Cook County Value

639 Park Ave, Wilmette, IL 60091

4 bed / 4 bath, 3,486 sqft, built 2007, in New Trier. Assessor market value for 2026: $1,650,000.

Cook County account 05341080080000

Assessor market value
$1,650,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,486 sqft
$473 per sqft
Year built
2007
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 $1,650,000 in 2025 to $1,650,000 in 2026.
  • Assessor market value per square footThe current public record shows about $473 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.

  • 1504 Highland Ave, Wilmette, IL 60091
    3,535 sqft | $529/sqft | built 2010 | Similar size (3,535 vs 3,486 sqft); Similar age (2010 vs 2007); Similar lot size (7,750 vs 7,500 sqft)
    $1,869,140
  • 111 5th St, Wilmette, IL 60091
    3,361 sqft | $616/sqft | built 2015 | Similar size (3,361 vs 3,486 sqft); Similar lot size (7,500 vs 7,500 sqft); Same quality (Average)
    $2,070,000
  • 1017 Oakwood Ave, Wilmette, IL 60091
    3,529 sqft | $470/sqft | built 2000 | Similar size (3,529 vs 3,486 sqft); Similar lot size (8,050 vs 7,500 sqft); Same quality (Average)
    $1,657,670
  • 205 Central Park Ave, Wilmette, IL 60091
    3,516 sqft | $453/sqft | built 2003 | Similar size (3,516 vs 3,486 sqft); Similar age (2003 vs 2007); Similar lot size (7,800 vs 7,500 sqft)
    $1,593,800
  • 1526 Central Ave, Wilmette, IL 60091
    3,308 sqft | $474/sqft | built 2008 | 5% smaller (3,308 vs 3,486 sqft); Similar age (2008 vs 2007); Similar lot size (7,800 vs 7,500 sqft)
    $1,568,830

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$1,650,000$00.0%
2025$1,650,000+$570,000+52.8%
2024$1,080,000——
2-year total+$570,000+52.8%