Set on iconic Juniper Street in a serene, park-like setting, 660 Juniper Ave offers a rare blend of lifestyle, flexibility, and unobstructed Flatiron views. Just moments from the trails of Mount Sanitas, this North Boulder property places you at the intersection of nature and convenience.
The main residence features 4 bedrooms and 3.5 bathrooms, thoughtfully designed with light-filled living spaces and a comfortable, functional layout. Expansive windows capture sweeping mountain views, creating a seamless connection between indoor living and Boulder’s natural surroundings.
A standout feature is the fully permitted 1 bed / 1 bath ADU, offering exceptional flexibility for guests, multigenerational living, or income potential.
This property delivers a rare opportunity to own on one of Boulder’s most desirable streets—where trail access, views, and versatility come together effortlessly.
For sale by owner
$5,200,000
660 Juniper Ave #A, Boulder, CO 80304
5beds
5,156sqft
SingleFamily
Built in 1966
0.34 Acres Lot
$-- Zestimate®
$1,009/sqft
$-- HOA
What's special
Serene park-like settingSweeping mountain viewsUnobstructed flatiron viewsExpansive windowsComfortable functional layoutLight-filled living spaces
- 94 days |
- 372 |
- 29 |
Listed by:
Property Owner (650) 426-8480
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Heating
- Radiant, Gas
Cooling
- Central
Appliances
- Included: Dishwasher, Dryer, Freezer, Garbage disposal, Microwave, Range / Oven, Refrigerator, Washer
Features
- Basement: None
- Has fireplace: Yes
Interior area
- Total interior livable area: 5,156 sqft
Property
Parking
- Total spaces: 6
- Parking features: Carport, Garage - Detached, Off-street
Features
- Exterior features: Shingle, Stone, Wood
- Has view: Yes
- View description: Mountain
Lot
- Size: 0.34 Acres
Details
- Parcel number: 146124133001
Construction
Type & style
- Home type: SingleFamily
Materials
- masonry
- Roof: Asphalt
Condition
- New construction: No
- Year built: 1966
Community & HOA
Location
- Region: Boulder
Financial & listing details
- Price per square foot: $1,009/sqft
- Tax assessed value: $3,106,500
- Annual tax amount: $18,679
- Date on market: 4/12/2026
Estimated market value
Not available
Estimated sales range
Not available
$7,793/mo
Price history
| Date | Event | Price |
|---|---|---|
| 4/12/2026 | Listed for sale | $5,200,000+420%$1,009/sqft |
Source: Owner Report a problem | ||
| 6/6/2008 | Sold | $1,000,002$194/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $18,679 +1.8% | $194,156 -10.2% |
| 2024 | $18,355 +27.6% | $216,229 -1% |
| 2023 | $14,380 +4.9% | $218,326 +41% |
| 2022 | $13,713 +20.4% | $154,854 -2.8% |
| 2021 | $11,391 | $159,309 +21.7% |
| 2020 | $11,391 +51.6% | $130,860 |
| 2019 | $7,512 | $130,860 +51% |
| 2018 | $7,512 | $86,638 -26.9% |
| 2017 | $7,512 +4.4% | $118,541 +42.7% |
| 2016 | $7,193 +5.6% | $83,094 +26% |
| 2015 | $6,811 +22.8% | $65,965 |
| 2014 | $5,546 -11% | $65,965 |
| 2013 | $6,235 +0.9% | $65,965 -11.4% |
| 2012 | $6,180 +1.4% | $74,426 |
| 2011 | $6,093 +7.1% | -- |
| 2010 | $5,690 +24.2% | $75,390 |
| 2009 | $4,583 +3.5% | $75,390 -6.7% |
| 2008 | $4,427 +9.8% | $80,780 |
| 2007 | $4,032 -9.3% | $80,780 +11.8% |
| 2006 | $4,444 +15.4% | $72,240 |
| 2005 | $3,851 +0.7% | $72,240 +14.6% |
| 2004 | $3,824 +9.7% | $63,020 |
| 2003 | $3,485 -6.8% | $63,020 +6.7% |
| 2002 | $3,737 | $59,090 -90.9% |
| 2001 | -- | $645,800 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.Climate risks
Neighborhood: Juniper - Kalmia
Nearby schools
GreatSchools rating
- 8/10Foothill Elementary SchoolGrades: K-5Distance: 0.2 mi
- 7/10Centennial Middle SchoolGrades: 6-8Distance: 1.2 mi
- 10/10Boulder High SchoolGrades: 9-12Distance: 1.8 mi
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A local agent can set up tours, give advice and negotiate with sellers.
A local lender can help you make sure your offer is ready when you are.
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