Cook County Value

303 Park Ave River Forest, IL 60305

4 bed / 2 bath, 2,221 sqft, built 1947, in River Forest. Assessor market value for 2026: $503,630.

Cook County account 15123030120000

Assessor market value
$503,630
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
2,221 sqft
$227 per sqft
Year built
1947
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 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 50.0% from $335,760 in 2025 to $503,630 in 2026.
  • Assessor market value per square footThe current public record shows about $227 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.

  • 303 Park Ave River Forest, IL 60305
    2,221 sqft | $198/sqft | built 1947 | Similar size (2,221 vs 2,221 sqft); Built same year (1947); Similar lot size (8,010 vs 8,152 sqft)
    $439,390
  • 50 Park Ave River Forest, IL 60305
    2,156 sqft | $329/sqft | built 1952 | Similar size (2,156 vs 2,221 sqft); Similar age (1952 vs 1947); Similar lot size (8,326 vs 8,152 sqft)
    $710,000
  • 311 Keystone Ave River Forest, IL 60305
    2,194 sqft | $333/sqft | built 1948 | Similar size (2,194 vs 2,221 sqft); Similar age (1948 vs 1947); Similar lot size (8,836 vs 8,152 sqft)
    $730,000
  • 234 Park Ave River Forest, IL 60305
    2,081 sqft | $340/sqft | built 1949 | 6% smaller (2,081 vs 2,221 sqft); Similar age (1949 vs 1947); Similar lot size (8,910 vs 8,152 sqft)
    $707,320
  • 124 Franklin Ave River Forest, IL 60305
    2,061 sqft | $329/sqft | built 1948 | 7% smaller (2,061 vs 2,221 sqft); Similar age (1948 vs 1947); Lot 11% larger (9,063 vs 8,152 sqft)
    $678,740

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 50.0% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$503,630+$167,870+50.0%
2025$335,760$00.0%
2024$335,760$00.0%
2023$335,760+$77,150+29.8%
2022$258,610$00.0%
2021$258,610+$100.0%
2020$258,600——
6-year total+$245,030+94.8%