Cook County Value

1921 Washington Ave, Wilmette, IL 60091

5 bed / 4 bath, 3,185 sqft, built 2025, in New Trier Assessor market value for 2026: $1,600,000.

Cook County account 05331130070000

Likely too high

about $61,000

8 similar homes nearby point to a value about $61,000 lower than yours.

Assessor market value$1,600,000
Similar homes$1,538,514
$61,486 gap · bars start at $0

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

Assessor market value
$1,600,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,185 sqft
$502 per sqft
Year built
2025
Average quality

Why we think so

Similar homes' assessments

Strong

7 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $479.83/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $138,600. Counting your land in place of theirs where theirs is less, they support a value of $1,538,514.

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 changed from $746,540 in 2025 to $1,600,000 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Assessor market value per square footThe current public record shows about $502 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 1,944 residential records in the same neighborhood, the average assessor market value is about $372 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.2% on average.

Comparable assessments

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

  • 146 Sterling Ln, Wilmette, IL 60091
    3,352 sqft | $597/sqft | built 2025 | 5% larger (3,352 vs 3,185 sqft); Built same year (2025); Similar lot size (6,381 vs 6,600 sqft)
    $2,000,000
  • 1933 Washington Ave, Wilmette, IL 60091
    3,459 sqft | $353/sqft | built 2025 | 9% larger (3,459 vs 3,185 sqft); Built same year (2025); Similar lot size (6,600 vs 6,600 sqft)
    $1,221,460
  • 1925 Highland Ave, Wilmette, IL 60091
    3,012 sqft | $492/sqft | built 2023 | 5% smaller (3,012 vs 3,185 sqft); Similar age (2023 vs 2025); Similar lot size (6,600 vs 6,600 sqft)
    $1,480,750
  • 215 17th St, Wilmette, IL 60091
    3,409 sqft | $394/sqft | built 2024 | 7% larger (3,409 vs 3,185 sqft); Similar age (2024 vs 2025); Similar lot size (6,400 vs 6,600 sqft)
    $1,344,600
  • 1936 Highland Ave, Wilmette, IL 60091
    3,793 sqft | $480/sqft | built 2022 | Similar age (2022 vs 2025); Similar lot size (6,600 vs 6,600 sqft); Same quality (Average)
    $1,820,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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

Up 114.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,600,000+$853,460+114.3%
2025$746,540+$186,540+33.3%
2024$560,000$00.0%
2023$560,000$00.0%
2022$560,000+$16,110+3.0%
2021$543,890+$100.0%
2020$543,880——
6-year total+$1,056,120+194.2%