3877 15th St
Boulder, CO 80304
4 bd 4 ba 2,702 sqft Built 1981 Lot 7,405 sqft single_family
Most recent sale
$1,700,000
Jul 18, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Apr 24, 2026 | Sold | $1,535,000 | IRES |
| Mar 2, 2026 | Listed | $1,599,000 | IRES |
| Oct 1, 2025 | Listing removed | $1,639,000 | IRES |
| Apr 25, 2024 | Listed | $1,689,900 | IRES |
| Jul 19, 2022 | Listing removed | — | IRES |
| Jul 18, 2022 | Sold | $1,700,000 | MLS #966133 |
| Jun 20, 2022 | Price changed | $1,750,000 | MLS #966133 |
| May 19, 2022 | Listed | $1,795,000 | MLS #966133 |
| Dec 17, 2015 | Sold | $754,680 | Public Record |
| Aug 24, 2005 | Sold | $500,000 | Public Record |
| Apr 28, 1983 | Sold | $145,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $46,531 | $45,594 | $92,125 | $8,784 |
| 2024 | $46,531 | $45,594 | $92,125 | $8,720 |
| 2023 | $55,778 | $47,135 | $102,913 | $8,569 |
| 2022 | $38,079 | $38,023 | $76,102 | $7,067 |
| 2021 | $39,175 | $39,118 | $78,293 | $6,739 |
| 2020 | $30,502 | $34,964 | $65,466 | $5,698 |
| 2019 | $30,502 | $34,964 | $65,466 | $5,611 |
| 2018 | $34,402 | $25,848 | $60,250 | $5,224 |
| 2017 | $34,402 | $25,848 | $60,250 | $5,060 |
| 2016 | $32,111 | $24,358 | $56,469 | $4,888 |
| 2015 | $32,111 | $24,358 | $56,469 | $4,629 |
| 2014 | $25,838 | $21,253 | $47,091 | $4,049 |
| 2013 | $25,838 | $21,253 | $47,091 | $3,959 |
| 2012 | $21,970 | $18,865 | $40,835 | $3,421 |
| 2011 | $21,970 | $18,865 | $40,835 | $3,391 |
| 2010 | $21,970 | $18,865 | $40,835 | $3,982 |
| 2009 | $21,970 | $18,865 | $40,835 | $3,718 |
| 2008 | $25,900 | $23,480 | $49,380 | $3,632 |
| 2007 | — | — | $49,384 | $3,507 |
Property facts
Year built
1981
Property type
single_family
Stories
2
Beds
4
Baths
4
Living area
2,702 sqft
Lot size
7,405 sqft
ZIP code
80304
City
Boulder
Street
15th St
Coordinates
40.04534, -105.27903
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsInvestment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$5,674
Gross rental yield
4.01%
Implied cap rate
2.60%
Trend-extrapolated value
—
Frequently asked questions
When did 3877 15th St last sell?
3877 15th St most recently sold on Jul 18, 2022 for $1,700,000.
What is the current tax assessment for 3877 15th St?
The most recent total assessment for 3877 15th St (year 2025) is $92,125 with $8,784 in property tax.
How does 3877 15th St's assessment compare to its last sale price?
The current assessment is 94.6% below the last sale price of $1,700,000.
When was 3877 15th St built?
3877 15th St was built in 1981.
How does 3877 15th St compare to others on 15th St?
We track 8 other properties on 15th St. Browse the list under "Other properties on 15th St" to compare beds, baths, and sale history.
What are the property facts for 3877 15th St?
3877 15th St is a 4 bed, 4 bath, 2,702 sqft, 7,405 sqft lot single_family.
Is 3877 15th St a flip candidate?
No — 3877 15th St does not appear in our flips dataset.
Is 3877 15th St a tax-appeal candidate?
No — 3877 15th St 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 15th St