Rock Island County deadline
Rock Island County 2026 assessment complaint deadline
The 2026 county-wide complaint window is open through October 26, 2026.
2026 Board of Review complaint window
OpenRock Island County county-wide
Opened: September 26, 2026
Deadline: October 26, 2026
20 days remain. Confirm the filing method on the official Board of Review site.
Official Rock Island County sources
- Rock Island County Board of Review announcement
- Rock Island County 2026 Board of Review rules and procedures
- Rock Island County 2026 residential complaint form
Rock Island County's Board of Review announcement says 2026 assessment complaints are accepted through October 26, 2026. The 2026 rules list a September 26, 2026 publication date and October 26, 2026 last day to file. The rules say faxed and emailed complaints will not be accepted; complaints may be filed by hand delivery, USPS postmark, or qualifying private carrier tracking date. During complaint session, office hours are Monday through Friday, 8:00 a.m. until 4:30 p.m. The residential complaint form requires two copies of the complaint form and two copies of all supporting documents. The rules require an original signature on the complaint form; digital signatures are not accepted.
Disclaimer: HomeTaxChallenge is not a government agency and is not affiliated with the Rock Island County Assessment Office or Rock Island County Board of Review. Always confirm dates and filing instructions on the official county sources above.