Cook County Value

824 Portsmouth Ave Westchester, IL 60154

3 bed / 1 bath, 1,491 sqft, built 1943, in Proviso. Assessor market value for 2026: $300,000.

Cook County account 15163130340000

Assessor market value
$300,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,491 sqft
$201 per sqft
Year built
1943
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 60154 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 33.0% from $225,610 in 2025 to $300,000 in 2026.
  • Assessor market value per square footThe current public record shows about $201 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 60154.
  • Neighborhood value signalAmong 849 residential records in the same neighborhood, the average assessor market value is about $235 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +22.8% on average.

Comparable assessments

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

  • 615 Norfolk Ave Westchester, IL 60154
    1,464 sqft | $191/sqft | built 1943 | Similar size (1,464 vs 1,491 sqft); Built same year (1943); Similar lot size (5,040 vs 4,969 sqft)
    $280,000
  • 810 Gardner Rd Westchester, IL 60154
    1,442 sqft | $187/sqft | built 1943 | Similar size (1,442 vs 1,491 sqft); Built same year (1943); Similar lot size (4,920 vs 4,969 sqft)
    $270,000
  • 800 Hull Ave Westchester, IL 60154
    1,484 sqft | $202/sqft | built 1942 | Similar size (1,484 vs 1,491 sqft); Similar age (1942 vs 1943); Similar lot size (4,840 vs 4,969 sqft)
    $300,000
  • 754 Hull Ave Westchester, IL 60154
    1,506 sqft | $219/sqft | built 1943 | Similar size (1,506 vs 1,491 sqft); Built same year (1943); Similar lot size (4,840 vs 4,969 sqft)
    $330,000
  • 721 Portsmouth Ave Westchester, IL 60154
    1,462 sqft | $205/sqft | built 1943 | Similar size (1,462 vs 1,491 sqft); Built same year (1943); Similar lot size (5,080 vs 4,969 sqft)
    $300,000

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 33.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$300,000+$74,390+33.0%
2025$225,610$00.0%
2024$225,610$00.0%
2023$225,610+$51,840+29.8%
2022$173,770$00.0%
2021$173,770+$100.0%
2020$173,760——
6-year total+$126,240+72.7%