3 bed / 1 bath, 968 sqft, built 1918, in Proviso Assessor market value for 2026: $280,000.
Cook County account 15103000020000
Likely too high
about $100,000
8 similar homes nearby point to a value about $100,000 lower than yours.
How sure: High · 8 similar homes (5 shown below) · public records only
Strong
8 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $185.19/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 $24,170. Counting your land in place of theirs where theirs is less, they support a value of $179,641.
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 60104 and Proviso assessment pages.
Local guide: Proviso Township 2026 Property Tax Appeal Guide.
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.
These public CCAO records highlight what may be worth checking before you file.
Showing 5 of the 8 similar homes in this property's equity comparison, from public appraisal records.
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.
Up 86.7% in 2026 from 2025.
| Tax year | Assessor market value | Change | Change % |
|---|---|---|---|
| 2026 | $280,000 | +$130,000 | +86.7% |
| 2025 | $150,000 | $0 | 0.0% |
| 2024 | $150,000 | $0 | 0.0% |
| 2023 | $150,000 | +$12,560 | +9.1% |
| 2022 | $137,440 | $0 | 0.0% |
| 2021 | $137,440 | $0 | 0.0% |
| 2020 | $137,440 | — | — |
| 6-year total | +$142,560 | +103.7% |