In November of 2022, the Cook County Assessor’s Office released a report on the impact of the Board of Review’s appeal decisions on the property tax bills that Chicagoans will be receiving in the coming weeks. The report reflects changes due to appeals filed at the Board of Review, which will affect tax bills that property owners will receive in the second installment of 2022 tax bills.

Assessments released by the Assessor’s Office lowered Chicago residents’ share of assessed value, which is the basis of their share of property taxes, by 5.9%. 

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in South Chicago Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in North Chicago Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in Lake View Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in Lake Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in Jefferson Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in Hyde Park Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in West Chicago Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

Below are the Cook County Assessor’s 2021 revaluation methodology worksheets for each income-producing PIN (Property Index Number), class 300 and above, in Rogers Park Township. The Assessor’s goal in publishing this data for the first time is that property owners can understand the CCAO’s approach to mass appraisal of their income-producing property.

There is a separate methodology Report Tab for each property group. Find a property group below, then download the file below to view valuation details.

The excel file below is the Cook County Assessor's Property Tax Rate Simulator tool. The tool simulates effective tax rates and total property tax bills for user-input property values for single-family homes and condos (200-class), commercial apartments (300-class), and commercial and industrial (500-class) properties in the City of Chicago. To accomplish these simulations, the workbook contains data and models to demonstrate how individual assessments, levies, and overall tax bases interact to produce a Chicago tax bill.