Cook County Value

812 Leyden Ln, Wilmette, IL 60091

4 bed / 4 bath, 3,130 sqft, built 2006, in New Trier. Assessor market value for 2026: $1,250,990.

Cook County account 05321180190000

Assessor market value
$1,250,990
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,130 sqft
$400 per sqft
Year built
2006
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 4.3% from $1,307,550 in 2025 to $1,250,990 in 2026.
  • Assessor market value per square footThe current public record shows about $400 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 1,944 residential records in the same neighborhood, the average assessor market value is about $372 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.2% on average.

Comparable assessments

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

  • 220 Locust Rd, Wilmette, IL 60091
    3,149 sqft | $390/sqft | built 2004 | Similar size (3,149 vs 3,130 sqft); Similar age (2004 vs 2006); Similar lot size (8,460 vs 8,400 sqft)
    $1,226,590
  • 245 Vista Dr, Wilmette, IL 60091
    3,158 sqft | $426/sqft | built 2010 | Similar size (3,158 vs 3,130 sqft); Similar age (2010 vs 2006); Similar lot size (8,400 vs 8,400 sqft)
    $1,345,180
  • 2131 Washington Ave, Wilmette, IL 60091
    3,196 sqft | $436/sqft | built 2006 | Similar size (3,196 vs 3,130 sqft); Built same year (2006); Similar lot size (8,580 vs 8,400 sqft)
    $1,394,340
  • 426 W Wilshire Dr, Wilmette, IL 60091
    3,106 sqft | $398/sqft | built 2004 | Similar size (3,106 vs 3,130 sqft); Similar age (2004 vs 2006); Similar lot size (8,435 vs 8,400 sqft)
    $1,235,040
  • 2711 Orchard Ln, Wilmette, IL 60091
    3,095 sqft | $411/sqft | built 2006 | Similar size (3,095 vs 3,130 sqft); Built same year (2006); Similar lot size (8,618 vs 8,400 sqft)
    $1,271,970

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 4.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,250,990−$56,560−4.3%
2025$1,307,550+$332,980+34.2%
2024$974,570——
2-year total+$276,420+28.4%