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640 S 68th Street
Boulder, CO 80303
Aug 2026
SOLD
$9,500,000
Sold Price
5
Beds
7
Baths
5
Garage
11,791
Sqft
54.84
Acres
MLS# IR1065942
Cumulative Days on Market: 119 · Includes prior listings · Currently listed since 08/06/26 · Data provided by the MLS.

Property Description

55 acres in the heart of Boulder County - conservation protected, never to be subdivided, never to be replicated. 11, 791 finished square feet of award-winning architecture inspired by I.M. Pei and Frank Lloyd Wright, sitting on a landscape so vast and so private that the rest of Boulder County feels like a rumor. Inside, soaring cathedral ceilings with dramatic exposed beams and a wall of windows pull panoramic views right into your living room. A striking 360-degree glass fireplace anchors the living space, while custom cherry, walnut, and maple millwork from Kamtz Custom Cabinetry adds warmth and craftsmanship throughout. The primary suite is a private retreat with a spa bath, soaking tub, and dedicated spa room opening to a secluded courtyard. The garden level includes a spacious family room with fireplace and wet bar, a 144-bottle wine cellar, dedicated home theater with retractable screen and sound-dampened walls, four additional bedrooms - three en suite - and a 1, 000-square-foot climate-controlled flex space ideal for a workshop, studio, or collector's garage. Radiant in-floor heat, four AC zones, a whole-home Generac generator, heated three-car garage, and additional two-car garage round out a home that thinks of everything. Outside, a year-round pond, extensive limestone hardscaping, protected courtyard, and unobstructed mountain views define this estate. Featured in 5280, Luxe Magazine, and multiple design books, the home has earned Colorado Homes and Lifestyles Home of the Year along with multiple CARE and BAR awards. Located just 15 minutes from Rocky Mountain Metro's private jet centers and minutes from Boulder's biotech corridor, downtown, and CU. An optional adjoining 156-acre irrigated parcel with senior water rights is also available, bringing the total footprint to nearly 240 acres. This is not a house. This is a holding. The biggest, most private, most unrepeatable estate in Boulder County. And it's available right now.

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Property Highlights

Sold Price
9500000
Property Type
Residential
Property Sub Type
Single Family Residence
Architectural Style
Contemporary
Bedrooms
5
Total Bathrooms
7
Living Area
11,791
Price / Sqft
$806
Acres
54.84
Year Built
1997

Location

City/Township
Boulder
Direction Faces
West
View
City, Mountain(s), Plains
Subdivision
None
County
Boulder
Zoning
Estate Res

Property Details

Price
$9,500,000
Sold Price
9500000
Property Type
Residential
Property Sub Type
Single Family Residence

Building

Structure Type
House
Levels
Two
Total Area
11,791

Community

Local Schools

Elementary School
Douglass
Middle School
Platt
High School
Fairview
School District
Boulder Valley RE 2

Interior Features

Bedrooms and Bathrooms

Total Bathrooms
7
Bathrooms on Main Level
3
Full Bathrooms
4
1/2 Bathrooms
2
3/4 Bathrooms
1
Bedrooms
5
Bedrooms on Main Level
1

Rooms and Basement

Basement Features
None

Area and Spaces

Living Area
11,791
Above Grade Finished Area
11,791

Appliances

Appliances
Bar Fridge, Dishwasher, Disposal, Double Oven, Dryer, Oven, Refrigerator, Washer

Interior Features

Interior Features
Eat-in Kitchen, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar
Flooring
Tile, Wood
Laundry Features
In Unit
Window Features
Window Coverings
Security Features
Fire Alarm, Smoke Detector(s)
Fireplace Features
Family Room, Gas, Living Room, Other

Heating and Cooling

Heating Features
Radiant

Building Details

Construction

Architectural Style
Contemporary
Year Built
1997

Materials

Construction Materials
Stucco, Frame
Roof
Slate

Terms

Terms

Ownership
Individual
Exclusions
Sellers Personal Property and Staging Items, Water Rights Included
Special Terms
Cash, Conventional
Financing Options
Cash

Taxes

Tax

Tax (Annual)
$19,008

Heating, Cooling & Utilities

Cooling Features
Central Air

Utilities

Utilities
Electricity Available, Internet Access (Wired), Natural Gas Available
Water Source
Well

Lot

Acres
54.84
Lot Size Area Sq Ft
2,388,689
Lot Features
Level, Rolling Slope, Sprinklers In Front
Road Surface
Paved
Road Frontage
Public

Exterior Features

Exterior Features
Spa/Hot Tub
Patio And Porch Features
Deck, Patio
Fencing
Partial
For Horses
Yes
Horse Amenities
Pasture

Parking

Total Parking Spaces
5
Garage Capacity
5
Parking Features
Heated Garage, Oversized
Listed by The Agency - Boulder, 7203941997. Sold by milehimodern - Boulder
Listing Data last updated 09/18/2026 01:40 pm
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Property History

Today
Property information last updated
42 days ago
Status Active. This is the date the listing was placed on market.
43 days ago
Date of last price change
43 days ago
Date Sold
Cumulative Days on Market: 119 days (includes prior listings) · Currently listed since August 6, 2026. Data provided by the MLS.

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