Cook County Value

9635 S Mansfield Ave, Oak Lawn, IL 60453

3 bed / 1 bath, 1,089 sqft, built 1951, in Worth. Assessor market value for 2026: $280,000.

Cook County account 24082080200000

Likely too high

about $40,000

8 similar homes nearby point to a value about $40,000 lower than yours.

Assessor market value$280,000
Similar homes$240,222
$39,778 gap · bars start at $0

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

Assessor market value
$280,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,089 sqft
$257 per sqft
Year built
1951
Average quality

Why we think so

Similar homes' assessments

Strong

5 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $220.59/sqft, which supports a value of $240,222.

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 60453, 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 21.7% from $230,000 in 2025 to $280,000 in 2026.
  • Assessor market value per square footThe current public record shows about $257 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 60453.
  • Neighborhood value signalAmong 2,508 residential records in the same neighborhood, the average assessor market value is about $221 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +20.1% on average.

Comparable assessments

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

  • 6749 W 88th Pl, Oak Lawn, IL 60453
    1,090 sqft | $220/sqft | built 1954 | Similar size (1,090 vs 1,089 sqft); Similar age (1954 vs 1951); Similar lot size (10,010 vs 9,339 sqft)
    $240,000
  • 6716 W 88th St, Oak Lawn, IL 60453
    1,088 sqft | $221/sqft | built 1954 | Similar size (1,088 vs 1,089 sqft); Similar age (1954 vs 1951); Similar lot size (10,010 vs 9,339 sqft)
    $240,000
  • 9112 S Lynwood Dr, Oak Lawn, IL 60453
    1,077 sqft | $279/sqft | built 1949 | Similar size (1,077 vs 1,089 sqft); Similar age (1949 vs 1951); Similar lot size (9,600 vs 9,339 sqft)
    $300,000
  • 8716 S Moody Ave, Oak Lawn, IL 60453
    1,104 sqft | $217/sqft | built 1952 | Similar size (1,104 vs 1,089 sqft); Similar age (1952 vs 1951); Similar lot size (10,011 vs 9,339 sqft)
    $240,000
  • 6749 W 87th Pl, Oak Lawn, IL 60453
    1,092 sqft | $256/sqft | built 1957 | Similar size (1,092 vs 1,089 sqft); Similar lot size (10,010 vs 9,339 sqft); Same quality (Average)
    $280,000

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 21.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$280,000+$50,000+21.7%
2025$230,000$00.0%
2024$230,000$00.0%
2023$230,000+$45,930+25.0%
2022$184,070$00.0%
2021$184,070+$100.0%
2020$184,060——
6-year total+$95,940+52.1%