Cook County Value

1538 Spencer Ave, Wilmette, IL 60091

5 bed / 2 bath, 2,878 sqft, built 1923, in New Trier. Assessor market value for 2026: $1,212,520.

Cook County account 05332020220000

Assessor market value
$1,212,520
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,878 sqft
$421 per sqft
Year built
1923
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 decreased 5.4% from $1,281,650 in 2025 to $1,212,520 in 2026.
  • Assessor market value per square footThe current public record shows about $421 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

Similar public appraisal records selected for this property's equity comparison.

  • 1201 Gregory Ave, Wilmette, IL 60091
    2,931 sqft | $283/sqft | built 1923 | Similar size (2,931 vs 2,878 sqft); Built same year (1923); Similar lot size (7,000 vs 7,200 sqft)
    $830,000
  • 1518 Spencer Ave, Wilmette, IL 60091
    2,929 sqft | $442/sqft | built 1926 | Similar size (2,929 vs 2,878 sqft); Similar age (1926 vs 1923); Similar lot size (7,200 vs 7,200 sqft)
    $1,293,710
  • 1520 Washington Ave, Wilmette, IL 60091
    2,923 sqft | $403/sqft | built 1925 | Similar size (2,923 vs 2,878 sqft); Similar age (1925 vs 1923); Similar lot size (7,500 vs 7,200 sqft)
    $1,179,400
  • 1524 Wilmette Ave, Wilmette, IL 60091
    2,913 sqft | $422/sqft | built 1923 | Similar size (2,913 vs 2,878 sqft); Built same year (1923); Similar lot size (7,800 vs 7,200 sqft)
    $1,230,000
  • 100 Woodbine Ave, Wilmette, IL 60091
    2,775 sqft | $437/sqft | built 1925 | Similar size (2,775 vs 2,878 sqft); Similar age (1925 vs 1923); Similar lot size (6,977 vs 7,200 sqft)
    $1,213,260

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 5.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,212,520−$69,130−5.4%
2025$1,281,650+$321,650+33.5%
2024$960,000$00.0%
2023$960,000$00.0%
2022$960,000+$269,250+39.0%
2021$690,750+$100.0%
2020$690,740——
6-year total+$521,780+75.5%