Cook County Value

215 15th St, Wilmette, IL 60091

4 bed / 2 bath, 1,640 sqft, built 1908, in New Trier. Assessor market value for 2026: $386,360.

Cook County account 05334060270000

Assessor market value
$386,360
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,640 sqft
$236 per sqft
Year built
1908
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 11.1% from $434,710 in 2025 to $386,360 in 2026.
  • Assessor market value per square footThe current public record shows about $236 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.

  • 215 15th St, Wilmette, IL 60091
    1,640 sqft | $107/sqft | built 1908 | Similar size (1,640 vs 1,640 sqft); Built same year (1908); Similar lot size (3,225 vs 3,225 sqft)
    $175,200
  • 612 Harvard St, Wilmette, IL 60091
    1,593 sqft | $446/sqft | built 1908 | Similar size (1,593 vs 1,640 sqft); Built same year (1908); Lot 19% larger (3,850 vs 3,225 sqft)
    $710,010
  • 129 5th St, Wilmette, IL 60091
    1,570 sqft | $126/sqft | built 1914 | Similar size (1,570 vs 1,640 sqft); Lot 16% larger (3,750 vs 3,225 sqft); Same quality (Average)
    $197,510
  • 129 5th St, Wilmette, IL 60091
    1,570 sqft | $270/sqft | built 1914 | Similar size (1,570 vs 1,640 sqft); Lot 16% larger (3,750 vs 3,225 sqft); Same quality (Average)
    $424,380
  • 1437 Wilmette Ave, Wilmette, IL 60091
    1,700 sqft | $410/sqft | built 1921 | Similar size (1,700 vs 1,640 sqft); Lot 18% larger (3,793 vs 3,225 sqft); Same quality (Average)
    $697,360

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: . 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 11.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$386,360−$48,350−11.1%
2025$434,710+$45,020+11.6%
2024$389,690−$43,560−10.1%
2023$433,250$00.0%
2022$433,250+$213,760+97.4%
2021$219,490$00.0%
2020$219,490——
6-year total+$166,870+76.0%