Before you buy
A research guide, not a filed appeal
Optional research guide: $9.99 one-time. Checking is free. County filing is free. We never charge a percentage of tax savings.
The free check previews two sales. An eligible guide unlocks every selected sale, its property number (PIN), recorded document number, and why it was selected.
Sample report — demonstration only. All property and sale details below are fictional. This is a mobile-friendly content preview, not a completed county application or legal advice.
Sample · 1 of 4 · Not for filing
Property summary
Demonstration home · Example Township
PIN: [demonstration placeholder]
- County assessed value
- $54,000
- County-implied market value
- $540,000
- Building size / year built
- 1,800 sq ft / 1955
- Tax year / snapshot date
- [Shown on your guide]
Verify these county facts against your home. Incorrect size, condition, or features can change how you interpret the research.
Sample · 2 of 4 · Not for filing
Comparable sales
Illustrative comparable — not a real property
- Sale price / building size
- $450,000 / 1,800 sq ft = $250 per sq ft
- Sale date / distance
- June 15, 2025 / 0.4 miles (fictional)
- Class / year built
- Same residential class / 1958
- PIN / recorded document number
- [Demonstration placeholders]
Why selected: Same neighborhood and property class, similar size and age. These similarities do not establish identical condition or features.
Your guide provides the actual selected sales, county identifiers and available distances. Missing data is marked unavailable, not guessed.
Sample · 3 of 4 · Not for filing
Evidence summary
In this fictional example, the county-implied value is $300 per building square foot. The illustrative sale is $250 per square foot.
Research note example: “I am asking the Board of Review to check my home’s value. I am using the selected recorded sales and checking how their property facts compare with mine.”
This example explains the comparison; one sale or a price difference alone does not prove overassessment. Your guide’s notes reflect its actual selected evidence and need your review.
No tax savings or successful appeal is promised.
Sample · 4 of 4 · Not for filing
Filing checklist and next steps
Filing window/deadline: No real deadline is shown in this fictional sample. The guide links back to your free property result for current Assessor and Board of Review dates when verified, with official-source links. Recheck the county calendar before filing.
- Confirm the property, tax year, and correct filing venue.
- Review the selected sales and any cautions; correct or explain property differences.
- Review the research notes and downloadable DIY evidence PDF.
- Complete the county application, add the required attachments, submit yourself, and save confirmation.
Filing with Cook County itself is free. Check the County provides research; you file directly with Cook County.
Official Board of Review filing portalWhat you receive
- A private research page with all selected sales and source identifiers.
- Editable, copy-ready research notes identifying the sales and value comparison.
- A downloadable DIY evidence PDF with property, tax year, snapshot date, sale details and preparation steps.
What you still do
- Check your property facts, tax year, and the Board of Review filing window.
- Verify that the evidence fits your home and the county's current requirements.
- Complete the county's application, supply required attachments, submit, and save confirmation yourself.
No filing, representation, guaranteed reduction, or future-year updates are included. Closed-cycle guides are historical research only. Sales-based screening does not evaluate every possible appeal argument.