Cook County Value

509 Brier St Kenilworth, IL 60043

4 bed / 3 bath, 2,724 sqft, built 1944, in New Trier. Assessor market value for 2026: $1,226,880.

Cook County account 05282070140000

Assessor market value
$1,226,880
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,724 sqft
$450 per sqft
Year built
1944
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 60043 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 11.0% from $1,379,000 in 2025 to $1,226,880 in 2026.
  • Assessor market value per square footThe current public record shows about $450 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 60043.
  • Neighborhood value signalAmong 1,584 residential records in the same neighborhood, the average assessor market value is about $440 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.9% on average.

Comparable assessments

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

  • 720 Roger Ave Kenilworth, IL 60043
    2,731 sqft | $502/sqft | built 1939 | Similar size (2,731 vs 2,724 sqft); Similar age (1939 vs 1944); Similar lot size (7,550 vs 7,500 sqft)
    $1,370,000
  • 2221 Kenilworth Ave, Wilmette, IL 60091
    2,724 sqft | $330/sqft | built 1943 | Similar size (2,724 vs 2,724 sqft); Similar age (1943 vs 1944); Lot 11% smaller (6,700 vs 7,500 sqft)
    $898,810
  • 411 Ridge Rd Kenilworth, IL 60043
    2,719 sqft | $428/sqft | built 1937 | Similar size (2,719 vs 2,724 sqft); Similar lot size (7,734 vs 7,500 sqft); Same quality (Average)
    $1,165,000
  • 2315 Greenwood Ave, Wilmette, IL 60091
    2,769 sqft | $394/sqft | built 1939 | Similar size (2,769 vs 2,724 sqft); Similar age (1939 vs 1944); Similar lot size (7,200 vs 7,500 sqft)
    $1,090,000
  • 2132 Kenilworth Ave, Wilmette, IL 60091
    2,673 sqft | $420/sqft | built 1947 | Similar size (2,673 vs 2,724 sqft); Similar age (1947 vs 1944); Lot 11% smaller (6,700 vs 7,500 sqft)
    $1,123,220

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 11.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,226,880−$152,120−11.0%
2025$1,379,000+$501,450+57.1%
2024$877,550$00.0%
2023$877,550−$89,760−9.3%
2022$967,310+$287,350+42.3%
2021$679,960−$53,810−7.3%
2020$733,770——
6-year total+$493,110+67.2%