Cook County Value

13430 Maple Ave Lemont, IL 60439

4 bed / 4 bath, 2,864 sqft, built 1957, in Lemont. Assessor market value for 2026: $790,000.

Cook County account 22334040070000

Assessor market value
$790,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,864 sqft
$276 per sqft
Year built
1957
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 58.0% from $500,100 in 2025 to $790,000 in 2026.
  • Assessor market value per square footThe current public record shows about $276 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 278 residential records in the same neighborhood, the average assessor market value is about $298 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +39.8% on average.

Comparable assessments

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

  • 13205 Archer Ave Lemont, IL 60439
    2,818 sqft | $256/sqft | built 1963 | Similar size (2,818 vs 2,864 sqft); Similar lot size (58,109 vs 57,934 sqft); Same quality (Average)
    $720,000
  • 14555 Hickory Ave Lemont, IL 60439
    2,444 sqft | $262/sqft | built 1953 | 15% smaller (2,444 vs 2,864 sqft); Similar age (1953 vs 1957); Similar lot size (63,597 vs 57,934 sqft)
    $640,000
  • 1360 State St Lemont, IL 60439
    3,236 sqft | $238/sqft | built 1942 | 13% larger (3,236 vs 2,864 sqft); Similar lot size (52,184 vs 57,934 sqft); Same quality (Average)
    $770,000
  • 1382 State St Lemont, IL 60439
    2,939 sqft | $201/sqft | built 1967 | Similar size (2,939 vs 2,864 sqft); Same quality (Average); Same neighborhood
    $590,000
  • 13340 Maple Ave Lemont, IL 60439
    3,151 sqft | $241/sqft | built 1970 | 10% larger (3,151 vs 2,864 sqft); Similar lot size (54,014 vs 57,934 sqft); Same quality (Average)
    $760,000

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

Up 58.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$790,000+$289,900+58.0%
2025$500,100$00.0%
2024$500,100−$99,910−16.7%
2023$600,010+$182,710+43.8%
2022$417,300$00.0%
2021$417,300$00.0%
2020$417,300——
6-year total+$372,700+89.3%