Cook County Value

11975 Center Dr Lemont, IL 60439

4 bed / 3 bath, 1,628 sqft, built 1954, in Lemont Assessor market value for 2026: $600,000.

Cook County account 22282050070000

Assessor market value
$600,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,628 sqft
$369 per sqft
Year built
1954
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 $337,850 in 2025 to $600,000 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 $369 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.

  • 11470 Dineff Rd Lemont, IL 60439
    1,659 sqft | $271/sqft | built 1955 | Similar size (1,659 vs 1,628 sqft); Similar age (1955 vs 1954); Lot 12% smaller (29,947 vs 33,875 sqft)
    $450,000
  • 1305 Oak Ave Lemont, IL 60439
    1,652 sqft | $272/sqft | built 1957 | Similar size (1,652 vs 1,628 sqft); Similar age (1957 vs 1954); Lot 14% smaller (29,061 vs 33,875 sqft)
    $450,000
  • 1219 121st St Lemont, IL 60439
    1,424 sqft | $281/sqft | built 1955 | 12% smaller (1,424 vs 1,628 sqft); Similar age (1955 vs 1954); Similar lot size (31,500 vs 33,875 sqft)
    $400,000
  • 11410 Dineff Rd Lemont, IL 60439
    1,436 sqft | $265/sqft | built 1955 | 12% smaller (1,436 vs 1,628 sqft); Similar age (1955 vs 1954); Lot 14% smaller (28,967 vs 33,875 sqft)
    $380,000
  • 11930 Walker Rd Lemont, IL 60439
    1,791 sqft | $251/sqft | built 1958 | 10% larger (1,791 vs 1,628 sqft); Similar age (1958 vs 1954); Lot 15% smaller (28,793 vs 33,875 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 77.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$600,000+$262,150+77.6%
2025$337,850$00.0%
2024$337,850−$16,930−4.8%
2023$354,780+$94,270+36.2%
2022$260,510$00.0%
2021$260,510$00.0%
2020$260,510——
6-year total+$339,490+130.3%