428 Alpine Ave
Boulder, CO 80304
2 bd 1 ba 1,140 sqft Built 1910 Lot 5,777 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 | $6,861 | $61,746 | $68,607 | $5,945 |
| 2024 | $6,861 | $61,746 | $68,607 | $5,917 |
| 2023 | $7,771 | $69,942 | $77,713 | $5,814 |
| 2022 | $5,755 | $51,791 | $57,546 | $4,698 |
| 2021 | $5,920 | $53,282 | $59,202 | $4,480 |
| 2020 | $10,947 | $43,830 | $54,777 | $4,145 |
| 2019 | $10,947 | $43,830 | $54,777 | $4,082 |
| 2018 | $9,598 | $38,376 | $47,974 | $3,535 |
| 2017 | $9,598 | $38,376 | $47,974 | $3,424 |
| 2016 | $9,250 | $37,014 | $46,264 | $3,315 |
| 2015 | $9,250 | $37,014 | $46,264 | $3,139 |
| 2014 | $9,552 | $28,099 | $37,651 | $2,552 |
| 2013 | $9,552 | $28,099 | $37,651 | $2,496 |
| 2011 | $9,870 | $28,099 | $37,969 | $3,152 |
| 2010 | $9,870 | $28,099 | $37,969 | $3,377 |
| 2009 | $9,870 | $28,099 | $37,969 | $3,153 |
| 2008 | $6,770 | $32,240 | $39,010 | $2,283 |
Property facts
Year built
1910
Property type
single_family
Stories
—
Beds
2
Baths
1
Living area
1,140 sqft
Lot size
5,777 sqft
ZIP code
80304
City
Boulder
Street
Alpine Ave
Coordinates
40.02530, -105.29078
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 428 Alpine Ave last sell?
No public-record sale is on file for 428 Alpine Ave.
What is the current tax assessment for 428 Alpine Ave?
The most recent total assessment for 428 Alpine Ave (year 2025) is $68,607 with $5,945 in property tax.
When was 428 Alpine Ave built?
428 Alpine Ave was built in 1910.
How does 428 Alpine Ave compare to others on Alpine Ave?
We track 8 other properties on Alpine Ave. Browse the list under "Other properties on Alpine Ave" to compare beds, baths, and sale history.
What are the property facts for 428 Alpine Ave?
428 Alpine Ave is a 2 bed, 1 bath, 1,140 sqft, 5,777 sqft lot single_family.
Is 428 Alpine Ave a flip candidate?
No — 428 Alpine Ave does not appear in our flips dataset.
Is 428 Alpine Ave a tax-appeal candidate?
No — 428 Alpine 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
+5.1%
Implied 1-yr
+20.2%
2026 Q3
$2.3M
2026 Q4
$2.39M
ZIP 80304 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Alpine Ave