Chicago Housing Related Public Data
Chicago Buliding Permit Data
This dataset includes information about currently-valid building permits issued by
the City of Chicago from 2006 to the present. Building permits are issued subject to
payment of applicable fees. If building or zoning permit fees show as unpaid, the permit is not valid.
Data Source: https://data.cityofchicago.org/Buildings/Building-Permits/ydr8-5enu/about_data
Cook County Assessor Model & Valuation Data Release
This site saved the publicly available data from Cook County Assessors' office (CCAO) for educational use, such as class or non-profit research only.
Cook County Assessor's Residential Sales Data:
This is a data set of residential sales from 2013-2019 in Cook County.
Since this is a data set of sales, not properties, individual PIN numbers may appear twice in a given year. We have joined
this sales data with characteristic data from the year of the sale. The same property selling in two different years may
have different characteristics.
Cook County Assessor's Residential Property Characteristics:
This is a data set of all residential properties in Cook County and their characteristics.
This data is unique by PIN and year, except for properties that have multiple buildings on them.
In those cases, there will be multiple lines for a PIN in a given year.
Cook County Assessor's Residential Assessments:
This is a data set of all residential property assessments. The 'Assessment Roll' is produced
over roughly a 12 month period of time. First, our statistical modeling pipeline produces initial
estimates of home values. Then, analysts review these values and make corrections where appropriate,
and the values are mailed to taxpayers. Taxpayers then have the opportunity to appeal, after which
the Assessor certifies the Assessment Roll.
Taxpayers may then appeal to the Board of Review, after which the Board certifies the roll, and tax bills are sent to taxpayers.
source: https://datacatalog.cookcountyil.gov/stories/s/p2kt-hk36
Directory Tree
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[ 473M] Chicago_BuildingPermit_2006_2024.csv
[ 312M] Cook_County_Property_Characteristics2021.csv
[ 605M] Cook_County_Property_Characteristics2022.csv
[ LINK] Cook_County_Property_Characteristics Data Description
[ 1.8G] Cook_County_Property_Assessments.csv (2010-2020)
[ 550M] Cook_County_Residential_Assessments.csv (2010-2020)
[ 214M] Cook_County_Property_Sales_1997_2020.csv
[ 1.9G] Crimes_Chicago_2001_2021.csv