725 Union Ave
Boulder, CO 80304
4 bd 3 ba 2,194 sqft Built 1964 Lot 7,382 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 | $22,975 | $63,994 | $86,969 | $8,292 |
| 2024 | $22,975 | $63,994 | $86,969 | $8,353 |
| 2023 | $27,999 | $69,834 | $97,833 | $8,205 |
| 2022 | $17,438 | $55,954 | $73,392 | $6,890 |
| 2021 | $17,939 | $57,565 | $75,504 | $6,574 |
| 2020 | $32,983 | $41,899 | $74,882 | $6,518 |
| 2019 | $32,983 | $41,899 | $74,882 | $6,418 |
| 2018 | $37,865 | $27,792 | $65,657 | $5,692 |
| 2017 | $37,865 | $27,792 | $65,657 | $5,514 |
| 2016 | $22,678 | $39,800 | $62,478 | $5,408 |
| 2015 | $22,678 | $39,800 | $62,478 | $5,121 |
| 2014 | $33,981 | $17,353 | $51,334 | $4,413 |
| 2013 | $33,981 | $17,353 | $51,334 | $4,316 |
| 2011 | $38,606 | $17,990 | $56,596 | $4,699 |
| 2010 | $38,606 | $17,990 | $56,596 | $4,362 |
| 2009 | $38,606 | $17,990 | $56,596 | $4,073 |
| 2008 | $23,210 | $27,860 | $51,070 | $3,756 |
Property facts
Year built
1964
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
2,194 sqft
Lot size
7,382 sqft
ZIP code
80304
City
Boulder
Street
Union Ave
Coordinates
40.05323, -105.28906
Comparable properties nearby
Frequently asked questions
When did 725 Union Ave last sell?
No public-record sale is on file for 725 Union Ave.
What is the current tax assessment for 725 Union Ave?
The most recent total assessment for 725 Union Ave (year 2025) is $86,969 with $8,292 in property tax.
When was 725 Union Ave built?
725 Union Ave was built in 1964.
How does 725 Union Ave compare to others on Union Ave?
We track 8 other properties on Union Ave. Browse the list under "Other properties on Union Ave" to compare beds, baths, and sale history.
What are the property facts for 725 Union Ave?
725 Union Ave is a 4 bed, 3 bath, 2,194 sqft, 7,382 sqft lot single_family.
Is 725 Union Ave a flip candidate?
No — 725 Union Ave does not appear in our flips dataset.
Is 725 Union Ave a tax-appeal candidate?
No — 725 Union 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
+1.2%
Implied 1-yr
+5.0%
2026 Q3
$2.17M
2026 Q4
$2.2M
ZIP 80304 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union Ave