Cook County Value

903 Ash St, Winnetka, IL 60093

4 bed / 2 bath, 3,344 sqft, built 1997, in New Trier. Assessor market value for 2026: $1,730,010.

Cook County account 05202200290000

Likely too high

about $52,000

8 similar homes nearby point to a value about $52,000 lower than yours.

Assessor market value$1,730,010
Similar homes$1,678,186
$51,824 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$1,730,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,344 sqft
$517 per sqft
Year built
1997
Average quality

Why we think so

Similar homes' assessments

Strong

4 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $501.85/sqft, which supports a value of $1,678,186.

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 60093 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 $1,730,010 in 2025 to $1,730,010 in 2026.
  • Assessor market value per square footThe current public record shows about $517 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 60093.
  • Neighborhood value signalAmong 609 residential records in the same neighborhood, the average assessor market value is about $514 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.0% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 982 Oak St, Winnetka, IL 60093
    3,288 sqft | $479/sqft | built 1996 | Similar size (3,288 vs 3,344 sqft); Similar age (1996 vs 1997); Similar lot size (9,350 vs 9,350 sqft)
    $1,575,000
  • 978 Oak St, Winnetka, IL 60093
    3,353 sqft | $556/sqft | built 2001 | Similar size (3,353 vs 3,344 sqft); Similar age (2001 vs 1997); Similar lot size (9,350 vs 9,350 sqft)
    $1,863,360
  • 892 Ash St, Winnetka, IL 60093
    3,433 sqft | $498/sqft | built 1997 | Similar size (3,433 vs 3,344 sqft); Built same year (1997); Similar lot size (9,350 vs 9,350 sqft)
    $1,710,010
  • 978 Cherry St, Winnetka, IL 60093
    3,248 sqft | $532/sqft | built 2001 | Similar size (3,248 vs 3,344 sqft); Similar age (2001 vs 1997); Similar lot size (9,350 vs 9,350 sqft)
    $1,728,400
  • 610 Rosewood Ave, Winnetka, IL 60093
    3,382 sqft | $498/sqft | built 1999 | Similar size (3,382 vs 3,344 sqft); Similar age (1999 vs 1997); Similar lot size (9,150 vs 9,350 sqft)
    $1,684,000

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

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$1,730,010$00.0%
2025$1,730,010+$338,930+24.4%
2024$1,391,080——
2-year total+$338,930+24.4%