Cook County Value

840 Heather Ln, Winnetka, IL 60093

3 bed / 2 bath, 1,653 sqft, built 1956, in New Trier Assessor market value for 2026: $825,180.

Cook County account 05183080220000

Assessor market value
$825,180
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,653 sqft
$499 per sqft
Year built
1956
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 7.3% from $890,000 in 2025 to $825,180 in 2026.
  • Assessor market value per square footThe current public record shows about $499 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.

  • 1280 Sunview Ln, Winnetka, IL 60093
    1,553 sqft | $470/sqft | built 1953 | 6% smaller (1,553 vs 1,653 sqft); Similar age (1953 vs 1956); Similar lot size (21,755 vs 21,746 sqft)
    $730,000
  • 1327 Hackberry Ln, Winnetka, IL 60093
    1,862 sqft | $602/sqft | built 1954 | 13% larger (1,862 vs 1,653 sqft); Similar age (1954 vs 1956); Lot 13% smaller (19,000 vs 21,746 sqft)
    $1,120,000
  • 855 Heather Ln, Winnetka, IL 60093
    2,062 sqft | $508/sqft | built 1954 | Similar age (1954 vs 1956); Similar lot size (21,970 vs 21,746 sqft); Same quality (Average)
    $1,048,290
  • 1311 Plum Tree Ln, Winnetka, IL 60093
    1,943 sqft | $521/sqft | built 1955 | Similar age (1955 vs 1956); Similar lot size (23,240 vs 21,746 sqft); Same quality (Average)
    $1,011,650
  • 833 Sumac Ln, Winnetka, IL 60093
    1,948 sqft | $512/sqft | built 1957 | Similar age (1957 vs 1956); Lot 10% larger (23,964 vs 21,746 sqft); Same quality (Average)
    $996,850

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 7.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$825,180−$64,820−7.3%
2025$890,000−$30,010−3.3%
2024$920,010$00.0%
2023$920,010$00.0%
2022$920,010+$320,840+53.5%
2021$599,170−$56,550−8.6%
2020$655,720——
6-year total+$169,460+25.8%