Cook County Value

12201 Walker Rd Lemont, IL 60439

3 bed / 2 bath, 2,083 sqft, built 2021, in Lemont. Assessor market value for 2026: $680,000.

Cook County account 22271000990000

Assessor market value
$680,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,083 sqft
$326 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 changed from $419,990 in 2025 to $680,000 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 $326 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 636 residential records in the same neighborhood, the average assessor market value is about $286 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +33.3% on average.

Comparable assessments

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

  • 12203 Walker Rd Lemont, IL 60439
    2,273 sqft | $304/sqft | built 2011 | 9% larger (2,273 vs 2,083 sqft); Similar lot size (19,484 vs 19,465 sqft); Same quality (Average)
    $690,010
  • 11979 Walker Rd Lemont, IL 60439
    2,340 sqft | $303/sqft | built 2013 | 12% larger (2,340 vs 2,083 sqft); Lot 17% larger (22,687 vs 19,465 sqft); Same quality (Average)
    $710,000
  • 111 Apple Ave Lemont, IL 60439
    2,219 sqft | $279/sqft | built 2007 | 6% larger (2,219 vs 2,083 sqft); Same quality (Average); Same neighborhood
    $620,000
  • 1023 Walter St Lemont, IL 60439
    2,616 sqft | $140/sqft | built 2026 | Similar age (2026 vs 2021); Same quality (Average); Same neighborhood
    $365,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 12420 Lacey Dr Lemont, IL 60439
    2,100 sqft | $269/sqft | built 2019 | Similar size (2,100 sqft); Similar age (2019); Same beds (3)
    $565,000
  • 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; Same beds (3)
    $710,150

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 61.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$680,000+$260,010+61.9%
2025$419,990−$56,630−11.9%
2024$476,620−$78,380−14.1%
2023$555,000−$40,830−6.9%
2022$595,830+$346,960+139.4%
2021$248,870+$141,820+132.5%
2020$107,050——
6-year total+$572,950+535.2%