Available Filings



To create a new filing, click on a filing type below.

    CCAO - COE (Exemptions)

  • For tax years 2021-2023

    • CCAO - Exemptions

  • This application is for homeowners applying for exemptions for tax year 2024. The normal filing period has ended, and you are now submitting a Certificate of Error. The Certificate of Error process provides homeowners an opportunity to redeem missing exemptions for the current tax year. If you are approved, the savings from the exemption will either appear on the second installment tax bill or an adjusted tax bill that will be mailed shortly after.
  • This application is a new feature for homeowners who received the Low-Income Senior Freeze Exemption last year and need to reapply for the 2024 tax year. The purpose of this filing is to make the process quicker for homeowners who simply need to update their information from the previous year. The normal filing period has ended, and you are now submitting a Certificate of Error. The Certificate of Error process provides homeowners an opportunity to redeem missing exemptions for the current tax year. If you are approved, the savings from the exemption will either appear on the second installment tax bill or an adjusted tax bill that will be mailed shortly after.
  • This application is a new feature for homeowners who received the Veterans with Disabilities Exemption last year and need to reapply for the 2024 tax year. The purpose of this filing is to make it quicker for homeowners who simply need to update their information from the previous year. The normal filing period has ended, and you are now submitting a Certificate of Error. The Certificate of Error process provides homeowners an opportunity to redeem missing exemptions for the current tax year. If you are approved, the savings from the exemption will either appear on the second installment tax bill or an adjusted tax bill that will be mailed shortly after.

    • CCAO - Exempt Properties

  • This filing is only for exempt properties pursuant to 35 ILCS 200/15-10. This filing can also be used to report any changes throughout the 2025 assessment year.

    • CCAO - Permits

  • CCAO - Municipality and Township Permits Entry (2026)
  • CCAO - City of Chicago Permits Entry (2026)

    • CCAO - Valuations (Property Characteristics)

  • Cook County Assessor's Office 2026 Residential Property Characteristics Update