Cook County Value

840 Locust St, Winnetka, IL 60093

5 bed / 4 bath, 4,142 sqft, built 2018, in New Trier. Assessor market value for 2026: $2,728,940.

Cook County account 05173050030000

Assessor market value
$2,728,940
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,142 sqft
$659 per sqft
Year built
2018
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 8.7% from $2,990,000 in 2025 to $2,728,940 in 2026.
  • Assessor market value per square footThe current public record shows about $659 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.

  • 855 N Gordon Ter, Winnetka, IL 60093
    4,205 sqft | $659/sqft | built 2018 | Similar size (4,205 vs 4,142 sqft); Built same year (2018); Similar lot size (14,489 vs 14,550 sqft)
    $2,769,130
  • 576 Maple St, Winnetka, IL 60093
    4,209 sqft | $701/sqft | built 2014 | Similar size (4,209 vs 4,142 sqft); Similar age (2014 vs 2018); Similar lot size (14,160 vs 14,550 sqft)
    $2,950,100
  • 795 Lincoln Ave, Winnetka, IL 60093
    4,161 sqft | $868/sqft | built 2013 | Similar size (4,161 vs 4,142 sqft); Similar age (2013 vs 2018); Similar lot size (15,000 vs 14,550 sqft)
    $3,610,000
  • 562 Cherry St, Winnetka, IL 60093
    4,075 sqft | $586/sqft | built 2007 | Similar size (4,075 vs 4,142 sqft); Similar lot size (13,838 vs 14,550 sqft); Same quality (Average)
    $2,387,500
  • 566 Willow Rd, Winnetka, IL 60093
    4,101 sqft | $651/sqft | built 2007 | Similar size (4,101 vs 4,142 sqft); Similar lot size (14,390 vs 14,550 sqft); Same quality (Average)
    $2,670,000

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 8.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,728,940−$261,060−8.7%
2025$2,990,000+$989,320+49.4%
2024$2,000,680−$160,710−7.4%
2023$2,161,390−$148,610−6.4%
2022$2,310,000+$814,580+54.5%
2021$1,495,420−$71,900−4.6%
2020$1,567,320——
6-year total+$1,161,620+74.1%