Winnebago County’s 2026 Complaint Deadlines Depend on Township
Winnebago County has published two 2026 Board of Review complaint deadlines based on township: September 4 or September 5.Official sourceWinnebago County Board of Review:https://wincoil.gov/departments/supervisor-of-assessments/board-of-reviewSource reviewed August 2, 2026.
Confirm the live county page and the township applicable to the property before relying on this summary.September 4 townshipsCherry Valley, Durand, Laona, Owen, and Rockford.September 5 townshipsBurritt, Harlem, Harrison, Pecatonica, Rockton, Roscoe, Seward, Shirland, and Winnebago.The county also publishes later additional-evidence dates that vary according to the township group and the size of the requested reduction.
Those dates should be taken from the current county page and the case instructions.Begin with the townshipPreserve the assessment notice and identify the parcel, township, publication date, assessed value, and complaint deadline.
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