Cook County Value

511 Ash St, Winnetka, IL 60093

5 bed / 3 bath, 4,969 sqft, built 1994, in New Trier. Assessor market value for 2026: $2,467,660.

Cook County account 05211250090000

Assessor market value
$2,467,660
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,969 sqft
$497 per sqft
Year built
1994
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 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 decreased 8.6% from $2,700,000 in 2025 to $2,467,660 in 2026.
  • Assessor market value per square footThe current public record shows about $497 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 1,469 residential records in the same neighborhood, the average assessor market value is about $518 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.0% on average.

Comparable assessments

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

  • 870 Sheridan Rd, Winnetka, IL 60093
    5,028 sqft | $594/sqft | built 2000 | Similar size (5,028 vs 4,969 sqft); Similar lot size (18,600 vs 18,700 sqft); Same quality (Average)
    $2,988,520
  • 371 Fairview Ave, Winnetka, IL 60093
    4,901 sqft | $553/sqft | built 2000 | Similar size (4,901 vs 4,969 sqft); Similar lot size (18,500 vs 18,700 sqft); Same quality (Average)
    $2,710,000
  • 286 Sheridan Rd, Winnetka, IL 60093
    5,107 sqft | $548/sqft | built 1997 | Similar size (5,107 vs 4,969 sqft); Similar age (1997 vs 1994); Lot 11% smaller (16,580 vs 18,700 sqft)
    $2,800,000
  • 645 Maple St, Winnetka, IL 60093
    5,125 sqft | $638/sqft | built 2009 | Similar size (5,125 vs 4,969 sqft); Similar lot size (19,914 vs 18,700 sqft); Same quality (Average)
    $3,270,000
  • 530 Ash St, Winnetka, IL 60093
    4,807 sqft | $605/sqft | built 2001 | Similar size (4,807 vs 4,969 sqft); Lot 11% larger (20,832 vs 18,700 sqft); Same quality (Average)
    $2,908,280

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 8.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,467,660−$232,340−8.6%
2025$2,700,000+$1,080,000+66.7%
2024$1,620,000$00.0%
2023$1,620,000$00.0%
2022$1,620,000+$65,360+4.2%
2021$1,554,640$00.0%
2020$1,554,640——
6-year total+$913,020+58.7%