contact the planning department at (843) 724-3765 for pre-application guidance
Disclaimer: This guide provides general information about zoning in Charleston and should not be relied upon as legal advice. Zoning codes are subject to change. Always verify current regulations with the Charleston Planning Department or municipal code before making development decisions.
Regulatory Layers That Apply in Charleston
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
- Coastal Zone: Yes
- Wetlands: Extensive tidal marshes and OCRM Critical Lines along the peninsula and West Ashley creeks.
State — South Carolina
- Building Code: SC Building Codes Council (IBC/IRC based)
County — Charleston County
- Role: Property records, tax assessment, unincorporated area planning. The city of Charleston spans Charleston, Berkeley, and Dorchester counties.
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
- Old and Historic District / Old City District / Historic Corridor District — Established by Article X of the 1931 Charleston zoning ordinance — the first local historic-district ordinance in the United States. Exterior alterations, demolitions, and new construction require Board of Architectural Review (BAR-L for large projects, BAR-S for small projects) approval.
- Height Districts (B, C, D, E, etc.) — Charleston uses separate height-district designations layered over base zoning, defining maximum building heights independent of the underlying zoning category.
Private Restrictions
- HOA / CC&Rs common: Yes
- HOA CC&Rs are common in West Ashley, James Island, and Daniel Island neighborhoods and may impose stricter requirements than city zoning.
Primary Zoning Districts
- Min Lot
- 1/2 acre
- Max Height
- 35 ft
- Front Setback
- 25 ft
- Side Setback
- 5 ft
- Rear Setback
- 20 ft
- Min Lot
- 7,500 sq ft
- Max Height
- 35 ft
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
- Min Lot
- 5,000 sq ft
- Max Height
- 35 ft
- Front Setback
- 15 ft
- Side Setback
- 3 ft
- Rear Setback
- 10 ft
- Max Height
- 35 ft
- Front Setback
- 15 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
- Max Height
- 45 ft
- Front Setback
- 20 ft
- Side Setback
- 5 ft
- Rear Setback
- 15 ft
- Min Lot
- None
- Max Height
- 45 ft
- Front Setback
- 0 ft
- Side Setback
- 0 ft
- Rear Setback
- 10 ft
- Min Lot
- None
- Max Height
- 45 ft
- Front Setback
- 25 ft
- Side Setback
- 10 ft
- Rear Setback
- 20 ft
ADU Rules in Charleston
- Max Size
- 850 sq ft conditioned floor area (Sec. 54-214)
- Max Height
- Must comply with the dimensional standards of the applicable base zoning district
- Rear Setback
- Per the underlying zoning district setbacks
- Side Setback
- Per the underlying zoning district setbacks
- Parking
- One additional space required beyond the two-space single-family requirement; all parking must be on the lot
- Owner Occupancy
- Required — either the principal dwelling or the ADU must be owner-occupied as the owner's primary residence
Permit Costs & Timelines
Permit Costs & Timelines
Specific permit fee schedules for Charleston are available from the local planning department. Fees vary based on project type, scope, and valuation.
Check Charleston permit fees →Official Sources
City-specific