Whiteside County, Illinois

Challenge a revised county house value in Whiteside County.

For Whiteside County homeowners who need to confirm the wEDGE property record, the 30-day filing window after mailing or publication, and the Board of Review complaint packet before filing.

County-confirmed parcel lookup Nearby public sales comps Transparent low / mid / high savings range
How we help: Download a free appeal-readiness summary first. If the case looks worth filing, we can prepare the full submission package for a flat fee. No representation agreement is required.

30 days after mailing or publication, whichever is later (2026 dates TBD)

Whiteside County says complaints must be filed within 30 days after mailing of assessment change notices, or within 30 days after publication of assessment change notices, whichever is later. Per-township 2026 publication dates are not posted as a dated table, so product shows TBD rather than inventing deadlines. File the original signed complaint form with one copy of all evidence by mail (postmark) or in person at 200 E Knox St, Morrison, by 4:30 p.m. on the deadline day; fax transmissions and e-mails are not accepted.

  • Search by parcel number or street address
  • See the county's house value and nearby comparable sales
  • Download your estimate after entering your email
  • Check the 2026 township deadline tracker.

Step 1

Find the property

Enter a Whiteside County parcel number like 11-16-382-008 or a street address.