If your property is inside Hamilton city limits, your permit application goes to Hamilton Building Department, not the Butler County Building Department. Properties just outside city limits typically fall under county or township jurisdiction. If you're not sure which applies to your parcel, check with your local assessor's office or look up your property on Butler County's GIS map. We include a full engineered plan set with every kit that meets what both city and county departments typically ask for — so either way, you're covered.

