Knox County, IL · Knox County
2026 Residential Assessment Complaint
Property owners or taxpayers of record use this form to ask the Knox County Board of Review to review a residential property assessment.
At a glance
- Issued by
- City of Knox County · Knox County, Knox County, Illinois
- Notarization
- Not required: file this form without a notary.
- Official source
- knoxcountyil.gov
- Blank form
- Download the PDF
- Catalogued
- Machine-readable
- JSON record · about the forms index
What this form is
The form lets an owner or taxpayer of record explain why a residential assessment should be reviewed and state a requested property value. It asks for property identification, reasons for the complaint, assessment and value information, and comparable property details when required. File the form with supporting evidence by the deadline printed on it; an attorney representing the filer must include written authorization.
Who needs it
A property owner or taxpayer of record who wants to challenge a residential assessment may file this complaint with the Knox County Board of Review.
How to submit it
Submit one set of the completed form and supporting documents to the Knox County Board of Review, 121 S Prairie Street, Suite 1, Galesburg, IL 61401. The form also permits emailed appeals and says they must have a timestamp by 4:00 p.m. on the filing deadline.
About notarization
The complaint form is signed without a notary; however, an attorney’s written authorization must be notarized when required, and the form’s oath refers to a notarized authorization.
How to submit this form
- 1
Download the Form
Download the 2026 Residential Assessment Complaint form.
- 2
Complete the Form
Fill in the applicable sections, identify the property, explain the complaint, and provide the requested value.
- 3
Gather Supporting Documents
Prepare one set of supporting evidence. If an attorney represents you, include the required written authorization.
- 4
Submit to the County
Send the form and supporting documents to the Knox County Board of Review using the submission details printed on the form.
Frequently asked questions
- Do I need a notary for the 2026 Residential Assessment Complaint?
- No. The complaint form itself is signed without a notary. If an attorney represents you, the written authorization required with the complaint must be notarized.
- How do I submit the residential assessment complaint?
- Send one set of the completed form and supporting documents to the Knox County Board of Review at the address printed on the form. Email appeals must meet the form’s timestamp requirement.
- Who can file this assessment complaint?
- The property owner or taxpayer of record may file. An attorney may represent them if written authorization is submitted with the complaint.
- What supporting documents should I include?
- Include evidence supporting the complaint, such as closing disclosures, sales contracts, appraisals, and photographs. The form also requires comparable property information in specified cases.