Cook County Value

1257 Richmond Ln, Wilmette, IL 60091

4 bed / 3 bath, 3,368 sqft, built 1940, in New Trier. Assessor market value for 2026: $1,487,310.

Cook County account 05284070120000

Assessor market value
$1,487,310
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,368 sqft
$442 per sqft
Year built
1940
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 14.0% from $1,730,010 in 2025 to $1,487,310 in 2026.
  • Assessor market value per square footThe current public record shows about $442 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 809 residential records in the same neighborhood, the average assessor market value is about $540 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.4% on average.

Comparable assessments

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

  • 1217 Richmond Ln, Wilmette, IL 60091
    3,463 sqft | $453/sqft | built 1940 | Similar size (3,463 vs 3,368 sqft); Built same year (1940); Similar lot size (6,380 vs 6,726 sqft)
    $1,570,000
  • 1241 Richmond Ln, Wilmette, IL 60091
    3,188 sqft | $388/sqft | built 1939 | 5% smaller (3,188 vs 3,368 sqft); Similar age (1939 vs 1940); Similar lot size (6,604 vs 6,726 sqft)
    $1,238,000
  • 1233 Richmond Ln, Wilmette, IL 60091
    3,103 sqft | $458/sqft | built 1939 | 8% smaller (3,103 vs 3,368 sqft); Similar age (1939 vs 1940); Similar lot size (6,105 vs 6,726 sqft)
    $1,420,000
  • 1213 Richmond Ln, Wilmette, IL 60091
    3,069 sqft | $437/sqft | built 1943 | 9% smaller (3,069 vs 3,368 sqft); Similar age (1943 vs 1940); Similar lot size (6,215 vs 6,726 sqft)
    $1,341,510
  • 1220 Richmond Ln, Wilmette, IL 60091
    2,891 sqft | $481/sqft | built 1940 | 14% smaller (2,891 vs 3,368 sqft); Built same year (1940); Similar lot size (6,938 vs 6,726 sqft)
    $1,390,010

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 14.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,487,310−$242,700−14.0%
2025$1,730,010+$510,000+41.8%
2024$1,220,010$00.0%
2023$1,220,010$00.0%
2022$1,220,010+$116,010+10.5%
2021$1,104,000——
5-year total+$383,310+34.7%