Cook County Value

13445 Maple Ave Lemont, IL 60439

4 bed / 2 bath, 2,723 sqft, built 1969, in Lemont Assessor market value for 2026: $720,000.

Cook County account 22334050060000

Assessor market value
$720,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,723 sqft
$264 per sqft
Year built
1969
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 changed from $429,010 in 2025 to $720,000 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 $264 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 278 residential records in the same neighborhood, the average assessor market value is about $298 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +39.8% on average.

Comparable assessments

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

  • 15801 132nd St Lemont, IL 60439
    2,652 sqft | $245/sqft | built 1978 | Similar size (2,652 vs 2,723 sqft); Similar lot size (99,752 vs 94,525 sqft); Same quality (Average)
    $650,000
  • 13140 Maple Ave Lemont, IL 60439
    2,636 sqft | $262/sqft | built 1963 | Similar size (2,636 vs 2,723 sqft); Lot 11% smaller (84,070 vs 94,525 sqft); Same quality (Average)
    $690,000
  • 13465 Maple Ave Lemont, IL 60439
    2,961 sqft | $260/sqft | built 1972 | 9% larger (2,961 vs 2,723 sqft); Similar age (1972 vs 1969); Similar lot size (94,525 vs 94,525 sqft)
    $770,000
  • 15819 132nd St Lemont, IL 60439
    2,435 sqft | $271/sqft | built 1974 | 11% smaller (2,435 vs 2,723 sqft); Similar age (1974 vs 1969); Similar lot size (99,752 vs 94,525 sqft)
    $660,000
  • 13205 Archer Ave Lemont, IL 60439
    2,818 sqft | $256/sqft | built 1963 | Similar size (2,818 vs 2,723 sqft); Same quality (Average); Same neighborhood
    $720,000

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 67.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$720,000+$290,990+67.8%
2025$429,010$00.0%
2024$429,010−$70,990−14.2%
2023$500,000+$74,150+17.4%
2022$425,850$00.0%
2021$425,850+$200.0%
2020$425,830——
6-year total+$294,170+69.1%