770 Union Ave
Boulder, CO 80304
5 bd 7 ba 5,110 sqft Built 2000 Lot 11,784 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 | $103,919 | $80,856 | $184,775 | $17,618 |
| 2024 | $103,919 | $80,856 | $184,775 | $18,099 |
| 2023 | $121,391 | $88,239 | $209,630 | $17,785 |
| 2022 | $93,019 | $70,695 | $163,714 | $15,203 |
| 2021 | $95,696 | $72,730 | $168,426 | $14,497 |
| 2020 | $91,084 | $60,704 | $151,788 | $13,212 |
| 2019 | $91,084 | $60,704 | $151,788 | $13,010 |
| 2018 | $85,370 | $56,880 | $142,250 | $12,333 |
| 2017 | $85,370 | $56,880 | $142,250 | $11,947 |
| 2016 | $82,131 | $54,765 | $136,896 | $11,850 |
| 2015 | $82,131 | $54,765 | $136,896 | $11,221 |
| 2014 | $72,205 | $36,855 | $109,060 | $9,376 |
| 2013 | $72,205 | $36,855 | $109,060 | $9,169 |
| 2011 | $55,800 | $22,208 | $78,008 | $6,477 |
| 2010 | $55,800 | $22,208 | $78,008 | $6,510 |
| 2009 | $55,800 | $22,208 | $78,008 | $6,079 |
| 2008 | $48,950 | $29,850 | $78,800 | $5,795 |
Property facts
Year built
2000
Property type
single_family
Stories
—
Beds
5
Baths
7
Living area
5,110 sqft
Lot size
11,784 sqft
ZIP code
80304
City
Boulder
Street
Union Ave
Coordinates
40.05282, -105.28895
Comparable properties nearby
Frequently asked questions
When did 770 Union Ave last sell?
No public-record sale is on file for 770 Union Ave.
What is the current tax assessment for 770 Union Ave?
The most recent total assessment for 770 Union Ave (year 2025) is $184,775 with $17,618 in property tax.
When was 770 Union Ave built?
770 Union Ave was built in 2000.
How does 770 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 770 Union Ave?
770 Union Ave is a 5 bed, 7 bath, 5,110 sqft, 11,784 sqft lot single_family.
Is 770 Union Ave a flip candidate?
No — 770 Union Ave does not appear in our flips dataset.
Is 770 Union Ave a tax-appeal candidate?
No — 770 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