Accessory Structures in Montgomery County, OH (2026)
2 county-level rules, plus city-specific rules for 1 city in Montgomery County, Ohio.
Verified from official government sources
ADU Rules
Montgomery County has no countywide accessory-dwelling-unit ordinance. Whether an ADU, in-law suite, or backyard cottage is allowed on your lot is decided by your city, village, or township zoning code, not by county government.
ADU Rules in Montgomery County, OH: Set by Your City or Township
Some RestrictionsORC 519.02
The board of township trustees may regulate by resolution, in accordance with a comprehensive plan, the location, height, bulk, number of stories, and size of buildings and other structures... and the uses of land for trade, industry, residence, recreation, or other purposes in the unincorporated territory of the township.
Shed & Carport Rules
Montgomery County sets no countywide shed ordinance. Whether a storage shed needs a permit, and its setbacks, size, and height, are decided by your city, village, or township zoning code and the Ohio Building/Residential Code.
Shed Rules in Montgomery County, OH: Local Zoning Governs
Some RestrictionsORC 519.02
The board of township trustees may regulate by resolution... the location, height, bulk, number of stories, and size of buildings and other structures... percentages of lot areas that may be occupied, set back building lines, sizes of yards, courts, and other open spaces.
Accessory Structures by City in Montgomery County
1 cities in Montgomery County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
All Montgomery County ordinances
See every category we cover for Montgomery County: parking, noise, fences, fires, animals, pools, and more.
Montgomery County Ordinance Hub →