In Fulton County, any wall over four feet needs a permit and engineered plans
https://home-fix-hub.s3.us.cloud-object-storage.appdomain.cloud/reinforcing-a-failing-retaining-wall-before-it-reaches-your-brookhaven-foundation.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.