# Property data notes ## What is Property Finder? Property Finder is one of Chicago Cityscape's premier features, to easily locate properties in Cook County that meet any number of our members' custom criteria. Property Finder is most powerful when looking at in a Place Report; fewer filters are available in the Property Report version of Property Finder. Property Finder has dozens of filters to narrow the results to include only the properties that meet your exacting criteria. Enable as many filters as needed; there are a minimal number of filters that may have conflicts with other filters, which are explained next to each filter. ## Update schedule We update property information frequently; most properties are updated quarterly but frequently sought properties may be updated more often. Cook County agencies update most tax information and property classifications after the second tax bill goes out; assessment information is updated when a triad is re-assessed; a property's taxpayer name is usually updated within a month after a closing or a taxpayer submits a name or address change. ## Sources Property Finder data comes from several sources: Cook County Treasurer, Cook County Assessor, Cook County Clerk (formerly the Recorder of Deeds), the Cook County Land Bank Authority, City of Chicago, and many other sources to be able to populate our filters (transit, ARO maps, etc). Review our [Sources](https://www.chicagocityscape.com/sources.php) and search for "Property Finder" to locate other sources that contribute to Property Finder. ## Other notes - This feature was originally supported by [Metropolitan Planning Council](http://www.metroplanning.org/) in 2015. - Learn how to purchase all of our Cook County data in the [Map & Data Store](https://www.chicagocityscape.com/data.php).