Data · dataset · 2022
Assessor - Parcel Sales
Listed in Open Data Portal for Cook County Government
Update 10/31/2023: Sales are no longer filtered out of this data set based on deed type, sale price, or recency of sale for a given PIN with the same price.
Description
If users wish to recreate the former filtering schema they should set sale_filter_same_sale_within_365 , sale_filter_less_than_10k , and sale_filter_deed_type to False. Parcel sales for real property in Cook County, from 1999 to present.
The Assessor's Office uses this data in its modeling to estimate the fair market value of unsold properties. When working with Parcel Index Numbers (PINs) make sure to zero-pad them to 14 digits. Some datasets may lose leading zeros for PINs when downloaded.
Read the rest (3 more)
Sale document numbers correspond to those of the Cook County Clerk, and can be used on the Clerk's website to find more information about each sale. NOTE: These sales are filtered, but likely include non-arms-length transactions - sales less than $10,000 along with quit claims, executor deeds, beneficial interests are excluded. While the Data Department will upload what it has access to semi-monthly, sales are reported on a lag, with many records not populating until months after their official recording date.
Current property class codes, their levels of assessment, and descriptions can be found on the Assessor's website . Note that class codes details can change across time. For more information on the sourcing of attached data and the preparation of this dataset, see the Assessor's Standard Operating Procedures for Open Data on GitHub.
Read about the Assessor's 2025 Open Data Refresh.
Links
Get the data
- CSV datacatalog.cookcountyil.gov/api/views/wvhk-k5uv/rows.csv?accessType=DOWNLOAD ↗
download · from datacatalog cookcountyil gov
Where it is published
- datacatalog.cookcountyil.gov /Property-Taxation/Assessor-Parcel-Sales/wvhk-k5uv ↗
Open Data Portal for Cook County Government dataset page
landing page · from datacatalog cookcountyil gov
Catalogue records · 1
- SODA API datacatalog.cookcountyil.gov/resource/wvhk-k5uv.json ↗
metadata API · from datacatalog cookcountyil gov
Topics
- Stated by source
- Property & Taxation
- From keywords
- Economics & Finance
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Open Data Portal for Cook County Government | wvhk-k5uv | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| concepts[field].local:field:economics-finance | mapping · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| concepts[topic].socrata_category:datacatalog_cookcountyil_gov:property-taxation | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| created_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| description | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | /resource/description |
| publication_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | |
| title | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 | /resource/name |
| updated_date | source · datacatalog cookcountyil gov | connector:datacatalog_cookcountyil_gov@1.0.0 |