Cook County Value

117 Dupee Pl, Wilmette, IL 60091

3 bed / 1 bath, 1,729 sqft, built 1915, in New Trier. Assessor market value for 2026: $740,000.

Cook County account 05353040120000

Assessor market value
$740,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,729 sqft
$428 per sqft
Year built
1915
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 60091 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 $740,000 in 2025 to $740,000 in 2026.
  • Assessor market value per square footThe current public record shows about $428 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 60091.
  • Neighborhood value signalAmong 1,671 residential records in the same neighborhood, the average assessor market value is about $458 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.4% on average.

Comparable assessments

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

  • 111 Dupee Pl, Wilmette, IL 60091
    1,710 sqft | $451/sqft | built 1923 | Similar size (1,710 vs 1,729 sqft); Similar lot size (5,080 vs 5,080 sqft); Same quality (Average)
    $770,610
  • 105 Dupee Pl, Wilmette, IL 60091
    1,790 sqft | $466/sqft | built 1917 | Similar size (1,790 vs 1,729 sqft); Similar age (1917 vs 1915); Similar lot size (5,080 vs 5,080 sqft)
    $834,920
  • 322 Oak Cir, Wilmette, IL 60091
    1,741 sqft | $476/sqft | built 1924 | Similar size (1,741 vs 1,729 sqft); Similar lot size (5,184 vs 5,080 sqft); Same quality (Average)
    $828,670
  • 435 Prairie Ave, Wilmette, IL 60091
    1,702 sqft | $441/sqft | built 1924 | Similar size (1,702 vs 1,729 sqft); Similar lot size (4,990 vs 5,080 sqft); Same quality (Average)
    $751,070
  • 109 4th St, Wilmette, IL 60091
    1,784 sqft | $493/sqft | built 1913 | Similar size (1,784 vs 1,729 sqft); Similar age (1913 vs 1915); Lot 11% larger (5,625 vs 5,080 sqft)
    $880,000

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

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$740,000$00.0%
2025$740,000+$210,000+39.6%
2024$530,000$00.0%
2023$530,000$00.0%
2022$530,000+$43,240+8.9%
2021$486,760$00.0%
2020$486,760——
6-year total+$253,240+52.0%