509 20th Ave
Onalaska, WI 54650
5 bd 3 ba 2,050 sqft Built 1990 Lot 9,583 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 | $370,700 | $67,100 | $437,800 | $5,782 |
| 2023 | $256,100 | $47,900 | $304,000 | $4,770 |
| 2022 | $256,100 | $47,900 | $304,000 | $4,613 |
| 2021 | $226,800 | $33,400 | $260,200 | $4,493 |
| 2020 | $226,800 | $33,400 | $260,200 | $4,402 |
| 2019 | $226,800 | $33,400 | $260,200 | $4,481 |
| 2018 | $188,100 | $28,000 | $216,100 | $4,058 |
| 2017 | $188,100 | $28,000 | $216,100 | $4,078 |
| 2016 | $188,100 | $28,000 | $216,100 | $4,191 |
| 2015 | $171,000 | $26,300 | $197,300 | $4,169 |
| 2014 | $171,000 | $26,300 | $197,300 | $4,134 |
| 2013 | $171,000 | $26,300 | $197,300 | $4,123 |
| 2012 | $171,000 | $26,300 | $197,300 | $3,955 |
| 2011 | $172,700 | $26,400 | $199,100 | $3,898 |
| 2010 | $172,700 | $26,400 | $199,100 | $3,868 |
| 2009 | $172,700 | $26,400 | $199,100 | $3,728 |
| 2008 | $172,700 | $26,400 | $199,100 | $3,521 |
| 2007 | $157,900 | $24,000 | $181,900 | $3,644 |
Property facts
Year built
1990
Property type
single_family
Stories
—
Beds
5
Baths
3
Living area
2,050 sqft
Lot size
9,583 sqft
ZIP code
54650
City
Onalaska
Street
20th Ave
Coordinates
43.87894, -91.20513
Comparable properties nearby
Frequently asked questions
When did 509 20th Ave last sell?
No public-record sale is on file for 509 20th Ave.
What is the current tax assessment for 509 20th Ave?
The most recent total assessment for 509 20th Ave (year 2025) is $437,800 with $5,782 in property tax.
When was 509 20th Ave built?
509 20th Ave was built in 1990.
How does 509 20th Ave compare to others on 20th Ave?
We track 2 other properties on 20th Ave. Browse the list under "Other properties on 20th Ave" to compare beds, baths, and sale history.
What are the property facts for 509 20th Ave?
509 20th Ave is a 5 bed, 3 bath, 2,050 sqft, 9,583 sqft lot single_family.
Is 509 20th Ave a flip candidate?
No — 509 20th Ave does not appear in our flips dataset.
Is 509 20th Ave a tax-appeal candidate?
No — 509 20th 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
-1.6%
Implied 1-yr
-6.2%
2026 Q3
$556.3K
2026 Q4
$556.3K
ZIP 54650 — Median Price History + Forecast
Explore nearby
Geography
Other properties on 20th Ave