Resident Services


All exemptions applications (Senior, Homeowner’s, etc;) are due into to the Cook County Assessor by April 10th.  Exemptions can be applied for online at:

Documents and Forms

The Assessor's Office can provide residents assistance with documents such as:
  • Assessed Valuation Appeals filed with the Cook County Assessor, the Cook County Board of Review, or the Illinois Property Tax Appeal Board
  • Certificate of Error Applications
  • Homeowner Exemption Applications
  • Name and address change on tax bills

Sidwell Maps & Mapping Services

We also maintain Sidwell Maps and provide assistance with:
  • Locating property
  • Providing legal descriptions
  • Verifying Permanent Index Numbers

Helpful Information

Our office is happy to provide residents information about:
  • Comparable property values
  • Local tax rates
  • Researching Permanent Index Numbers
  • Tax estimates for new home buyers

Senior Services

In addition to our other resident services, our office can assist Seniors with documents such as:
  • Circuit Breaker Applications
  • Senior (Homestead) Exemption Applications
  • Senior Freeze Applications
  • Tax Deferral Applications