Cook County Value

3 Mayfair Ct Lemont, IL 60439

4 bed / 2 bath, 2,106 sqft, built 1996, in Lemont. Assessor market value for 2026: $570,000.

Cook County account 22213030040000

Assessor market value
$570,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,106 sqft
$271 per sqft
Year built
1996
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 60439 and Lemont assessment pages.

Local guide: Lemont Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lemont, appeals to the Assessor closed . Board of Review dates for Lemont 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 increased 23.9% from $460,000 in 2025 to $570,000 in 2026.
  • Assessor market value per square footThe current public record shows about $271 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lemont neighborhood and ZIP 60439.
  • Neighborhood value signalAmong 279 residential records in the same neighborhood, the average assessor market value is about $262 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +30.6% on average.

Comparable assessments

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

  • 300 Wexford Dr Lemont, IL 60439
    2,130 sqft | $282/sqft | built 1994 | Similar size (2,130 vs 2,106 sqft); Similar age (1994 vs 1996); Similar lot size (11,993 vs 11,315 sqft)
    $600,000
  • 1 Lindsay Ct Lemont, IL 60439
    2,118 sqft | $255/sqft | built 1993 | Similar size (2,118 vs 2,106 sqft); Similar age (1993 vs 1996); Similar lot size (10,907 vs 11,315 sqft)
    $540,000
  • 8 Hilltop Ct Lemont, IL 60439
    2,111 sqft | $275/sqft | built 1992 | Similar size (2,111 vs 2,106 sqft); Similar age (1992 vs 1996); Similar lot size (11,974 vs 11,315 sqft)
    $580,000
  • 1229 Janas Ln Lemont, IL 60439
    2,135 sqft | $253/sqft | built 1992 | Similar size (2,135 vs 2,106 sqft); Similar age (1992 vs 1996); Lot 11% smaller (10,125 vs 11,315 sqft)
    $540,000
  • 7 Hilltop Ct Lemont, IL 60439
    2,015 sqft | $283/sqft | built 1990 | Similar size (2,015 vs 2,106 sqft); Similar lot size (11,859 vs 11,315 sqft); Same quality (Average)
    $570,000

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

Up 23.9% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$570,000+$110,000+23.9%
2025$460,000$00.0%
2024$460,000$00.0%
2023$460,000+$175,440+61.7%
2022$284,560$00.0%
2021$284,560$00.0%
2020$284,560——
6-year total+$285,440+100.3%