Cook County Value

330 Blackstone Ave, La Grange, IL 60525

4 bed / 3 bath, 3,390 sqft, built 1927, in Lyons. Assessor market value for 2026: $1,663,330.

Cook County account 18054200100000

Likely too high

about $264,000

8 similar homes nearby point to a value about $264,000 lower than yours.

Assessor market value$1,663,330
Similar homes$1,399,663
$263,667 gap · bars start at $0

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

Assessor market value
$1,663,330
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
3,390 sqft
$491 per sqft
Year built
1927
Average quality

Why we think so

Similar homes' assessments

Strong

8 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $410.13/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 $208,650. Counting your land in place of theirs where theirs is less, they support a value of $1,399,663.

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 56.6% from $1,062,070 in 2025 to $1,663,330 in 2026.
  • Assessor market value per square footThe current public record shows about $491 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 932 residential records in the same neighborhood, the average assessor market value is about $390 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +32.9% on average.

Comparable assessments

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

  • 245 S Park Rd, La Grange, IL 60525
    3,316 sqft | $410/sqft | built 1926 | Similar size (3,316 vs 3,390 sqft); Similar age (1926 vs 1927); Similar lot size (15,000 vs 16,050 sqft)
    $1,360,000
  • 347 Blackstone Ave, La Grange, IL 60525
    3,469 sqft | $395/sqft | built 1923 | Similar size (3,469 vs 3,390 sqft); Similar age (1923 vs 1927); Similar lot size (16,200 vs 16,050 sqft)
    $1,370,000
  • 204 Sunset Ave, La Grange, IL 60525
    3,222 sqft | $448/sqft | built 1925 | Similar size (3,222 vs 3,390 sqft); Similar age (1925 vs 1927); Similar lot size (16,500 vs 16,050 sqft)
    $1,442,930
  • 321 Blackstone Ave, La Grange, IL 60525
    3,278 sqft | $409/sqft | built 1923 | Similar size (3,278 vs 3,390 sqft); Similar age (1923 vs 1927); Similar lot size (16,050 vs 16,050 sqft)
    $1,340,000
  • 450 Blackstone Ave, La Grange, IL 60525
    3,108 sqft | $354/sqft | built 1927 | 8% smaller (3,108 vs 3,390 sqft); Built same year (1927); Similar lot size (15,630 vs 16,050 sqft)
    $1,100,000

Recent comparable sales

Sales selected by similarity to the subject property.

  • 601 S Brainard Ave, La Grange, IL 60525
    June-29-2026 | 2,920 sqft | $360/sqft | built 1937 | 14% size difference (2,920 sqft); Moderate age difference (10 years newer); Sold after the valuation date
    $1,050,000
  • 624 S Spring Ave, La Grange, IL 60525
    3,742 sqft | $466/sqft | built 1934 | 10% size difference (3,742 sqft); Moderate age difference (7 years newer); Same beds (4)
    $1,742,500

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 56.6% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$1,663,330+$601,260+56.6%
2025$1,062,070+$63,330+6.3%
2024$998,740−$82,040−7.6%
2023$1,080,780+$313,080+40.8%
2022$767,700−$42,310−5.2%
2021$810,010−$79,860−9.0%
2020$889,870——
6-year total+$773,460+86.9%