517 Union St
Oconomowoc, WI 53066
3 bd 1 ba 1,800 sqft Built 1901 Lot 9,148 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 | $281,700 | $78,500 | $360,200 | $4,017 |
| 2024 | $239,200 | $78,500 | $317,700 | $3,389 |
| 2023 | $220,200 | $78,500 | $298,700 | $3,328 |
| 2022 | $199,500 | $78,500 | $278,000 | $3,780 |
| 2021 | $170,100 | $78,500 | $248,600 | $3,325 |
| 2020 | $108,600 | $47,000 | $155,600 | $2,670 |
| 2019 | $108,600 | $47,000 | $155,600 | $2,566 |
| 2018 | $108,600 | $47,000 | $155,600 | $2,493 |
| 2017 | $108,600 | $47,000 | $155,600 | $2,495 |
| 2016 | $108,600 | $47,000 | $155,600 | $2,520 |
| 2015 | $108,600 | $47,000 | $155,600 | $2,514 |
| 2014 | $108,600 | $47,000 | $155,600 | $2,518 |
| 2013 | $130,400 | $54,000 | $184,400 | $3,087 |
| 2012 | $130,400 | $54,000 | $184,400 | $3,119 |
| 2010 | $130,400 | $54,000 | $184,400 | $2,873 |
| 2009 | $130,400 | $54,000 | $184,400 | $2,734 |
| 2008 | $130,400 | $54,000 | $184,400 | $2,611 |
| 2006 | $117,700 | $37,600 | $155,300 | $2,662 |
Property facts
Year built
1901
Property type
single_family
Stories
2
Beds
3
Baths
1
Living area
1,800 sqft
Lot size
9,148 sqft
ZIP code
53066
City
Oconomowoc
Street
Union St
Coordinates
43.10651, -88.49174
Comparable properties nearby
Frequently asked questions
When did 517 Union St last sell?
No public-record sale is on file for 517 Union St.
What is the current tax assessment for 517 Union St?
The most recent total assessment for 517 Union St (year 2025) is $360,200 with $4,017 in property tax.
When was 517 Union St built?
517 Union St was built in 1901.
How does 517 Union St compare to others on Union St?
We track 3 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 517 Union St?
517 Union St is a 3 bed, 1 bath, 1,800 sqft, 9,148 sqft lot single_family.
Is 517 Union St a flip candidate?
No — 517 Union St does not appear in our flips dataset.
Is 517 Union St a tax-appeal candidate?
No — 517 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
+0.4%
Implied 1-yr
+1.8%
2026 Q3
$791.9K
2026 Q4
$795.3K
ZIP 53066 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union St