In Fulton County, any wall over four feet needs a permit and engineered plans

https://south-usa.b-cdn.net/the-fulton-county-four-foot-retaining-wall-permit-rule-every-homeowner-should-know.html

In Fulton County, any wall over four feet needs a permit and engineered plans. Knowing this rule protects your investment, ensures safety, avoids fines, and speeds approvals for durable, code-compliant construction.