644 College Ave
Boulder, CO 80302
5 bd 5 ba 3,941 sqft Built 1991 Lot 13,939 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 | $48,019 | $99,725 | $147,744 | $14,087 |
| 2024 | $48,019 | $99,725 | $147,744 | $19,059 |
| 2023 | $88,051 | $132,499 | $220,550 | $18,728 |
| 2022 | $44,209 | $112,340 | $156,549 | $14,537 |
| 2021 | $45,481 | $115,573 | $161,054 | $13,862 |
| 2020 | $70,592 | $96,525 | $167,117 | $14,546 |
| 2019 | $70,592 | $96,525 | $167,117 | $14,324 |
| 2018 | $98,208 | $67,104 | $165,312 | $14,332 |
| 2017 | $98,208 | $67,104 | $165,312 | $13,884 |
| 2016 | $79,043 | $56,277 | $135,320 | $11,713 |
| 2015 | $79,043 | $56,277 | $135,320 | $11,092 |
| 2014 | $43,780 | $55,720 | $99,500 | $8,554 |
| 2013 | $43,780 | $55,720 | $99,500 | $8,366 |
| 2011 | $65,590 | $43,223 | $108,813 | $9,035 |
| 2010 | $65,590 | $43,223 | $108,813 | $7,591 |
| 2009 | $65,590 | $43,223 | $108,813 | $7,088 |
| 2008 | $37,810 | $57,710 | $95,520 | $7,025 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
5
Baths
5
Living area
3,941 sqft
Lot size
13,939 sqft
ZIP code
80302
City
Boulder
Street
College Ave
Coordinates
40.00701, -105.28608
Comparable properties nearby
Frequently asked questions
When did 644 College Ave last sell?
No public-record sale is on file for 644 College Ave.
What is the current tax assessment for 644 College Ave?
The most recent total assessment for 644 College Ave (year 2025) is $147,744 with $14,087 in property tax.
When was 644 College Ave built?
644 College Ave was built in 1991.
How does 644 College Ave compare to others on College Ave?
We track 8 other properties on College Ave. Browse the list under "Other properties on College Ave" to compare beds, baths, and sale history.
What are the property facts for 644 College Ave?
644 College Ave is a 5 bed, 5 bath, 3,941 sqft, 13,939 sqft lot single_family.
Is 644 College Ave a flip candidate?
No — 644 College Ave does not appear in our flips dataset.
Is 644 College Ave a tax-appeal candidate?
No — 644 College 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
-0.3%
Implied 1-yr
-1.2%
2026 Q3
$1.68M
2026 Q4
$1.67M
ZIP 80302 — Median Price History + Forecast
Explore nearby
Geography
Other properties on College Ave