The Cook County Assessor’s Office released a new tool that gives Cook County homeowners unprecedented insight into the data that drives a home’s assessment. The Home Value Report is available now at www.cookcountyassessoril.gov/home-value-report. It shows homeowners the top five most significant sales and other details the CCAO’s residential assessment model used to value their house.  These other details include physical characteristics like square footage and age, as well as location features like school district, distance to transit, airport noise, and flood risk score. Every year, the Assessor’s Office reassesses one-third of Cook County. To do this for residential properties, the Assessor’s Data team develops a statistical model. This is a computer program that uses vast amounts of data to learn real estate trends.  These trends are used to estimate current property values. The team refines the model so that its results accurately, uniformly, and equitably follow the market.  The Home Value Report provides accessible information about how the model reached its estimates.  The Home Value Report currently contains data for the 2024 reassessment of Chicago and the 2025 reassessment of the north suburbs.

Photo Credit: Cook County Assessor’s Office