Illinois Incentives Other Special Property Real Estate assessed Valuation appeal is a process which allows property owners to dispute the assessed value of their real estate for the purpose of property tax reduction. Property owners can use this process to appeal their property’s assessed value if they believe it is too high. The appeal must be based on a valid reason, such as a new addition to the property, a decrease in the market value, or a change in the zoning. There are three types of appeals: a formal appeal to the local board of appeals, an informal appeal to the county assessor, and an appeal to the Illinois Property Tax Appeal Board. In each case, the property owner must provide evidence to support their claim that the assessment is too high. If successful, the property owner will receive a reduction in their property taxes.




