Is My Cook County Home Overassessed?
Find out in seconds if your property is being taxed at a higher value than it's actually worth—and how much you could save by appealing.
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What Does "Overassessed" Mean?
Your property is overassessed when the Cook County Assessor's Office values your home at more than its actual market value. This means you're paying property taxes on an amount higher than what your home is actually worth.
For example, if your home is worth $300,000 but assessed at $350,000, you're paying taxes on that extra $50,000—which could cost you hundreds or even thousands of dollars per year.
The Problem
Cook County reassesses 1.8+ million properties every 3 years. With that volume, mistakes happen—and those mistakes cost homeowners money. Many properties are overassessed by 10-30% or more.
Signs You Might Be Overassessed
Your Assessment Increased Significantly
If your assessment jumped 20%+ while similar homes in your area didn't, you may be overassessed.
Neighbors Sold for Less
If similar homes nearby sold for less than your assessed value, that's a strong signal you're overassessed.
Your Home Needs Work
If your home has deferred maintenance, needed repairs, or outdated features, the assessment model may not account for these properly.
Property Characteristics Are Wrong
Incorrect square footage, bedroom/bathroom counts, or lot size can lead to overassessment.
How Our Analysis Works
When you look up your property, we instantly:
- 1Find comparable sales - We identify recent sales of similar homes in your neighborhood
- 2Compare assessments - We see how your assessment compares to similar properties
- 3Calculate market value - We estimate your home's actual market value using multiple methods
- 4Show potential savings - We calculate how much you could save if you successfully appeal
- 5Assess appeal strength - We give you a case strength score and win probability
What You'll Get in Your Analysis
Market Value Estimate
See how much your home is actually worth based on recent comparable sales
Potential Tax Savings
Calculate exactly how much you could save per year if you successfully appeal
Case Strength Score
Get a win probability score and see how strong your appeal case is
Comparable Properties
View similar homes that sold recently and how they compare to your assessment
Professional Report
Download a professional PDF report you can submit with your appeal
Action Plan
Get recommendations on whether to appeal and how to proceed
Why This Matters
Property taxes are one of the largest expenses for homeowners. If you're overassessed, you're essentially paying more than your fair share—and that adds up over time.
Example:
If your home is overassessed by $50,000 and your tax rate is 2%, you're paying an extra $1,000 per year in property taxes. Over 10 years, that's $10,000 you could have saved.
The good news? You can appeal your assessment. And if you have strong evidence (like our analysis provides), you have a good chance of winning and reducing your tax bill.
Ready to Find Out If You're Overassessed?
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Want to Learn More?
You Got Your Assessment - Now What?
Learn what to do when you receive your assessment notice
Appeal Timeline & Checklist
Understand the complete appeal process and deadlines
DIY vs. Hiring Help
Decide whether to appeal yourself or hire a professional
Reassessment Schedule
Find out when your township is up for reassessment