Cook County Value

738 N May St, Chicago, IL 60642

12 bed / 6 bath, 5,174 sqft, built 1891, in Jefferson Assessor market value for 2026: $1,123,510.

Cook County account 17082000140000

Assessor market value
$1,123,510
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
5,174 sqft
$217 per sqft
Year built
1891
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 60642 and Jefferson assessment pages.

Local guide: West Chicago Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For West Chicago, appeals to the Assessor closed . Board of Review dates for West Chicago 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 $1,123,510 in 2025 to $1,123,510 in 2026.
  • Assessor market value per square footThe current public record shows about $217 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 60642.
  • Neighborhood value signalAmong 3,753 residential records in the same neighborhood, the average assessor market value is about $356 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.

  • 1508 W Chestnut St, Chicago, IL 60642
    5,003 sqft | $246/sqft | built 1890 | Similar size (5,003 vs 5,174 sqft); Similar age (1890 vs 1891); Similar lot size (3,200 vs 3,413 sqft)
    $1,229,490
  • 1421 W Huron St, Chicago, IL 60642
    5,280 sqft | $218/sqft | built 1889 | Similar size (5,280 vs 5,174 sqft); Similar age (1889 vs 1891); Similar lot size (3,125 vs 3,413 sqft)
    $1,153,110
  • 1428 W Superior St, Chicago, IL 60642
    5,073 sqft | $210/sqft | built 1890 | Similar size (5,073 vs 5,174 sqft); Similar age (1890 vs 1891); Similar lot size (3,075 vs 3,413 sqft)
    $1,064,110
  • 1635 W Superior St, Chicago, IL 60622
    5,160 sqft | $210/sqft | built 1891 | Similar size (5,160 vs 5,174 sqft); Built same year (1891); Lot 15% smaller (2,904 vs 3,413 sqft)
    $1,081,170
  • 1226 N Cleaver St, Chicago, IL 60642
    5,148 sqft | $223/sqft | built 1892 | Similar size (5,148 vs 5,174 sqft); Similar age (1892 vs 1891); Lot 14% smaller (2,937 vs 3,413 sqft)
    $1,150,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

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$1,123,510$00.0%
2025$1,123,510−$96,490−7.9%
2024$1,220,000+$185,830+18.0%
2023$1,034,170$00.0%
2022$1,034,170−$95,830−8.5%
2021$1,130,000+$386,650+52.0%
2020$743,350——
6-year total+$380,160+51.1%