Cook County Value

900 Chestnut Ave, Wilmette, IL 60091

4 bed / 2 bath, 3,406 sqft, built 1920, in New Trier. Assessor market value for 2026: $1,781,440.

Cook County account 05274000260000

Assessor market value
$1,781,440
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,406 sqft
$523 per sqft
Year built
1920
Average quality

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 4.7% from $1,870,010 in 2025 to $1,781,440 in 2026.
  • Assessor market value per square footThe current public record shows about $523 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

Similar public appraisal records selected for this property's equity comparison.

  • 633 Forest Ave, Wilmette, IL 60091
    3,467 sqft | $432/sqft | built 1916 | Similar size (3,467 vs 3,406 sqft); Similar age (1916 vs 1920); Similar lot size (11,970 vs 12,118 sqft)
    $1,499,000
  • 723 Ashland Ave, Wilmette, IL 60091
    3,369 sqft | $533/sqft | built 1918 | Similar size (3,369 vs 3,406 sqft); Similar age (1918 vs 1920); Similar lot size (11,160 vs 12,118 sqft)
    $1,794,860
  • 601 Elmwood Ave, Wilmette, IL 60091
    3,571 sqft | $529/sqft | built 1917 | Similar size (3,571 vs 3,406 sqft); Similar age (1917 vs 1920); Similar lot size (12,056 vs 12,118 sqft)
    $1,890,000
  • 731 Elmwood Ave, Wilmette, IL 60091
    3,367 sqft | $517/sqft | built 1916 | Similar size (3,367 vs 3,406 sqft); Similar age (1916 vs 1920); Similar lot size (11,460 vs 12,118 sqft)
    $1,741,140
  • 920 Greenwood Ave, Wilmette, IL 60091
    3,519 sqft | $485/sqft | built 1914 | Similar size (3,519 vs 3,406 sqft); Similar lot size (12,090 vs 12,118 sqft); Same quality (Average)
    $1,705,970

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: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 4.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,781,440−$88,570−4.7%
2025$1,870,010+$490,000+35.5%
2024$1,380,010$00.0%
2023$1,380,010$00.0%
2022$1,380,010+$287,700+26.3%
2021$1,092,310+$100.0%
2020$1,092,300——
6-year total+$689,140+63.1%