Cook County Value

811 Ashland Ave, Wilmette, IL 60091

4 bed / 3 bath, 3,915 sqft, built 2022, in New Trier Assessor market value for 2026: $2,965,480.

Cook County account 05274060050000

Assessor market value
$2,965,480
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,915 sqft
$757 per sqft
Year built
2022
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 3.1% from $3,060,010 in 2025 to $2,965,480 in 2026.
  • Assessor market value per square footThe current public record shows about $757 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.

  • 909 Greenwood Ave, Wilmette, IL 60091
    4,021 sqft | $641/sqft | built 2018 | Similar size (4,021 vs 3,915 sqft); Similar age (2018 vs 2022); Similar lot size (12,320 vs 12,090 sqft)
    $2,577,370
  • 1221 Sheridan Rd, Wilmette, IL 60091
    4,101 sqft | $578/sqft | built 2010 | Similar size (4,101 vs 3,915 sqft); Similar lot size (12,000 vs 12,090 sqft); Same quality (Average)
    $2,370,000
  • 818 Ashland Ave, Wilmette, IL 60091
    3,941 sqft | $952/sqft | built 2025 | Similar size (3,941 vs 3,915 sqft); Similar age (2025 vs 2022); Similar lot size (11,160 vs 12,090 sqft)
    $3,750,000
  • 1314 Greenwood Ave, Wilmette, IL 60091
    4,150 sqft | $639/sqft | built 2016 | 6% larger (4,150 vs 3,915 sqft); Similar lot size (13,200 vs 12,090 sqft); Same quality (Average)
    $2,653,820
  • 723 Forest Ave, Wilmette, IL 60091
    4,442 sqft | $652/sqft | built 2021 | 14% larger (4,442 vs 3,915 sqft); Similar age (2021 vs 2022); Similar lot size (11,400 vs 12,090 sqft)
    $2,897,110

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 3.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,965,480−$94,530−3.1%
2025$3,060,010+$1,087,140+55.1%
2024$1,972,870$00.0%
2023$1,972,870−$109,610−5.3%
2022$2,082,480+$1,132,560+119.2%
2020$949,920——
6-year total+$2,015,560+212.2%