Cook County Value

11261 Archer Ave Lemont, IL 60439

3 bed / 2 bath, 1,709 sqft, built 1973, in Lemont Assessor market value for 2026: $552,000.

Cook County account 22232040020000

Assessor market value
$552,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,709 sqft
$323 per sqft
Year built
1973
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 30.9% from $421,670 in 2025 to $552,000 in 2026.
  • Assessor market value per square footThe current public record shows about $323 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.

  • 12001 Pine Ct Lemont, IL 60439
    1,726 sqft | $362/sqft | built 1974 | Similar size (1,726 vs 1,709 sqft); Similar age (1974 vs 1973); Lot 13% smaller (30,862 vs 35,429 sqft)
    $624,800
  • 11299 Bell Rd Lemont, IL 60439
    1,727 sqft | $261/sqft | built 1967 | Similar size (1,727 vs 1,709 sqft); Lot 15% smaller (29,969 vs 35,429 sqft); Same quality (Average)
    $450,000
  • 11370 Dineff Rd Lemont, IL 60439
    1,716 sqft | $268/sqft | built 1978 | Similar size (1,716 vs 1,709 sqft); Similar age (1978 vs 1973); Lot 18% smaller (28,967 vs 35,429 sqft)
    $460,000
  • 11251 Archer Ave Lemont, IL 60439
    1,533 sqft | $287/sqft | built 1977 | 10% smaller (1,533 vs 1,709 sqft); Similar age (1977 vs 1973); Similar lot size (37,341 vs 35,429 sqft)
    $440,000
  • 11181 Bell Rd Lemont, IL 60439
    1,647 sqft | $273/sqft | built 1978 | Similar size (1,647 vs 1,709 sqft); Similar age (1978 vs 1973); Lot 14% larger (40,464 vs 35,429 sqft)
    $450,000

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 30.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$552,000+$130,330+30.9%
2025$421,670+$72,000+20.6%
2024$349,670−$29,050−7.7%
2023$378,720+$105,490+38.6%
2022$273,230$00.0%
2021$273,230+$100.0%
2020$273,220——
6-year total+$278,780+102.0%