Berwyn Township Property Tax

Formerly closed townships have been reopened for Board of Review appeals with a filing deadline of December 12, 2025.

While outside of Chicago proper, Berwyn is what many people think of when they picture classic Chicago. Densely populated with vintage homes and a working-class heritage, Berwyn stands out when compared to some of the wealthier suburbs. This vintage charm and close proximity to Chicago have made Berwyn an excellent place to live and work, and the relatively affordable housing and excellent schools make it the perfect place to raise a family. Unfortunately, like the rest of Cook County, Berwyn has seen rising property values and taxes in recent years, which threaten to upend the traditional township’s identity.

Cook County Property Tax

Triennial Reassessment

In 2026, the southern and western suburbs of Cook County will experience the triennial reassessment. This is when the Cook County Assessor’s Office (CCAO) focuses on a third of the county and determines the value of every home and business. The last time that Berwyn was examined this way was in 2023, one of the most infamous reassessments in Chicago’s history. Berwyn saw the overall market value of its property increase by 36.78%, one of the highest that year. Since values are used to calculate property taxes, this has also led to historic increases in tax bills. Time will tell if 2026 will be as harsh, but the people of Berwyn are pursuing property tax reduction in record numbers, like the rest of the county.

Tools to Reduce Property Taxes

Tax rates and the equalization factor are both beyond the control of homeowners and businesses. However, property values can be reduced, which then leads to smaller taxes. There are a few methods for both businesses and homeowners, all of which are worthy and effective options in their own right. Because of rising values, especially in reassessment years, key organizations in the Cook County government, including the CCAO and the treasurer, encourage the use of every single one of these techniques to get values down to the fairest level possible.

Exemptions: The CCAO has a litany of options when it comes to exemptions, and every taxpayer should utilize as many as they are eligible for. The base homeowner’s exemption alone can reduce equalized assessed value (EAV) by $10,000. Seniors, those with disabilities, and many veterans can also land substantial reductions simply by filing.

Property Tax Appeals: These challenges to the CCAO lower taxes by calling inflated values into question. Property tax appeals work alongside exemptions and can offer even greater savings. While they require more effort, they are being filed in record numbers as taxes continue to rise.

Cost Segregation: This is used by businesses to lower or even eliminate federal income taxes. This is achieved by utilizing the accelerated depreciation of tangible assets, such as buildings, machinery, and inventory, which can shield a business and add exceptionally to cash flow.

Property Tax Appeals Even the Score

Property tax appeals are based on having certain grounds, which are then backed by evidence to be successful. This includes overassessment, where the market value of a property is higher than it would logically sell for. This is proven through the gathering of sales records dating back three years. Lack of uniformity occurs when a property is assessed at a higher rate than other properties in the same area. This can be shown by providing assessments from the same area. To be used for valid comparisons, the properties in either case need to be in the same location, be around the same age, and be about the same size.

In Cook County, taxpayers have two separate appeal deadlines, while the rest of Illinois has just one. The first is the assessor appeal, where taxpayers take their grievances directly to the CCAO. The second is months later and is with the Board of Review (BOR). With the right evidence, either can offer large reductions in taxes. The deadline for assessor appeals is 30 business days after the notice of reassessment is sent out.


Key Deadlines for Berwyn

While being late on taxes can cost taxpayers more in penalties and interest, there are other deadlines that should be tracked as well. For instance, missing the appeal or exemption deadlines means missing out on those particular avenues of tax reduction for a whole year. Cook County taxpayers do have two chances to file appeals, which is better than the rest of Illinois. First, there is the assessor appeal, which is directly with the CCAO. Then, months later, there is a formal appeal with the Board of Review (BOR).

  • Assessor appeal deadline: July 6, 2026
  • Board of Review appeal deadline: pending
  • First installment of property taxes due: April 1, 2026
  • Second installment of property taxes due: pending

O’Connor Helps with Gathering Evidence

While it can be complex, gathering evidence is the most important part of launching a successful property tax appeal. This tends to be the barrier to entry for homeowners and businesses, as it can be an extremely time-consuming task. This includes reviewing the assessment and spotting any factual errors, along with deciding if the values are fair. We at O’Connor are here to help, and are experts in analysis and gathering evidence.

When clients sign up with us, we will analyze their assessment. If we find any issues, we will use data-driven techniques to gather evidence, including using our state-of-the-art databases to find the perfect comparisons for our clients’ properties. Once we have all of the evidence needed for the case, we will coordinate an appeal with a law firm that focuses exclusively on property tax matters. Taxpayers will not pay for the evidence or analysis unless they and their lawyers can lower their taxes.

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Frequently Asked Questions About Berwyn Property Taxes

A combination of mismanagement, unsustainable pensions, and numerous computer issues that has caused delays for years.

Yes, as values, tax rates, and equalization factors change every year, it is best to keep on top of a property by constantly questioning the values of the CCAO.

The exemption reduces EAV by $10,000. 

Only a portion of a home or business’s value can be used to calculate taxes. Only 10% of a home’s market value can be used, while typically 25% of a business’ can be. This is the assessed value and will eventually have the equalization factor and tax rates applied to it.

Property Tax Locations

Chicago Office

Chicago Office

(By appointment only)
75 Executive Drive,
Suite 349 Aurora, IL 60504 708-630-0944

Houston Office

Houston Office

(Corporate)
2200 North Loop West,
Suite 200 Houston, TX 77018
713-686-9955

Dallas Office

Dallas Office

(By appointment only)
4101 McEwen Rd, Suite 200
Dallas, TX 75244 972-243-9966

San Antonio

San Antonio Office

(By appointment only)
8632 Fredericksburg Rd, Suite 105
San Antonio, TX 78240 210-226-0829

New York Office

New York Office

(By appointment only)
70 East Sunrise Hwy, Suite 500
Valley Stream, NY 11581 934-203-9917

Georgia Office
Georgia Office

Atlanta Office

(By appointment only)
4751 Best Road, Suite 316
College Park, GA 30337 770-835-4126

Property Tax Protection Program Benefits
  • No flat fees or upfront costs. No cost ever unless your property taxes are reduced.
  • All practical efforts are made every year to reduce your property taxes.
  • Never miss another appeal deadline.
  • Property taxes protested for you annually.
  • You do not have to accept the appraisal district's initial guesstimate of value.
  • We coordinate with you regarding building size / condition to avoid excess taxes.
  • Free support regarding homestead exemptions.
  • Some years are good - typically 6 to 7 out of 10 will result in tax reduction for you.
  • The other 3 to 4 years out of 10 we strike out. Most often due to people issues in the hearing process. Some years we get an easy appraiser at the informal; some years someone who is impossible to settle with.
About O'Connor
Property Tax Help Specialists

O’Connor provides property tax appeal services to over 100,000 clients in over 40 states. Client tax savings totaled over $120 million in 2020. O’Connor has been serving property owners since 1974, almost 50 years. Client tax savings total over $1,000,000,000.

O’Connor measures its success in client property tax savings, not billings. Our goal is to save clients $1 billion annually.

With over 200 property tax experts, many of whom have worked with us for 10+ years, O’Connor has the expertise to help with your property tax questions and appeals. We literally wrote the books on property tax reduction:

  1. Mass Appraisal for Commercial – What Every Commercial Property Owner Should Know!
  2. What You Need to Know about Business Personal Property
  3. Cut Your Texas Property Taxes

The steps to appeal are complicated and may seem like too much work, but when O'Connor represents your property for appeal, we handle the details. We provide a property tax reduction service to residential homeowners in exchange for a contingency fee of 30 percent of all property taxes saved through administrative hearings or judicial appeal, for that tax year.