Building Permits in Hamilton County, OH
Check permit requirements for home improvement projects in Hamilton County. Select a project type below to see local requirements, estimated fees, and how to apply.
Key Exemptions in Hamilton County
These projects typically don't require a building permit in Hamilton County:
OH, interior basement waterproofing (sealants, interior drain tile, sump pump replacement) typically does not require a permit. Exterior excavation and foundation repair do require a building permit.
OH, cosmetic bathroom updates (new tile, paint, vanity replacement in the same location) do not require a permit as long as no plumbing or electrical changes are made.
OH, a small concrete slab (under 200 sq ft, no structure on top) such as a small pad for trash bins or an AC condenser does not require a permit per 2019 RCO R105.2.
OH, freestanding decks not more than 30 inches above grade are exempt from a building permit under the 2019 Residential Code of Ohio (RCO) Section R105.2. Township zoning setbacks still apply, so confirm placement with Hamilton County Buildings and Inspections before building.
OH, interior demolition of non-structural elements (cabinets, finishes, non-load-bearing walls under 100 sq ft) typically does not require a permit. If walls being removed may be load-bearing, a building permit is required and the inspector should review first.
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Hamilton County Building Department
Nearby Cities in Ohio
Permit Guides
Read our in-depth guides for common home improvement projects: