Shed permit rules in Hamilton County, IN — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Sheds are governed by your city's zoning code, not the county. In Carmel, a detached accessory building must sit at least five feet from side and rear lot lines, top out at 18 feet, and requires an Improvement Location Permit.
In Hamilton County, shed and accessory-building rules are set by each city's Unified Development Ordinance under IC 36-7-4, not by county government (which zones only unincorporated land). Carmel's UDO (Section 5.02) is representative: an Improvement Location Permit is required before building; a detached accessory building more than ten feet from the house must be set back at least five feet (or the easement plus three feet) from side and rear lot lines; and accessory buildings in residential districts may not exceed 18 feet in height. The combined ground-floor area of garages and accessory buildings may not exceed 75 percent of the home's ground-floor area. Fishers, Westfield, and Noblesville have similar UDO standards. Verify setbacks and permit thresholds with your city.
A shed built without an Improvement Location Permit, or violating city setbacks, height, or coverage limits, is enforced by your city's code-enforcement office through stop-work orders, retroactive permits, fines, or removal. The county does not enforce city shed rules.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Hamilton County's shed rules rules stack up against other locations.
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