507 William St
Mount Prospect, IL 60056
3 bd 3 ba 1,400 sqft Built 1957 Lot 7,235 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2023 | $25,764 | $7,236 | $33,000 | $8,268 |
| 2022 | $25,764 | $7,236 | $33,000 | $7,922 |
| 2021 | $21,783 | $4,703 | $26,486 | $7,215 |
| 2020 | $21,783 | $4,703 | $26,486 | $7,135 |
| 2019 | $28,021 | $4,703 | $32,724 | $8,034 |
| 2018 | $22,605 | $3,979 | $26,584 | $7,081 |
| 2017 | $22,605 | $3,979 | $26,584 | $7,119 |
| 2016 | $22,605 | $3,979 | $26,584 | $6,398 |
| 2015 | $19,842 | $3,256 | $23,098 | $5,951 |
| 2014 | $19,842 | $3,256 | $23,098 | $5,866 |
| 2013 | $19,842 | $3,256 | $23,098 | $5,843 |
| 2012 | $23,771 | $3,798 | $27,569 | $6,458 |
| 2011 | $23,771 | $3,798 | $27,569 | $6,253 |
| 2010 | $23,771 | $3,798 | $27,569 | $5,515 |
| 2009 | $28,693 | $3,979 | $32,672 | $5,943 |
| 2007 | $28,765 | $6,367 | $35,132 | $4,519 |
| 2006 | $20,888 | $6,367 | $27,255 | $4,352 |
Property facts
Year built
1957
Property type
single_family
Stories
1
Beds
3
Baths
3
Living area
1,400 sqft
Lot size
7,235 sqft
ZIP code
60056
City
Mount Prospect
Street
William St
Coordinates
42.05663, -87.92828
Comparable properties nearby
Frequently asked questions
When did 507 William St last sell?
No public-record sale is on file for 507 William St.
What is the current tax assessment for 507 William St?
The most recent total assessment for 507 William St (year 2023) is $33,000 with $8,268 in property tax.
When was 507 William St built?
507 William St was built in 1957.
How does 507 William St compare to others on William St?
We track 8 other properties on William St. Browse the list under "Other properties on William St" to compare beds, baths, and sale history.
What are the property facts for 507 William St?
507 William St is a 3 bed, 3 bath, 1,400 sqft, 7,235 sqft lot single_family.
Is 507 William St a flip candidate?
No — 507 William St does not appear in our flips dataset.
Is 507 William St a tax-appeal candidate?
No — 507 William St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+2.7%
Implied 1-yr
+10.7%
2026 Q3
$471.8K
2026 Q4
$482.5K
ZIP 60056 — Median Price History + Forecast
Explore nearby
Geography
Other properties on William St