Cook County Value

227 9th St, Wilmette, IL 60091

4 bed / 3 bath, 2,874 sqft, built 1904, in New Trier. Assessor market value for 2026: $1,290,100.

Cook County account 05344000140000

Assessor market value
$1,290,100
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,874 sqft
$449 per sqft
Year built
1904
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 7.2% from $1,390,010 in 2025 to $1,290,100 in 2026.
  • Assessor market value per square footThe current public record shows about $449 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 1,671 residential records in the same neighborhood, the average assessor market value is about $458 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.4% on average.

Comparable assessments

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

  • 322 14th St, Wilmette, IL 60091
    2,849 sqft | $408/sqft | built 1911 | Similar size (2,849 vs 2,874 sqft); Similar lot size (6,080 vs 5,950 sqft); Same quality (Average)
    $1,161,130
  • 245 Wood Ct, Wilmette, IL 60091
    2,860 sqft | $472/sqft | built 1912 | Similar size (2,860 vs 2,874 sqft); Similar lot size (6,250 vs 5,950 sqft); Same quality (Average)
    $1,350,010
  • 221 Wood Ct, Wilmette, IL 60091
    2,755 sqft | $442/sqft | built 1898 | Similar size (2,755 vs 2,874 sqft); Similar lot size (6,250 vs 5,950 sqft); Same quality (Average)
    $1,217,990
  • 1328 Washington Ave, Wilmette, IL 60091
    3,003 sqft | $439/sqft | built 1913 | Similar size (3,003 vs 2,874 sqft); Similar lot size (6,000 vs 5,950 sqft); Same quality (Average)
    $1,318,120
  • 237 Wood Ct, Wilmette, IL 60091
    2,679 sqft | $444/sqft | built 1906 | 7% smaller (2,679 vs 2,874 sqft); Similar age (1906 vs 1904); Similar lot size (6,250 vs 5,950 sqft)
    $1,190,010

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 7.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,290,100−$99,910−7.2%
2025$1,390,010+$290,010+26.4%
2024$1,100,000+$281,210+34.3%
2023$818,790−$71,220−8.0%
2022$890,010+$231,570+35.2%
2021$658,440+$100.0%
2020$658,430——
6-year total+$631,670+95.9%