Cook County Value

773 Prospect Ave, Winnetka, IL 60093

4 bed / 2 bath, 2,746 sqft, built 1903, in New Trier. Assessor market value for 2026: $1,414,160.

Cook County account 05174080120000

Assessor market value
$1,414,160
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,746 sqft
$515 per sqft
Year built
1903
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 6.3% from $1,510,000 in 2025 to $1,414,160 in 2026.
  • Assessor market value per square footThe current public record shows about $515 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.

  • 241 Essex Rd, Winnetka, IL 60093
    2,728 sqft | $536/sqft | built 1914 | Similar size (2,728 vs 2,746 sqft); Similar lot size (12,728 vs 12,600 sqft); Same quality (Average)
    $1,462,030
  • 660 Sheridan Rd, Winnetka, IL 60093
    2,724 sqft | $463/sqft | built 1908 | Similar size (2,724 vs 2,746 sqft); Similar age (1908 vs 1903); Lot 11% smaller (11,250 vs 12,600 sqft)
    $1,260,690
  • 849 Lincoln Ave, Winnetka, IL 60093
    2,792 sqft | $517/sqft | built 1899 | Similar size (2,792 vs 2,746 sqft); Similar age (1899 vs 1903); Lot 11% smaller (11,250 vs 12,600 sqft)
    $1,443,440
  • 1125 Gage St, Winnetka, IL 60093
    2,635 sqft | $459/sqft | built 1913 | Similar size (2,635 vs 2,746 sqft); Similar lot size (13,324 vs 12,600 sqft); Same quality (Average)
    $1,209,270
  • 577 Ash St, Winnetka, IL 60093
    2,838 sqft | $532/sqft | built 1899 | Similar size (2,838 vs 2,746 sqft); Similar age (1899 vs 1903); Similar lot size (11,400 vs 12,600 sqft)
    $1,509,410

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 6.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,414,160−$95,840−6.3%
2025$1,510,000+$531,820+54.4%
2024$978,180$00.0%
2023$978,180−$231,820−19.2%
2022$1,210,000+$285,070+30.8%
2021$924,930$00.0%
2020$924,930——
6-year total+$489,230+52.9%