Data sources

Every dataset Property Sentinel monitors, the original source it comes from, and how often we refresh it. Sources marked periodic are reloaded as the publisher issues updates.

Property Sentinel aggregates publicly available government records and independent open datasets. All source datasets remain the property of their respective publishers and are subject to those publishers' terms of use. Data is presented for informational purposes only and is provided without warranty of accuracy, completeness, or timeliness; records may contain errors or lag the underlying source. Verify critical details against the original source before relying on them. Property Sentinel is not affiliated with, endorsed by, or sponsored by the City of Chicago, Cook County, the U.S. Department of Housing and Urban Development, or Inside Airbnb.