521 Iris Ave
Boulder, CO 80304
2 bd 1 ba 1,060 sqft Built 1955 Lot 7,197 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 | $6,899 | $62,089 | $68,988 | $6,577 |
| 2024 | $6,899 | $62,089 | $68,988 | $6,513 |
| 2023 | $7,779 | $70,014 | $77,793 | $6,399 |
| 2022 | $5,794 | $52,148 | $57,942 | $5,380 |
| 2021 | $5,961 | $53,649 | $59,610 | $5,130 |
| 2020 | $10,897 | $43,615 | $54,512 | $4,122 |
| 2019 | $10,897 | $43,615 | $54,512 | $4,059 |
| 2018 | $9,626 | $38,520 | $48,146 | $3,550 |
| 2017 | $9,626 | $38,520 | $48,146 | $3,438 |
| 2016 | $9,377 | $37,492 | $46,869 | $3,368 |
| 2015 | $9,377 | $37,492 | $46,869 | $3,189 |
| 2014 | $14,217 | $21,333 | $35,550 | $2,372 |
| 2013 | $14,217 | $21,333 | $35,550 | $2,319 |
| 2011 | $5,413 | $33,273 | $38,686 | $3,212 |
| 2010 | $5,413 | $33,273 | $38,686 | $3,322 |
| 2009 | $5,413 | $33,273 | $38,686 | $3,102 |
| 2008 | $9,140 | $33,830 | $42,970 | $2,574 |
Property facts
Year built
1955
Property type
single_family
Stories
1
Beds
2
Baths
1
Living area
1,060 sqft
Lot size
7,197 sqft
ZIP code
80304
City
Boulder
Street
Iris Ave
Coordinates
40.03617, -105.29021
Comparable properties nearby
Frequently asked questions
When did 521 Iris Ave last sell?
No public-record sale is on file for 521 Iris Ave.
What is the current tax assessment for 521 Iris Ave?
The most recent total assessment for 521 Iris Ave (year 2025) is $68,988 with $6,577 in property tax.
When was 521 Iris Ave built?
521 Iris Ave was built in 1955.
How does 521 Iris Ave compare to others on Iris Ave?
We track 8 other properties on Iris Ave. Browse the list under "Other properties on Iris Ave" to compare beds, baths, and sale history.
What are the property facts for 521 Iris Ave?
521 Iris Ave is a 2 bed, 1 bath, 1,060 sqft, 7,197 sqft lot single_family.
Is 521 Iris Ave a flip candidate?
No — 521 Iris Ave does not appear in our flips dataset.
Is 521 Iris Ave a tax-appeal candidate?
No — 521 Iris 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 Iris Ave