Cook County Value

8120 N Washington St, Niles, IL 60714

4 bed / 2 bath, 1,638 sqft, built 1942, in Maine Assessor market value for 2026: $440,000.

Cook County account 09234021060000

In line with similar homes

8 similar homes nearby support a value at or above your county value.

Assessor market value$440,000
Similar homes$449,958
No gap: similar homes are at or above the county value · bars start at $0

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

Assessor market value
$440,000
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
1,638 sqft
$269 per sqft
Year built
1942
Average quality

What we found

Similar homes' assessments

Weak

3 of 8 similar homes are assessed lower per square foot. Their similarity-weighted median is $270.11/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 $121,940. Counting your land in place of theirs where theirs is less, they support a value of $449,958.

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 60714 and Maine assessment pages.

Local guide: Maine Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for Maine 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 56.6% from $280,970 in 2025 to $440,000 in 2026.
  • Assessor market value per square footThe current public record shows about $269 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the Maine neighborhood and ZIP 60714.
  • Neighborhood value signalAmong 956 residential records in the same neighborhood, the average assessor market value is about $284 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -1.5% on average.

Comparable assessments

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

  • 8111 N Prospect Ave, Niles, IL 60714
    1,701 sqft | $282/sqft | built 1949 | Similar size (1,701 vs 1,638 sqft); Similar lot size (8,800 vs 9,380 sqft); Same quality (Average)
    $480,000
  • 8635 W Park Ave, Niles, IL 60714
    1,740 sqft | $270/sqft | built 1937 | 6% larger (1,740 vs 1,638 sqft); Similar age (1937 vs 1942); Similar lot size (9,350 vs 9,380 sqft)
    $470,000
  • 8725 Park Ln, Niles, IL 60714
    1,590 sqft | $270/sqft | built 1957 | Similar size (1,590 vs 1,638 sqft); Similar lot size (9,350 vs 9,380 sqft); Same quality (Average)
    $430,000
  • 8060 N Washington St, Niles, IL 60714
    1,552 sqft | $277/sqft | built 1955 | 5% smaller (1,552 vs 1,638 sqft); Similar lot size (10,050 vs 9,380 sqft); Same quality (Average)
    $430,000
  • 8404 N Greenwood Ave, Niles, IL 60714
    1,799 sqft | $239/sqft | built 1950 | 10% larger (1,799 vs 1,638 sqft); Lot 10% smaller (8,400 vs 9,380 sqft); Same quality (Average)
    $430,000

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 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$440,000+$159,030+56.6%
2025$280,970−$49,030−14.9%
2024$330,000$00.0%
2023$330,000$00.0%
2022$330,000+$90,060+37.5%
2021$239,940+$100.0%
2020$239,930——
6-year total+$200,070+83.4%