Cook County Board of Review Opens 2025 Property Tax Appeals for Group 4
The Cook County Board of Review has opened 2025 property tax appeals for the third group. The Board’s deadline to appeal your 2025 assessed value is November 21, 2025. Below are the townships that are currently open in Group 4:
- Bremen
- Calumet
- Hyde Park
- Lemont
- Leyden
- Worth
Assessments can be appealed every year, regardless of when a township was reassessed. If you missed your appeal opportunity at the Assessor’s office earlier in the year, or if you did appeal and weren’t satisfied with the result, you have a second opportunity to appeal at the Board of Review. Appealing your home’s 2025 assessed value is the only way to achieve property tax relief on your second installment property tax bill in the fall of 2026, other than selling your home or claiming a new exemption.
Contact us before the November 21st, deadline for a free, no-obligation, and professional analysis of your home’s assessment level compared to similar properties in your neighborhood. We’ll tell you if we don’t think you have a strong case for an appeal. If we feel there is a solid factual-based argument to be made, then you can choose if you would like to hire us to assist you with the appeal. There is no risk in using our service because you pay nothing unless your appeal is successful.



2025 Triennial reassessment notices were mailed to Leyden Township homeowners on July 21, 2025, Homeowners in Leyden Township have 43 days to appeal their assessment at the Assessor’s office (there will be a second opportunity to appeal later in the year at the Board of Review, whether you appeal at the Assessor’s office or not). The deadline for appealing at the Assessor’s office is September 02, 2025.
Attention Cook County homeowners! The Board of Review has officially opened the window for property tax appeals for Group 5A 2024. If you reside in any of the following townships, now is the time to act:
Attention Leyden Township property owners! The Cook County Assessor’s office has sent out 2024 property assessment notices, and you have until September 20, 2024, to appeal your 2024 assessed value. 
2023 property assessment notices were mailed by the Cook County Assessor’s office on August 16, 2023, to Leyden Township property owners. The window to appeal your 2023 assessed value is now open until the deadline of September 18, 2023. The following cities, towns, and villages are in Leyden Township: Bensenville (east portion), Elmwood Park, Franklin Park, Melrose Park (north portion), Norridge (west edge), Northlake (north portion), Park Ridge (south edge), River Grove, Rosemont (southeast 3/4), and Schiller Park.
2022 Triennial reassessment notices were mailed to Leyden Township homeowners on Friday, September 16, 2022. Homeowners in Leyden Township have 30 days to appeal their assessment at the Assessor’s office (there will be a second opportunity to appeal later in the year at the Board of Review, whether you appeal at the Assessor’s office or not). The deadline for appealing at the Assessor’s office is October 17, 2022.
The Cook County Board of Review has opened 2021 property tax appeals for the seventh group. The
The window to appeal your 2021 assessed value is now open until the deadline of September 30, 2021. 2021 property assessment notices were mailed to Leyden Township property owners by the Cook County Assessor’s Office on Monday, August 30, 2021. The following cities, towns, and villages are in Leyden Township: Bensenville (east portion), Elmwood Park, Franklin Park, Melrose Park (north portion), Norridge (west edge), Northlake (north portion), Park Ridge (south edge), River Grove, Rosemont (southeast 3/4), and Schiller Park.
The Cook County Board of Review has opened 2020 property tax appeals for the sixth group of townships. The
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