855 Circle Drive
Boulder, CO, 80302 $ 5,750,000
Bedrooms4 Baths3.1 Sq 3,791 Monthly Estimate*
$ 35,404
Listed by Compass - Boulder
for $5,750,000 with 4 bedrooms and 3 full baths, 1 half bath. This 3,791 square foot home was built in 1958 on a lot size of 0.33.
Some homes offer a view. 855 Circle Drive offers an escape - with the Flatirons and foothills as your backdrop. Tucked into a private hillside just below Flagstaff Mountain, 855 Circle Dr sits in a world of its own, sheltered by mature trees, wrapped in stillness, yet moments from the heart of Boulder. The Flatirons rise directly in front of you. Trailheads begin nearby. And the sounds of the city simply don't reach you here. This is the setting that renowned Boulder architect Charles Haertling chose for his own personal residence - and that provenance speaks for itself. The home's clean modern exterior gives way to an interior of remarkable warmth, with tongue-and-groove ceilings, exposed beams, hardwood floors, custom woodwork, and skylights that flood the space with natural light throughout the day. Every window is a frame for the landscape beyond. On the upper level, an open-concept living, dining, and kitchen layout flows toward large sliding glass doors that open onto a south-facing terrace oriented directly at the Flatirons. The primary suite offers Flatiron views, patio access, a five-piece bath, and walk-in closet. A dedicated office and a deck off the kitchen overlooking the city complete the level. The outdoor spaces are exceptional: stone patios, terraced gardens, and meandering mature landscaping including cherry and apple trees that bloom in spring, offer shade in summer, and glow in autumn. The grounds feel like a private nature preserve, designed for quiet mornings & golden-hour evenings. Whether you're entertaining on the terrace, setting out on a trail at dawn, or simply embracing the stillness, the outdoor life here is extraordinary. 855 Circle Drive requires nothing of you except to arrive and settle in. With 3,791 sqft across two well-conceived levels, including a spacious family room, three additional bedrooms, a guest suite, and flexible work-from-home spaces, the home functions beautifully for everyday living and generous hosting alike.
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FeaturesInteriorInterior Amenities Eat-in Kitchen Open Floorplan Radon Mitigation System Walk-In Closet(s)
Basement None
Flooring Tile Wood
Basement (Y/N) N
Window Features Double Pane Windows Skylight(s) Window Coverings
Above Grade Finished Area 3791
Half Baths 1
3/4 Baths 2
Total Bedrooms 4
Below Grade Finished Area 0
Main Level Bedrooms 3
Main Level Bathrooms 3
Total Baths 4
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GeneralSewer Public Sewer
Heating Baseboard
Cooling Air Conditioning-Room
Utilities Electricity Available Natural Gas Available
Possession Closing/DOD
Roof Membrane
Appliances Dishwasher Disposal Double Oven Dryer Microwave Oven Refrigerator Washer
Zoning SFR
Garage Spaces 2
Patio/Porch Features Patio
Security Features Smoke Detector(s)
Construction Materials Brick Stucco
Exclusions Owner's Personal Property
Year Built 1958
View City Mountain(s) Plains
Levels Two
Property Subtype Single Family Residence
Tax Year 2025
Ownership Individual
County Boulder
Property Type Residential
HOA N
Attached Garage Y
Subdivision Name Flatirons Park
Facing Direction East
Possible Use Residential
Full Baths 1
Status Active
High School Boulder
City Boulder
High School District Boulder Valley RE 2
Lot Size Square Feet 14209
Listing Terms Cash Conventional
Elementary School Flatirons
Tax Annual Amount 20038
Middle/Junior High School Manhattan
Concessions No
Virtual Tour https://youtu.be/f73vZ7oVnKE
Structure Type House
Standard Status Active
Occupancy Type Owner
Elementary School District Boulder Valley RE 2
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ExteriorExterior Amenities Balcony
Vegetation Wooded
Water Source Public
Total Parking 2
Building Area Total 3791
Lot Size Acres 0.33
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* Excluded FeaturesAffordability Calculator
- Monthly Principal & Interest
- $35,404
- Monthly Property Taxes
- $1,670
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Boulder, CO
Average List Price $2,518,366
Percent of Sale Price 56%
About Boulder, CO 102,151 Population
6% Since 2002
$ 65,436 Median Income
31.88 Median Age
18% Households with Children
Trends Information provided by ATTOM Data Solutions.
1956937 Elementary School
1957357 Middle School
Boulder High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 4/30/2026 | $5,750,000 | | Listed Price |