Columbia County, FL Building Setbacks & Zoning: Setback Rules (2026)

Sec. 4.7.7 of the county's Land Development Regulations sets the minimum yard requirements for single-family dwellings in every RSF subdistrict at a flat 25-foot front yard, 10 feet on each side yard, and a 15-foot rear yard, regardless of whether the lot is platted RSF-1 (one-acre minimum), RSF-2 (20,000-square-foot minimum) or RSF-3 (10,000-square-foot minimum, available only where community water and sewer service reach the lot). These are minimums measured from the property line, separate from any additional right-of-way setback required under Sec. 4.2. Institutional and non-residential uses inside RSF, such as churches, schools, child care centers, and private clubs, are held to a taller standard instead: a 35-foot front yard, 25 feet on each side, and a 35-foot rear yard under the same section.

Along wetlands and named waterways, Sec. 4.7.7 layers on a further natural buffer, prohibiting any structure other than a permitted dock, walkway or pier within 35 feet of a wetland and 50 feet of a perennial river, stream or creek, a buffer relevant to the many RSF lots near the Santa Fe and Ichetucknee corridors. A homeowner who needs relief from the 25/10/15-foot minimums must apply for a variance through the board of adjustment under LDR Article 12 rather than assume an administrative waiver.