Cook County Value

419 Holmes St Lemont, IL 60439

4 bed / 2 bath, 2,655 sqft, built 1924, in Lemont. Assessor market value for 2026: $520,010.

Cook County account 22204370100000

Likely too high

about $39,000

8 similar homes nearby point to a value about $39,000 lower than yours.

Assessor market value$520,010
Similar homes$480,873
$39,137 gap · bars start at $0

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

Assessor market value
$520,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,655 sqft
$196 per sqft
Year built
1924
Average quality

Why we think so

Similar homes' assessments

Strong

6 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $179.93/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 $86,910. Counting your land in place of theirs where theirs is less, they support a value of $480,873.

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 21.2% from $429,090 in 2025 to $520,010 in 2026.
  • Assessor market value per square footThe current public record shows about $196 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.

  • 40 E Custer St Lemont, IL 60439
    2,890 sqft | $180/sqft | built 1914 | 9% larger (2,890 vs 2,655 sqft); Similar lot size (10,420 vs 9,932 sqft); Same quality (Average)
    $520,010
  • 415 Fremont St Lemont, IL 60439
    2,800 sqft | $139/sqft | built 1921 | 6% larger (2,800 vs 2,655 sqft); Similar age (1921 vs 1924); Lot 18% larger (11,748 vs 9,932 sqft)
    $390,010
  • 728 Warner Ave Lemont, IL 60439
    2,392 sqft | $201/sqft | built 1924 | 10% smaller (2,392 vs 2,655 sqft); Built same year (1924); Same quality (Average)
    $480,000
  • 408 Holmes St Lemont, IL 60439
    2,406 sqft | $212/sqft | built 1920 | 9% smaller (2,406 vs 2,655 sqft); Similar age (1920 vs 1924); Same quality (Average)
    $510,000
  • 817 State St 1 Lemont, IL 60439
    2,536 sqft | $92/sqft | built 1920 | Similar size (2,536 vs 2,655 sqft); Similar age (1920 vs 1924); Same quality (Average)
    $232,400

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 21.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$520,010+$90,920+21.2%
2025$429,090−$20,920−4.6%
2024$450,010$00.0%
2023$450,010+$211,770+88.9%
2022$238,240$00.0%
2021$238,240+$200.0%
2020$238,220——
6-year total+$281,790+118.3%