Building & Zoning Department

RCO (Residential Code of Ohio) 1, 2, 3 Family 2019.
OBC (Ohio Building Code) - 2017
NEC (National Electrical Code) – 2017
Warren County Rural Zoning Code (Franklin, Harlan, Turtlecreek, Union, Washington Townships
Warren County Flood Development Regulations Code (unincorporated areas)
Warren County enforces the RCO in all of unincorporated areas of the county as well as in the Villages of Corwin, Maineville, Morrow, Waynesville, South Lebanon and City of Lebanon.
Warren County enforces the OBC in all of the unincorporated areas of the county as well as in the Villages of Corwin, Maineville, Morrow, South Lebanon, Waynesville and City of Lebanon.
Warren County enforces the NEC in all of the unincorporated areas of the County as well as in the Villages of Corwin, Maineville, Morrow, Pleasant Plain, South Lebanon, Waynesville and City of Lebanon.
For all other villages/cities within the County limits, please contact those departments.