Cook County Value

311 Kilpatrick Ave, Wilmette, IL 60091

4 bed / 3 bath, 1,711 sqft, built 1957, in New Trier. Assessor market value for 2026: $514,790.

Cook County account 05323020250000

Assessor market value
$514,790
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,711 sqft
$301 per sqft
Year built
1957
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 9.7% from $570,000 in 2025 to $514,790 in 2026.
  • Assessor market value per square footThe current public record shows about $301 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 1,109 residential records in the same neighborhood, the average assessor market value is about $311 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -2.1% on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 721 Laporte Ave, Wilmette, IL 60091
    1,703 sqft | $321/sqft | built 1957 | Similar size (1,703 vs 1,711 sqft); Built same year (1957); Similar lot size (8,643 vs 8,663 sqft)
    $545,940
  • 715 Laporte Ave Hse, Wilmette, IL 60091
    1,684 sqft | $327/sqft | built 1958 | Similar size (1,684 vs 1,711 sqft); Similar age (1958 vs 1957); Similar lot size (8,643 vs 8,663 sqft)
    $550,580
  • 231 Kilpatrick Ave, Wilmette, IL 60091
    1,760 sqft | $352/sqft | built 1958 | Similar size (1,760 vs 1,711 sqft); Similar age (1958 vs 1957); Similar lot size (8,663 vs 8,663 sqft)
    $620,000
  • 212 Heather Ln, Wilmette, IL 60091
    1,718 sqft | $338/sqft | built 1958 | Similar size (1,718 vs 1,711 sqft); Similar age (1958 vs 1957); Similar lot size (8,540 vs 8,663 sqft)
    $580,000
  • 208 Valley View St, Wilmette, IL 60091
    1,705 sqft | $339/sqft | built 1960 | Similar size (1,705 vs 1,711 sqft); Similar age (1960 vs 1957); Similar lot size (8,687 vs 8,663 sqft)
    $578,020

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 9.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$514,790−$55,210−9.7%
2025$570,000+$70,000+14.0%
2024$500,000$00.0%
2023$500,000$00.0%
2022$500,000+$178,320+55.4%
2021$321,680+$8,490+2.7%
2020$313,190——
6-year total+$201,600+64.4%