Cook County Value

6312 Byron St Rosemont, IL 60018

3 bed / 1 bath, 1,706 sqft, built 1962, in Leyden. Assessor market value for 2026: $460,000.

Cook County account 12042010440000

Assessor market value
$460,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,706 sqft
$270 per sqft
Year built
1962
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 60018 and Leyden assessment pages.

Local guide: Leyden Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Leyden, appeals to the Assessor closed . Board of Review dates for Leyden 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 stayed about the same, from $460,000 in 2025 to $460,000 in 2026.
  • Assessor market value per square footThe current public record shows about $270 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Leyden neighborhood and ZIP 60018.
  • Neighborhood value signalAmong 503 residential records in the same neighborhood, the average assessor market value is about $240 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.8% on average.

Comparable assessments

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

  • 9931 Norwood St Rosemont, IL 60018
    1,512 sqft | $330/sqft | built 1960 | 11% smaller (1,512 vs 1,706 sqft); Similar age (1960 vs 1962); Similar lot size (11,538 vs 11,595 sqft)
    $498,250
  • 6016 Ruby St Rosemont, IL 60018
    1,662 sqft | $307/sqft | built 1968 | Similar size (1,662 vs 1,706 sqft); Lot 11% smaller (10,377 vs 11,595 sqft); Same quality (Average)
    $510,000
  • 10023 Hope Dr Rosemont, IL 60018
    1,718 sqft | $285/sqft | built 1970 | Similar size (1,718 vs 1,706 sqft); Same quality (Average); Same bed/bath (3/1)
    $490,000
  • 6239 N Scott St Rosemont, IL 60018
    1,967 sqft | $229/sqft | built 1956 | Similar lot size (11,716 vs 11,595 sqft); Same quality (Average); Same neighborhood
    $450,000
  • 10018 Norwood St Rosemont, IL 60018
    1,663 sqft | $307/sqft | built 1962 | Similar size (1,663 vs 1,706 sqft); Built same year (1962); Same quality (Average)
    $510,000

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: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

No change in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$460,000$00.0%
2025$460,000+$10,000+2.2%
2024$450,000$00.0%
2023$450,000$00.0%
2022$450,000+$126,570+39.1%
2021$323,430+$200.0%
2020$323,410——
6-year total+$136,590+42.2%