Cook County Value

223 17th St, Wilmette, IL 60091

4 bed / 2 bath, 3,198 sqft, built 1929, in New Trier. Assessor market value for 2026: $990,000.

Cook County account 05334010580000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$990,000
Similar homes$1,255,023
No gap: similar homes are at or above the county value · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$990,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,198 sqft
$310 per sqft
Year built
1929
Average quality

What we found

Similar homes' assessments

Weak

0 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $390.76/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $155,740. Counting your land in place of theirs where theirs is less, they support a value of $1,255,023.

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 60091 and New Trier assessment pages.

Local guide: New Trier Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for New Trier have closed (Assessor , Board of Review ). 2027 notices usually start in March.

Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked against the official source.

Assessment snapshot

These public CCAO records highlight what may be worth checking before you file.

  • Assessment changeThe assessor market value stayed about the same, from $990,000 in 2025 to $990,000 in 2026.
  • Assessor market value per square footThe current public record shows about $310 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the New Trier neighborhood and ZIP 60091.
  • Neighborhood value signalAmong 1,944 residential records in the same neighborhood, the average assessor market value is about $372 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.2% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 1710 Central Ave, Wilmette, IL 60091
    2,970 sqft | $502/sqft | built 1927 | 7% smaller (2,970 vs 3,198 sqft); Similar age (1927 vs 1929); Similar lot size (7,800 vs 7,416 sqft)
    $1,490,000
  • 1717 Highland Ave, Wilmette, IL 60091
    3,221 sqft | $343/sqft | built 1921 | Similar size (3,221 vs 3,198 sqft); Similar lot size (7,800 vs 7,416 sqft); Same quality (Average)
    $1,105,080
  • 1721 Highland Ave, Wilmette, IL 60091
    3,378 sqft | $449/sqft | built 1924 | 6% larger (3,378 vs 3,198 sqft); Similar age (1924 vs 1929); Similar lot size (7,800 vs 7,416 sqft)
    $1,518,380
  • 1769 Washington Ave, Wilmette, IL 60091
    2,866 sqft | $380/sqft | built 1922 | 10% smaller (2,866 vs 3,198 sqft); Similar lot size (7,520 vs 7,416 sqft); Same quality (Average)
    $1,089,940
  • 231 17th St, Wilmette, IL 60091
    2,902 sqft | $382/sqft | built 1927 | 9% smaller (2,902 vs 3,198 sqft); Similar age (1927 vs 1929); Similar lot size (6,792 vs 7,416 sqft)
    $1,107,410

Recent comparable sales

Sales selected by similarity to the subject property.

Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

No change in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$990,000$00.0%
2025$990,000+$172,650+21.1%
2024$817,350−$32,650−3.8%
2023$850,000$00.0%
2022$850,000+$302,430+55.2%
2021$547,570$00.0%
2020$547,570——
6-year total+$442,430+80.8%