Enter your address. ParcelProof compares your assessment with similar properties nearby and tells you whether an appeal is worth filing — using your county's own published records, with the arithmetic shown.
Free to check. No card, no commitment. If there is a case worth making, the completed filing packet is $10.99 — one payment, no subscription, refunded on request.
Park Ridge, Cook County · 1,564 sq ft · measured against 653 comparable parcels
An assessment figure, not a tax bill. What that reduction is worth in tax depends on your equalisation factor, exemptions and local rates — your notice is the authority.
Illinois lets you challenge an assessment two ways. The check above argues uniformity — your assessment against comparable properties. The Sales Reality Check argues market value: whether your home is assessed above what homes like it have actually sold for, from 333,255 recorded Cook County sales.
It runs a full IAAO sales-ratio study — level of assessment, COD, PRD — and prints every sale it used so you can check the work.
Built by Zappfin LLC in Illinois, on roughly five million normalised Illinois parcel records. We show the comparables and the working so you can check them, rather than asking you to trust a prediction.
We are not a law firm. We do not file for you, do not appear before a board, and guarantee no outcome. In Cook County an individual may represent themselves; property held by an LLC or corporation generally needs an Illinois attorney. More about us · Legal · Deadlines by state