Cook County Value

515 51st Ave Hillside, IL 60162

4 bed / 2 bath, 1,423 sqft, built 1966, in Proviso. Assessor market value for 2026: $280,000.

Cook County account 15083130550000

Likely too high

about $43,000

8 similar homes nearby point to a value about $43,000 lower than yours.

Assessor market value$280,000
Similar homes$237,228
$42,772 gap · bars start at $0

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

Assessor market value
$280,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,423 sqft
$197 per sqft
Year built
1966
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 $166.21/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 $55,180. Counting your land in place of theirs where theirs is less, they support a value of $237,228.

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 60162 and Proviso assessment pages.

Local guide: Proviso Township 2026 Property Tax Appeal Guide.

Appeal deadlines

For Proviso, appeals to the Assessor are open through (8 days left).

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 3.7% from $270,000 in 2025 to $280,000 in 2026.
  • Assessor market value per square footThe current public record shows about $197 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Proviso neighborhood and ZIP 60162.
  • Neighborhood value signalAmong 3,350 residential records in the same neighborhood, the average assessor market value is about $178 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about +4.6% on average.

Comparable assessments

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

  • 605 Bohland Ave Bellwood, IL 60104
    1,378 sqft | $167/sqft | built 1967 | Similar size (1,378 vs 1,423 sqft); Similar age (1967 vs 1966); Similar lot size (6,837 vs 6,689 sqft)
    $230,010
  • 445 Granville Ave Bellwood, IL 60104
    1,431 sqft | $140/sqft | built 1954 | Similar size (1,431 vs 1,423 sqft); Similar lot size (6,700 vs 6,689 sqft); Same quality (Average)
    $200,010
  • 519 Hyde Park Ave Bellwood, IL 60104
    1,444 sqft | $166/sqft | built 1955 | Similar size (1,444 vs 1,423 sqft); Similar lot size (6,700 vs 6,689 sqft); Same quality (Average)
    $240,010
  • 425 Granville Ave Bellwood, IL 60104
    1,452 sqft | $165/sqft | built 1960 | Similar size (1,452 vs 1,423 sqft); Similar lot size (6,700 vs 6,689 sqft); Same quality (Average)
    $240,010
  • 427 52nd Ave Bellwood, IL 60104
    1,431 sqft | $154/sqft | built 1976 | Similar size (1,431 vs 1,423 sqft); Similar lot size (6,700 vs 6,689 sqft); Same quality (Average)
    $220,010

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 3.7% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$280,000+$10,000+3.7%
2025$270,000$00.0%
2024$270,000$00.0%
2023$270,000+$70,620+35.4%
2022$199,380$00.0%
2021$199,380+$100.0%
2020$199,370——
6-year total+$80,630+40.4%