Cook County Value

342 Park Ave River Forest, IL 60305

3 bed / 1 bath, 1,079 sqft, built 1951, in River Forest. Assessor market value for 2026: $490,000.

Cook County account 15123020300000

Likely too high

about $26,000

8 similar homes nearby point to a value about $26,000 lower than yours.

Assessor market value$490,000
Similar homes$464,261
$25,739 gap · bars start at $0

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

Assessor market value
$490,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,079 sqft
$454 per sqft
Year built
1951
Average quality

Why we think so

Similar homes' assessments

Strong

6 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $425.12/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 $178,200. Counting your land in place of theirs where theirs is less, they support a value of $464,261.

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 60305 and River Forest assessment pages.

Local guide: River Forest Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for River Forest have closed (Assessor , Board of Review ). 2027 notices usually start in March.

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 11.4% from $440,000 in 2025 to $490,000 in 2026.
  • Assessor market value per square footThe current public record shows about $454 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the River Forest neighborhood and ZIP 60305.
  • Neighborhood value signalAmong 709 residential records in the same neighborhood, the average assessor market value is about $341 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +16.9% on average.

Comparable assessments

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

  • 142 Keystone Ave River Forest, IL 60305
    1,054 sqft | $493/sqft | built 1951 | Similar size (1,054 vs 1,079 sqft); Built same year (1951); Similar lot size (9,400 vs 8,910 sqft)
    $520,000
  • 202 Park Ave River Forest, IL 60305
    1,061 sqft | $443/sqft | built 1950 | Similar size (1,061 vs 1,079 sqft); Similar age (1950 vs 1951); Lot 11% larger (9,900 vs 8,910 sqft)
    $470,000
  • 46 Park Ave River Forest, IL 60305
    1,035 sqft | $425/sqft | built 1953 | Similar size (1,035 vs 1,079 sqft); Similar age (1953 vs 1951); Similar lot size (8,280 vs 8,910 sqft)
    $440,000
  • 343 Park Ave River Forest, IL 60305
    1,058 sqft | $416/sqft | built 1954 | Similar size (1,058 vs 1,079 sqft); Similar age (1954 vs 1951); Lot 10% smaller (8,010 vs 8,910 sqft)
    $440,000
  • 218 Park Ave River Forest, IL 60305
    1,057 sqft | $473/sqft | built 1949 | Similar size (1,057 vs 1,079 sqft); Similar age (1949 vs 1951); Lot 11% larger (9,900 vs 8,910 sqft)
    $500,000

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 11.4% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$490,000+$50,000+11.4%
2025$440,000$00.0%
2024$440,000$00.0%
2023$440,000+$83,890+23.6%
2022$356,110−$10,600−2.9%
2021$366,710+$19,060+5.5%
2020$347,650——
6-year total+$142,350+40.9%