Cook County Value

506 Senon Dr Lemont, IL 60439

4 bed / 2 bath, 2,683 sqft, built 1999, in Lemont. Assessor market value for 2026: $770,800.

Cook County account 22213110070000

Assessor market value
$770,800
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,683 sqft
$287 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 37.1% from $562,300 in 2025 to $770,800 in 2026.
  • Assessor market value per square footThe current public record shows about $287 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.

  • 488 Carriage Ridge Ln Lemont, IL 60439
    2,692 sqft | $241/sqft | built 1999 | Similar size (2,692 vs 2,683 sqft); Built same year (1999); Similar lot size (10,480 vs 10,285 sqft)
    $650,000
  • 12997 Sunrise Dr Lemont, IL 60439
    2,674 sqft | $254/sqft | built 2001 | Similar size (2,674 vs 2,683 sqft); Similar age (2001 vs 1999); Similar lot size (10,400 vs 10,285 sqft)
    $680,000
  • 16457 Harvest Dr Lemont, IL 60439
    2,715 sqft | $247/sqft | built 2000 | Similar size (2,715 vs 2,683 sqft); Similar age (2000 vs 1999); Similar lot size (10,400 vs 10,285 sqft)
    $670,000
  • 430 S Kromray Rd Lemont, IL 60439
    2,695 sqft | $245/sqft | built 1996 | Similar size (2,695 vs 2,683 sqft); Similar age (1996 vs 1999); Similar lot size (10,500 vs 10,285 sqft)
    $660,010
  • 42 W Wend St Lemont, IL 60439
    2,662 sqft | $240/sqft | built 1996 | Similar size (2,662 vs 2,683 sqft); Similar age (1996 vs 1999); Similar lot size (10,458 vs 10,285 sqft)
    $640,000

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 37.1% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$770,800+$208,500+37.1%
2025$562,300+$60,800+12.1%
2024$501,500−$58,500−10.4%
2023$560,000+$180,780+47.7%
2022$379,220$00.0%
2021$379,220−$28,290−6.9%
2020$407,510——
6-year total+$363,290+89.1%