Cook County Value

12470 Briarcliffe Dr Lemont, IL 60439

4 bed / 4 bath, 4,766 sqft, built 2011, in Lemont. Assessor market value for 2026: $1,325,000.

Cook County account 22303060170000

Assessor market value
$1,325,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,766 sqft
$278 per sqft
Year built
2011
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 43.2% from $925,000 in 2025 to $1,325,000 in 2026.
  • Assessor market value per square footThe current public record shows about $278 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.

  • 12323 Briarcliffe Dr Lemont, IL 60439
    4,709 sqft | $225/sqft | built 2005 | Similar size (4,709 vs 4,766 sqft); Similar lot size (14,485 vs 14,934 sqft); Same quality (Average)
    $1,060,000
  • 16738 Wilshire Ct Lemont, IL 60439
    4,704 sqft | $251/sqft | built 2016 | Similar size (4,704 vs 4,766 sqft); Similar age (2016 vs 2011); Similar lot size (16,363 vs 14,934 sqft)
    $1,180,000
  • 12473 Briarcliffe Dr Lemont, IL 60439
    4,641 sqft | $220/sqft | built 2005 | Similar size (4,641 vs 4,766 sqft); Similar lot size (13,956 vs 14,934 sqft); Same quality (Average)
    $1,020,010
  • 12166 Oxford Ct Lemont, IL 60439
    4,813 sqft | $229/sqft | built 2010 | Similar size (4,813 vs 4,766 sqft); Similar age (2010 vs 2011); Lot 15% smaller (12,762 vs 14,934 sqft)
    $1,100,000
  • 12444 Thornberry Dr Lemont, IL 60439
    4,439 sqft | $234/sqft | built 2009 | 7% smaller (4,439 vs 4,766 sqft); Similar age (2009 vs 2011); Similar lot size (14,058 vs 14,934 sqft)
    $1,040,000

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 43.2% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,325,000+$400,000+43.2%
2025$925,000+$75,000+8.8%
2024$850,000$00.0%
2023$850,000+$138,120+19.4%
2022$711,880$00.0%
2021$711,880−$39,020−5.2%
2020$750,900——
6-year total+$574,100+76.5%