Assessor, Office of the

The Cook County Assessors Office is responsible for determining fair assessments on all residential, commercial and industrial property in Cook County. Each parcel is reassessed once every three years. The Assessors Office also administers a variety of exemptions providing relief to Senior citizens and all Cook County Homeowners, as well as incentives encouraging development throughout Cook County. 

For more information, visit the Assessors website at Cook County Assessor or visit or contact one of the local offices listed at the left.