Cook County Value

870 Locust St, Winnetka, IL 60093

6 bed / 5 bath, 3,857 sqft, built 2023, in New Trier. Assessor market value for 2026: $2,661,150.

Cook County account 05173020200000

Assessor market value
$2,661,150
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,857 sqft
$690 per sqft
Year built
2023
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 9.6% from $2,943,250 in 2025 to $2,661,150 in 2026.
  • Assessor market value per square footThe current public record shows about $690 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 1,469 residential records in the same neighborhood, the average assessor market value is about $518 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.

  • 560 Sheridan Rd, Winnetka, IL 60093
    4,079 sqft | $754/sqft | built 2022 | 6% larger (4,079 vs 3,857 sqft); Similar age (2022 vs 2023); Similar lot size (12,240 vs 12,750 sqft)
    $3,075,650
  • 525 Ash St, Winnetka, IL 60093
    3,904 sqft | $772/sqft | built 2024 | Similar size (3,904 vs 3,857 sqft); Similar age (2024 vs 2023); Similar lot size (13,651 vs 12,750 sqft)
    $3,012,760
  • 807 Prospect Ave, Winnetka, IL 60093
    3,840 sqft | $715/sqft | built 2013 | Similar size (3,840 vs 3,857 sqft); Similar lot size (12,000 vs 12,750 sqft); Same quality (Average)
    $2,747,420
  • 1144 Asbury Ave, Winnetka, IL 60093
    3,917 sqft | $656/sqft | built 2013 | Similar size (3,917 vs 3,857 sqft); Similar lot size (11,925 vs 12,750 sqft); Same quality (Average)
    $2,569,550
  • 826 Locust St, Winnetka, IL 60093
    3,653 sqft | $594/sqft | built 2015 | 5% smaller (3,653 vs 3,857 sqft); Similar lot size (12,280 vs 12,750 sqft); Same quality (Average)
    $2,168,980

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: . 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 9.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,661,150−$282,100−9.6%
2025$2,943,250+$2,656,370+926.0%
2024$286,880−$363,980−55.9%
2020$650,860——
6-year total+$2,010,290+308.9%