Cook County Value

12751 Archer Ave Lemont, IL 60439

4 bed / 2 bath, 2,710 sqft, built 1999, in Lemont. Assessor market value for 2026: $730,000.

Cook County account 22332010200000

Assessor market value
$730,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,710 sqft
$269 per sqft
Year built
1999
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 22.6% from $595,510 in 2025 to $730,000 in 2026.
  • Assessor market value per square footThe current public record shows about $269 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.

  • 8 Woodland Dr Lemont, IL 60439
    2,694 sqft | $312/sqft | built 2001 | Similar size (2,694 vs 2,710 sqft); Similar age (2001 vs 1999); Similar lot size (44,953 vs 47,001 sqft)
    $840,000
  • 12228 Saddlebrook Ln Lemont, IL 60439
    2,679 sqft | $261/sqft | built 1998 | Similar size (2,679 vs 2,710 sqft); Similar age (1998 vs 1999); Similar lot size (47,916 vs 47,001 sqft)
    $700,000
  • 1322 Gordon Ln Lemont, IL 60439
    2,738 sqft | $259/sqft | built 1998 | Similar size (2,738 vs 2,710 sqft); Similar age (1998 vs 1999); Similar lot size (44,126 vs 47,001 sqft)
    $710,000
  • 12471 Spyglass Ct Lemont, IL 60439
    2,691 sqft | $286/sqft | built 2001 | Similar size (2,691 vs 2,710 sqft); Similar age (2001 vs 1999); Similar lot size (43,560 vs 47,001 sqft)
    $770,000
  • 13310 Derby Rd Lemont, IL 60439
    2,729 sqft | $282/sqft | built 1993 | Similar size (2,729 vs 2,710 sqft); Similar lot size (43,560 vs 47,001 sqft); Same quality (Average)
    $770,000

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 22.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$730,000+$134,490+22.6%
2025$595,510$00.0%
2024$595,510$00.0%
2023$595,510+$180,710+43.6%
2022$414,800$00.0%
2021$414,800$00.0%
2020$414,800——
6-year total+$315,200+76.0%