Cook County Value

12952 Fairmont Ln Lemont, IL 60439

4 bed / 4 bath, 3,183 sqft, built 2021, in Lemont. Assessor market value for 2026: $910,000.

Cook County account 22262050190000

Assessor market value
$910,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,183 sqft
$286 per sqft
Year built
2021
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 23.0% from $740,000 in 2025 to $910,000 in 2026.
  • Assessor market value per square footThe current public record shows about $286 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

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

  • 13109 Kettering Way Lemont, IL 60439
    3,172 sqft | $265/sqft | built 2021 | Similar size (3,172 vs 3,183 sqft); Built same year (2021); Similar lot size (12,687 vs 12,701 sqft)
    $840,000
  • 12960 Belmont Pky Lemont, IL 60439
    3,127 sqft | $294/sqft | built 2019 | Similar size (3,127 vs 3,183 sqft); Similar age (2019 vs 2021); Similar lot size (12,672 vs 12,701 sqft)
    $920,000
  • 13650 Buchanan Dr Lemont, IL 60439
    3,172 sqft | $255/sqft | built 2021 | Similar size (3,172 vs 3,183 sqft); Built same year (2021); Similar lot size (12,196 vs 12,701 sqft)
    $810,000
  • 13068 Dunmoor Dr Lemont, IL 60439
    3,205 sqft | $268/sqft | built 2018 | Similar size (3,205 vs 3,183 sqft); Similar age (2018 vs 2021); Similar lot size (12,804 vs 12,701 sqft)
    $860,000
  • 13661 Amelia Dr Lemont, IL 60439
    3,172 sqft | $246/sqft | built 2021 | Similar size (3,172 vs 3,183 sqft); Built same year (2021); Similar lot size (12,156 vs 12,701 sqft)
    $780,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 12554 Eileen St Lemont, IL 60439
    June-29-2026 | 3,421 sqft | $272/sqft | built 2025 | 8% size difference (3,421 sqft); Moderate age difference (4 years newer); Sold after the valuation date
    $930,895
  • 12655 Derry Dr Lemont, IL 60439
    June-29-2026 | 2,672 sqft | $266/sqft | built 2025 | Moderate age difference (4 years newer); Sold after the valuation date; Within 1 bedroom (3 vs 4)
    $710,150
  • 1217 Woburn Dr Lemont, IL 60439
    2,576 sqft | $318/sqft | built 2016 | Moderate age difference (5 years older); Same beds (4)
    $819,000

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 23.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$910,000+$170,000+23.0%
2025$740,000$00.0%
2024$740,000$00.0%
2023$740,000−$25,350−3.3%
2022$765,350+$434,080+131.0%
2021$331,270+$251,890+317.3%
2020$79,380——
6-year total+$830,620+1046.4%