$9,500,000

640 S 68th Street, Boulder CO, 80303

Price per sqft$805.70

Built in1997

Property size11,791 sqft

Property typeResidential

Overview

Sold

Listed May 22, 2026

Updated 27h ago

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 & 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.

Additional information

MLS^® ID: IR1065942

Interior Features

Bedrooms: 5
Bathrooms: 7
Fireplace: Yes
Cooling: Yes
Heating: Yes
Basement: No

Exterior Features

Lot Size: 54.84 Acres

Other Property Details

Taxes: $19,008
Tax Frequency: Annually
Garage: Yes
View: Yes

Also listed on IRES

Listed by The Agency - Boulder, Marybeth Emerson, Listing Contact: 7203941997

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