Cook County Value

12126 Oxford Ct Lemont, IL 60439

4 bed / 4 bath, 3,971 sqft, built 2014, in Lemont. Assessor market value for 2026: $1,315,700.

Cook County account 22272070090000

Assessor market value
$1,315,700
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,971 sqft
$331 per sqft
Year built
2014
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 $802,390 in 2025 to $1,315,700 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 $331 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 380 residential records in the same neighborhood, the average assessor market value is about $246 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +25.8% on average.

Comparable assessments

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

  • 16726 Wilshire Ct Lemont, IL 60439
    3,959 sqft | $301/sqft | built 2025 | Similar size (3,959 vs 3,971 sqft); Similar lot size (17,176 vs 18,851 sqft); Same quality (Average)
    $1,190,000
  • 12363 Briarcliffe Dr Lemont, IL 60439
    4,010 sqft | $249/sqft | built 2007 | Similar size (4,010 vs 3,971 sqft); Lot 20% smaller (15,127 vs 18,851 sqft); Same quality (Average)
    $1,000,000
  • 16639 Windsor Ct Lemont, IL 60439
    3,804 sqft | $237/sqft | built 2005 | Similar size (3,804 vs 3,971 sqft); Similar lot size (17,095 vs 18,851 sqft); Same quality (Average)
    $900,000
  • 12137 Oak Tree Ln Lemont, IL 60439
    4,291 sqft | $212/sqft | built 2006 | 8% larger (4,291 vs 3,971 sqft); Similar lot size (18,972 vs 18,851 sqft); Same quality (Average)
    $910,010
  • 12600 Briarcliffe Dr Lemont, IL 60439
    3,964 sqft | $237/sqft | built 2006 | Similar size (3,964 vs 3,971 sqft); Lot 18% smaller (15,443 vs 18,851 sqft); Same quality (Average)
    $940,000

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 64.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,315,700+$513,310+64.0%
2025$802,390−$2200.0%
2024$802,610−$107,390−11.8%
2023$910,000+$278,220+44.0%
2022$631,780$00.0%
2021$631,780−$124,300−16.4%
2020$756,080——
6-year total+$559,620+74.0%