Charleston, SC Zoning
Districts & Requirements
Every zoning district in Charleston with permitted uses, setbacks, height limits, and density requirements — in plain English. Charleston's zoning ordinance dates to 1931 — the first preservation ordinance in the U.S. The code has 48 base zoning districts, 14 overlay zones, and 22 Old City Height Districts that cap building heights on the peninsula. If you're developing on the peninsula, your height limit comes from the Old City Height District map, not just your base zoning. Off-peninsula, standard Table 3.1 height and setback rules apply.
17
Zoning districts
10
Overlay districts
150,000
Population
2024
Code adopted
Quick Reference
Find your district, see what you can do. Click any row for details.
| District | At a glance | Height | Coverage |
|---|---|---|---|
| SR-1 | Lowest-density single-family. Large suburban lots, 9,000 SF minimum. One house, one ADU. | 35 ft | 40% |
| SR-2 | Standard single-family lots. 6,000 SF minimum. Bread-and-butter Charleston residential. | 35 ft | 40% |
| SR-4 | Small-lot single-family. 4,500 SF minimum. Urban infill and cottage-style homes. | 35 ft | 50% |
| DR-1 | Duplexes and townhouses by right. 3,000 SF per unit. The missing middle entry point. | 35 ft / 2.5 stories | 40% |
| DR-2 | Higher-density multifamily. Apartments, townhouses, condos. Up to 3 stories off-peninsula. | 45 ft / 3 stories | 50% |
| RO | Office in residential buildings. Convert a house to a law firm or therapist's office. Limited commercial. | 35 ft | 40% |
| CT | Neighborhood-scale commercial. Hours restricted 6AM-11PM. Restaurant, retail, office compatible with adjacent homes. | 35 ft / 2.5 stories | 50% |
| LB | Mid-scale commercial. Retail, restaurant, office. No heavy commercial or auto-oriented uses. | 45 ft / 3 stories | 60% |
| GB | Full commercial. Retail, restaurant, office, hotel, multifamily. The most permissive commercial district. | 50 ft / 4 stories | 75% |
| UC | Upper King Street corridor. Mixed-use with ground-floor commercial. Charleston's most active entertainment district. | Per Old City Height District (typically 45-50 ft) | 80% |
| MU-1/WH | Mixed-use with mandatory workforce housing. Higher density in exchange for affordable units. | 50 ft / 4 stories (per height district on peninsula) | 80% |
| MU-2/WH | Highest-density mixed-use. 5+ stories possible off-peninsula. Major residential and commercial projects. | 60 ft / 5 stories (off-peninsula; height district on peninsula) | 85% |
| LI | Light manufacturing, warehousing, flex space. 50-ft height for high-bay buildings. | 50 ft | 70% |
| HI | Heavy manufacturing and processing. Largest setbacks in the city. Port-adjacent sites. | 60 ft | 60% |
| STR | Single-family and duplexes on small lots. 3,500 SF minimum. Peninsula infill and historic neighborhoods. | 35 ft / 2.5 stories (Old City Height District may further restrict) | 50% |
| GO | Office campus and medical office. No retail. Higher density than RO for professional use. | 45 ft / 3 stories | 50% |
| DI-TC | Mixed-use town center. Walkable retail, office, and residential. Form-based standards apply. | Per DI PUD standards (typically 3-4 stories) | Per PUD master plan (typically 80%+) |
Residential — Single-Family
4 districts in Charleston
SR-1
Single-Family Residential 1Large-lot single-family — the most restrictive residential district. Found in established neighborhoods like James Island and West Ashley. No path to density without rezoning.
What you can build
- ✓Single-family detached home
- ✓Accessory dwelling unit (ADU)
- ✓Home occupation
- ✗Duplexes or multifamily
- ✗Commercial or retail
- ✗Short-term rentals (unless in STR overlay)
Key numbers
- Height
- 35 ft
- Lot min
- 9,000 SF
- Width
- 60 ft
- Coverage
- 40%
- Front
- 25 ft
- Side
- 5 ft (9 ft combined both sides)
- Rear
- 25 ft
What this means in practice
40% coverage on 9,000 SF = 3,600 SF footprint. Two stories gets you ~6,500 SF total. The 25-ft front and rear setbacks eat into buildable area fast on shallow lots — measure the depth before you buy. If you're looking at SR-1 land near a commercial corridor, check the comp plan for future land use — a rezoning to DR or CT may be realistic.
SR-2
Single-Family Residential 2The most common single-family district. 6,000 SF lots, 50-ft wide — standard Charleston suburban. Found across West Ashley, James Island, and Johns Island.
What you can build
- ✓Single-family detached home
- ✓Accessory dwelling unit (ADU)
- ✓Home occupation
- ✗Duplexes or multifamily
- ✗Commercial or retail
Key numbers
- Height
- 35 ft
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- 40%
- Front
- 20 ft
- Side
- 5 ft
- Rear
- 20 ft
What this means in practice
40% of 6,000 SF = 2,400 SF footprint. Two stories gets you ~4,500 SF of living space. The 20-ft front setback is tighter than SR-1, which gives you more buildable depth. Spec home builders: this is Charleston's standard product — lenders and appraisers understand it. ADUs allowed in the rear with reduced setbacks.
SR-4
Single-Family Residential 4Smaller urban lots for infill development. Found on the peninsula edges and in older neighborhoods. Tighter setbacks and more coverage than SR-1 or SR-2.
What you can build
- ✓Single-family detached home
- ✓Accessory dwelling unit (ADU)
- ✓Home occupation
- ✗Duplexes or multifamily
- ✗Commercial or retail
Key numbers
- Height
- 35 ft
- Lot min
- 4,500 SF
- Width
- 45 ft
- Coverage
- 50%
- Front
- 15 ft
- Side
- 4 ft
- Rear
- 15 ft
What this means in practice
50% coverage on 4,500 SF = 2,250 SF footprint — plenty for a 2-story Charleston single. The 15-ft front setback puts the house closer to the street, which matches the historic Charleston streetscape. If you're on the peninsula, Old City Height District limits may further constrain your build — check the height district map before you design.
STR
Single-Family / Two-Family ResidentialAllows single-family homes and duplexes on tight urban lots. Found in Charleston's older peninsula neighborhoods — Cannonborough-Elliotborough, Radcliffeborough, Wagener Terrace. The classic Charleston side-yard house lot.
What you can build
- ✓Single-family detached home
- ✓Duplex (two-family dwelling)
- ✓Accessory dwelling unit
- ✓Home occupation
- ✗Apartments (3+ units)
- ✗Commercial or retail
- ✗Hotels
Key numbers
- Height
- 35 ft / 2.5 stories (Old City Height District may further restrict)
- Lot min
- 3,500 SF (single-family); 6,000 SF (duplex)
- Width
- 35 ft
- Coverage
- 50%
- Front
- 10 ft
- Side
- 4 ft
- Rear
- 15 ft
What this means in practice
STR is the peninsula workhorse residential district. 50% coverage on 3,500 SF = 1,750 SF footprint. 2.5 stories gets you ~4,000 SF — the classic Charleston single house form. On a 6,000 SF lot, convert to a duplex for rental income. Peninsula STR lots trade at a premium because of walkability and historic character, but BAR review adds 2-3 months to any project with exterior work visible from the street.
Residential — Diverse
2 districts in Charleston
DR-1
Diverse Residential 1Charleston's first step into multifamily entitlement. Allows duplexes, townhouses, and small apartments alongside single-family. Found in transitional areas between single-family neighborhoods and commercial corridors.
What you can build
- ✓Single-family detached
- ✓Duplex
- ✓Townhouses
- ✓Small apartments (up to 4 units)
- ✓Accessory dwelling unit
- ✗Large apartment complexes
- ✗Commercial or retail (need CT or LB)
- ✗Hotels or short-term rentals (unless in overlay)
Key numbers
- Height
- 35 ft / 2.5 stories
- Lot min
- 6,000 SF (3,000 SF per unit for duplex)
- Width
- 50 ft
- Coverage
- 40%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 20 ft
What this means in practice
3,000 SF per unit on a 12,000 SF lot = 4 units by right. At 40% coverage and 2.5 stories, that's roughly 12,000 SF gross. Townhouse projects on wider lots are the most common DR-1 product. If you're assembling DR-1 parcels for a townhouse project, check for any Old City Height District overlay on the peninsula — it may limit you to 2.5 stories regardless of the base zoning.
DR-2
Diverse Residential 2Medium-density residential allowing apartments, townhouses, and condominiums. Higher lot coverage and more units per acre than DR-1. Found along major corridors and in areas transitioning from single-family.
What you can build
- ✓Single-family detached
- ✓Duplex, triplex, fourplex
- ✓Townhouses
- ✓Apartment buildings
- ✓Condominiums
- ✗Standalone commercial
- ✗Hotels (need Accommodations overlay)
- ✗Industrial
Key numbers
- Height
- 45 ft / 3 stories
- Lot min
- 2,250 SF per unit
- Width
- 50 ft
- Coverage
- 50%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 15 ft
What this means in practice
2,250 SF per unit is meaningful density. A half-acre (21,780 SF) = 9 units by right. At 50% coverage and 3 stories, you get ~32,000 SF gross — enough for a 20-24 unit apartment building depending on unit mix. Off-peninsula DR-2 sites are where most of Charleston's new garden-style apartments land. On-peninsula, Old City Height Districts may override the 3-story base.
Transitional
1 district in Charleston
RO
Residential OfficeAllows office uses in residential structures — the classic Charleston house-to-office conversion. No retail. Found along transitional blocks between residential neighborhoods and commercial streets.
What you can build
- ✓Single-family home
- ✓Office (professional, medical, legal)
- ✓Duplex
- ✓Bed and breakfast (with special exception)
- ✗Retail or restaurant
- ✗Multifamily apartments
- ✗Industrial
Key numbers
- Height
- 35 ft
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- 40%
- Front
- 25 ft
- Side
- 5 ft
- Rear
- 25 ft
What this means in practice
RO is the rezoning play for investors buying houses on blocks that are shifting to office use. The conversion is straightforward: existing residential structure, change of use permit, parking requirement (1 space per 300 SF of office). If you need retail or restaurant, you need CT or LB zoning — RO won't get you there.
Commercial
5 districts in Charleston
CT
Commercial TransitionalSmall-scale commercial designed to sit next to residential without conflict. Operating hours capped at 6AM-11PM. Common at the edges of residential neighborhoods where a coffee shop, salon, or small office makes sense.
What you can build
- ✓Retail and restaurant (limited hours)
- ✓Office
- ✓Residential (subject to DR standards)
- ✓Mixed-use (commercial + residential)
- ✓Daycare and personal services
- ✗Drive-throughs
- ✗Auto-oriented uses
- ✗Industrial
- ✗Operations after 11PM
Key numbers
- Height
- 35 ft / 2.5 stories
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- 50%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 15 ft
What this means in practice
The 11PM operating hour restriction is the deal-killer for bars and late-night restaurants — don't buy CT for nightlife. But for daytime commercial (cafe, bakery, salon, medical office), CT works perfectly. Residential density follows the underlying DR standards. Mixed-use buildings with ground-floor commercial and upper-floor apartments are common CT projects.
LB
Limited BusinessGeneral neighborhood commercial without the intensity of General Business. Retail, restaurant, office, and residential allowed. No drive-throughs, no auto-oriented uses. Found along secondary commercial corridors.
What you can build
- ✓Retail and restaurant
- ✓Office
- ✓Residential and mixed-use
- ✓Personal and professional services
- ✓Hotels (with Accommodations overlay)
- ✗Drive-throughs
- ✗Auto repair, car wash, gas station
- ✗Heavy commercial or industrial
Key numbers
- Height
- 45 ft / 3 stories
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- 60%
- Front
- 10 ft
- Side
- 0 ft or 5 ft
- Rear
- 10 ft
What this means in practice
LB is the commercial district that still plays nice with adjacent residential. At 60% coverage and 3 stories, a quarter-acre site yields ~28,000 SF of mixed-use gross. The 10-ft front setback creates a tighter street presence than residential districts. If you're doing ground-floor retail with apartments above, LB is the entry-level commercial zoning that pencils for that product.
GB
General BusinessCharleston's broadest commercial district. Allows nearly everything: retail, restaurant, office, hotel, multifamily, entertainment. Found along major corridors — Savannah Highway, Rivers Avenue, US-17.
What you can build
- ✓All retail and restaurant types
- ✓Office and medical
- ✓Hotels and motels
- ✓Multifamily residential
- ✓Drive-throughs
- ✓Auto-oriented commercial
- ✓Entertainment venues
- ✗Heavy industrial
- ✗Manufacturing
Key numbers
- Height
- 50 ft / 4 stories
- Lot min
- None
- Width
- None
- Coverage
- 75%
- Front
- 0 ft (build-to allowed)
- Side
- 0 ft
- Rear
- 10 ft
What this means in practice
GB is where the drive-throughs, car washes, and big-box retail land — everything prohibited in CT and LB. At 75% coverage and 4 stories, a 1-acre site yields ~130,000 SF gross. But the real play on many GB sites is the redevelopment potential: converting auto-oriented strip into mixed-use at higher density. If the site is near the peninsula or a growing corridor, the land value may justify a MU-1/WH or MU-2/WH rezoning for residential density.
UC
Upper CorridorCovers upper King Street — Charleston's restaurant and nightlife corridor. Ground-floor commercial expected. Height governed by Old City Height Districts. BAR review required in the Old City District.
What you can build
- ✓Retail and restaurant
- ✓Bars and entertainment
- ✓Office
- ✓Upper-floor residential
- ✓Hotels (with Accommodations overlay)
- ✓Mixed-use
- ✗Auto-oriented uses
- ✗Industrial
- ✗Standalone residential on ground floor (King Street frontage)
Key numbers
- Height
- Per Old City Height District (typically 45-50 ft)
- Lot min
- None
- Width
- None
- Coverage
- 80%
- Front
- 0 ft (build-to line)
- Side
- 0 ft
- Rear
- 5 ft
What this means in practice
Upper King is Charleston's hottest commercial real estate. Height is controlled by the Old City Height District overlay, not the base UC zoning — check the height district map for your specific parcel. BAR approval required for exterior work. Plan for 3-6 months of BAR review for new construction. The 80% coverage and 0-ft setbacks let you build nearly lot-line to lot-line, but you'll need structured or below-grade parking. Ground-floor restaurant space on King commands $40-60/SF NNN.
GO
General OfficeDedicated office district for larger professional and medical office buildings. Found near MUSC and the medical district, and in suburban office parks off-peninsula.
What you can build
- ✓Professional office buildings
- ✓Medical and dental offices
- ✓Clinics and laboratories
- ✓Daycare facilities
- ✓Institutional uses
- ✗Retail or restaurant
- ✗Residential (except limited)
- ✗Industrial
Key numbers
- Height
- 45 ft / 3 stories
- Lot min
- 6,000 SF
- Width
- 50 ft
- Coverage
- 50%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 15 ft
What this means in practice
GO sites near MUSC trade at medical office premiums. The MUSC overlay district has its own height rules — buildings can go to 200 ft in designated areas with a 55-ft setback above 85 ft. If you're in the MUSC overlay, the standard GO height cap doesn't apply. Outside the overlay, GO is a straightforward 3-story office product.
Mixed Use
2 districts in Charleston
MU-1/WH
Mixed-Use 1 / Workforce HousingCharleston's density bonus district. Higher FAR and unit counts than standard commercial zoning in exchange for mandatory workforce housing. Found along corridors targeted for growth — upper Meeting Street, Morrison Drive, upper King Street extensions.
What you can build
- ✓Mixed-use (residential + commercial)
- ✓Apartment buildings with workforce units
- ✓Office and retail
- ✓Restaurants
- ✓Hotels (with Accommodations overlay)
- ✗Auto-oriented commercial
- ✗Industrial
- ✗Development without workforce housing component
Key numbers
- Height
- 50 ft / 4 stories (per height district on peninsula)
- Lot min
- None
- Width
- None
- Coverage
- 80%
- Front
- 0 ft (build-to line)
- Side
- 0 ft
- Rear
- 10 ft
What this means in practice
MU-1/WH is the deal: you get higher density than GB in exchange for workforce housing units. The economics work because the extra market-rate units on floors 3-4 more than cover the cost of below-market units. On a half-acre site at 80% coverage and 4 stories: ~70,000 SF mixed-use gross, 50-60 apartments over ground-floor retail. Run the pro forma with and without the workforce units — the density bonus almost always pencils.
MU-2/WH
Mixed-Use 2 / Workforce HousingCharleston's most intensive mixed-use district. Higher height and density than MU-1/WH. Designed for major corridor redevelopment — think Morrison Drive, upper Meeting Street, and the Neck area.
What you can build
- ✓Large mixed-use buildings
- ✓Apartment complexes with workforce units
- ✓Office buildings
- ✓Retail and restaurant
- ✓Hotels
- ✗Heavy industrial
- ✗Auto-oriented commercial
- ✗Development without workforce housing
Key numbers
- Height
- 60 ft / 5 stories (off-peninsula; height district on peninsula)
- Lot min
- None
- Width
- None
- Coverage
- 85%
- Front
- 0 ft (build-to line)
- Side
- 0 ft
- Rear
- 5 ft
What this means in practice
MU-2/WH on a 1-acre site at 85% coverage and 5 stories: ~185,000 SF gross. That's 150-180 apartments over 15,000 SF of retail. Structured parking is mandatory at this density. The Neck area (north of the Crosstown) is where most MU-2/WH land trades — still priced below peninsula infill but with the density to make projects pencil. Watch for flood zone issues on Neck parcels — base flood elevation plus freeboard can push your first-floor 8-10 ft above grade.
Industrial
2 districts in Charleston
LI
Light IndustrialLight industrial and flex space — manufacturing, warehousing, distribution, and office in the same building. Found along the industrial corridors of upper Meeting Street, Reynolds Avenue, and North Charleston boundaries.
What you can build
- ✓Light manufacturing
- ✓Warehousing and distribution
- ✓Office and flex space
- ✓Auto repair and service
- ✓Wholesale commercial
- ✗Residential (except caretaker quarters)
- ✗Retail (limited)
- ✗Hotels
Key numbers
- Height
- 50 ft
- Lot min
- None
- Width
- None
- Coverage
- 70%
- Front
- 25 ft
- Side
- 10 ft
- Rear
- 20 ft
What this means in practice
LI sites along the Neck and upper Meeting Street are the rezoning play. As the Neck gentrifies, LI parcels adjacent to MU-2/WH developments become rezoning candidates. Check the comprehensive plan — if the future land use map shows mixed-use, the rezoning path is well-worn. Current LI land trades at a significant discount to MU-2/WH, and the rezoning creates immediate value.
HI
Heavy IndustrialCharleston's heaviest zoning — manufacturing, processing, port operations. Large buffers on all sides. Concentrated near the port and along the Cooper River industrial corridor.
What you can build
- ✓Heavy manufacturing
- ✓Processing and assembly
- ✓Port-related operations
- ✓Large-scale warehousing
- ✓Utility installations
- ✗Residential
- ✗Retail or restaurant
- ✗Hotels
Key numbers
- Height
- 60 ft
- Lot min
- None
- Width
- None
- Coverage
- 60%
- Front
- 50 ft
- Side
- 25 ft
- Rear
- 25 ft
What this means in practice
The 50-ft front and 25-ft side/rear setbacks are the largest in Charleston. HI sites near the port are genuinely industrial — don't try to shoehorn residential into an HI parcel. But HI parcels near the Neck that aren't actively industrial are long-term rezoning candidates as the area transitions. The value gap between HI and MU-2/WH is enormous.
Planned Development
1 district in Charleston
DI-TC
Daniel Island Town CenterDaniel Island's commercial and mixed-use core. Governed by the Daniel Island PUD master plan with form-based design standards. Ground-floor retail with residential and office above.
What you can build
- ✓Ground-floor retail and restaurant
- ✓Upper-floor residential
- ✓Office
- ✓Hotels
- ✓Mixed-use
- ✗Heavy commercial
- ✗Industrial
- ✗Auto-oriented uses
Key numbers
- Height
- Per DI PUD standards (typically 3-4 stories)
- Lot min
- Per PUD master plan
- Width
- Per PUD master plan
- Coverage
- Per PUD master plan (typically 80%+)
- Front
- Build-to line
- Side
- 0 ft
- Rear
- Per PUD master plan
What this means in practice
DI-TC is governed by the Daniel Island PUD, not standard city zoning — you need to review the PUD master plan for your specific parcel. The form-based standards control building placement, materials, and facade articulation. Architectural review through the Daniel Island Design Review Board (separate from the city BAR). Land prices reflect the premium of a master-planned community — adjust your pro forma accordingly.
Development Bonus Program
Charleston's workforce housing incentive operates through MU-1/WH and MU-2/WH zoning districts. Developers get higher density and height allowances in exchange for including workforce housing units — typically 10-20% of units at 80% AMI. The density bonus makes the affordable units financially viable: the extra market-rate units on upper floors more than compensate for below-market rents on workforce units. Properties can be rezoned from standard commercial to MU/WH through a legislative process — many GB and LB parcels along corridors are good candidates. The city has been actively encouraging MU/WH rezonings as part of its affordable housing strategy.
Overlay Districts
Old and Historic District (BAR-L / BAR-S)
America's first historic district, established 1931. Covers the peninsula south of approximately Line Street. All new construction, alterations visible from the public right-of-way, and demolitions require Certificate of Appropriateness from the Board of Architectural Review. BAR-Large handles major projects; BAR-Small reviews minor work. Plan for 3-6 months of BAR review for new construction. Demolition of any structure is extremely difficult to approve — the BAR can deny demolition outright. This is the single biggest regulatory constraint on peninsula development.
Old City District
Broader preservation overlay covering the peninsula north of the Old and Historic District to approximately Mount Pleasant Street. BAR reviews demolitions of buildings 50+ years old. Exterior modifications visible from the right-of-way require review. Less restrictive than the Old and Historic District — new construction standards are more flexible — but still adds 1-3 months of review time.
Old City Height Districts
22 separate height districts overlaying the peninsula. Height limits are tied to street width at a 1:1 ratio. On streets less than 35 ft wide: max 2.5 stories. On streets 35-50 ft: max 3 stories. On streets over 50 ft: max 3 stories / 45 ft. The BAR may permit up to 4 stories / 45 ft for multifamily buildings based on architectural merit. FEMA freeboard can add up to 5 ft of additional height (max 50 ft total). These height limits override your base zoning — always check the height district before designing.
Accommodations Overlay (A)
Identifies areas where hotels, inns, and bed-and-breakfasts are permitted. Accommodations uses require Board of Zoning Appeals approval. Outside the overlay, hotels are generally prohibited regardless of base zoning. If your project includes lodging, confirm the parcel is in the Accommodations overlay before you proceed — getting the overlay added is a separate legislative process.
Short Term Rental Overlay (ST)
Regulates Airbnb and VRBO-style rentals. Commercial short-term rentals allowed in commercial zones (CT, LB, GB, UC, MU-1/WH, MU-2/WH) within the overlay. Owner-occupied STRs have different rules. Ten or more units on one lot triggers Accommodations overlay requirements. STR regulations have been heavily debated — verify current rules before underwriting STR income.
MUSC Medical District Overlay
Covers the MUSC campus area between Rutledge and Ashley Avenues on Calhoun Street. Allows buildings up to 200 ft with a 55-ft setback required above 85 ft. Potential for 250-ft structures under current overlay language. This is the only place in Charleston where true high-rise development is permitted. Adopted 2025.
Savannah Highway Corridor Overlay (SH)
Design standards for development along US-17 (Savannah Highway) through West Ashley. Controls building placement, landscaping, access management, and signage. Intended to transition the corridor from auto-oriented strip development to a more walkable pattern. If you're developing along Savannah Highway, the overlay adds design standards on top of your base zoning.
Johns Island Overlay
Controls development intensity on Johns Island to manage growth, preserve rural character, and protect environmental resources. Additional stormwater management and tree preservation requirements. Larger setbacks and lower densities than standard city zoning. If you're building on Johns Island, assume more restrictive standards than the base district would suggest.
Landmark Overlay (LMK)
Applies to individually designated landmark properties throughout the city. No portion of a new structure within 50 ft of an 'exceptional' or 'excellent' rated historic building can exceed that building's height without BAR approval. If your site is near a landmark, measure the distance — the 50-ft buffer can significantly limit your height.
FEMA Flood Overlay
Charleston is one of the most flood-prone cities in the U.S. Check FEMA flood zone before making an offer — AE zones require base flood elevation plus freeboard, which can push your first floor 8-12 ft above grade on peninsula and low-lying sites. VE zones (coastal high hazard) are even more restrictive. Flood insurance costs and foundation requirements dramatically affect project economics. The city's Dutch Dialogues plan is reshaping stormwater infrastructure but hasn't changed FEMA maps yet.
Frequently Asked Questions
How do I check zoning for a specific property in Charleston?
Use the City's interactive zoning map at gis.charleston-sc.gov — enter an address to see the base district, overlays, and Old City Height District. For what the zoning actually means for your specific parcel, including permitted uses, setbacks, and development potential, you need to cross-reference the base district with any applicable overlays and the height district map.
What is the Board of Architectural Review and when do I need approval?
The BAR reviews all exterior work visible from the public right-of-way in the Old and Historic District and Old City District. BAR-Large handles major projects (new construction, additions, demolitions). BAR-Small handles minor work (windows, doors, paint). Plan for 3-6 months for new construction review. Engage the BAR staff informally before submitting — pre-application meetings save time.
How do the Old City Height Districts work?
22 height districts overlay the peninsula. Height is tied to street width: under 35 ft ROW = max 2.5 stories, 35-50 ft ROW = max 3 stories, over 50 ft ROW = max 3 stories / 45 ft. The BAR can approve up to 4 stories / 45 ft for multifamily on merit. FEMA elevation requirements can add up to 5 extra feet (50 ft max). These limits override your base zoning — a GB parcel on the peninsula doesn't get 4 stories if the height district says 2.5.
Can I build a hotel or short-term rental in Charleston?
Hotels require the Accommodations Overlay and Board of Zoning Appeals approval. Short-term rentals (Airbnb/VRBO) require the STR Overlay and compliance with the city's STR ordinance — commercial STRs are limited to commercial zones within the overlay. Ten or more units triggers accommodations review. Rules have changed frequently — verify current regulations before underwriting.
What's the difference between peninsula and off-peninsula development?
Peninsula sites face three additional layers: Old City Height District caps (override base zoning height), BAR review for exterior work (adds 3-6 months), and tighter flood elevation requirements. Off-peninsula sites follow standard Table 3.1 height and setback rules without BAR review or height district overlays. Land is cheaper off-peninsula, entitlement is faster, and you get more height — but you lose the walkability and rent premiums of the peninsula.
How does Charleston's workforce housing zoning work?
MU-1/WH and MU-2/WH districts provide higher density and height allowances in exchange for mandatory workforce housing units. The density bonus makes the affordable units financially viable. Properties can be rezoned from standard commercial to MU/WH. The city actively encourages these rezonings — if you're on a commercial corridor with a comp plan designation supporting mixed-use, the path is well-established.
Is my property in the City of Charleston or Charleston County?
This matters enormously. The City of Charleston has its own zoning ordinance with BAR review, Old City Height Districts, and workforce housing programs. Unincorporated Charleston County uses different districts and standards. Some areas appear to be 'Charleston' by mailing address but are actually in county jurisdiction. Check the GIS map to confirm. Annexation into the city is possible and may change your development rights.
Get the full property profile for
any address in Charleston
Permitted uses, setbacks, density, buildable area, overlays, and nearby development activity — for a specific parcel, not just the district.