Cook County Value

812 Ouilmette Ln, Wilmette, IL 60091

3 bed / 1 bath, 1,255 sqft, built 1950, in New Trier. Assessor market value for 2026: $550,000.

Cook County account 05331000350000

Assessor market value
$550,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,255 sqft
$438 per sqft
Year built
1950
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 $550,000 in 2025 to $550,000 in 2026.
  • Assessor market value per square footThe current public record shows about $438 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.

  • 315 Central Park Ave, Wilmette, IL 60091
    1,323 sqft | $356/sqft | built 1952 | 5% larger (1,323 vs 1,255 sqft); Similar age (1952 vs 1950); Similar lot size (6,500 vs 6,780 sqft)
    $471,620
  • 1530 Spencer Ave, Wilmette, IL 60091
    1,327 sqft | $433/sqft | built 1950 | 6% larger (1,327 vs 1,255 sqft); Built same year (1950); Similar lot size (7,200 vs 6,780 sqft)
    $575,040
  • 2141 Lake Ave, Wilmette, IL 60091
    1,180 sqft | $387/sqft | built 1948 | 6% smaller (1,180 vs 1,255 sqft); Similar age (1948 vs 1950); Similar lot size (6,460 vs 6,780 sqft)
    $456,920
  • 215 10th St, Wilmette, IL 60091
    1,220 sqft | $504/sqft | built 1954 | Similar size (1,220 vs 1,255 sqft); Similar age (1954 vs 1950); Lot 11% smaller (6,030 vs 6,780 sqft)
    $615,290
  • 2145 Lake Ave, Wilmette, IL 60091
    1,358 sqft | $420/sqft | built 1951 | 8% larger (1,358 vs 1,255 sqft); Similar age (1951 vs 1950); Similar lot size (7,380 vs 6,780 sqft)
    $570,000

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: . 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$550,000$00.0%
2025$550,000+$100,000+22.2%
2024$450,000$00.0%
2023$450,000$00.0%
2022$450,000−$3,570−0.8%
2021$453,570+$100.0%
2020$453,560——
6-year total+$96,440+21.3%