Cook County Value

6645 Dawn Ave Countryside, IL 60525

4 bed / 2 bath, 2,719 sqft, built 1989, in Lyons. Assessor market value for 2026: $700,000.

Cook County account 18202030160000

Assessor market value
$700,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,719 sqft
$257 per sqft
Year built
1989
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 60525 and Lyons assessment pages.

Local guide: Lyons Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lyons, appeals to the Assessor closed . Board of Review dates for Lyons 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 $436,360 in 2025 to $700,000 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 $257 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lyons neighborhood and ZIP 60525.
  • Neighborhood value signalAmong 319 residential records in the same neighborhood, the average assessor market value is about $292 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +34.0% on average.

Comparable assessments

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

  • 6640 Dawn Ave Countryside, IL 60525
    2,656 sqft | $267/sqft | built 1989 | Similar size (2,656 vs 2,719 sqft); Built same year (1989); Similar lot size (20,000 vs 20,274 sqft)
    $710,000
  • 10765 67th St Countryside, IL 60525
    2,929 sqft | $273/sqft | built 1992 | 8% larger (2,929 vs 2,719 sqft); Similar age (1992 vs 1989); Similar lot size (20,000 vs 20,274 sqft)
    $800,000
  • 10730 67th St Countryside, IL 60525
    2,654 sqft | $260/sqft | built 1986 | Similar size (2,654 vs 2,719 sqft); Similar age (1986 vs 1989); Similar lot size (21,710 vs 20,274 sqft)
    $690,000
  • 6746 Lorraine Dr Countryside, IL 60525
    3,010 sqft | $252/sqft | built 1990 | 11% larger (3,010 vs 2,719 sqft); Similar age (1990 vs 1989); Similar lot size (20,000 vs 20,274 sqft)
    $760,000
  • 10745 Hillsdale Rd Countryside, IL 60525
    2,896 sqft | $304/sqft | built 1998 | 6% larger (2,896 vs 2,719 sqft); Similar lot size (20,000 vs 20,274 sqft); Same quality (Average)
    $880,000

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 60.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$700,000+$263,640+60.4%
2025$436,360−$68,880−13.6%
2024$505,240$00.0%
2023$505,240+$50,170+11.0%
2022$455,070$00.0%
2021$455,070+$100.0%
2020$455,060——
6-year total+$244,940+53.8%