Cook County Value

414 E Illinois St Lemont, IL 60439

4 bed / 2 bath, 1,677 sqft, built 1870, in Lemont. Assessor market value for 2026: $360,010.

Cook County account 22204280080000

Assessor market value
$360,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,677 sqft
$215 per sqft
Year built
1870
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 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 30.8% from $275,230 in 2025 to $360,010 in 2026.
  • Assessor market value per square footThe current public record shows about $215 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

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

  • 207 Julia St Lemont, IL 60439
    1,616 sqft | $179/sqft | built 1880 | Similar size (1,616 vs 1,677 sqft); Similar lot size (4,650 vs 4,500 sqft); Same quality (Average)
    $290,000
  • 17 Stephen St Lemont, IL 60439
    1,680 sqft | $196/sqft | built 1881 | Similar size (1,680 vs 1,677 sqft); Lot 17% smaller (3,750 vs 4,500 sqft); Same quality (Average)
    $330,000
  • 202 Cass St Lemont, IL 60439
    1,596 sqft | $213/sqft | built 1881 | Similar size (1,596 vs 1,677 sqft); Similar lot size (4,752 vs 4,500 sqft); Same quality (Average)
    $340,000
  • 915 State St Lemont, IL 60439
    1,518 sqft | $191/sqft | built 1871 | 10% smaller (1,518 vs 1,677 sqft); Similar age (1871 vs 1870); Similar lot size (4,559 vs 4,500 sqft)
    $290,000
  • 512 Porter St Lemont, IL 60439
    1,872 sqft | $176/sqft | built 1871 | 12% larger (1,872 vs 1,677 sqft); Similar age (1871 vs 1870); Lot 10% smaller (4,033 vs 4,500 sqft)
    $330,000

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: . 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 30.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$360,010+$84,780+30.8%
2025$275,230−$54,780−16.6%
2024$330,010$00.0%
2023$330,010+$154,150+87.7%
2022$175,860$00.0%
2021$175,860$00.0%
2020$175,860——
6-year total+$184,150+104.7%