Cook County Value

13527 Oak Ct Lemont, IL 60439

4 bed / 3 bath, 3,701 sqft, built 1987, in Lemont. Assessor market value for 2026: $880,000.

Cook County account 22343060030000

Assessor market value
$880,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,701 sqft
$238 per sqft
Year built
1987
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 37.5% from $639,800 in 2025 to $880,000 in 2026.
  • Assessor market value per square footThe current public record shows about $238 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 2,806 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 +30.4% on average.

Comparable assessments

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

  • 10 Valley View Dr Lemont, IL 60439
    3,675 sqft | $212/sqft | built 1992 | Similar size (3,675 vs 3,701 sqft); Similar age (1992 vs 1987); Similar lot size (51,836 vs 54,667 sqft)
    $780,000
  • 25 Longwood Way Lemont, IL 60439
    3,715 sqft | $253/sqft | built 1997 | Similar size (3,715 vs 3,701 sqft); Similar lot size (50,486 vs 54,667 sqft); Same quality (Average)
    $940,000
  • 12400 Spyglass Ct Lemont, IL 60439
    3,617 sqft | $213/sqft | built 1995 | Similar size (3,617 vs 3,701 sqft); Similar lot size (59,883 vs 54,667 sqft); Same quality (Average)
    $770,000
  • 14159 Hawthorne Dr Lemont, IL 60439
    3,797 sqft | $234/sqft | built 1998 | Similar size (3,797 vs 3,701 sqft); Similar lot size (58,370 vs 54,667 sqft); Same quality (Average)
    $890,000
  • 14625 131st St Lemont, IL 60439
    3,678 sqft | $258/sqft | built 1992 | Similar size (3,678 vs 3,701 sqft); Similar age (1992 vs 1987); Similar lot size (50,094 vs 54,667 sqft)
    $950,000

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: . 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 37.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$880,000+$240,200+37.5%
2025$639,800$00.0%
2024$639,800−$35,540−5.3%
2023$675,340+$188,050+38.6%
2022$487,290−$46,560−8.7%
2021$533,850+$100.0%
2020$533,840——
6-year total+$346,160+64.8%