Cook County property tax
New Trier Township property tax appeal guide
New Trier Township filing window
This cycle's filing windows have passed for New Trier Township.
Check your New Trier property freeWhen were the calendar records checked?
- Cook County Assessor: last retrieved .
- Board of Review: last retrieved .
These are separate source retrievals, not editorial reviews or a guarantee that filing is open. A published source date can be older than its retrieval date. Missing dates do not mean there is no deadline.
New Trier Township follows the North Triad calendar, with a 2025 reassessment and the next reassessment scheduled for 2028. That schedule attaches to the township, not to the municipality shown in a property's mailing address. Reassessment years are not the only years with access to review, because the Board of Review opens a New Trier Township window every year.
Cities and villages in New Trier Township
Property addresses in New Trier Township most often list these cities:
- Wilmette — 7,932 single-family parcels (48% of this township's single-family parcels)
- Winnetka — 3,764 single-family parcels (23% of this township's single-family parcels)
- Glencoe — 2,657 single-family parcels (16% of this township's single-family parcels)
- Glenview — 1,055 single-family parcels (6% of this township's single-family parcels)
- Kenilworth — 799 single-family parcels (5% of this township's single-family parcels)
- Northfield — 405 single-family parcels (2% of this township's single-family parcels)
A city can span more than one township, so confirm your township on your assessment notice or the Cook County Assessor's site.
Recent home sales in New Trier Township
From August 11, 2024 through August 11, 2026, the comparison pool contains 1,161 recorded single-family sales.
- Median sale price: $1,375,000
- Middle-half sale price range (25th–75th percentile): $875,000–$2,000,000
- Median sale price per square foot: $523
- Median building size: 2,596 square feet
- Median year built: 1950
These are recorded single-family sales used as comparison evidence, not an estimate of any home's value.
Evidence to review
- Do not use a newly rebuilt or substantially enlarged home as a proxy for an older residence without accounting for age, size, and construction differences.
- Compare bathroom counts and basement finish in the Assessor records, especially when the homes have similar exterior forms but different interior utility.
- Examine frontage, lot shape, and exposure to traffic or commercial activity before concluding that two nearby sites are alike.
- Choose recent recorded sales from the same assessment neighborhood and state why each one is a closer physical match than the alternatives.
To check property facts on the county map, follow our CookViewer property comparison walkthrough. Keep assessment values separate from recorded sale prices.
Official sources
Cook County Assessor calendar · Cook County Board of Review appeals
You file directly with Cook County for free. We provide optional research, not representation or guaranteed savings.
Other North Triad townships
Related guides
- Cook County property tax appeal evidence checklist — Organize records, sales comparisons, photos, and submission confirmations with a printable preparation checklist.
- How much could a Cook County property tax appeal save? — Work through an illustrative tax calculation and understand why an assessment reduction is different from a tax saving.
- Wrong square footage on your Cook County assessment? — Verify property measurements, document a record error, and prepare a correction request with an evidence checklist.
- Why are my neighbor’s property taxes lower in Cook County? — Separate assessments from exemptions, compare similar homes, and work through a neighbor comparison before appealing.
- Cook County property tax appeal after buying a home — Assessment higher than your purchase price? Compare the figures, gather closing documents, and check your appeal window.
- How to use CookViewer to compare Cook County properties — Find the official map, compare property facts, and keep assessment figures separate from recorded sale prices.
- Why did my Cook County property tax bill go up? — Work through annual totals, assessment changes, exemptions, and tax rates before choosing your next step.
- How to read your Cook County assessment notice — Understand the numbers, verify your property facts, and turn your notice into an evidence checklist.
- Missed your Cook County property tax appeal deadline? — Find out which window closed, check the other appeal office, and prepare for what comes next.
- Assessor appeal vs Board of Review appeal — Understand the two appeal offices, their separate calendars, and the evidence each reviews.
- How to find comparable sales — Review a hypothetical sales comparison and print a blank research worksheet.
- How to appeal without a lawyer — Gather evidence, check your township window, and file directly with Cook County.
- Cook County property tax exemptions: are you missing one? — Check which exemptions apply, renew automatically, or need annual filing.
- What happens after a Board of Review appeal? — Understand PTAB's role after a Board of Review decision and its filing instructions.
- How to find your Cook County PIN — Find your 14-digit PIN on county records and use it for filings and research.
- Cook County property tax appeal research guide — See how property records and comparable sales can support an assessment appeal.
Guide revision dates describe changes to this guidance. County calendar retrievals are shown separately above; confirm filing dates with the office receiving your appeal.