5 county-level rules, plus city-specific rules for 1 city in Montgomery County, Ohio.
Verified from official government sources
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.
ORC 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.
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.
ORC 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.
Converting a garage to living space is a zoning and building matter handled by your Montgomery County city, village, or township, not the county. A permit and Ohio Residential Code compliance are required, and local zoning controls whether the new use is allowed.
Montgomery County has no countywide carport ordinance. Whether you can build a carport, and its setbacks, size, and permit requirements, are governed by your city, village, or township zoning code and the Ohio Building Code.
Montgomery County has no tiny-home ordinance. Whether a tiny house is allowed, and as what, is decided by your city, village, or township zoning code, while the Ohio Residential Code sets building standards for any permanent dwelling.
1 cities in Montgomery County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Montgomery County — parking, noise, fences, fires, animals, pools, and more.
Montgomery County Ordinance Hub →