2026 appeals are open now. Lyons closes Sep 3 · Northfield Sep 4 · Barrington Sep 23 · Bremen Sep 24 · Lemont Sep 29 · Calumet Oct 2. Your window is only ~30–45 days — miss it and you wait a year.
Cook County · 2026 appeals

Your neighbors' assessments are public record. Are you paying more than they are?

Type your address. VineWorth instantly compares your Cook County assessment to similar homes on your block — and shows your estimated savings if you appeal. No lawyer needed.

Please enter your property address.

Your real number in seconds. Free — no credit card, no account. Just your address.

How it works

Three steps. Two of them are free.

1

Enter your address (free)

VineWorth pulls your home's assessment and compares it against similar homes in your assessment neighborhood, using the county's own public data.

2

See your estimate (free)

Instantly, you get your Assessment Check: your assessed value per square foot vs. comparable homes, and your estimated annual savings if appealed.

3

Get your appeal ($124 $99)

If the numbers support an appeal, VineWorth automatically generates your complete package — comparable properties, the uniformity argument in the county's preferred format, and step-by-step filing instructions. You file online in about 10 minutes. Filing is free.

See it in action

A real Cook County home, checked live — the actual VineWorth report, with real assessment data, comparable homes, and estimated savings.

vineworth.com — your report

Sample home shown with public data. Check your own address →

Why this works

You don't need the county to be "wrong" to win.

If your home is assessed higher per square foot than comparable homes nearby, Illinois law says you have a case — it's called lack of uniformity, and it's the most common way residential appeals win. The evidence is sitting in public records. Most homeowners never look.
51% / 58%

of residential appeals to the Board of Review win a reduction — and self-filed homeowners win even more often (58%).

Data, not hearings

Most residential appeals are decided on the evidence — you almost never have to appear.

Even if it went down

What matters isn't whether your value rose — it's how you compare to similar homes.

What you get for $99

A complete, ready-to-file appeal package.

  • ✓ Comparable-property analysis (the county's own data, up to 6 comps)
  • ✓ Complete appeal document, formatted the way the Assessor's office expects
  • ✓ Comparable PINs ready to paste into the county's online form
  • ✓ Step-by-step filing instructions for your township's window
  • ✓ Second-chance support: if the Assessor says no, the same case refiles at the Board of Review
  • ★Honest-numbers promise: if the analysis shows you don't have a case, VineWorth tells you — and you don't pay.
$99
🎟 Founding-customer price
Law firms typically charge 33–50% of your first-year savings — often $300–800 on a typical win. We charge a flat $99, every year the reduction holds — keep far more than a lawyer leaves you.
FAQ

Straight answers.

Is this legal? Do I need a lawyer?
Homeowners can file their own Cook County appeals for free, no lawyer required. VineWorth automatically generates your evidence and paperwork — you file it in your own name. VineWorth is an automated property-tax appeal platform, not a law firm.
What if my appeal is denied?
The Assessor's decision isn't the end — every case can be refiled at the Board of Review, a separate agency, using the same evidence. Your VineWorth package includes instructions for both. No outcome is guaranteed (anyone who guarantees one is lying to you).
Will appealing raise my taxes or trigger an inspection?
Filing an appeal with the Assessor is free, takes about 20 minutes online, and is simply a request to correct the accuracy of your assessment — homeowners appeal to seek a reduction. An inspection isn't automatic: a field check is only sometimes requested and is normally exterior-only. We'll flag it in your report if anything about your case might invite one.
How much can I actually save?
Depends on how over-assessed you are and your town's tax rate. In the south & west suburbs, a typical successful residential reduction works out to roughly $400–$1,500/year — more on higher-value homes. Your free estimate shows your own number before you pay anything. (Estimates use the latest state equalizer and tax rates; they're not guarantees.)
What's the deadline?
Each township gets ~30–45 days from when the Assessor opens it. 2026 south & west windows are opening now, township by township. Enter your address and we'll tell you your window.
I already got a reassessment notice. Is that my tax bill?
No — it's the proposed value your future bills will be based on. The time to appeal is now, before it becomes your bill.

See your number before you pay anything.

Your free Assessment Check in seconds. Just your address.