Cook County Value

12325 Spyglass Ct Lemont, IL 60439

4 bed / 1 bath, 3,213 sqft, built 2000, in Lemont. Assessor market value for 2026: $840,000.

Cook County account 22274010440000

Assessor market value
$840,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,213 sqft
$261 per sqft
Year built
2000
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 33.3% from $630,000 in 2025 to $840,000 in 2026.
  • Assessor market value per square footThe current public record shows about $261 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

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

  • 12801 Marble St Lemont, IL 60439
    3,244 sqft | $256/sqft | built 1996 | Similar size (3,244 vs 3,213 sqft); Similar age (1996 vs 2000); Similar lot size (39,977 vs 43,563 sqft)
    $830,000
  • 5 Valley View Dr Lemont, IL 60439
    3,195 sqft | $260/sqft | built 2000 | Similar size (3,195 vs 3,213 sqft); Built same year (2000); Lot 11% larger (48,482 vs 43,563 sqft)
    $830,000
  • 13212 Red Dr Lemont, IL 60439
    3,185 sqft | $274/sqft | built 1990 | Similar size (3,185 vs 3,213 sqft); Similar lot size (40,293 vs 43,563 sqft); Same quality (Average)
    $872,710
  • 13172 Briar Patch Ln Lemont, IL 60439
    3,216 sqft | $295/sqft | built 1996 | Similar size (3,216 vs 3,213 sqft); Similar age (1996 vs 2000); Lot 19% smaller (35,327 vs 43,563 sqft)
    $949,110
  • 26 Emily Ln Lemont, IL 60439
    3,192 sqft | $226/sqft | built 1991 | Similar size (3,192 vs 3,213 sqft); Similar lot size (41,172 vs 43,563 sqft); Same quality (Average)
    $720,000

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 33.3% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$840,000+$210,000+33.3%
2025$630,000$00.0%
2024$630,000$00.0%
2023$630,000+$235,930+59.9%
2022$394,070−$34,700−8.1%
2021$428,770−$43,910−9.3%
2020$472,680——
6-year total+$367,320+77.7%