Cook County Value

518 Senon Dr Lemont, IL 60439

4 bed / 2 bath, 2,385 sqft, built 2001, in Lemont. Assessor market value for 2026: $690,000.

Cook County account 22213110260000

Assessor market value
$690,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,385 sqft
$289 per sqft
Year built
2001
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 32.9% from $519,130 in 2025 to $690,000 in 2026.
  • Assessor market value per square footThe current public record shows about $289 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.

  • 10 Jaymia Ct Lemont, IL 60439
    2,379 sqft | $273/sqft | built 2001 | Similar size (2,379 vs 2,385 sqft); Built same year (2001); Similar lot size (13,057 vs 14,075 sqft)
    $650,000
  • 8 Mirta Cir Lemont, IL 60439
    2,373 sqft | $278/sqft | built 1996 | Similar size (2,373 vs 2,385 sqft); Similar age (1996 vs 2001); Similar lot size (15,246 vs 14,075 sqft)
    $660,000
  • 1014 Stirrup Ln Lemont, IL 60439
    2,416 sqft | $269/sqft | built 1997 | Similar size (2,416 vs 2,385 sqft); Similar age (1997 vs 2001); Similar lot size (14,929 vs 14,075 sqft)
    $650,000
  • 1 Stirrup Ct Lemont, IL 60439
    2,433 sqft | $279/sqft | built 1998 | Similar size (2,433 vs 2,385 sqft); Similar age (1998 vs 2001); Similar lot size (12,723 vs 14,075 sqft)
    $680,000
  • 12991 Mayfair Dr Lemont, IL 60439
    2,382 sqft | $285/sqft | built 2004 | Similar size (2,382 vs 2,385 sqft); Similar age (2004 vs 2001); Lot 10% larger (15,500 vs 14,075 sqft)
    $680,010

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 32.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$690,000+$170,870+32.9%
2025$519,130−$25,510−4.7%
2024$544,640−$45,360−7.7%
2023$590,000+$205,260+53.4%
2022$384,740$00.0%
2021$384,740$00.0%
2020$384,740——
6-year total+$305,260+79.3%