Cook County Value

3101 Oak Ave, Brookfield, IL 60513

4 bed / 2 bath, 1,506 sqft, built 1923, in Proviso. Assessor market value for 2026: $380,000.

Cook County account 15342030010000

Assessor market value
$380,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,506 sqft
$252 per sqft
Year built
1923
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 Proviso assessment pages.

Local guide: Proviso Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Proviso, appeals to the Assessor are open through (8 days left).

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 31.0% from $290,000 in 2025 to $380,000 in 2026.
  • Assessor market value per square footThe current public record shows about $252 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Proviso neighborhood and ZIP 60513.
  • Neighborhood value signalAmong 757 residential records in the same neighborhood, the average assessor market value is about $277 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +33.3% on average.

Comparable assessments

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

  • 3111 Elm Ave, Brookfield, IL 60513
    1,380 sqft | $261/sqft | built 1924 | 8% smaller (1,380 vs 1,506 sqft); Similar age (1924 vs 1923); Similar lot size (5,670 vs 5,656 sqft)
    $360,010
  • 3115 Oak Ave, Brookfield, IL 60513
    1,447 sqft | $221/sqft | built 1921 | Similar size (1,447 vs 1,506 sqft); Similar age (1921 vs 1923); Similar lot size (5,670 vs 5,656 sqft)
    $320,010
  • 3123 Vernon Ave, Brookfield, IL 60513
    1,393 sqft | $258/sqft | built 1925 | 8% smaller (1,393 vs 1,506 sqft); Similar age (1925 vs 1923); Similar lot size (5,670 vs 5,656 sqft)
    $360,010
  • 3319 Prairie Ave, Brookfield, IL 60513
    1,471 sqft | $279/sqft | built 1926 | Similar size (1,471 vs 1,506 sqft); Similar age (1926 vs 1923); Lot 11% larger (6,300 vs 5,656 sqft)
    $410,000
  • 3243 Prairie Ave, Brookfield, IL 60513
    1,494 sqft | $261/sqft | built 1929 | Similar size (1,494 vs 1,506 sqft); Lot 11% larger (6,300 vs 5,656 sqft); Same quality (Average)
    $390,000

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

Up 31.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$380,000+$90,000+31.0%
2025$290,000$00.0%
2024$290,000$00.0%
2023$290,000+$32,720+12.7%
2022$257,280$00.0%
2021$257,280+$100.0%
2020$257,270——
6-year total+$122,730+47.7%