Reassessment notices for all Riverside Township property owners have been mailed out and should be arriving shortly. 2026 is the first year of the new triennial appeal cycle. Appealing the first year of a triennial reassessment is the best opportunity in savings and lowering assessed value if records indicate the property is not assessed equitably. The deadline to file an appeal with Cook County is Monday June 8, 2026 by 11:59 pm.
The Riverside Township Assessor will be holding an appeals outreach with the Cook County Assessor on Wednesday, May 13, 2026 from 6:00 pm – 8:00 pm in the 2nd floor Auditorium of the Riverside Town Hall, 27 Riverside Road. Staff will be on hand to offer assistance with appeals and answer any questions about the process.
Reasons for appeal:
- Lack of uniformity. Your property is assessed higher than other properties in your neighborhood and classification of similar size, age, construction, and within proximity.
- Market value. The Assessor’s market value is higher than the property’s actual value if the property was purchased after January 1, 2024.
- Error in description of property, such as incorrect square feet of living space.
- Uninhabitable. Your property was uninhabitable for all of part of the year due to fire and/or flood damage.
The Cook County Assessor’s Office now requires that all appeals be filed online. The Riverside Township Assessor’s Office is available to assist residential taxpayers with their online appeals, as well as:
- help property owners determine the best reason to file an appeal.
- provide comparable properties to support a case of lack of uniformity.
- make sure supporting evidence and documentation is complete.
- assist new homeowners with first time appeals.
Residents that need assistance with filing an appeal must first call the Riverside Township Assessor’s Office to make an appointment, at (708) 447-7700. Office hours are Monday – Friday from 9:00 am – 2:00 pm. In-person appointments cannot be made via email. Other general questions, or a request to be added to the Assessor’s contact list, can be emailed to: assessor@riversidetownship.org.
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