Cook County Value

230 Greenleaf Ave, Wilmette, IL 60091

5 bed / 2 bath, 3,489 sqft, built 1925, in New Trier. Assessor market value for 2026: $1,550,000.

Cook County account 05351090170000

Assessor market value
$1,550,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,489 sqft
$444 per sqft
Year built
1925
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 stayed about the same, from $1,550,000 in 2025 to $1,550,000 in 2026.
  • Assessor market value per square footThe current public record shows about $444 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 807 residential records in the same neighborhood, the average assessor market value is about $481 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.6% on average.

Comparable assessments

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

  • 501 Lake Ave, Wilmette, IL 60091
    3,530 sqft | $428/sqft | built 1927 | Similar size (3,530 vs 3,489 sqft); Similar age (1927 vs 1925); Similar lot size (11,289 vs 11,040 sqft)
    $1,510,000
  • 619 Laurel Ave, Wilmette, IL 60091
    3,323 sqft | $469/sqft | built 1921 | Similar size (3,323 vs 3,489 sqft); Similar age (1921 vs 1925); Similar lot size (11,200 vs 11,040 sqft)
    $1,556,960
  • 415 Laurel Ave, Wilmette, IL 60091
    3,618 sqft | $439/sqft | built 1920 | Similar size (3,618 vs 3,489 sqft); Similar age (1920 vs 1925); Similar lot size (11,200 vs 11,040 sqft)
    $1,590,000
  • 727 Laurel Ave, Wilmette, IL 60091
    3,417 sqft | $468/sqft | built 1913 | Similar size (3,417 vs 3,489 sqft); Similar lot size (11,200 vs 11,040 sqft); Same quality (Average)
    $1,600,000
  • 418 9th St, Wilmette, IL 60091
    3,423 sqft | $480/sqft | built 1916 | Similar size (3,423 vs 3,489 sqft); Similar lot size (10,500 vs 11,040 sqft); Same quality (Average)
    $1,642,090

Recent comparable sales

Sales selected by similarity to the subject property.

  • 108 17th St, Wilmette, IL 60091
    June-29-2026 | 3,493 sqft | $417/sqft | built 1941 | Similar size (3,493 sqft); Sold after the valuation date; Within 1 bedroom (4 vs 5)
    $1,457,000
  • 533 Maple Ave, Wilmette, IL 60091
    3,584 sqft | $307/sqft | built 1931 | Similar size (3,584 sqft); Moderate age difference (6 years newer); Within 1 bedroom (6 vs 5)
    $1,100,000

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$1,550,000$00.0%
2025$1,550,000+$262,500+20.4%
2024$1,287,500−$72,500−5.3%
2023$1,360,000$00.0%
2022$1,360,000+$324,420+31.3%
2021$1,035,580−$32,040−3.0%
2020$1,067,620——
6-year total+$482,380+45.2%