Alachua County, FL Fence Regulations: Retaining Walls (2026)

08 of the ULDC, in Article I of Chapter 407, is written as a protective rule for property owners rather than a restriction: it states that nothing in the county's land development regulations prohibits or prevents building a retaining wall on any property, subject to a single condition, the wall must not adversely affect the natural flow of surface water or create any other adverse effect on adjacent or adjoining land. No numeric height limit or setback appears in this section. The county does reach retaining walls through its development-application requirements, however.

' In practice this means a wall built to the Florida Department of Transportation's standard index design does not need custom engineering, but any wall that departs from that index, a taller wall, an unusual soil condition, or a custom design, must be signed and sealed by a PE and submitted with the development application before Growth Management, Public Works, and the Environmental Protection Department will sign off. 08 folds directly into the county's broader drainage and adjacent-property-impact standards, a wall that redirects stormwater onto a neighbor's lot or erodes an adjoining bank can be challenged even without a separate numeric limit. This is unincorporated-county law only; Gainesville and the county's other municipalities set their own retaining wall standards.