Cook County Value

145 Thorntree Ln, Winnetka, IL 60093

5 bed / 5 bath, 5,682 sqft, built 1976, in New Trier. Assessor market value for 2026: $3,474,560.

Cook County account 05204070690000

Likely too high

about $483,000

8 similar homes nearby point to a value about $483,000 lower than yours.

Assessor market value$3,474,560
Similar homes$2,991,118
$483,442 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$3,474,560
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
5,682 sqft
$612 per sqft
Year built
1976

Why we think so

Similar homes' assessments

Strong

8 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $526.42/sqft, which supports a value of $2,991,118.

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 stayed about the same, from $3,474,560 in 2025 to $3,474,560 in 2026.
  • Assessor market value per square footThe current public record shows about $612 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

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 303 Woodley Rd, Winnetka, IL 60093
    5,758 sqft | $538/sqft | built 1972 | Similar size (5,758 vs 5,682 sqft); Similar age (1972 vs 1976); Lot 19% larger (44,706 vs 37,418 sqft)
    $3,100,000
  • 320 Woodley Rd, Winnetka, IL 60093
    5,206 sqft | $548/sqft | built 1971 | 8% smaller (5,206 vs 5,682 sqft); Similar age (1971 vs 1976); Lot 11% larger (41,360 vs 37,418 sqft)
    $2,851,700
  • 126 Woodley Mnr, Winnetka, IL 60093
    5,453 sqft | $526/sqft | built 1962 | Similar size (5,453 vs 5,682 sqft); Lot 15% larger (42,994 vs 37,418 sqft); Same bed/bath (5/5)
    $2,870,040
  • 29 Woodley Rd, Winnetka, IL 60093
    5,040 sqft | $531/sqft | built 1967 | 11% smaller (5,040 vs 5,682 sqft); Similar lot size (34,264 vs 37,418 sqft); Same bed/bath (5/5)
    $2,676,850
  • 99 Woodley Rd, Winnetka, IL 60093
    5,110 sqft | $498/sqft | built 1961 | 10% smaller (5,110 vs 5,682 sqft); Similar lot size (40,215 vs 37,418 sqft); Same bed/bath (5/5)
    $2,545,950

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

No change in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$3,474,560$00.0%
2025$3,474,560+$1,244,960+55.8%
2024$2,229,600$00.0%
2023$2,229,600−$240,730−9.7%
2022$2,470,330+$658,660+36.4%
2021$1,811,670+$200.0%
2020$1,811,650——
6-year total+$1,662,910+91.8%