Marietta, GA Accessory Structures: Shed & Carport Rules (2026)

01(F) sets the placement and size rules. Every accessory structure must sit on the same lot as the house, to its side or rear, at least 10 feet from the side or rear property line; on a corner lot it cannot sit closer to the street right-of-way than the house itself. A shed under 15 feet tall only has to clear that 10-foot line, but once it exceeds 15 feet, up to the district's 35-foot cap, the rear setback jumps to 30 feet, or a distance equal to the structure's own height if that is shorter.

Attach the shed to the house in any way and it stops being an accessory structure altogether: it becomes part of the principal structure and must meet the full house-scale bulk and area rules, including the district's setbacks and lot coverage cap. No shed may be built before the house exists on the lot. A canvas carport, tent or similar nondurable-material structure is treated as temporary rather than a true accessory building because it cannot meet the building code's requirements for one, and Marietta caps that kind of structure at 14 consecutive days and 42 days total per year. A shed's footprint is not separately capped in R-1, but oversized accessory buildings still count toward the district's 35% maximum lot coverage.