Cook County Value

39 Cass St Lemont, IL 60439

2 bed / 1 bath, 1,049 sqft, built 1969, in Lemont. Assessor market value for 2026: $320,000.

Cook County account 22203130110000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$320,000
Similar homes$320,301
No gap: similar homes are at or above the county value · bars start at $0

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

Assessor market value
$320,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,049 sqft
$305 per sqft
Year built
1969
Average quality

What we found

Similar homes' assessments

Weak

5 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $304.18/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $74,500. Counting your land in place of theirs where theirs is less, they support a value of $320,301.

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 60439 and Lemont assessment pages.

Local guide: Lemont Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lemont, appeals to the Assessor closed . Board of Review dates for Lemont 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 20.2% from $266,260 in 2025 to $320,000 in 2026.
  • Assessor market value per square footThe current public record shows about $305 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lemont neighborhood and ZIP 60439.
  • Neighborhood value signalAmong 1,277 residential records in the same neighborhood, the average assessor market value is about $255 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +25.5% on average.

Comparable assessments

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

  • 209 Short St Lemont, IL 60439
    1,052 sqft | $304/sqft | built 1968 | Similar size (1,052 vs 1,049 sqft); Similar age (1968 vs 1969); Similar lot size (8,400 vs 8,514 sqft)
    $320,000
  • 819 Warner Ave Lemont, IL 60439
    1,065 sqft | $338/sqft | built 1970 | Similar size (1,065 vs 1,049 sqft); Similar age (1970 vs 1969); Similar lot size (8,520 vs 8,514 sqft)
    $360,000
  • 409 Holmes St Lemont, IL 60439
    1,040 sqft | $317/sqft | built 1972 | Similar size (1,040 vs 1,049 sqft); Similar age (1972 vs 1969); Similar lot size (8,250 vs 8,514 sqft)
    $330,000
  • 312 Lintz St Lemont, IL 60439
    1,099 sqft | $273/sqft | built 1965 | Similar size (1,099 vs 1,049 sqft); Similar age (1965 vs 1969); Similar lot size (8,650 vs 8,514 sqft)
    $300,000
  • 16 Norton Ave Lemont, IL 60439
    1,047 sqft | $277/sqft | built 1961 | Similar size (1,047 vs 1,049 sqft); Similar lot size (8,000 vs 8,514 sqft); Same quality (Average)
    $290,000

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 20.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$320,000+$53,740+20.2%
2025$266,260$00.0%
2024$266,260−$11,260−4.1%
2023$277,520+$62,460+29.0%
2022$215,060$00.0%
2021$215,060+$100.0%
2020$215,050——
6-year total+$104,950+48.8%