645 Northwestern Ave
South Beloit, IL 61080
3 bd 2 ba 897 sqft Built 1935 Lot 6,098 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 |
|---|---|---|---|---|
| 2025 | $34,959 | $2,838 | $37,797 | $2,632 |
| 2023 | $31,990 | $2,597 | $34,587 | $2,273 |
| 2022 | $24,128 | $1,959 | $26,087 | $2,140 |
| 2021 | $22,579 | $1,833 | $24,412 | $2,047 |
| 2020 | $21,862 | $1,775 | $23,637 | $1,997 |
| 2019 | $21,060 | $1,710 | $22,770 | $1,979 |
| 2018 | $20,072 | $1,630 | $21,702 | $1,953 |
| 2017 | $19,239 | $1,562 | $20,801 | $1,916 |
| 2016 | $18,608 | $1,511 | $20,119 | $1,470 |
| 2015 | $18,183 | $1,476 | $19,659 | $1,448 |
| 2014 | $19,552 | $1,476 | $21,028 | $1,600 |
| 2013 | $19,858 | $1,499 | $21,357 | $1,594 |
| 2012 | $20,365 | $1,537 | $21,902 | $1,576 |
| 2011 | $23,317 | $1,574 | $24,891 | $1,738 |
| 2010 | $23,903 | $1,614 | $25,517 | $1,679 |
| 2008 | $23,921 | $1,615 | $25,536 | $1,644 |
| 2007 | $21,749 | $1,556 | $23,305 | $1,923 |
| 2006 | $21,350 | $1,527 | $22,877 | $1,949 |
Property facts
Year built
1935
Property type
single_family
Stories
2
Beds
3
Baths
2
Living area
897 sqft
Lot size
6,098 sqft
ZIP code
61080
City
South Beloit
Street
Northwestern Ave
Coordinates
42.48709, -89.03534
Comparable properties nearby
Frequently asked questions
When did 645 Northwestern Ave last sell?
No public-record sale is on file for 645 Northwestern Ave.
What is the current tax assessment for 645 Northwestern Ave?
The most recent total assessment for 645 Northwestern Ave (year 2025) is $37,797 with $2,632 in property tax.
When was 645 Northwestern Ave built?
645 Northwestern Ave was built in 1935.
How does 645 Northwestern Ave compare to others on Northwestern Ave?
We track 8 other properties on Northwestern Ave. Browse the list under "Other properties on Northwestern Ave" to compare beds, baths, and sale history.
What are the property facts for 645 Northwestern Ave?
645 Northwestern Ave is a 3 bed, 2 bath, 897 sqft, 6,098 sqft lot single_family.
Is 645 Northwestern Ave a flip candidate?
No — 645 Northwestern Ave does not appear in our flips dataset.
Is 645 Northwestern Ave a tax-appeal candidate?
No — 645 Northwestern Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-1.1%
Implied 1-yr
-4.2%
2026 Q3
$210K
2026 Q4
$207.7K
ZIP 61080 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Northwestern Ave