Cook County Value

210 Main St Lemont, IL 60439

2 bed / 2 bath, 2,392 sqft, built 1883, in Lemont. Assessor market value for 2026: $187,520.

Cook County account 22203120050000

In line with similar homes

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

Assessor market value$187,520
Similar homes$339,161
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
$187,520
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,392 sqft
$78 per sqft
Year built
1883
Average quality

What we found

Similar homes' assessments

Weak

1 of 8 similar homes is assessed lower per square foot. Their similarity-weighted median is $141.79/sqft, which supports a value of $339,161.

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 changed from $107,330 in 2025 to $187,520 in 2026. A change this large often reflects new construction, a reclassification or a record correction, so check it against the county record.
  • Assessor market value per square footThe current public record shows about $78 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.

  • 236 Illinois St Lemont, IL 60439
    2,595 sqft | $86/sqft | built 1886 | 8% larger (2,595 vs 2,392 sqft); Similar age (1886 vs 1883); Similar lot size (2,640 vs 2,860 sqft)
    $223,390
  • 9 Povalish Ct Lemont, IL 60439
    2,225 sqft | $41/sqft | built 1883 | 7% smaller (2,225 vs 2,392 sqft); Built same year (1883); Same quality (Average)
    $91,620
  • 408 Porter St Lemont, IL 60439
    1,976 sqft | $202/sqft | built 1882 | Similar age (1882 vs 1883); Similar lot size (2,625 vs 2,860 sqft); Same quality (Average)
    $400,000
  • 118 Stephen St Lemont, IL 60439
    2,827 sqft | $145/sqft | built 1876 | Lot 14% larger (3,250 vs 2,860 sqft); Same quality (Average); Same neighborhood
    $410,000
  • 311 Canal St Lemont, IL 60439
    2,680 sqft | $142/sqft | built 1879 | 12% larger (2,680 vs 2,392 sqft); Similar age (1879 vs 1883); Same quality (Average)
    $380,000

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 74.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$187,520+$80,190+74.7%
2025$107,330−$242,680−69.3%
2024$350,010$00.0%
2023$350,010+$125,030+55.6%
2022$224,980$00.0%
2021$224,980+$100.0%
2020$224,970——
6-year total−$37,450−16.6%