Cook County Value

3501 Forest Ave, Wilmette, IL 60091

4 bed / 2 bath, 1,664 sqft, built 1938, in New Trier. Assessor market value for 2026: $533,470.

Cook County account 05303140080000

Assessor market value
$533,470
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,664 sqft
$321 per sqft
Year built
1938
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 12.5% from $610,000 in 2025 to $533,470 in 2026.
  • Assessor market value per square footThe current public record shows about $321 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 1,980 residential records in the same neighborhood, the average assessor market value is about $334 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.5% on average.

Comparable assessments

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

  • 1665 Harding Rd Northfield, IL 60093
    1,674 sqft | $327/sqft | built 1938 | Similar size (1,674 vs 1,664 sqft); Built same year (1938); Similar lot size (7,400 vs 7,779 sqft)
    $547,690
  • 3510 Walnut Ave, Wilmette, IL 60091
    1,682 sqft | $363/sqft | built 1942 | Similar size (1,682 vs 1,664 sqft); Similar age (1942 vs 1938); Similar lot size (7,920 vs 7,779 sqft)
    $610,000
  • 706 Echo Ln, Glenview, IL 60025
    1,611 sqft | $356/sqft | built 1941 | Similar size (1,611 vs 1,664 sqft); Similar age (1941 vs 1938); Similar lot size (7,512 vs 7,779 sqft)
    $573,360
  • 3506 Walnut Ave, Wilmette, IL 60091
    1,624 sqft | $328/sqft | built 1942 | Similar size (1,624 vs 1,664 sqft); Similar age (1942 vs 1938); Similar lot size (7,920 vs 7,779 sqft)
    $533,210
  • 308 Lagoon Dr Northfield, IL 60093
    1,755 sqft | $308/sqft | built 1938 | 6% larger (1,755 vs 1,664 sqft); Built same year (1938); Similar lot size (7,654 vs 7,779 sqft)
    $540,000

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: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 12.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$533,470−$76,530−12.5%
2025$610,000+$248,090+68.6%
2024$361,910−$40,720−10.1%
2023$402,630−$77,370−16.1%
2022$480,000+$203,140+73.4%
2021$276,860+$200.0%
2020$276,840——
6-year total+$256,630+92.7%