Cook County Value

330 White Oak Ln, Winnetka, IL 60093

5 bed / 4 bath, 5,532 sqft, built 2007, in New Trier. Assessor market value for 2026: $4,186,920.

Cook County account 05204000400000

Assessor market value
$4,186,920
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
5,532 sqft
$757 per sqft
Year built
2007
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 2.7% from $4,303,000 in 2025 to $4,186,920 in 2026.
  • Assessor market value per square footThe current public record shows about $757 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 608 residential records in the same neighborhood, the average assessor market value is about $670 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.3% on average.

Comparable assessments

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

  • 13 Woodley Rd, Winnetka, IL 60093
    5,260 sqft | $522/sqft | built 2015 | Similar size (5,260 vs 5,532 sqft); Similar lot size (37,897 vs 35,366 sqft); Same quality (Average)
    $2,744,980
  • 325 Woodley Rd, Winnetka, IL 60093
    5,393 sqft | $624/sqft | built 2008 | Similar size (5,393 vs 5,532 sqft); Similar age (2008 vs 2007); Same quality (Average)
    $3,365,980
  • 130 Thorntree Ln, Winnetka, IL 60093
    5,797 sqft | $505/sqft | built 1998 | Similar size (5,797 vs 5,532 sqft); Lot 16% smaller (29,730 vs 35,366 sqft); Same quality (Average)
    $2,926,570
  • 130 Evergreen Ln, Winnetka, IL 60093
    5,646 sqft | $496/sqft | built 1996 | Similar size (5,646 vs 5,532 sqft); Same quality (Average); Same neighborhood
    $2,800,160
  • 727 Ardsley Rd, Winnetka, IL 60093
    5,152 sqft | $732/sqft | built 2021 | 7% smaller (5,152 vs 5,532 sqft); Lot 10% smaller (31,742 vs 35,366 sqft); Same quality (Average)
    $3,773,480

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 2.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$4,186,920−$116,080−2.7%
2025$4,303,000+$974,470+29.3%
2024$3,328,530$00.0%
2023$3,328,530$00.0%
2022$3,328,530+$871,530+35.5%
2021$2,457,000$00.0%
2020$2,457,000——
6-year total+$1,729,920+70.4%