Cook County Board of Review Group 3: File by November 6, Evidence by November 16

Cook County Board of Review Group 3 complaints for Lyons, Northfield, Stickney, and West Chicago Townships must be filed by November 6, 2026. The Board’s official calendar lists a separate November 16 deadline for evidence supporting a timely Group 3 complaint. Filing a complaint and submitting evidence are two different tasks, and missing either date can affect the review.

The clearest way to approach this window is to confirm the township and parcel first, file the complaint before November 6, and organize the supporting valuation or uniformity evidence for submission by November 16. Do not rely on an Assessor deadline or another township’s calendar.

Which Cook County townships are in Board of Review Group 3?

The Board’s official 2026 township calendar places Lyons, Northfield, Stickney, and West Chicago Townships in Group 3. All four opened for complaints on October 8, 2026, and share the November 6 complaint deadline and November 16 evidence deadline.

A mailing address does not always identify the correct township. Use the permanent index number, or PIN, and the official parcel record to confirm the township before relying on this schedule. Properties with multiple PINs may also require careful review of how the parcels relate to one another.

What must be filed by November 6?

The November 6 date is the complaint-filing deadline. A complaint identifies the property, taxpayer, requested assessment, appeal basis, and other information the Board requires to open the case. A saved draft, unfinished online form, or evidence packet without a timely complaint is not a substitute for a completed filing.

Before submitting, verify the assessment year, township, PIN, owner name, property class, current assessed value, and requested assessed value. Keep the submission confirmation and a complete copy of the filed complaint. If a representative files, confirm that the authorization and appearance requirements are satisfied.

What is due by November 16?

November 16 is the evidence-submission deadline shown for timely Group 3 complaints. Evidence should support the reason for the requested reduction rather than simply repeat that the tax bill is high. Depending on the property and appeal theory, useful material may include comparable assessments, sale information, property-record corrections, photographs, income and expense records, leases, appraisals, or a written brief.

The Board of Review official rules govern what should be disclosed, how evidence should be organized, and when late material may be rejected. Review the rules that match the property type and the evidence being offered.

Is the complaint deadline the same as the evidence deadline?

No. Group 3 has a November 6 complaint deadline and a November 16 evidence deadline. The extra time for evidence does not extend the complaint window. Owners should treat November 6 as the last day to initiate the appeal and November 16 as the last day to complete the supporting record identified by the Board’s calendar.

Submitting earlier gives time to resolve login, upload, file-format, or parcel-identification problems. It also creates a clearer record of what was filed and when. If a deadline is close, prioritize a complete, accurate complaint and follow the Board’s rules for the evidence submission.

What evidence supports a residential appeal?

Residential appeals often focus on lack of uniformity, overvaluation, or incorrect property characteristics. Strong comparable properties usually share meaningful features such as neighborhood, class, style, size, age, and condition. A useful comparison explains why the selected properties are genuinely similar and how their assessments support the requested result.

Photographs and records can also document factual errors or material condition issues. They should identify the property and relevant date, and the written explanation should connect each item to the valuation question. A large attachment set without a clear theory can make the strongest evidence harder to find.

What evidence supports a commercial appeal?

Commercial appeals may require income and expense statements, rent rolls, leases, vacancy information, sales evidence, capitalization analysis, appraisals, surveys, or property-specific photographs. The right evidence depends on the property type and the valuation method. All documents should describe the same parcel, time period, and physical property.

Commercial owners should reconcile reported area, occupancy, rents, expenses, and appraisal assumptions before filing. If the evidence contains different figures, explain the difference rather than leaving the reviewer to infer why the numbers changed.

Does an appeal directly challenge the tax bill?

A Board of Review appeal challenges assessed value, not every component of the tax bill. The final bill also reflects the state equalization factor, local tax rates, exemptions, and taxing-district levies. A lower assessment can reduce the value used in the tax calculation, but an appeal should identify a supportable assessed value and explain why the current assessment is incorrect or unequal.

Track the current Cook County windows on the Younis Law Group property-tax deadline tracker, then confirm the official date for the specific property before filing.

What should a Group 3 owner do now?

Confirm the township and PIN, download the current assessment record, decide whether the claim is based on market value, uniformity, a factual error, or another recognized ground, and assemble the evidence around a specific requested assessment. File the complaint before November 6 and complete the evidence submission before November 16.

Younis Law Group represents owners in Cook County property tax appeals. A review can help determine which claim and evidence fit the property. Outcomes are not guaranteed, and fee arrangements depend on the engagement terms.

This article is general information, not legal advice. Government calendars and rules can change. Confirm the current official deadline and filing requirements for the property before acting.