Building Departments in Cook County, Illinois

The county building department in Cook County administers construction permits and enforces building codes for unincorporated areas and municipalities that contract county services rather than maintaining their own building divisions. There are 43 Building Departments locations in Cook County, Illinois.

Property owners in unincorporated Cook County should verify with the county building department whether their parcel falls under county or municipal jurisdiction before submitting permit applications, as this affects which office handles the review and which codes apply.

Contractors and property owners in Cook County should keep copies of all issued permits, approved plans, and inspection sign-off cards at the job site for the duration of construction. Final inspection requests must be scheduled in advance, and the certificate of occupancy is issued only after all required inspections pass.

You may also find Building Departments locations in neighboring counties including Cook.