Cook County Value

1221 Chestnut Ave, Wilmette, IL 60091

5 bed / 2 bath, 3,615 sqft, built 1920, in New Trier. Assessor market value for 2026: $2,028,640.

Cook County account 05273020040000

Likely too high

about $90,000

8 similar homes nearby point to a value about $90,000 lower than yours.

Assessor market value$2,028,640
Similar homes$1,938,543
$90,097 gap · bars start at $0

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

Assessor market value
$2,028,640
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,615 sqft
$561 per sqft
Year built
1920
Average quality

Why we think so

Similar homes' assessments

Strong

7 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $536.25/sqft, which supports a value of $1,938,543.

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 decreased 3.4% from $2,100,000 in 2025 to $2,028,640 in 2026.
  • Assessor market value per square footThe current public record shows about $561 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 809 residential records in the same neighborhood, the average assessor market value is about $540 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.4% on average.

Comparable assessments

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

  • 924 Forest Ave, Wilmette, IL 60091
    3,655 sqft | $536/sqft | built 1922 | Similar size (3,655 vs 3,615 sqft); Similar age (1922 vs 1920); Similar lot size (13,875 vs 13,200 sqft)
    $1,960,000
  • 1049 Chestnut Ave, Wilmette, IL 60091
    3,728 sqft | $547/sqft | built 1921 | Similar size (3,728 vs 3,615 sqft); Similar age (1921 vs 1920); Similar lot size (13,275 vs 13,200 sqft)
    $2,040,440
  • 1111 Ashland Ave, Wilmette, IL 60091
    3,485 sqft | $591/sqft | built 1916 | Similar size (3,485 vs 3,615 sqft); Similar age (1916 vs 1920); Similar lot size (13,200 vs 13,200 sqft)
    $2,060,000
  • 941 Sheridan Rd, Wilmette, IL 60091
    3,843 sqft | $515/sqft | built 1918 | 6% larger (3,843 vs 3,615 sqft); Similar age (1918 vs 1920); Similar lot size (12,545 vs 13,200 sqft)
    $1,980,000
  • 1101 Greenwood Ave, Wilmette, IL 60091
    3,612 sqft | $540/sqft | built 1909 | Similar size (3,612 vs 3,615 sqft); Similar lot size (13,200 vs 13,200 sqft); Same quality (Average)
    $1,950,010

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

Down 3.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,028,640−$71,360−3.4%
2025$2,100,000+$610,000+40.9%
2024$1,490,000$00.0%
2023$1,490,000$00.0%
2022$1,490,000+$254,340+20.6%
2021$1,235,660$00.0%
2020$1,235,660——
6-year total+$792,980+64.2%