4445 Grinnell Ave
Boulder, CO 80305
4 bd 2 ba 1,850 sqft Built 1965 Lot 7,405 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 | $21,225 | $54,650 | $75,875 | $7,234 |
| 2024 | $21,225 | $54,650 | $75,875 | $7,122 |
| 2023 | $22,016 | $62,712 | $84,728 | $6,998 |
| 2022 | $11,391 | $46,134 | $57,525 | $5,342 |
| 2021 | $11,719 | $47,462 | $59,181 | $5,094 |
| 2020 | $10,718 | $42,900 | $53,618 | $4,667 |
| 2019 | $10,718 | $42,900 | $53,618 | $4,595 |
| 2018 | $20,261 | $30,816 | $51,077 | $4,428 |
| 2017 | $20,261 | $30,816 | $51,077 | $4,289 |
| 2016 | $18,937 | $24,835 | $43,772 | $3,789 |
| 2015 | $18,937 | $24,835 | $43,772 | $3,588 |
| 2014 | $20,983 | $17,273 | $38,256 | $3,289 |
| 2013 | $20,983 | $17,273 | $38,256 | $3,216 |
| 2011 | $21,094 | $16,238 | $37,332 | $3,099 |
| 2010 | $21,094 | $16,238 | $37,332 | $3,040 |
| 2009 | $21,094 | $16,238 | $37,332 | $2,839 |
| 2008 | $12,040 | $20,700 | $32,740 | $2,408 |
Property facts
Year built
1965
Property type
single_family
Stories
1
Beds
4
Baths
2
Living area
1,850 sqft
Lot size
7,405 sqft
ZIP code
80305
City
Boulder
Street
Grinnell Ave
Coordinates
39.97715, -105.24440
Comparable properties nearby
Frequently asked questions
When did 4445 Grinnell Ave last sell?
No public-record sale is on file for 4445 Grinnell Ave.
What is the current tax assessment for 4445 Grinnell Ave?
The most recent total assessment for 4445 Grinnell Ave (year 2025) is $75,875 with $7,234 in property tax.
When was 4445 Grinnell Ave built?
4445 Grinnell Ave was built in 1965.
How does 4445 Grinnell Ave compare to others on Grinnell Ave?
We track 3 other properties on Grinnell Ave. Browse the list under "Other properties on Grinnell Ave" to compare beds, baths, and sale history.
What are the property facts for 4445 Grinnell Ave?
4445 Grinnell Ave is a 4 bed, 2 bath, 1,850 sqft, 7,405 sqft lot single_family.
Is 4445 Grinnell Ave a flip candidate?
No — 4445 Grinnell Ave does not appear in our flips dataset.
Is 4445 Grinnell Ave a tax-appeal candidate?
No — 4445 Grinnell 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
-0.2%
Implied 1-yr
-0.8%
2026 Q3
$1.2M
2026 Q4
$1.2M
ZIP 80305 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Grinnell Ave