Cook County's unfair home valuations result in a property tax system that harmed the poor and helped the rich

Chicago has long been a city divided by race and class, a metropolis with starkly different crime rates, economic realities and educational opportunities depending on where you live. But there’s another division in Chicago and Cook County, one that for years has gone unexamined even as it pits rich against poor.

An unprecedented analysis by the Tribune reveals that for years the county’s property tax system created an unequal burden on residents, handing huge financial breaks to homeowners who are well-off while punishing those who have the least, particularly people living in minority communities.

The problem lies with the fundamentally flawed way the county assessor’s office values property.

The valuations are a crucial factor when it comes to determining property tax bills, a burden that for many determines whether they can afford to stay in their homes. Done well, these estimates should be fair, transparent and stand up to scrutiny.

But that’s not how it works in Cook County, where Assessor Joseph Berrios has resisted reforms and ignored industry standards while his office churned out inaccurate values. The result is a staggering pattern of inequality. Read more by the Chicago Tribune's Jason Grotto.