Cook County Value

850 11th Ave, La Grange, IL 60525

3 bed / 1 bath, 1,764 sqft, built 1954, in Lyons. Assessor market value for 2026: $440,010.

Cook County account 18092220120000

In line with similar homes

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

Assessor market value$440,010
Similar homes$481,960
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
$440,010
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,764 sqft
$249 per sqft
Year built
1954
Average quality

What we found

Similar homes' assessments

Weak

2 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $269.80/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 $105,720. Counting your land in place of theirs where theirs is less, they support a value of $481,960.

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 60525 and Lyons assessment pages.

Local guide: Lyons Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Lyons, appeals to the Assessor closed . Board of Review dates for Lyons 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 15.8% from $380,000 in 2025 to $440,010 in 2026.
  • Assessor market value per square footThe current public record shows about $249 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Lyons neighborhood and ZIP 60525.
  • Neighborhood value signalAmong 1,221 residential records in the same neighborhood, the average assessor market value is about $274 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +24.5% on average.

Comparable assessments

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

  • 5340 S Madison Ave Countryside, IL 60525
    1,796 sqft | $256/sqft | built 1952 | Similar size (1,796 vs 1,764 sqft); Similar age (1952 vs 1954); Similar lot size (11,304 vs 12,437 sqft)
    $460,000
  • 830 11th Ave, La Grange, IL 60525
    1,778 sqft | $276/sqft | built 1957 | Similar size (1,778 vs 1,764 sqft); Similar age (1957 vs 1954); Similar lot size (13,400 vs 12,437 sqft)
    $490,000
  • 827 12th Ave, La Grange, IL 60525
    1,880 sqft | $282/sqft | built 1958 | 7% larger (1,880 vs 1,764 sqft); Similar age (1958 vs 1954); Similar lot size (12,600 vs 12,437 sqft)
    $530,000
  • 730 10th Ave, La Grange, IL 60525
    1,647 sqft | $273/sqft | built 1956 | 7% smaller (1,647 vs 1,764 sqft); Similar age (1956 vs 1954); Similar lot size (13,400 vs 12,437 sqft)
    $450,000
  • 248 E Plainfield Rd Countryside, IL 60525
    1,696 sqft | $224/sqft | built 1956 | Similar size (1,696 vs 1,764 sqft); Similar age (1956 vs 1954); Lot 17% smaller (10,297 vs 12,437 sqft)
    $380,010

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 15.8% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$440,010+$60,010+15.8%
2025$380,000$00.0%
2024$380,000$00.0%
2023$380,000+$138,830+57.6%
2022$241,170$00.0%
2021$241,170+$100.0%
2020$241,160——
6-year total+$198,850+82.5%