700 Union Ave
Boulder, CO 80304
5 bd 4 ba 3,503 sqft Built 1965 Lot 13,242 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 | $47,194 | $97,025 | $144,219 | $13,751 |
| 2024 | $47,194 | $97,025 | $144,219 | $14,026 |
| 2023 | $57,794 | $105,498 | $163,292 | $13,783 |
| 2022 | $33,624 | $82,212 | $115,836 | $10,757 |
| 2021 | $34,592 | $84,577 | $119,169 | $10,257 |
| 2020 | $36,908 | $65,065 | $101,973 | $8,876 |
| 2019 | $36,908 | $65,065 | $101,973 | $8,740 |
| 2018 | $48,722 | $42,408 | $91,130 | $7,900 |
| 2017 | $48,722 | $42,408 | $91,130 | $7,653 |
| 2016 | $28,616 | $58,745 | $87,361 | $7,562 |
| 2015 | $28,616 | $58,745 | $87,361 | $7,161 |
| 2014 | $43,844 | $25,074 | $68,918 | $5,925 |
| 2013 | $43,844 | $25,074 | $68,918 | $5,794 |
| 2011 | $32,636 | $26,586 | $59,222 | $4,917 |
| 2010 | $32,636 | $26,586 | $59,222 | $4,838 |
| 2009 | $32,636 | $26,586 | $59,222 | $4,517 |
| 2008 | $21,840 | $32,840 | $54,680 | $4,021 |
Property facts
Year built
1965
Property type
single_family
Stories
—
Beds
5
Baths
4
Living area
3,503 sqft
Lot size
13,242 sqft
ZIP code
80304
City
Boulder
Street
Union Ave
Coordinates
40.05279, -105.28931
Comparable properties nearby
Frequently asked questions
When did 700 Union Ave last sell?
No public-record sale is on file for 700 Union Ave.
What is the current tax assessment for 700 Union Ave?
The most recent total assessment for 700 Union Ave (year 2025) is $144,219 with $13,751 in property tax.
When was 700 Union Ave built?
700 Union Ave was built in 1965.
How does 700 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 700 Union Ave?
700 Union Ave is a 5 bed, 4 bath, 3,503 sqft, 13,242 sqft lot single_family.
Is 700 Union Ave a flip candidate?
No — 700 Union Ave does not appear in our flips dataset.
Is 700 Union Ave a tax-appeal candidate?
No — 700 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