Cook County Value

2627 N Mason Ave, Chicago, IL 60639

3 bed / 1 bath, 1,112 sqft, built 1959, in Jefferson. Assessor market value for 2025: $290,000.

Cook County account 13294090420000

Assessor market value
$290,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,112 sqft
$261 per sqft
Year built
1959
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 60639 and Jefferson assessment pages.

Appeal deadlines

Jefferson 2026 appeal dates 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 $290,000 in 2024 to $290,000 in 2025.
  • 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 Jefferson neighborhood and ZIP 60639.
  • Neighborhood value signalAmong 1,608 residential records in the same neighborhood, the average assessor market value is about $208 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

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

  • 2624 N Mulligan Ave, Chicago, IL 60639
    1,120 sqft | $277/sqft | built 1956 | Similar size (1,120 vs 1,112 sqft); Similar age (1956 vs 1959); Similar lot size (3,968 vs 4,032 sqft)
    $310,000
  • 2626 N Meade Ave, Chicago, IL 60639
    1,080 sqft | $253/sqft | built 1959 | Similar size (1,080 vs 1,112 sqft); Built same year (1959); Similar lot size (4,132 vs 4,032 sqft)
    $273,760
  • 2505 N Major Ave, Chicago, IL 60639
    1,118 sqft | $188/sqft | built 1958 | Similar size (1,118 vs 1,112 sqft); Similar age (1958 vs 1959); Similar lot size (3,720 vs 4,032 sqft)
    $210,000
  • 2504 N Major Ave, Chicago, IL 60639
    1,118 sqft | $206/sqft | built 1958 | Similar size (1,118 vs 1,112 sqft); Similar age (1958 vs 1959); Similar lot size (3,720 vs 4,032 sqft)
    $230,000
  • 2605 N Major Ave, Chicago, IL 60639
    1,118 sqft | $259/sqft | built 1960 | Similar size (1,118 vs 1,112 sqft); Similar age (1960 vs 1959); Similar lot size (3,720 vs 4,032 sqft)
    $290,000

Recent comparable sales

Sales selected by similarity to the subject property.

Public appraisal comparison for 2025. 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

No change in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$290,000$00.0%
2024$290,000+$70,000+31.8%
2023$220,000$00.0%
2022$220,000$00.0%
2021$220,000+$41,320+23.1%
2020$178,680——
5-year total+$111,320+62.3%