Board of Review Appeal Decision History

Assessed values must be adjusted by their level of assessment (prodassets.cookcountyassessor.com/s3fs-public/form_documents/classcode.pdf) to arrive at market value. Note that levels of assessment may have changed throughout the time period covered by this data set. • This data set will be updated when each township is certified. However, note that there may be discrepancies between the Board of Review’s data and the Assessor's site and this data set, as each pull from a slightly different system. • Current property class codes, their levels of assessment, and descriptions can be found on the Assessor's website (prodassets.cookcountyassessor.com/s3fs-public/form_documents/classcode.pdf).

Note that class codes details can change across time. • The Change Reason and No Change Reason fields are only populated starting with the 2015 year data. All data provided here is prepared for internal purposes by the County of Cook only is provided to the public as a courtesy. While efforts have been made to be as accurate as possible, Cook County provides the data for personal use “as is”.

The data is not guaranteed to be accurate, correct, or complete. Information provided should not be used as a substitute for legal, business, tax, or other professional advice. The recipient/viewer should contact appropriate regulating agencies to determine accuracy or suitability of the data for a particular use.

This data may not be used in states that do not allow the exclusion or limitation of incidental or consequential damages. Cook County or its staff assume no liability whatsoever for any losses that might occur from the use, misuse, or inability to use its geospatial data, maps or websites. All materials appearing on a map, geospatial data or County web site are transmitted without warranty of any kind and are subject to the terms on this disclaimer.