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Jurisdiction directory

Ohio home project permits by county

Many Ohio households live outside city limits, where the county building department — not a city — issues the permit. 12 Ohio counties, covering the state's largest jurisdictions, are inventoried here.

Model reviewed August 2026

Counties covered

12

largest jurisdictions first

Municipalities tracked

14

in Ohio

Population covered

6.7M

residents in listed counties

Code basis

Statewide

Ohio Residential Code, based on the IRC

Featured counties

The largest and most active permit jurisdictions in the state.

Cuyahoga County1,233,000 residents · seat ClevelandFranklin County1,326,000 residents · seat ColumbusHamilton County830,000 residents · seat CincinnatiSummit County537,000 residents · seat AkronMontgomery County537,000 residents · seat DaytonLucas County428,000 residents · seat ToledoButler County390,000 residents · seat HamiltonStark County374,000 residents · seat CantonLorain County314,000 residents · seat ElyriaWarren County248,000 residents · seat LebanonLake County232,000 residents · seat PainesvilleMahoning County227,000 residents · seat Youngstown

All Ohio counties we cover

12 counties, largest first.

Franklin CountySeat: Columbus · 1,326,000 residentsCuyahoga CountySeat: Cleveland · 1,233,000 residentsHamilton CountySeat: Cincinnati · 830,000 residentsSummit CountySeat: Akron · 537,000 residentsMontgomery CountySeat: Dayton · 537,000 residentsLucas CountySeat: Toledo · 428,000 residentsButler CountySeat: Hamilton · 390,000 residentsStark CountySeat: Canton · 374,000 residentsLorain CountySeat: Elyria · 314,000 residentsWarren CountySeat: Lebanon · 248,000 residentsLake CountySeat: Painesville · 232,000 residentsMahoning CountySeat: Youngstown · 227,000 residents

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.