In 2025, Schaumburg Township had 22,649 Cook County Assessor appeals, and 2,850 were marked “Change”, a 12.58% success rate. Most filings were residential classes, especially 2-99 (condos) and 2-78 (larger, newer 2+ story homes). On average, Final Assessed Value came in about 5.9% lower than Proposed Assessed Value across all appeals, with reductions concentrated in the successful cases. Results varied a lot by property class, which is why knowing your class, comps, and evidence matters. This analysis was prepared by Cook County Tax Appeals using township-level appeal outcomes and assessed value data.

Schaumburg Township Cook County Property Tax Appeal Results (2025) | Cook County Tax Appeals

Data Overview and Key Metrics (2025)

Data analysis prepared by Cook County Tax Appeals (Schaumburg Township, 2025 Assessor appeal results).

Schaumburg Township Appeal Results Overview

This dataset reflects Cook County Assessor appeal outcomes for Schaumburg Township in 2025, including property class, Proposed Assessed Value, Final Assessed Value, and whether the outcome was “Change” or not. In plain terms, a “Change” means the appeal resulted in an adjusted assessed value (treated as a success in this analysis).

Schaumburg Township is a major reassessment area, and the Cook County Assessor publicly notes key mailing and appeal windows for the township during reassessment cycles.

Overall Appeal Success Rate

Out of 22,649 appeals, 2,850 were successful, for an overall success rate of 12.58%.

What “successful” means here: the outcome field shows “Change” (any change is counted as a success). This is a useful way to measure win rate at a township level because it lines up with what property owners care about most: did the appeal produce an adjustment?

Appeal Success Rate by Property Class (with class names)

Quick interpretation

Success rates vary sharply by class. In Schaumburg Township’s 2025 results, the biggest volume classes were residential, while several commercial and industrial classes posted higher success rates (on smaller sample sizes).

Below are the highest-volume classes (and a few notable non-residential classes), with plain-English class names based on Cook County classification definitions:

Class definitions sourced from Cook County Assessor classification documentation.

What to take from this:

• If you are in a high-volume residential class (especially condos), the success rate can look lower because many filings are submitted, and outcomes depend heavily on evidence quality and comparables.

• Some commercial and industrial categories show much higher success rates, but the number of appeals is far smaller, so the percentages can swing more.

Assessed Value Changes Explained (Proposed vs Final)

Across all Schaumburg Township appeals in 2025:

• Average Proposed AV: $66,326

• Average Final AV: $62,434

• That is about a $3,892 average difference, or roughly 5.9% lower overall.

Looking only at successful appeals (“Change”), the reductions are much more meaningful:

• Total AV reduction across successful appeals: $88,269,311

• Average reduction per successful appeal: $30,983

• Median reduction per successful appeal: $2,266

• Average percent reduction (successful appeals): about 8.71%

Why this matters: your tax bill is not the assessed value by itself, but the assessed value is a major input into the calculation. A lower assessed value can translate into savings, especially if the reduction is substantial and your exemptions, equalization, and tax rate environment support it.

What These Results Mean for Property Owners in Schaumburg Township

If you own property in Schaumburg Township:

1. Your property class matters more than most people realize. Different classes behave differently in appeals, and evidence needs to match your class type.

2. Condos (2-99) made up the largest share of appeals. If you are a condo owner, strong comparable sales and correct property characteristics are key.

3. Commercial and industrial properties can see higher “Change” rates. These cases often hinge on income, vacancy, expenses, and market support, not just a few nearby sales.

4. Timing matters. Appeal windows are limited and published by the Assessor, so you want to act while your township is open.

Cook County Tax Appeals uses township-level results like these to help you understand what is happening locally and what tends to work in Cook County appeals.

FAQ

1) What is the Cook County property tax appeal success rate in Schaumburg Township (2025)?

Based on 2025 Assessor appeal outcomes in this dataset, 12.58% of appeals were marked “Change” in Schaumburg Township.

2) What does “Change” mean in Cook County Assessor appeal results?

“Change” indicates the appeal resulted in an adjusted assessed value. In this analysis, any “Change” is treated as a successful appeal.

3) What property class am I in, and why does it matter?

Your Cook County class code describes your property type (for example, 2-99 is residential condominium). It matters because appeal patterns and evidence expectations differ by class.

4) Do reassessment notices and appeal deadlines differ by township?

Yes. The Assessor publishes township-specific reassessment mailing dates and appeal windows, and Schaumburg Township has its own timeline during reassessment cycles.

5) Where can I check appeal deadlines and local Cook County appeal guidance?

You can use the official Assessor calendar for windows and deadlines, and you can also use Cook County Property Tax Appeal Deadlines page for plain-English guidance and local township context.

Conclusion

Schaumburg Township’s 2025 Cook County Assessor appeal results show a 12.58% overall success rate (based on “Change” outcomes), with wide variation by property class. Average Final Assessed Value came in lower than Proposed overall, and the successful cases produced substantial total reductions in assessed value.

If you want to understand what these trends mean for your property class and your assessed value, Cook County Tax Appeals is a practical resource for Cook County appeal insights and township-level analysis.

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