Cook County Value

13370 Derby Rd Lemont, IL 60439

3 bed / 2 bath, 1,860 sqft, built 1970, in Lemont. Assessor market value for 2026: $540,000.

Cook County account 22343010140000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$540,000
Similar homes$567,523
No gap: similar homes are at or above the county value · bars start at $0

How sure: High · 8 similar homes (5 shown below) · public records only

Assessor market value
$540,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,860 sqft
$290 per sqft
Year built
1970
Average quality

What we found

Similar homes' assessments

Weak

4 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $298.98/sqft, but land is valued apart from the home, and some of them have less land value per square foot of home than yours, which counts as $289,990. Counting your land in place of theirs where theirs is less, they support a value of $567,523.

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 28.6% from $419,920 in 2025 to $540,000 in 2026.
  • Assessor market value per square footThe current public record shows about $290 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 2,806 residential records in the same neighborhood, the average assessor market value is about $255 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +30.4% on average.

Comparable assessments

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

  • 16622 127th Lemont, IL 60439
    1,781 sqft | $303/sqft | built 1965 | Similar size (1,781 vs 1,860 sqft); Similar age (1965 vs 1970); Similar lot size (35,246 vs 37,418 sqft)
    $540,000
  • 14225 Hawthorne Dr Lemont, IL 60439
    1,911 sqft | $304/sqft | built 1981 | Similar size (1,911 vs 1,860 sqft); Lot 14% larger (42,732 vs 37,418 sqft); Same quality (Average)
    $580,000
  • 12925 Archer Ave Lemont, IL 60439
    1,902 sqft | $273/sqft | built 1977 | Similar size (1,902 vs 1,860 sqft); Lot 16% larger (43,560 vs 37,418 sqft); Same quality (Average)
    $520,010
  • 12990 131st St Lemont, IL 60439
    1,903 sqft | $289/sqft | built 1967 | Similar size (1,903 vs 1,860 sqft); Similar age (1967 vs 1970); Same quality (Average)
    $550,000
  • 15362 130th Pl Lemont, IL 60439
    1,802 sqft | $305/sqft | built 1977 | Similar size (1,802 vs 1,860 sqft); Same quality (Average); Same bed/bath (3/2)
    $550,000

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 28.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$540,000+$120,080+28.6%
2025$419,920$00.0%
2024$419,920−$33,300−7.3%
2023$453,220+$99,800+28.2%
2022$353,420$00.0%
2021$353,420+$200.0%
2020$353,400——
6-year total+$186,600+52.8%