Assessor [Archived 05-11-2022] - Residential Modeling Characteristics (Chicago)

This data set contains characteristic data points used by the Cook County Assessor in the 2021 Chicago reassessment to produce initial estimates of the current market value of most Chicago homes (single-family homes, small multi-family homes, and condo units). You can use the "Filter" option to search for a property's PIN or address, and see what data the Assessor’s Office had about a home’s characteristics at the time of modeling*. To learn more about how the 2021 model used this data, read about our public <a href="https://gitlab.com/ccao-data-science---modeling/models/ccao_res_avm" target=_new>Residential Automated Valuation Model here</a>. Chicago properties not listed here are reassessed using different modeling procedures.

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<b>*Important Note:</b> This dataset is, at the time of publication, an early snapshot of data. Data about a home might change later in the assessment process this year as Assessor’s Office staff and analysts review these properties. After this review, updated characteristics and market values are mailed to homeowners. If the data listed on the assessment notice is incorrect, an appeal can be filed to provide the correct characteristics.

本数据集囊括了库克县评估员在2021年芝加哥重新评估过程中用以生成大多数芝加哥住宅（包括单户住宅、小型多户住宅和公寓单位）当前市场价值初步估计的特征数据点。您可通过“筛选”选项搜索房产的唯一识别码（PIN）或地址，查阅评估办公室在建模时关于住宅特征的有关数据。欲了解2021年模型如何使用这些数据的更多信息，请参阅我们公开的住宅自动估值模型<a href="https://gitlab.com/ccao-data-science---modeling/models/ccao_res_avm" target=_new">此处</a>。未在此处列出的芝加哥房产将采用不同的建模程序进行重新评估。<br><br><b>重要提示：</b>截至发布时，本数据集为数据的一个早期快照。随着评估办公室的员工和分析师对这些建筑物的审查，有关住宅的数据可能会在今年的评估过程中发生变化。审查结束后，更新后的特征和市场价值将通过邮件寄送给业主。如果评估通知上的数据有误，可提出申诉以提供正确的特征。