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Cook County · Illinois

Northfield Township property tax appeals

A Northfield 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 Northfield Township, Cook County Assessor's Office: Jul 31, 2027 – Nov 3, 2027 (not an official date).

Next deadline
Expected Jul 31, 2027 – Nov 3, 2027
Forecast, not an official date
Northfield Township · Cook County Assessor's Office
Source: 35 ILCS 200/12-55 - Illinois Property Tax Code (ILGA; Wayback capture 2026-01-09)Last checked

Check a Northfield Township home for free

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 Northfield, 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 Northfield Township property tax appeal?

Who hears a Northfield 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 Northfield Township filing windows are coming up?

Northfield Township filing windows
ClosesAreaWho hears itStatus
Expected Jul 31, 2027 – Nov 3, 2027Northfield TownshipCook County Assessor's Office · Official source · Last checked Oct 3, 2026Forecast, not an official date

When were past Northfield Township deadlines?

Past Northfield Township filing windows
Tax yearWindowOffice
2026Closed September 4, 2026Northfield · Cook County Assessor's Office
2025Closed July 31, 2025Northfield · Cook County Assessor's Office
2022Closed November 3, 2022Northfield · Cook County Assessor's Office

When is the Northfield appeal deadline?

Cook County Assessor's Office: Expected around September 2027 (between July 31, 2027 and November 3, 2027), based on past deadlines for tax years 2022, 2025 and 2026 (predicted, not yet announced). We'll confirm it when the county posts it.

Deadline detailBoard of Review re-review
Northfield Township, tax year 2025: the Board of Review's decision date was Feb 18, 2026 and the re-review period closed Feb 20, 2026; the Assessor (CCAO) certification date was Apr 28, 2026.[1] (latest published: tax year 2025)
Deadline detailNotice mailed
Northfield Township (2025 reassessment): Reassessment Notices were mailed Jun 17, 2025; appeals were due Jul 31, 2025.[2] (latest published: tax year 2025)

Who can answer questions about my assessment?

Hours: Northfield Township Assessor's office hours: 8:30 A.M. to 4:30 P.M. Office: The Northfield Township Assessor's office is at 2550 Waukegan Road, Suite 210 Glenview, IL 60025; phone (847) 724-8300.

ContactHours
Northfield Township Assessor's office hours: 8:30 A.M. to 4:30 P.M.[6]
ContactOffice
The Northfield Township Assessor's office is at 2550 Waukegan Road, Suite 210 Glenview, IL 60025; phone (847) 724-8300.[6]

Upcoming appeal deadlines in every county we track

What do Northfield 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 Northfield Township home assessments are spread

Assessed values of 23,804 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 $56,377 and $100,000; the median is $75,929. 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.

Northfield Township compared with other townships

  1. North Chicago$135,400
  2. New Trier$112,633
  3. Lake View$89,642
  4. Barrington$77,000
  5. Northfield$75,929
  6. River Forest$69,000
  7. Evanston$61,000
  8. Lemont$47,001
  9. Rogers Park$46,001

Ranked 5 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.

What happened to Northfield Township appeals in tax year 2025

  1. Assessor20% lowered of 13,126
  2. Board of Review59% lowered of 14,528

Assessor: 20% of 13,126 appeals lowered (median cut 5.3%); Board of Review: 59% of 14,528 appeals lowered (median cut 6.2%)

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.

How often is property reassessed in Northfield?

Northfield Township is reassessed every three years with the North Suburbs; its scheduled reassessment years are 2025, 2028 and 2031.

Reassessment cycle
Northfield Township is reassessed every three years with the North Suburbs; its scheduled reassessment years are 2025, 2028 and 2031.[3]

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

Northfield Township (2022 reassessment): total assessed value grew 34% at the Assessor's initial reassessment, before appeals (tax year 2022). Northfield Township (2025 reassessment): the Assessor's median estimated market value for single-family homes was $784,000 (median 2024 sale price $779,000) (tax year 2025).

Assessed value change
Northfield Township (2022 reassessment): total assessed value grew 34% at the Assessor's initial reassessment, before appeals.[4] (latest published: tax year 2022)
Median assessor estimate
Northfield Township (2025 reassessment): the Assessor's median estimated market value for single-family homes was $784,000 (median 2024 sale price $779,000).[2] (latest published: tax year 2025)
Median condo price
Northfield Township (2025 reassessment): condos had a median 2024 sale price of $324,000; the Assessor's median estimate was $336,000.[2] (latest published: tax year 2025)
Median sale price
Northfield Township (2025 reassessment): the median sale price of single-family homes in 2024 was $779,000; the Assessor's median market value estimate for the class was $784,000.[5] (latest published: tax year 2025)
Median small apartment price
Northfield Township (2025 reassessment): small apartment buildings had a median 2024 sale price of $1,000,000; the Assessor's median estimate was $916,000.[2] (latest published: tax year 2025)

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]Northfield Township: 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]Northfield Township Property Values Released - Cook County Assessor's Office (press release, October 5, 2022)Official guide or FAQ · last checked Oct 1, 2026
  5. [5]Property Values for Northfield Township Released - Cook County Assessor's Office (press release, June 20, 2025)Official guide or FAQ · last checked Oct 1, 2026
  6. [6]Cook County Township Assessors - Cook County Assessor's OfficeOfficial guide or FAQ · last checked Oct 1, 2026
  7. [7]Assessment & Appeal Calendar (page last updated 9/22/26) - Cook County Assessor's OfficeOfficial notice, form, calendar or rules · last checked Sep 24, 2026
  8. [8]35 ILCS 200/12-55 - Illinois Property Tax Code (ILGA; Wayback capture 2026-01-09)Statute or regulation · last checked Sep 24, 2026
  9. 9.County open data: cook assessmentsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  10. 10.County open data: cook parcelsRetrieved Sep 25, 2026; aggregated by us for the charts above.
  11. 11.County open data: cook parcelsRetrieved 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: appeal resultsAggregated by us for the appeal-results chart.
  14. 14.County open data: appeal resultsAggregated by us for the appeal-results chart.

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

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