517 15th St
Boulder, CO 80302
6 bd 7 ba 6,911 sqft Built 2007 Lot 12,197 sqft single_family
Most recent sale
$3,775,000
Oct 18, 2021
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Mar 15, 2024 | Listing removed | — | REcolorado |
| Mar 7, 2024 | Listed | $6,500,000 | REcolorado |
| Feb 28, 2024 | Listing removed | $6,500,000 | IRES |
| Oct 10, 2023 | Listed | $6,500,000 | IRES |
| Sep 1, 2022 | Listing removed | $4,250,000 | IRES |
| Oct 18, 2021 | Sold | $3,775,000 | IRES |
| Jul 20, 2021 | Relisted | $3,950,000 | IRES |
| Jul 16, 2021 | Listing removed | $4,150,000 | IRES |
| Jun 2, 2021 | Listing removed | — | REcolorado |
| Jun 1, 2021 | Listed | $4,150,000 | IRES |
| Nov 17, 2020 | Listed | $4,250,000 | REcolorado |
| Nov 1, 2019 | Listing removed | $3,550,000 | IRES |
| Nov 6, 2017 | Listing removed | $3,550,000 | IRES |
| Jan 27, 2017 | Listed | $3,550,000 | IRES |
| Jun 30, 2016 | Sold | $3,495,000 | IRES |
| Feb 18, 2016 | Listing removed | $3,690,000 | IRES |
| Feb 17, 2016 | Listed | $3,495,000 | IRES |
| Jan 21, 2016 | Relisted | $3,690,000 | IRES |
| Jan 20, 2016 | Listing removed | $3,690,000 | IRES |
| Dec 31, 2015 | Price changed | $3,690,000 | IRES |
| Feb 2, 2015 | Listed | $3,950,000 | IRES |
| Apr 25, 2006 | Sold | $725,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $161,838 | $122,138 | $283,976 | $27,076 |
| 2024 | $161,838 | $122,138 | $283,976 | $30,148 |
| 2023 | $214,722 | $126,007 | $340,729 | $29,106 |
| 2022 | $171,700 | $106,314 | $278,014 | $25,817 |
| 2021 | $176,641 | $109,374 | $286,015 | $24,618 |
| 2020 | $148,699 | $103,246 | $251,945 | $21,930 |
| 2019 | $148,699 | $103,246 | $251,945 | $21,594 |
| 2018 | $142,236 | $94,824 | $237,060 | $20,553 |
| 2017 | $142,236 | $94,824 | $237,060 | $19,909 |
| 2016 | $105,374 | $70,287 | $175,661 | $15,206 |
| 2015 | $105,374 | $70,287 | $175,661 | $14,399 |
| 2014 | $77,276 | $92,177 | $169,453 | $14,568 |
| 2013 | $77,276 | $92,177 | $169,453 | $14,247 |
| 2011 | $95,520 | $63,680 | $159,200 | $13,219 |
| 2010 | $95,520 | $63,680 | $159,200 | $12,943 |
| 2009 | $95,520 | $63,680 | $159,200 | $12,086 |
| 2008 | $43,720 | $45,770 | $89,490 | $6,581 |
| 2007 | — | — | $55,664 | $3,954 |
Property facts
Year built
2007
Property type
single_family
Stories
2
Beds
6
Baths
7
Living area
6,911 sqft
Lot size
12,197 sqft
ZIP code
80302
City
Boulder
Street
15th St
Coordinates
39.99867, -105.27407
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
$14,513
Gross rental yield
4.61%
Implied cap rate
3.00%
Trend-extrapolated value
—
Frequently asked questions
When did 517 15th St last sell?
517 15th St most recently sold on Oct 18, 2021 for $3,775,000.
What is the current tax assessment for 517 15th St?
The most recent total assessment for 517 15th St (year 2025) is $283,976 with $27,076 in property tax.
How does 517 15th St's assessment compare to its last sale price?
The current assessment is 92.5% below the last sale price of $3,775,000.
When was 517 15th St built?
517 15th St was built in 2007.
How does 517 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 517 15th St?
517 15th St is a 6 bed, 7 bath, 6,911 sqft, 12,197 sqft lot single_family.
Is 517 15th St a flip candidate?
No — 517 15th St does not appear in our flips dataset.
Is 517 15th St a tax-appeal candidate?
No — 517 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
-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 15th St