Cook County Value

11401 S Avon Ave, Alsip, IL 60803

3 bed / 1 bath, 912 sqft, built 1954, in Worth. Assessor market value for 2026: $250,000.

Cook County account 24212070020000

Assessor market value
$250,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
912 sqft
$274 per sqft
Year built
1954
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 60803, Worth, and Oak Lawn assessment pages.

Local guide: Worth Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Worth, appeals to the Assessor closed . Board of Review dates for Worth 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 24.9% from $200,100 in 2025 to $250,000 in 2026.
  • Assessor market value per square footThe current public record shows about $274 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Worth neighborhood and ZIP 60803.
  • Neighborhood value signalAmong 698 residential records in the same neighborhood, the average assessor market value is about $218 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +29.9% on average.

Comparable assessments

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

  • 11439 Mather Ave, Alsip, IL 60803
    921 sqft | $271/sqft | built 1953 | Similar size (921 vs 912 sqft); Similar age (1953 vs 1954); Similar lot size (25,000 vs 24,900 sqft)
    $250,000
  • 11240 S Avon Ave, Alsip, IL 60803
    880 sqft | $250/sqft | built 1953 | Similar size (880 vs 912 sqft); Similar age (1953 vs 1954); Similar lot size (25,000 vs 24,900 sqft)
    $220,000
  • 11640 S Lavergne Ave, Alsip, IL 60803
    900 sqft | $256/sqft | built 1957 | Similar size (900 vs 912 sqft); Similar age (1957 vs 1954); Lot 14% smaller (21,440 vs 24,900 sqft)
    $230,000
  • 12040 S Lawler Ave, Alsip, IL 60803
    912 sqft | $241/sqft | built 1951 | Similar size (912 vs 912 sqft); Similar age (1951 vs 1954); Same quality (Average)
    $220,000
  • 11330 S Lawler Ave, Alsip, IL 60803
    960 sqft | $250/sqft | built 1955 | 5% larger (960 vs 912 sqft); Similar age (1955 vs 1954); Lot 18% smaller (20,300 vs 24,900 sqft)
    $240,010

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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 24.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$250,000+$49,900+24.9%
2025$200,100$00.0%
2024$200,100−$49,300−19.8%
2023$249,400+$107,850+76.2%
2022$141,550$00.0%
2021$141,550+$100.0%
2020$141,540——
6-year total+$108,460+76.6%