Rockdale County, GA Fence Regulations: Retaining Walls (2026)

Section 214-6, the county's fence, wall and hedge standards, folds retaining walls into the same article that governs landscape and screening walls. Clause (10) sets a 4-foot trigger: once a retaining wall rises above 4 feet, it must be permitted and inspected by the chief building official, the same reviewing authority used for fences over 7 feet under clause (9). Retaining walls share the article's general construction rules too: height is measured from normal finished grade to the highest point of the structure, prohibited materials include tires, scrap and sheet metal, plastic and fiberglass, medium-density fiberboard, plywood and exposed common concrete block, and any wall built along a street right-of-way is limited to a 3-foot setback that widens on corner lots for sight distance under RDOT standards.

Because retaining walls are frequently used to hold back graded slopes near a shared property line, the same Table of Fence, Wall and Hedge Requirements that lets fences sit directly on the line also applies, subject to the height caps set for the applicable zoning district. Owners planning a wall taller than 4 feet should expect the chief building official to review structural adequacy as part of the permit and inspection process, since an unpermitted retaining wall failure directly risks the soil and structures on the low side of the slope.