Cook County Value

850 Heather Ln, Winnetka, IL 60093

6 bed / 5 bath, 5,404 sqft, built 1994, in New Trier. Assessor market value for 2026: $2,363,800.

Cook County account 05183080210000

Assessor market value
$2,363,800
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
5,404 sqft
$437 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 6.7% from $2,533,950 in 2025 to $2,363,800 in 2026.
  • Assessor market value per square footThe current public record shows about $437 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 326 residential records in the same neighborhood, the average assessor market value is about $458 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.0% on average.

Comparable assessments

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

  • 1580 Asbury Ave, Winnetka, IL 60093
    5,435 sqft | $458/sqft | built 2002 | Similar size (5,435 vs 5,404 sqft); Similar lot size (21,805 vs 21,746 sqft); Same quality (Average)
    $2,488,230
  • 997 Asbury Ct, Winnetka, IL 60093
    5,794 sqft | $433/sqft | built 1997 | 7% larger (5,794 vs 5,404 sqft); Similar age (1997 vs 1994); Similar lot size (21,951 vs 21,746 sqft)
    $2,510,000
  • 875 Heather Ln, Winnetka, IL 60093
    5,288 sqft | $424/sqft | built 1990 | Similar size (5,288 vs 5,404 sqft); Similar age (1990 vs 1994); Similar lot size (21,970 vs 21,746 sqft)
    $2,240,000
  • 1585 Hickory Ln, Winnetka, IL 60093
    5,396 sqft | $424/sqft | built 2000 | Similar size (5,396 vs 5,404 sqft); Similar lot size (21,781 vs 21,746 sqft); Same quality (Average)
    $2,290,000
  • 777 Heather Ln, Winnetka, IL 60093
    5,299 sqft | $521/sqft | built 2007 | Similar size (5,299 vs 5,404 sqft); Similar lot size (21,942 vs 21,746 sqft); Same quality (Average)
    $2,762,550

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 6.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,363,800−$170,150−6.7%
2025$2,533,950+$343,940+15.7%
2024$2,190,010$00.0%
2023$2,190,010$00.0%
2022$2,190,010+$719,700+48.9%
2021$1,470,310+$100.0%
2020$1,470,300——
6-year total+$893,500+60.8%