Columbia, SC Zoning Overlays & Bonuses: Downtown Design Guide (2026)

Sec. 17-3.7(g) of the Columbia Zoning Ordinance and Land Development Regulations creates the OV-DC: Downtown Columbia Overlay District to prioritize the public realm with safe, connected, pedestrian-focused spaces. The section applies in addition to base zoning district standards, and where OV-DC standards conflict with the base district, OV-DC controls. Development in the district must comply with the Downtown Columbia Design Guidelines, which the ordinance incorporates by reference, including the Development Frontage standards that set applicable setback ranges parcel by parcel.

The overlay modifies several otherwise-applicable standards. Building height is capped at 75 feet for any site within 300 feet of a residential base zoning district or the western boundary of the West Gervais Protection Area. Vehicle sales and service uses cannot locate within 1,000 feet of another business in the same category, and outdoor storage for those uses is prohibited outright. Gasoline sales and service stations must place the building at the front setback line, pushing pumps and canopies behind the building rather than facing the street. Parking lots are barred as a principal use of a downtown parcel, and setbacks generally follow the ranges the Development Frontage section of the Design Guidelines specifies rather than one citywide number.

Because the OV-DC overlay stacks on top of base district zoning, a downtown project must satisfy both the underlying district's use table and these design-district modifications; the Certificate of Design Approval - Design Districts process in Sec. 17-2.5(h) is the review mechanism developers use to confirm compliance with the Design Guidelines before construction begins.