640 College Ave
Boulder, CO 80302
4 bd 4 ba 4,075 sqft Built 1991 Lot 8,350 sqft single_family
Most recent sale
$2,375,000
Apr 2, 2024
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Aug 2, 2024 | Listing removed | $2,499,000 | IRES |
| Aug 1, 2024 | Listing removed | $2,999,000 | IRES |
| Apr 2, 2024 | Sold | $2,375,000 | IRES |
| Mar 15, 2024 | Listing removed | — | REcolorado |
| Mar 9, 2024 | Listing removed | $2,499,000 | IRES |
| Mar 7, 2024 | Listed | $2,445,000 | REcolorado |
| Feb 29, 2024 | Listed | $2,445,000 | IRES |
| Oct 31, 2023 | Listing removed | $2,999,000 | IRES |
| Sep 1, 2023 | Listing removed | $2,799,000 | IRES |
| Aug 10, 2023 | Listing removed | $2,799,000 | IRES |
| Jun 7, 2023 | Price changed | $2,799,000 | IRES |
| Apr 12, 2023 | Price changed | $2,975,000 | IRES |
| Mar 15, 2023 | Listed | $3,100,000 | IRES |
| Dec 21, 2022 | Listing removed | — | Zumper |
| Nov 6, 2022 | Listed for rent | $7,100 | Zumper |
| Oct 21, 2022 | Listing removed | — | Zumper |
| Oct 20, 2022 | Listing removed | — | RentlinxUnits |
| Oct 12, 2022 | Price changed (rent) | $5,995 | Zumper |
| Oct 11, 2022 | Price changed (rent) | $5,995 | RentlinxUnits |
| Sep 29, 2022 | Price changed (rent) | $6,450 | RentlinxUnits |
| Sep 29, 2022 | Listed for rent | $6,450 | Zumper |
| Sep 20, 2022 | Price changed (rent) | $6,695 | RentlinxUnits |
| Aug 21, 2022 | Price changed (rent) | $6,995 | RentlinxUnits |
| Aug 16, 2022 | Listed for rent | $7,100 | RentlinxUnits |
| Jul 19, 2022 | Price changed | $2,999,000 | MLS #965600 |
| May 14, 2022 | Listed | $3,100,000 | MLS #965600 |
| Nov 15, 2000 | Sold | $900,000 | Public Record |
| Aug 17, 1992 | Sold | $359,900 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $97,406 | $98,538 | $195,944 | $18,683 |
| 2024 | $97,406 | $98,538 | $195,944 | $17,534 |
| 2023 | $102,168 | $101,029 | $203,197 | $17,229 |
| 2022 | $91,080 | $85,214 | $176,294 | $16,446 |
| 2021 | $93,701 | $87,666 | $181,367 | $15,611 |
| 2020 | $73,624 | $83,512 | $157,136 | $13,678 |
| 2019 | $73,624 | $83,512 | $157,136 | $13,469 |
| 2018 | $80,813 | $53,856 | $134,669 | $11,676 |
| 2017 | $80,813 | $53,856 | $134,669 | $11,310 |
| 2016 | $71,385 | $47,601 | $118,986 | $10,300 |
| 2015 | $71,385 | $47,601 | $118,986 | $9,754 |
| 2014 | $48,134 | $57,392 | $105,526 | $9,073 |
| 2013 | $48,134 | $57,392 | $105,526 | $8,873 |
| 2012 | $63,998 | $35,104 | $99,102 | $8,302 |
| 2011 | $63,998 | $35,104 | $99,102 | $8,229 |
| 2010 | $63,998 | $35,104 | $99,102 | $7,735 |
| 2009 | $63,998 | $35,104 | $99,102 | $6,995 |
| 2008 | $37,430 | $47,760 | $85,190 | $6,266 |
| 2007 | — | — | $85,188 | $6,051 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
4
Baths
4
Living area
4,075 sqft
Lot size
8,350 sqft
ZIP code
80302
City
Boulder
Street
College Ave
Coordinates
40.00700, -105.28624
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$8,558
Gross rental yield
4.32%
Implied cap rate
2.81%
Trend-extrapolated value
—
Frequently asked questions
When did 640 College Ave last sell?
640 College Ave most recently sold on Apr 2, 2024 for $2,375,000.
What is the current tax assessment for 640 College Ave?
The most recent total assessment for 640 College Ave (year 2025) is $195,944 with $18,683 in property tax.
How does 640 College Ave's assessment compare to its last sale price?
The current assessment is 91.7% below the last sale price of $2,375,000.
When was 640 College Ave built?
640 College Ave was built in 1991.
How does 640 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 640 College Ave?
640 College Ave is a 4 bed, 4 bath, 4,075 sqft, 8,350 sqft lot single_family.
Is 640 College Ave a flip candidate?
No — 640 College Ave does not appear in our flips dataset.
Is 640 College Ave a tax-appeal candidate?
No — 640 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