Niles Township property tax appeals had a 24.0% success rate in the 2025 results analyzed. A successful appeal means the assessed value was changed after review, often based on market evidence and comparable properties. On average, final assessed values came in about $2,064 lower than proposed. Success varied by property class, with some commercial classes seeing higher change rates. Cook County Tax Appeals tracks these township trends to help Cook County property owners understand what outcomes look like in practice.

Niles Township Cook County Property Tax Appeal Results (2025)

Data Overview and Key Metrics

Data analysis prepared by cookcountytaxappeal.com based on township appeal result records.

Niles Township Appeal Results Overview

This report summarizes Cook County Assessor appeal outcomes for Niles Township using a full set of appeal records that include property class, proposed assessed value, final assessed value, and whether the outcome resulted in a change.

Property owners typically appeal when the assessed value feels too high compared to similar properties, recent sale prices, or the property’s condition. Cook County Tax Appeals reviews these township-level patterns to help owners understand what tends to get traction and what does not.

Overall Appeal Success Rate in Niles Township

In the Niles Township results analyzed, 4,721 out of 19,682 appeals were successful. That equals an overall success rate of 24.0%.

In this dataset, a “successful” appeal means the outcome was marked Change, which indicates the assessed value was adjusted after review. If your outcome is “No Change,” it means the assessment stayed the same.

Even when the odds are not 50/50, appeals can still be worth reviewing because the upside can carry forward into future tax bills if the assessment is reduced.

Appeal Success Rate by Property Class

Appeal outcomes were not evenly distributed across property classes. Some classes saw higher change rates, while others were closer to the township average.

Here are the headline takeaways from the highest-volume classes:

• Most common classes (largest share of filings): 2-99 and 2-03, both with a 25% success rate.

• Notably higher-change classes in the top group: 5-93 (44.3%) and 5-17 (37.3%).

• Lower-change example in the top group: 2-11 (14.2%).

Chart: Appeal Success Rate by Property Class (Top Classes.

cookcountytaxappeal.com monitors these differences because property class often shapes what evidence works best and how outcomes trend year to year.

Assessed Value Changes Explained (Proposed vs Final)

Across all Niles Township appeals in this dataset:

• The average proposed assessed value was $71,218

• The average final assessed value was $69,153

That is an average reduction of about $2,064 per appeal record.

Why it matters: Property taxes are driven by assessed value (and then applying exemptions, tax rates, and other factors). When assessed value drops, the tax bill can drop too. Even a modest reduction can be meaningful, especially for higher-value properties or owners with multiple parcels.

Cook County Tax Appeals helps property owners understand “assessment language.” They provide clear next steps. This includes deciding if it is worth appealing and what evidence can support a change.

What These Results Mean for Niles Township Property Owners

If you own property in Niles Township, these results point to a few practical takeaways:

• Appeals can work, but evidence matters. A quarter of appeals resulted in a change, which suggests many filings do not meet the standard needed to adjust assessed value.

• Property class can influence outcomes. Certain classes show higher change rates, which may reflect valuation methods, property types, or stronger supporting documentation.

• A lower final assessed value can mean real savings. Even average reductions may create noticeable tax relief depending on your tax rate and exemptions.

If your assessed value jumped after reassessment, looks higher than nearby comparable properties, or does not reflect the property condition, it is often worth doing a careful review.

FAQ: Niles Township Cook County Property Tax Appeals

1) What counts as a “successful” Cook County property tax appeal?

In these results, success means the outcome was Change, which indicates the assessed value was adjusted after review.

2) Does appealing my assessment increase my taxes?

An appeal is a request to review the assessment. Outcomes vary, but many property owners appeal when they believe the assessed value is too high. Reviewing the numbers and evidence first helps avoid surprises.

3) What evidence usually helps in a Niles Township assessment appeal?

Many successful appeals are supported by comparable properties, market data, and clear documentation that the property is over-assessed compared to similar parcels.

4) Should I appeal to the Assessor, the Board of Review, or both?

They are separate steps in Cook County. Many owners start with the Assessor’s process and may later pursue the Board of Review if needed, depending on timing and results.

5) Why do success rates vary by property class?

Different classes can be valued differently, and the best supporting evidence can vary. That is one reason Cook County Tax Appeals breaks results down by class and township.

Conclusion

Niles Township appeal results show an overall 24.0% success rate, with meaningful differences by property class. On average, final assessed values were modestly lower than proposed values, which can translate into tax savings for some owners. The strongest outcomes tend to come from appeals supported by clear market evidence and well-matched comparable properties. Cook County Tax Appeals publishes township-level appeal insights to help Cook County property owners make informed decisions.

Check your potential savings with Cook County Tax Appeals

If you own property in Niles Township and think your assessed value is too high, visit Cook County Tax Appeals to see how much you could save.

• No upfront costs

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