Commercial and residential property owners in Illinois can save thousands of dollars by appealing their property tax assessments. Since Cook County does not raise assessments based on whether an appeal was filed and there is no cost to challenge an assessment, property owners have nothing to lose by filing an appeal. Between 30 and 60 … Read More ›


The Cook County Assessor wants residential and commercial property owners to challenge their assessments because appeals are vital for accuracy. There are 1.8 million properties in Cook County, which makes it difficult to account for variances. Fewer than 5 percent of property owners file appeals even though 60 percent of the properties are over-assessed.

Why File … Read More ›


To find a Property Index Number (PIN), owners can look at their deed, tax bill, or other documentation from when the real estate was purchased. For those who are unable to locate these documents, the Cook County Assessor’s website is also an excellent source. Cook County uses this PIN, as a way to identify a … Read More ›