Oregon, OH Accessory Structures: Shed & Carport Rules (2026)

01 governs accessory buildings, including sheds and detached garages, in every "R" residential district and any "A" agricultural district used as a dwelling. The structure must be located in the rear yard, cannot exceed twenty feet in mean height, and may not occupy more than thirty percent of the rear yard area, measured from the rear property line to the main structure (porches, decks and projections on the main structure do not count toward that measurement). 13 controls how accessory building height itself is measured.

On a corner lot whose rear abuts the side of an adjoining lot, no accessory building may sit closer than three feet to that adjoining side lot line. More generally, accessory structures must stay at least three feet from the main house or any lot line, and projections such as overhangs must clear two feet; structures open on all sides, including cabanas, pergolas, pavilions and gazebos (removable screens count as open), are exempt from the three-foot setback to the main structure. Accessory buildings must sit on the same lot as the main use, and the intent language notes the main building must be under roof before permits for an accessory structure can issue.

A safety rule specific to sheds and garages: an enclosed detached accessory structure must be fire-rated with a minimum of one-half inch drywall or equivalent on all wall surfaces within five feet of the main structure. The section was last amended by Ord. 083-2024, passed May 13, 2024. 99.