Cook County Property Tax Appeal: Seeking Relief from Excessive Taxation

Property taxes are a significant financial obligation for commercial real estate owners in Cook County, Illinois. The county’s property tax system relies on the assessed value of properties to calculate tax liabilities. Cook County operates on a triennial reassessment period. However, there are instances when property owners believe that their assessments are inaccurate or unfairly high, leading to excessive tax burdens. In such situations, Cook County offers a property tax appeal process, providing property owners with a means to seek relief. In this article, we will explore the Cook County property tax appeal procedure, its significance, and how it benefits property owners.

Understanding The Tax Appeal Process

The Cook County property tax appeal is a formal process that allows property owners to challenge their property’s assessed value if they believe it is incorrect or unfairly inflated. The appeal process provides an opportunity for property owners to present evidence supporting their claim to have the assessed value adjusted, which, in turn, can lead to a reduction in their property tax liability.

Initiating the Appeal Process

To initiate the Cook County property tax appeal, property owners must follow these steps:

  1. Review Assessment Notices: Cook County sends out property assessment notices to property owners annually. Property owners should carefully review these notices to ensure the accuracy of the assessed value. If there are concerns about the assessment, it may be a suitable time to consider an appeal.
  2. Gather Evidence: To build a strong case for the appeal, property owners should gather relevant evidence. This may include recent property appraisals, comparable property sales data, or documentation of any property-specific factors that may have been overlooked in the initial assessment.
  3. File the Appeal: Property owners must file their appeal within the designated timeframe, typically following receipt of the assessment notice. The appeal filing should include all relevant evidence and supporting documentation.

Review and Decision

Once the appeal is filed, the Cook County Assessor’s Office or the Cook County Board of Review will review the evidence and make a decision. If the evidence supports the property owner’s claim of an inaccurate assessment, the assessed value may be adjusted, resulting in a lower property tax liability.

Significance of Cook County Property Tax Appeal:

The Cook County property tax appeal process holds several significant benefits for property owners:

  1. Equitable Taxation: The appeal process ensures that property owners are not unfairly burdened with excessive property tax liabilities. By challenging inaccurate assessments, property owners can seek a more equitable distribution of the tax burden.
  2. Financial Relief: A successful property tax appeal can lead to significant financial relief for property owners. Lower property tax bills free up funds that can be redirected to other essential expenses or investments.
  3. Market Value Accuracy: Through the appeal process, property owners can contribute to the accuracy of property assessments in the county. This, in turn, helps maintain the stability and fairness of the real estate market in Cook County.


Our team of Cook County Tax Consultants and Attorney relationships represents billions of dollars annually in commercial and complex properties.