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Cook County · Illinois

Riverside Township property tax appeals

A Riverside Township property tax appeal starts with the Cook County Assessor's Office, then the Cook County Board of Review. This season's deadline has not been announced yet. Our forecast for Riverside Township, Cook County Assessor's Office: Mar 25, 2027 – Jun 8, 2027 (not an official date).

Next deadline
Expected Mar 25, 2027 – Jun 8, 2027
Forecast, not an official date
Riverside Township · Cook County Assessor's Office
Source: 35 ILCS 200/12-55 - Illinois Property Tax Code (ILGA; Wayback capture 2026-01-09)Last checked

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Enter the address or parcel number from your notice. We compare the assessment with similar homes and show the numbers, whatever they are. You decide and file yourself.

Part of Cook CountyEvery appeal date in Cook County

Where to file first
Cook County Assessor's Office
Our coverage
Free check available
  • Independent guide — not affiliated with Riverside, Cook County or any government agency.
Last updated
October 1, 2026
Sources last checked
October 3, 2026
Status
Verified guide

How we verify facts

When and where do I file a Riverside Township property tax appeal?

Who hears a Riverside Township appeal?

The stages in order. We are not affiliated with any of these offices.

  1. Cook County Assessor's Office

    Filing: appeal

    Official site

  2. Cook County Board of Review

    Filing: complaint

    Official site

  3. Circuit Court of Cook County (tax objection)

    Filing: objection

  4. Illinois Property Tax Appeal Board

    Filing: appeal

    Official site

Which Riverside Township filing windows are coming up?

Riverside Township filing windows
ClosesAreaWho hears itStatus
Expected Mar 25, 2027 – Jun 8, 2027Riverside TownshipCook County Assessor's Office · Official source · Last checked Oct 3, 2026Forecast, not an official date
Expected Aug 11, 2027 – Sep 22, 2027Riverside TownshipCook County Board of Review · Official source · Last checked Oct 3, 2026Forecast, not an official date

When were past Riverside Township deadlines?

Past Riverside Township filing windows
Tax yearWindowOffice
2026Closed September 1, 2026Riverside · Cook County Board of Review
2026Closed June 8, 2026Riverside · Cook County Assessor's Office
2023Closed May 1, 2023Riverside · Cook County Assessor's Office
2020Closed March 25, 2020Riverside · Cook County Assessor's Office

When is the Riverside appeal deadline?

Cook County Assessor's Office: Expected around May 2027 (between March 25, 2027 and June 8, 2027), based on past deadlines for tax years 2020, 2023 and 2026 (predicted, not yet announced). Cook County Board of Review: Expected to close between August 11, 2027 and September 22, 2027 (predicted, not yet announced). We'll confirm these dates when the county posts them.

Deadline detailBoard of Review re-review
Riverside Township, tax year 2025: the Board of Review's decision date was Feb 3, 2026 and the re-review period closed Feb 5, 2026; the Assessor (CCAO) certification date was Apr 9, 2026.[1] (latest published: tax year 2025)
Deadline detailNotice mailed
Riverside Township (2026 reassessment): Reassessment Notices were mailed Apr 24, 2026; appeals were due Jun 8, 2026.[2]

Who can answer questions about my assessment?

Hours: Riverside Township Assessor's office hours: 9:00 A.M. to 1:00 P.M. or by appointment. Office: The Riverside Township Assessor's office is at 27 Riverside Rd. Riverside, IL 60546; phone (708) 447-7700.

ContactHours
Riverside Township Assessor's office hours: 9:00 A.M. to 1:00 P.M. or by appointment.[5]
ContactOffice
The Riverside Township Assessor's office is at 27 Riverside Rd. Riverside, IL 60546; phone (708) 447-7700.[5]

Upcoming appeal deadlines in every county we track

What do Riverside Township property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

How Riverside Township home assessments are spread

Assessed values of 5,196 homes in the property classes our free check covers (202, 203, 204, 205, 206 and 8 more), tax year 2025 values after the Board of Review. Half are between $28,000 and $46,000; the median is $35,000. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2025 values after the Board of Review), retrieved Sep 25, 2026; our calculation.

Riverside Township compared with other townships

  1. Niles$38,250
  2. Norwood Park$38,000
  3. Schaumburg$37,259
  4. Orland$35,000
  5. Riverside$35,000
  6. Lyons$33,000
  7. Palos$32,595
  8. Hanover$31,000
  9. Leyden$30,000

Ranked 21 of 38; showing the 9 nearest in rank.

Median assessed value by township: highest North Chicago ($135,400), lowest Thornton ($12,000).

Median assessed value of homes in the property classes our free check covers (202, 203, 204, 205, 206 and 8 more) for each township with at least 50 such homes, tax year 2025 values after the Board of Review.Source: Assessment records from the county's open data (tax year 2025 values after the Board of Review), retrieved Sep 25, 2026; our calculation.

How much home assessments changed, by township

  1. River Forest+27.8%
  2. Berwyn+24.0%
  3. Oak Park+22.2%
  4. Stickney+21.1%
  5. Riverside+20.4%
  6. Cicero+20.0%
  7. Palos+20.0%
  8. Elk Grove0.0%
  9. Evanston0.0%

Ranked 5 of 14; showing the 9 nearest in rank.

Median change in assessed value from tax year 2025 values after the Board of Review to tax year 2026 Assessor-certified values: Berwyn +24.0%, Cicero +20.0%, Elk Grove 0.0%, Evanston 0.0%, Maine 0.0%, New Trier 0.0% and more.

Median change per home from tax year 2025 values after the Board of Review to tax year 2026 Assessor-certified values, for homes with a value at both stages. 14 townships have the newer values so far.Source: Assessment records from the county's open data (tax year 2025 values after the Board of Review), retrieved Sep 25, 2026; our calculation.

What happened to Riverside Township appeals in tax year 2025

  1. Assessor22% lowered of 794
  2. Board of Review38% lowered of 1,067

Assessor: 22% of 794 appeals lowered (median cut 5.8%); Board of Review: 38% of 1,067 appeals lowered (median cut 6.1%)

Share of appeals on homes in the property classes our free check covers (202, 203, 204, 205, 206 and 8 more) that were lowered, unchanged or raised, by stage.Source: public appeal results for tax year 2025 from the county's open data, retrieved Sep 25, 2026; our calculation. Past results, not a prediction for any home.

Riverside Township filing windows on a calendar

  1. Riverside TownshipExpected Mar 25, 2027 – Jun 8, 2027 · Cook County Assessor's Office · Forecast, not an official date
  2. Riverside TownshipExpected Aug 11, 2027 – Sep 22, 2027 · Cook County Board of Review · Forecast, not an official date

Riverside Township: Expected Mar 25, 2027 – Jun 8, 2027; Riverside Township: Expected Aug 11, 2027 – Sep 22, 2027

Each bar is a filing window from its opening day to its last day. Forecasts show the expected closing range and are not official dates.Source: the official calendars and rules cited in the sources list below.

How often is property reassessed in Riverside?

Riverside Township is reassessed every three years with the South and West Suburbs; its scheduled reassessment years are 2026, 2029 and 2032.

Reassessment cycle
Riverside Township is reassessed every three years with the South and West Suburbs; its scheduled reassessment years are 2026, 2029 and 2032.[3]

What do home values and property taxes look like in Riverside?

Riverside Township (2026 reassessment): the Assessor's median estimated market value for single-family homes was $423,000 (median 2025 sale price $451,000). Riverside Township (2026 reassessment): condos had a median 2025 sale price of $177,000; the Assessor's median estimate was $184,000.

Median assessor estimate
Riverside Township (2026 reassessment): the Assessor's median estimated market value for single-family homes was $423,000 (median 2025 sale price $451,000).[2]
Median condo price
Riverside Township (2026 reassessment): condos had a median 2025 sale price of $177,000; the Assessor's median estimate was $184,000.[2]
Median sale price
Riverside Township (2023 reassessment): the median sale price of single-family homes in 2022 was $361,000; the Assessor's median market value estimate for the class was $364,000.[4] (latest published: tax year 2023)
Median small apartment price
Riverside Township (2026 reassessment): small apartment buildings had a median 2025 sale price of $625,000; the Assessor's median estimate was $499,000.[2]

Other places nearby

Illinois property tax appeals: all counties

Where do these facts come from?

  1. [1]Board of Review 2025 Re-Review/Decision Dates (PDF, Rev.6/9/2026) - Cook County Board of ReviewOfficial notice, form, calendar or rules · last checked Oct 1, 2026
  2. [2]Riverside: Residential Valuations - Cook County Assessor's OfficeOfficial guide or FAQ · last checked Oct 1, 2026
  3. [3]Township Triennial Reassessment Schedule (PDF) - Cook County Board of ReviewOfficial notice, form, calendar or rules · last checked Oct 1, 2026
  4. [4]Reassessments Begin in Cook County’s South and West Suburbs - Cook County Assessor's Office (press release, April 7, 2023)Official guide or FAQ · last checked Oct 1, 2026
  5. [5]Cook County Township Assessors - Cook County Assessor's OfficeOfficial guide or FAQ · last checked Oct 1, 2026
  6. [6]Assessment & Appeal Calendar (page last updated 9/22/26) - Cook County Assessor's OfficeOfficial notice, form, calendar or rules · last checked Sep 24, 2026
  7. [7]35 ILCS 200/12-55 - Illinois Property Tax Code (ILGA; Wayback capture 2026-01-09)Statute or regulation · last checked Sep 24, 2026
  8. [8]Cook County Board of Review Dates and Deadlines 2026 Session (PDF, created 2026-09-14)Official notice, form, calendar or rules · last checked Sep 24, 2026
  9. [9]Frequently Asked Questions - Cook County Board of ReviewOfficial guide or FAQ · last checked Sep 24, 2026
  10. [10]Detailed Methodology Reports Released for Riverside Township - Cook County Assessor's Office (press release, February 18, 2020)Official guide or FAQ · last checked Oct 1, 2026
  11. 11.County open data: cook assessmentsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  12. 12.County open data: cook parcelsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  13. 13.County open data: cook parcelsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  14. 14.County open data: cook parcelsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  15. 15.County open data: appeal resultsAggregated by us for the appeal-results chart.
  16. 16.County open data: appeal resultsAggregated by us for the appeal-results chart.

Not affiliated with Riverside Township or any government agency. Not legal advice. Not an appraisal.

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