Cook County Value

4021 Vernon Ave, Brookfield, IL 60513

6 bed / 2 bath, 2,650 sqft, built 1922, in Lyons. Assessor market value for 2026: $420,000.

Cook County account 18032120080000

Assessor market value
$420,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,650 sqft
$158 per sqft
Year built
1922
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 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 16.7% from $360,000 in 2025 to $420,000 in 2026.
  • Assessor market value per square footThe current public record shows about $158 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

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

  • 4015 Vernon Ave, Brookfield, IL 60513
    2,453 sqft | $163/sqft | built 1922 | 7% smaller (2,453 vs 2,650 sqft); Built same year (1922); Similar lot size (5,338 vs 5,338 sqft)
    $400,000
  • 4156 Dubois Ave, Brookfield, IL 60513
    2,458 sqft | $195/sqft | built 1924 | 7% smaller (2,458 vs 2,650 sqft); Similar age (1924 vs 1922); Similar lot size (5,355 vs 5,338 sqft)
    $480,000
  • 9514 47th St, Brookfield, IL 60513
    2,800 sqft | $157/sqft | built 1931 | 6% larger (2,800 vs 2,650 sqft); Similar lot size (5,808 vs 5,338 sqft); Same quality (Average)
    $440,000
  • 4026 Oak Ave, Brookfield, IL 60513
    2,572 sqft | $156/sqft | built 1927 | Similar size (2,572 vs 2,650 sqft); Similar age (1927 vs 1922); Lot 11% smaller (4,725 vs 5,338 sqft)
    $400,000
  • 3919 Vernon Ave, Brookfield, IL 60513
    2,301 sqft | $165/sqft | built 1920 | 13% smaller (2,301 vs 2,650 sqft); Similar age (1920 vs 1922); Similar lot size (5,416 vs 5,338 sqft)
    $380,000

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: . Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 16.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$420,000+$60,000+16.7%
2025$360,000$00.0%
2024$360,000$00.0%
2023$360,000+$147,320+69.3%
2022$212,680$00.0%
2021$212,680+$100.0%
2020$212,670——
6-year total+$207,330+97.5%