Cook County Value

4209 Elm Ave, Brookfield, IL 60513

3 bed / 1 bath, 1,364 sqft, built 1951, in Lyons. Assessor market value for 2026: $320,000.

Cook County account 18032240040000

Possibly too high

about $19,000

8 similar homes nearby point to a value about $19,000 lower than yours.

Assessor market value$320,000
Similar homes$300,884
$19,116 gap · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$320,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,364 sqft
$235 per sqft
Year built
1951
Average quality

Why we think so

Similar homes' assessments

Moderate

7 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $220.59/sqft, which supports a value of $300,884.

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 60513 and Lyons assessment pages.

Local guide: Lyons Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lyons, appeals to the Assessor closed . Board of Review dates for Lyons have not been published yet.

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 increased 20.5% from $265,560 in 2025 to $320,000 in 2026.
  • Assessor market value per square footThe current public record shows about $235 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lyons neighborhood and ZIP 60513.
  • Neighborhood value signalAmong 2,811 residential records in the same neighborhood, the average assessor market value is about $217 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +18.6% on average.

Comparable assessments

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

  • 4210 Park Ave, Brookfield, IL 60513
    1,361 sqft | $228/sqft | built 1954 | Similar size (1,361 vs 1,364 sqft); Similar age (1954 vs 1951); Similar lot size (3,240 vs 3,240 sqft)
    $310,000
  • 4220 Park Ave, Brookfield, IL 60513
    1,360 sqft | $221/sqft | built 1948 | Similar size (1,360 vs 1,364 sqft); Similar age (1948 vs 1951); Similar lot size (3,240 vs 3,240 sqft)
    $300,000
  • 4130 Park Ave, Brookfield, IL 60513
    1,394 sqft | $215/sqft | built 1951 | Similar size (1,394 vs 1,364 sqft); Built same year (1951); Similar lot size (3,240 vs 3,240 sqft)
    $300,000
  • 4148 Custer Ave, Brookfield, IL 60513
    1,343 sqft | $164/sqft | built 1951 | Similar size (1,343 vs 1,364 sqft); Built same year (1951); Similar lot size (3,150 vs 3,240 sqft)
    $220,570
  • 4228 Maple Ave, Brookfield, IL 60513
    1,350 sqft | $237/sqft | built 1953 | Similar size (1,350 vs 1,364 sqft); Similar age (1953 vs 1951); Similar lot size (3,300 vs 3,240 sqft)
    $320,010

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 20.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$320,000+$54,440+20.5%
2025$265,560$00.0%
2024$265,560$00.0%
2023$265,560+$60,580+29.6%
2022$204,980$00.0%
2021$204,980+$100.0%
2020$204,970——
6-year total+$115,030+56.1%