Accessory Structures in St. Johns County, FL (2026)
2 rules for unincorporated St. Johns County, Florida.
Verified from official government sources
ADU Rules
St. Johns County's accessory-dwelling equivalent is the Guest House: a detached unit for a non-paying guest or family member, limited to microwave-and-bar-sink kitchen facilities and thirty days of continuous occupancy per tenant per year to avoid counting as a second dwelling.
St. Johns County Guest House Zoning Rules
Some RestrictionsSt. Johns County Land Development Code § 2.02.04.B.2
Guest House or Guest Quarters or Guest Cottage, provided the Structure is a unit in a Building separate from and Accessory in Use and size to the main residential Building on a Lot, intended and used only for intermittent or temporary occupancy by a non-paying guest or family member. A Guest House may contain limited kitchen facilities such as microwave oven, bar sink, less than 10 cubic foot r...
Shed & Carport Rules
A carport is an accessory structure in St. Johns County and needs a building permit. It meets the accessory setbacks, 3 feet from side and rear lines when 10 feet or more from the house, and must be engineered for hurricane wind loads.
St. Johns County Carport Construction Rules
Some RestrictionsSt. Johns County, FL — Accessory Use Setbacks
Accessory uses are required to meet the minimum structure setbacks, unless it is separated from the main structure by ten (10) feet or more, then the required setback is three (3) feet from the side and rear lot lines. It cannot be located in any required front yard.
All St. Johns County ordinances
See every category we cover for St. Johns County: parking, noise, fences, fires, animals, pools, and more.
St. Johns County Ordinance Hub →