Cook County Value

887 Oak St, Winnetka, IL 60093

4 bed / 2 bath, 2,518 sqft, built 1909, in New Trier. Assessor market value for 2026: $1,075,650.

Cook County account 05202100320000

Assessor market value
$1,075,650
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,518 sqft
$427 per sqft
Year built
1909
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 8.1% from $1,170,010 in 2025 to $1,075,650 in 2026.
  • Assessor market value per square footThe current public record shows about $427 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 609 residential records in the same neighborhood, the average assessor market value is about $514 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.0% on average.

Comparable assessments

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

  • 909 Willow Rd, Winnetka, IL 60093
    2,515 sqft | $437/sqft | built 1915 | Similar size (2,515 vs 2,518 sqft); Similar lot size (9,350 vs 9,350 sqft); Same quality (Average)
    $1,100,010
  • 899 Willow Rd, Winnetka, IL 60093
    2,532 sqft | $355/sqft | built 1906 | Similar size (2,532 vs 2,518 sqft); Similar age (1906 vs 1909); Similar lot size (9,350 vs 9,350 sqft)
    $900,010
  • 1072 Spruce St, Winnetka, IL 60093
    2,518 sqft | $428/sqft | built 1908 | Similar size (2,518 vs 2,518 sqft); Similar age (1908 vs 1909); Similar lot size (8,850 vs 9,350 sqft)
    $1,076,520
  • 982 Elm St, Winnetka, IL 60093
    2,490 sqft | $466/sqft | built 1917 | Similar size (2,490 vs 2,518 sqft); Similar lot size (9,350 vs 9,350 sqft); Same quality (Average)
    $1,160,010
  • 898 Cherry St, Winnetka, IL 60093
    2,499 sqft | $443/sqft | built 1914 | Similar size (2,499 vs 2,518 sqft); Similar age (1914 vs 1909); Similar lot size (9,350 vs 9,350 sqft)
    $1,107,710

Recent comparable sales

Sales selected by similarity to the subject property.

  • 664 Lincoln Ave, Winnetka, IL 60093
    2,820 sqft | $566/sqft | built 1903 | 12% size difference (2,820 sqft); Moderate age difference (6 years older); Within 1 bedroom (5 vs 4)
    $1,596,000

Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 8.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,075,650−$94,360−8.1%
2025$1,170,010+$125,250+12.0%
2024$1,044,760−$65,730−5.9%
2023$1,110,490−$79,520−6.7%
2022$1,190,010+$357,560+43.0%
2021$832,450$00.0%
2020$832,450——
6-year total+$243,200+29.2%