Cook County Value

503 Illinois Rd, Wilmette, IL 60091

4 bed / 2 bath, 2,198 sqft, built 1927, in New Trier. Assessor market value for 2026: $860,000.

Cook County account 05331160400000

Assessor market value
$860,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,198 sqft
$391 per sqft
Year built
1927
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 $860,000 in 2025 to $860,000 in 2026.
  • Assessor market value per square footThe current public record shows about $391 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 1,944 residential records in the same neighborhood, the average assessor market value is about $372 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.2% on average.

Comparable assessments

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

  • 305 Lawndale Ave, Wilmette, IL 60091
    2,153 sqft | $469/sqft | built 1931 | Similar size (2,153 vs 2,198 sqft); Similar age (1931 vs 1927); Similar lot size (13,105 vs 12,802 sqft)
    $1,010,010
  • 212 Lawndale Ave, Wilmette, IL 60091
    2,304 sqft | $403/sqft | built 1927 | Similar size (2,304 vs 2,198 sqft); Built same year (1927); Similar lot size (13,200 vs 12,802 sqft)
    $929,000
  • 301 Lawndale Ave, Wilmette, IL 60091
    2,180 sqft | $454/sqft | built 1922 | Similar size (2,180 vs 2,198 sqft); Similar age (1922 vs 1927); Similar lot size (12,150 vs 12,802 sqft)
    $990,000
  • 221 Lawndale Ave, Wilmette, IL 60091
    2,197 sqft | $429/sqft | built 1937 | Similar size (2,197 vs 2,198 sqft); Similar lot size (12,150 vs 12,802 sqft); Same quality (Average)
    $941,710
  • 2132 Wilmette Ave, Wilmette, IL 60091
    2,067 sqft | $382/sqft | built 1927 | 6% smaller (2,067 vs 2,198 sqft); Built same year (1927); Similar lot size (12,090 vs 12,802 sqft)
    $790,000

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$860,000$00.0%
2025$860,000+$189,990+28.4%
2024$670,010$00.0%
2023$670,010$00.0%
2022$670,010+$61,540+10.1%
2021$608,470+$100.0%
2020$608,460——
6-year total+$251,540+41.3%