Cook County Value

515 Margaret St Thornton, IL 60476

4 bed / 2 bath, 1,484 sqft, built 1902, in Thornton. Assessor market value for 2025: $110,000.

Cook County account 29341390420000

Assessor market value
$110,000
Tax year 2025 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,484 sqft
$74 per sqft
Year built
1902
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 60476 and Thornton assessment pages.

Appeal deadlines

Thornton 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 $110,000 in 2023 to $110,000 in 2025.
  • Assessor market value per square footThe current public record shows about $74 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Thornton neighborhood and ZIP 60476.
  • Neighborhood value signalAmong 955 residential records in the same neighborhood, the average assessor market value is about $118 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values stayed about flat on average.

Comparable assessments

Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.

  • 109 S Hunter St Thornton, IL 60476
    1,476 sqft | $88/sqft | built 1904 | Similar size (1,476 vs 1,484 sqft); Similar age (1904 vs 1902); Similar lot size (7,200 vs 7,263 sqft)
    $130,000
  • 217 N Hunter St Thornton, IL 60476
    1,474 sqft | $81/sqft | built 1901 | Similar size (1,474 vs 1,484 sqft); Similar age (1901 vs 1902); Similar lot size (7,200 vs 7,263 sqft)
    $120,000
  • 103 S Hunter St Thornton, IL 60476
    1,518 sqft | $86/sqft | built 1901 | Similar size (1,518 vs 1,484 sqft); Similar age (1901 vs 1902); Similar lot size (7,200 vs 7,263 sqft)
    $130,000
  • 117 N Hunter St Thornton, IL 60476
    1,534 sqft | $78/sqft | built 1896 | Similar size (1,534 vs 1,484 sqft); Similar lot size (7,200 vs 7,263 sqft); Same quality (Average)
    $120,000
  • 400 E Eleanor St Thornton, IL 60476
    1,408 sqft | $92/sqft | built 1898 | 5% smaller (1,408 vs 1,484 sqft); Similar age (1898 vs 1902); Similar lot size (7,200 vs 7,263 sqft)
    $130,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2025. 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

Up 58.2% in 2025 from 2024.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2025$110,000+$40,480+58.2%
2024$69,520−$40,480−36.8%
2023$110,000+$42,640+63.3%
2022$67,360$00.0%
2021$67,360$00.0%
2020$67,360——
5-year total+$42,640+63.3%