Property tax hike coming for Cook County

What's happening: Property tax bills, a major expense for most homeowners, should be hitting mailboxes this week.

Zoom in: The amount to be paid by all Cook County homeowners rose by $599.1 million — about two-thirds of the overall increase, according to a new analysis by Cook County Treasurer Maria Pappas' office.

• Commercial owners are picking up about a third of the increase, the analysis said.

👀 The intrigue: The median residential bill in the north and northwest suburbs rose by 15.7% — the largest increase in at least 30 years.

What they're saying: A spokesperson for the Cook County Assessor's office said decisions by the County's Board of Review contributed to the bigger hit to homeowner bills: Successful appeals dropped non-residential taxes by 20% and residential by only 2%.

• "Because growth in residential properties outpaced non-residential assessed values, this shifted who pays what share of property taxes," the spokesperson tells Axios.

🧠 Be smart: It's not just changes in building values that affect property taxes.

• The Treasurer's report found that levies for school districts were the primary driver of the latest increases.

• TIFs and the recent "recapture" law that lets taxing bodies recoup money lost when people successfully appealed their bills the previous year also contributed to the increases.

Between the lines: "Out of 940 units of government in Cook County, 676 increased their levies," treasurer Maria Pappas tells Axios. "Read your bill to see where the monies go."

What's next: Payments on the new bills are due Dec. 1.

• The assessor divides the county into three parts — the city, northern burbs and southern burbs — and reassesses each every three years. Next year they take on the suburbs south of North Avenue.