Yes, a permit is required for pre-manufactured above-ground/on-ground pools which do not require excavation for installation (beyond leveling the ground surface). You need to be aware of the following for placement of such a structure at your residence. You must maintain a minimum 10-foot offset from side and rear property lines behind house; Cannot place the pool or grade area in close proximity to the location of septic system tank and field lines (State Environmental Health Office: 770-443-7877); Must follow applicable code sections with respect to pool (barrier, ladder, power) Contact Building & Permitting Division if you have questions.