Overview
Worth knowing
- District naming is descriptive, not encoded (e.g., RSF-1 not SF-7500). Numbering indicates intensity rank, not lot size. Always reference ordinance definition before inferring lot size.
- Two-Family mill village carve-out (RD-MV) is specialized for historic mill village neighborhoods; standards may differ from standard RD district.
- Institutional zones are highly specialized (INS-FJ for Fort Jackson, INS-ZOO for Riverbanks Zoo are purpose-built districts, not general institutional zones).
+ 3 more in Quirks & notes
Districts
res_sf 5spec 5com 5ind 3res_th 2res_mf 2mu 2cbd 1off 1
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| T/C | Transitional/Conservation | res_sf | — | 40 ft | 0.1 | — | — | — | — / — / — |
| LL-R | Large Lot — Reserve | res_sf | — | — | — | — | — | — | — / — / — |
| RSF-1 | Single Family — Large Lot | res_sf | — | — | — | — | — | — | — / — / — |
| RSF-2 | Single Family — Medium Lot | res_sf | — | — | — | — | — | — | — / — / — |
| RSF-3 | Single Family — Small Lot | res_sf | — | — | — | — | — | — | — / — / — |
| RD | Two-Family | res_th | — | — | — | — | — | — | — / — / — |
| RD-MV | Two-Family — Mill Village | res_th | — | — | — | — | — | — | — / — / — |
| RM-1 | Residential Mixed — Low | res_mf | — | — | — | — | — | — | — / — / — |
| RM-2 | Residential Mixed — Medium/High | res_mf | — | — | — | — | — | — | — / — / — |
| INS-GEN | Institutional — General | spec | — | — | — | — | — | — | — / — / — |
| INS-U/M | Institutional — University/Medical | spec | — | — | — | — | — | — | — / — / — |
| INS-ZOO | Institutional — Riverbanks Zoo | spec | — | — | — | — | — | — | — / — / — |
| INS-FJ | Institutional — Fort Jackson | spec | — | — | — | — | — | — | — / — / — |
| INS-T/U | Institutional — Transportation/Utilities | spec | — | — | — | — | — | — | — / — / — |
| MU-1 | Mixed-Use — Low | mu | — | — | — | — | — | — | — / — / — |
| MU-2 | Mixed-Use — High | mu | — | — | — | — | — | — | — / — / — |
| NAC | Neighborhood Activity Center | com | — | — | — | — | — | — | — / — / — |
| CAC | Community Activity Center | com | — | — | — | — | — | — | — / — / — |
| RAC | Regional Activity Center | com | — | 100 ft | — | — | — | — | — / — / — |
| DAC | Downtown Activity Center | cbd | — | — | — | — | — | — | — / — / — |
| O-I | Office & Institutional | off | — | — | — | — | — | — | — / — / — |
| GC | General Commercial | com | — | — | — | — | — | — | — / — / — |
| MC | Mixed Commercial | com | — | — | — | — | — | — | — / — / — |
| LI | Light Industrial | ind | — | — | — | — | — | — | — / — / — |
| HI | Heavy Industrial | ind | — | — | — | — | — | — | — / — / — |
| EC | Employment Campus | ind | — | 75 ft | 0.75 | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
OV-HP
Historic Preservation Overlay District
HPMap-designated Local Historic Districts (LHDs) including Five Points, Russell/Olympia/Gonzales, and scattered historic landmarks
| demolition_review | Design review required before demolition approval for contributing structures |
|---|---|
| alterations | Architectural Review Board (ARB) approval required |
| new_construction | Must be compatible with historic character of district |
| fenestration | Subject to compatibility review |
| roofline | Subject to compatibility review |
| materials | Subject to compatibility review |
| coa_required | True |
OV-DC
Downtown Columbia Design Overlay District
DTDowntown Columbia core area including Main Street corridor and surrounding downtown blocks
| ground_floor_use | Commercial or public use required (retail, restaurants, galleries, offices) |
|---|---|
| build_to_line | Structure must address street frontage |
| facade_transparency | Minimum fenestration required for ground floor |
| height_incentive | 20[1] |
| parking_reduction | Reduced requirements relative to base district |
| design_review | True |
| activation_standards | Open hours and public interaction required for ground-floor uses |
OV-NMC
North Main Corridor Design Overlay District
CORNorth Main Street corridor as defined on Zoning Map
| setback_enhanced | Enhanced setback and landscaping along arterial frontage |
|---|---|
| signage_design | Design standards for signage and site features visible from public street |
| facade_articulation | Required to avoid blank walls |
| street_tree | Buffer and tree standards |
| pedestrian_access | Connectivity requirements |
OV-GATE
Gateway Design Overlay District
DTKey entry corridors and gateway locations (typically I-20 frontage and major approach routes)
| architecture | Enhanced architectural and site design standards for high-visibility locations |
|---|---|
| landscape_buffer | Required buffer yard |
| signage | Design standards for height, materials, lighting |
| setback | Building setback and orientation requirements |
| visual_quality | Development standards emphasizing visual quality at city entries |
OV-5P
Five Points Design Overlay District
CONFive Points neighborhood commercial core and historic district region
| design_compatibility | Standards for compatibility with historic streetscape and pedestrian environment |
|---|---|
| ground_floor | Retail or active use required |
| facade | Design and materials standards |
| parking | Location and screening required (rear or on-street, not street-facing) |
| setback | Building setback aligned with historic building line |
| height_density | Standards balanced with residential adjacency |
OV-CCP
Community Character Protection Overlay District
CONMap-designated neighborhoods with distinctive architectural or planning character (typically lower-density residential)
| design_review | Required for new construction to ensure neighborhood compatibility |
|---|---|
| setback | Enforce existing neighborhood pattern |
| height | Enforce existing neighborhood pattern |
| lot_coverage | Enforce existing neighborhood pattern |
| facade | Reflect neighborhood architectural tradition |
| materials | Reflect neighborhood architectural tradition |
| landscaping | Maintain neighborhood aesthetic |
OV-A
Airport Safety Overlay District
APAreas within defined approach zones and height zones for Columbia Metropolitan Airport and Fort Jackson airfield (FAA Part 77)
| max_height | Varies by zone; typically decreasing with distance from runway |
|---|---|
| restricted_uses | List incompatible with aircraft operations |
| obstruction_prohibition | No obstruction of approach/departure corridors |
| faa_notification | FAA Form 7460 notification required for structures approaching height limit |
| glare_lighting | Standards to avoid hazard to aircraft |
OV-FW
Floodway Overlay District
FPFEMA Special Flood Hazard Areas and City floodway mapping; applies within floodway of Congaree River, Broad River, and tributary streams
| no_obstruction | No fill or structure obstruction within floodway |
|---|---|
| no_rise_cert | No-rise certification required |
| bfe_freeboard | Base Flood Elevation + freeboard (typically BFE + 2 ft minimum habitable floor) |
| substantial_improvement | >50% property value triggers floodproofing requirements |
| residential_prohibition | No new residential structures in high-hazard floodway; non-residential allowed with mitigation |
| elevation_mitigation | Elevation, floodproofing, wet floodproofing, or relocation required |
| utilities | Mechanical, electrical systems above BFE + freeboard |
| stormwater | Detention/retention required |
OV-FP
Floodplain (100-Year) Overlay District
FPFEMA Special Flood Hazard Area boundaries (100-year flood boundary, fringe area)
| bfe_determination | Required for all development |
|---|---|
| habitable_floor_residential | BFE + 1 ft minimum |
| habitable_floor_nonresidential | BFE + wet floodproofing |
| parking_utilities | Elevation or floodproofing required |
| substantial_improvement | >50% property value triggers elevation/mitigation review |
| lowest_opening | Protection or wet floodproofing for non-residential |
| stormwater | Management and detention required |
OV-OAS
Outdoor Advertising Sign Overlay District
LQEntire city (applied citywide to supplement base district signage standards)
| height_area_setback | Varies by zoning district context |
|---|---|
| property_line_setback | Typical 10-25 ft depending on context |
| illumination | No glare, directed lighting |
| animated_signs | Restrictions in residential areas |
| spacing | Requirements between similar signs |
| material_design | No dilapidated or damaged signs |
| digital_led | Limitations on flashing and high brightness in residential contexts |
OV-HSV
Height and Setback View Corridor Overlay District
DTStrategic view corridors identified in Comprehensive Plan (Main Street, Congaree River views, historic vistas)
| height_protection | Height limits where views of significant landmarks or natural features require protection |
|---|---|
| setback_enforcement | Street wall alignment and view plane enforcement |
| street_tree | Public realm standards |
| facade_design | Maintaining view lines through and along corridor |
| sightline_protection | No tall structures blocking sightlines to Capitol, courthouse, or river vistas |
Adopted building codes
Statewide
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- District naming is descriptive, not encoded (e.g., RSF-1 not SF-7500). Numbering indicates intensity rank, not lot size. Always reference ordinance definition before inferring lot size.
- Two-Family mill village carve-out (RD-MV) is specialized for historic mill village neighborhoods; standards may differ from standard RD district.
- Institutional zones are highly specialized (INS-FJ for Fort Jackson, INS-ZOO for Riverbanks Zoo are purpose-built districts, not general institutional zones).
- Overlay-first design approach: comprehensive overlay system drives many development decisions before base district standards apply. Confirm overlay applicability early in project analysis.
- Downtown Columbia Design Overlay (OV-DC) very recent (effective January 5, 2026) and represents strategic shift toward downtown mixed-use intensification. Projects in downtown core should cross-reference both base district and OV-DC simultaneously.
- Unified Development Ordinance (UDO) effective August 30, 2021. Projects approved before effective date retain original approval conditions; new applications use UDO standards exclusively. Verify project approval date.
Formulas
Definitions
- height
- Grade to highest point of structure. Article 17.
- lot_coverage
- Building footprint / lot area.
- far
- Gross floor area / lot area.
- du_ac
- Dwelling units per gross acre.
- impervious_cover
- setback_front
- Front property line to nearest building face.
- setback_side
- Side property line to nearest building face.
- setback_rear
- Rear property line to nearest building face.
- parking
- Spaces per dwelling unit unless noted.
- base_flood_elevation
- Minimum habitable floor elevation relative to 100-year flood benchmark.
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- max_units_from_density
lot_area_sf * du_ac / 43560
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
Sort by
Max height
— ft
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Floor area ratio
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Lot coverage
—%
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Setbacks (F / S / R)
— ft
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Parking
— /unit
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Max density
— du/ac
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Min lot size
— sf
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
Citations
- [1] i
Research status
Data quality
35%completeness26 confirmed15 partial8 inferred
Documented gaps
- Base district detailed KPI tables (minimum lot size, FAR, DU/AC, parking, setbacks) — PDFs from planning department inaccessible
- Permitted use lists and detailed use tables — Principal Use Table PDF could not be parsed
- Setback, FAR, density details for mixed-use and commercial districts
- Specific height bonuses in OV-DC beyond inferred +20-25%
- Exact design review criteria in OV-5P, OV-CCP
- Specific view corridors and exact parameters in OV-HSV
- Detailed overlay district parameters beyond framework
Known issues
schema:v1-legacypriority:lowdata:gaps-present
Other cities in this state
Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.