Every analysis we publish about Chicago housing, in one place. Each one names its source. Most use the sale records the Cook County Assessor publishes from recorded deeds; city permit, license, notice and hearing files; and Census population estimates. A few read forecast or search-interest series and say so. The sale figures use no listings data and no modeled home values.
Sale prices and the company-buyer share are from the county file as retrieved September 30, 2026, with sales through July 14, 2026. Every analysis carries its full sources and as-of dates.
What homes actually cost
Market change, area by area
Forty-three community areas, by the numbers
What gets built
The bigger picture
Renters and the rules
How this hub works
Analyses are added as they publish, and the numbers above refresh with each update; annual figures get a full revisit each winter, and counts for the most recent years are restated as the county adds late sales. Methods are disclosed inside every piece, including the screens we apply to raw records and the thresholds where we suppress thin data rather than guess. If you spot an error anywhere in the cluster, corrections come first.
