Government and open-data feeds only — not MLS. Live tables below use the Cook County Open Data Socrata API (browser-safe, no API key). Sheriff auctions and HUD Home Store do not publish a simple cross-origin JSON API; those sections open official sites and explain limits.
Assessor — Assessed Values (uzyt-m557) and Parcel Universe current year (pabr-t5kh).
Sample: mortgages & quit claims from the archived Recorder extract (4f2q-h3b7, 2013–Mar 2015). For current documents, use Clerk recording search.
Lis pendens and amended/corrected foreclosure notices from the same Recorder extract (4f2q-h3b7). Circuit Court Chancery holds case files; Clerk portals vary.
The Cook County Sheriff maintains sale calendars and outcomes at foreclosure.ccsheriff.org. There is no documented public JSON endpoint for in-browser fetch (CORS); open the site in a new tab or embed only if their headers allow.
HUD Home Store is the official listing site. It does not expose a no-auth CORS JSON API for arbitrary front-end use; integration usually requires server-side scraping or a paid aggregator — not done here.