Accessory Structures in Columbia County, FL (2026)
2 rules for unincorporated Columbia County, Florida.
Verified from official government sources
ADU Rules
Unincorporated Columbia County, Florida, allows one accessory dwelling unit per lot under Section 4.2.33 of the Land Development Regulations, sized between 350 square feet and 75 percent of the main home's habitable area or 800 square feet, whichever is smaller, and limited to specific residential and agricultural zoning districts.
Accessory Dwelling Unit Rules, Columbia County FL
Some RestrictionsColumbia County Land Development Regulations § 4.2.33(1), (2), (4), (6), (7)
1.Districts allowed. Accessory dwelling units shall only be permissible in the following Zone Districts: ESA-1, ESA-2, ESA-3, A-1, A-2, A-3, RR, RSF-1, RSF-2, RSF/MH-1, RSF/MH-2, PRD (on lots one-half acre or greater), and PRRD. 2.Clearly incidental. Accessory dwelling units shall only be permitted as accessory to, and in connection with, a principal dwelling unit. ... 4.Size of accessory dwell...
Shed & Carport Rules
In unincorporated Columbia County a shed or other accessory structure cannot sit in a required front, side, or waterfront yard. It belongs in the rear yard, at least ten feet off the rear lot line, and at least five feet from any other building on the lot.
Columbia County Shed and Accessory Structure Rules
Some RestrictionsColumbia County Land Development Regulations § 4.2.4
Unless otherwise provided in these land development regulations, in all districts accessory uses and structures shall not be located in required front, side, or waterfront yards but may be located in rear yards not less than ten feet from the rear lot line; provided, however, (1) that accessory structures for the housing of persons, such as guest houses, shall not be located in any required yar...
All Columbia County ordinances
See every category we cover for Columbia County: parking, noise, fences, fires, animals, pools, and more.
Columbia County Ordinance Hub →