Next window Opens in 106 days (2026-08-01) · Barrington, Berwyn, Bloom, Bremen +34 more · 12 townships in triennial reassessment this year

One flat fee.
Keep every dollar you save.

We score every home in Cook County so you only file when you can win. Contingency firms keep 25–35% of your refund. We don't — flat fee, either way. File it yourself, or hand it to our attorney.

Live · High-conviction cases this cycle
Anonymized · Random sample
0.00M
Homes scored,
every quarter.
0
High-conviction cases
this cycle.
0%
Precision at our
top threshold.
0
Cook County BOR reductions
granted in 2024.
Township window

When does your
township open?

Cook County opens each of 38 townships on its own Board of Review schedule. Enter your PIN — we'll tell you the exact day your window opens, and email you when it does.

No spam. One email when your window opens, one reminder 7 days before it closes. That's it.

Enter any Cook County PIN above to see your exact appeal window.
The appeal, end to end

Five steps.
Two of them are ours.

01
Assessment mailed
02
We score your PIN
03
You buy a packet
04
File with Board of Review
05
Decision + refund
Step 01

Assessment mailed

Feb–Sep · by township

Cook County reassesses each township every three years. Your new assessed value arrives by mail from the Assessor's office. The number on that card drives your tax bill for the next three years — so this is the moment to check whether it's defensible.

Your move · read the number carefully
60 seconds

From PIN to packet.
On the right.

The shortest possible tour. Each screen auto-advances in five seconds — hover the stage to pause.

The full walkthrough
Look up your home
16-06-102-
Free · no signup · ten seconds
Conviction score
91
HIGH confidence · 7 of 9 signals firing
Win probability
81%
Est annual savings
$1,840
Evidence packet · 5 pages
Comps · History · Ratio study · BOR form
Filed with the Board of Review
Decision typically in 60–180 days

One flat fee.
Choose how much you want to touch.

Every tier ships a file-it-yourself evidence packet. Add Concierge at checkout and a partner Illinois attorney files it for you. No contingency — ever.

Worth a look
50/50 odds, calibrated.
$39
one-time, per property
  • Calibrated win probability
  • Two comparable sales
  • Pre-filled BOR appeal form
  • Filing instructions + deadlines
Look up your home
Strong case
55–70% win probability.
$99
one-time, per property
  • Five ranked comparable sales
  • Ten-year assessment history
  • Township ratio study
  • Full evidence packet (PDF)
  • Pre-filled appeal form
Look up your home
High conviction
70%+ wins. Guaranteed.
$199
one-time, per property
  • Everything in Strong case
  • Ten ranked comparable sales
  • Equity (sister parcel) analysis
  • BOR decision precedents
  • Credit-forward guarantee
Look up your home
Optional add-on · +$79

Click once.
Forget until the check comes.

Add Concierge at checkout. A partner Illinois attorney reviews your packet, signs as counsel of record, and files with the Board of Review. You never open the portal.

Contingency services like Ownwell charge 25–35% of your savings every year for this convenience. On a typical $1,200 reduction, that's $300–$420 — versus our flat $79, one time.

See the full pipeline
Concierge
+$79
  • ·Licensed IL attorney as counsel of record
  • ·E-sign one POA, we handle everything else
  • ·Attorney files with the Board of Review
  • ·Email confirmation + filing receipt PDF
  • ·Status tracker through decision

Available as an add-on to Tier A and Tier B. Limited-scope attorney engagement covers the Board of Review filing only. Any contested appeal (PTAB, Circuit Court) is separately engaged.

Built on hard data.
Tuned by experience.

Proprietary analytics combine public assessment records with a calibrated machine learning layer trained on years of historical Board of Review outcomes — so we know which cases actually win, not just which ones look good on paper.

Read the methodology
Top-bucket calibration drift
8bps

Predicted (0.869) tracks actual (0.861) within eight basis points in our top win-probability bucket.

01
We score

Every quarter we re-score 1.58 million Cook County homes from public records.

02
You preview

Look up your PIN. See conviction score, win probability, savings, appeal window. Free.

03
You file

Pick your tier, get a polished PDF packet, file with the Board of Review yourself.

If we're wrong,
next year is on us.

Lose your Tier A appeal at the Board of Review? Your $199 is automatically credited to next year.

Read the details ›