In some cases, yes. Such cases are if you are performing what is called 'minor landscaping activities'.The germane ordinances incorporate minor landscaping activities as grading activities of less than 5,000 square feet (about a 70'x70' area). If you find your activites are greater than this, then you will need to obtain a development permit from the Community Development Department, located at 65 Lawrenceville Street, Norcross GA 30071.