Cook County Value

900 Lake Ave, Wilmette, IL 60091

5 bed / 2 bath, 2,036 sqft, built 1900, in New Trier. Assessor market value for 2026: $1,140,000.

Cook County account 05274200160000

Assessor market value
$1,140,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,036 sqft
$560 per sqft
Year built
1900
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 $1,140,000 in 2025 to $1,140,000 in 2026.
  • Assessor market value per square footThe current public record shows about $560 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.

  • 1122 Lake Ave, Wilmette, IL 60091
    1,976 sqft | $386/sqft | built 1900 | Similar size (1,976 vs 2,036 sqft); Built same year (1900); Similar lot size (10,000 vs 10,000 sqft)
    $763,000
  • 811 Forest Ave, Wilmette, IL 60091
    2,036 sqft | $593/sqft | built 1898 | Similar size (2,036 vs 2,036 sqft); Similar age (1898 vs 1900); Similar lot size (9,250 vs 10,000 sqft)
    $1,206,650
  • 1132 Lake Ave, Wilmette, IL 60091
    2,046 sqft | $494/sqft | built 1892 | Similar size (2,046 vs 2,036 sqft); Similar lot size (10,000 vs 10,000 sqft); Same quality (Average)
    $1,010,000
  • 915 Elmwood Ave, Wilmette, IL 60091
    1,968 sqft | $925/sqft | built 1899 | Similar size (1,968 vs 2,036 sqft); Similar age (1899 vs 1900); Similar lot size (9,350 vs 10,000 sqft)
    $1,820,010
  • 709 Elmwood Ave, Wilmette, IL 60091
    1,920 sqft | $628/sqft | built 1908 | 6% smaller (1,920 vs 2,036 sqft); Similar lot size (9,650 vs 10,000 sqft); Same quality (Average)
    $1,206,240

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

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$1,140,000$00.0%
2025$1,140,000+$153,340+15.5%
2024$986,660$00.0%
2023$986,660$00.0%
2022$986,660+$322,180+48.5%
2021$664,480+$100.0%
2020$664,470——
6-year total+$475,530+71.6%