Retaining walls more than 3 feet tall require a building permit and engineered design in Atlanta. Walls that retain soil for driveways, pools, or structures require permits regardless of height.
Per the Georgia amendments to the IRC adopted in Atlanta, a retaining wall taller than 3 feet (measured from bottom of footing to top) or any wall supporting a surcharge (such as a driveway, pool, or structure) requires a building permit, engineered drawings, and inspection. Stacked segmental block walls and poured concrete walls are both common in Atlanta's rolling topography; both need engineering above 3 feet. Drainage behind the wall must meet code to prevent hydrostatic pressure failures - a frequent cause of wall collapses in metro Atlanta's clay soils. Walls near the property line still must comply with zoning setbacks even if they do not need a building permit.
Unpermitted walls must be inspected and may be required to be reconstructed. Failures that damage neighboring property can trigger civil liability and stop-work orders.
Atlanta, GA
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Side-by-side rule comparisons with other cities in Fulton County.
See how other cities in Fulton County handle retaining walls.
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