307 Union St
Sun Prairie, WI 53590
3 bd 2 ba 1,618 sqft Built 1944 Lot 10,890 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 | $273,400 | $66,100 | $339,500 | $6,690 |
| 2023 | $273,400 | $66,100 | $339,500 | $5,778 |
| 2022 | $191,400 | $60,900 | $252,300 | $5,334 |
| 2021 | $191,400 | $60,900 | $252,300 | $5,220 |
| 2020 | $177,500 | $60,900 | $238,400 | $5,056 |
| 2019 | $134,600 | $53,000 | $187,600 | $4,448 |
| 2018 | $134,600 | $53,000 | $187,600 | $4,131 |
| 2017 | $134,600 | $53,000 | $187,600 | $3,983 |
| 2016 | $131,200 | $46,500 | $177,700 | $4,165 |
| 2015 | $131,200 | $46,500 | $177,700 | $4,050 |
| 2014 | $119,400 | $46,500 | $165,900 | $3,799 |
| 2013 | $119,400 | $46,500 | $165,900 | $3,987 |
| 2012 | $125,200 | $48,500 | $173,700 | $3,947 |
| 2011 | $125,200 | $48,500 | $173,700 | $4,042 |
| 2010 | $124,800 | $48,500 | $173,300 | $3,754 |
| 2008 | $126,100 | $48,500 | $174,600 | $3,489 |
| 2007 | $126,100 | $48,500 | $174,600 | $3,456 |
Property facts
Year built
1944
Property type
single_family
Stories
2
Beds
3
Baths
2
Living area
1,618 sqft
Lot size
10,890 sqft
ZIP code
53590
City
Sun Prairie
Street
Union St
Coordinates
43.18713, -89.21820
Comparable properties nearby
Frequently asked questions
When did 307 Union St last sell?
No public-record sale is on file for 307 Union St.
What is the current tax assessment for 307 Union St?
The most recent total assessment for 307 Union St (year 2025) is $339,500 with $6,690 in property tax.
When was 307 Union St built?
307 Union St was built in 1944.
How does 307 Union St compare to others on Union St?
We track 8 other properties on Union St. Browse the list under "Other properties on Union St" to compare beds, baths, and sale history.
What are the property facts for 307 Union St?
307 Union St is a 3 bed, 2 bath, 1,618 sqft, 10,890 sqft lot single_family.
Is 307 Union St a flip candidate?
No — 307 Union St does not appear in our flips dataset.
Is 307 Union St a tax-appeal candidate?
No — 307 Union 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
+3.8%
Implied 1-yr
+15.0%
2026 Q3
$527.9K
2026 Q4
$543.9K
ZIP 53590 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St