Cook County Value

505 Sheridan Rd, Winnetka, IL 60093

6 bed / 6 bath, 6,339 sqft, built 2010, in New Trier. Assessor market value for 2026: $3,861,400.

Cook County account 05211140110000

Assessor market value
$3,861,400
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
6,339 sqft
$609 per sqft
Year built
2010
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 4.2% from $4,030,000 in 2025 to $3,861,400 in 2026.
  • Assessor market value per square footThe current public record shows about $609 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 362 residential records in the same neighborhood, the average assessor market value is about $580 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.9% on average.

Comparable assessments

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

  • 495 Sheridan Rd, Winnetka, IL 60093
    6,493 sqft | $633/sqft | built 2009 | Similar size (6,493 vs 6,339 sqft); Similar age (2009 vs 2010); Similar lot size (21,449 vs 22,390 sqft)
    $4,108,500
  • 1015 Sheridan Rd, Winnetka, IL 60093
    5,800 sqft | $581/sqft | built 2004 | 8% smaller (5,800 vs 6,339 sqft); Similar lot size (22,825 vs 22,390 sqft); Same quality (Average)
    $3,371,000
  • 697 Sheridan Rd, Winnetka, IL 60093
    5,751 sqft | $619/sqft | built 2006 | 9% smaller (5,751 vs 6,339 sqft); Similar age (2006 vs 2010); Similar lot size (21,792 vs 22,390 sqft)
    $3,560,000
  • 1131 Taylorsport Ln, Winnetka, IL 60093
    5,800 sqft | $483/sqft | built 2000 | 8% smaller (5,800 vs 6,339 sqft); Similar lot size (21,867 vs 22,390 sqft); Same quality (Average)
    $2,800,000
  • 693 Sheridan Rd, Winnetka, IL 60093
    7,103 sqft | $507/sqft | built 2003 | 12% larger (7,103 vs 6,339 sqft); Similar lot size (23,005 vs 22,390 sqft); Same quality (Average)
    $3,597,890

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 4.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$3,861,400−$168,600−4.2%
2025$4,030,000+$858,900+27.1%
2024$3,171,100$00.0%
2023$3,171,100−$248,900−7.3%
2022$3,420,000+$1,059,070+44.9%
2021$2,360,930$00.0%
2020$2,360,930——
6-year total+$1,500,470+63.6%