440 Japonica WAY, Boulder, CO 80304
440 Japonica WAY, Boulder, CO 80304
440 Japonica WAY, Boulder, CO 80304
440 Japonica WAY, Boulder, CO 80304
440 Japonica WAY, Boulder, CO 80304
440 Japonica WAY, Boulder, CO 80304
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$8,500,000

$8,700,000

2.3%
Est.Price: ?

For more information regarding the value of a property, please contact us for a free consultation.

Est. payment /mo

5 Beds

5 Baths

4,943 SqFt


SOLD DATE : 07/02/2026

Key Details

Sold Price $8,500,000

Property Type Single Family Home

Sub Type Single Family Residence

Listing Status Sold

Purchase Type For Sale

Square Footage 4,943 sqft

Price per Sqft $1,719

Subdivision Northwest Boulder

MLS Listing ID IR1051957

Sold Date 07/02/26

Bedrooms 5

Full Baths 1

Half Baths 1

HOA Y/N No

Year Built 2023

Lot Size 0.293 Acres

Acres 0.29

Property Sub-Type Single Family Residence

Property Description

A striking blend of sustainability and sophistication; this home, designed by Annette and Dennis Martin in 2023, is tucked on a quiet cul-de-sac off one of Boulder's most coveted streets. This net-zero residence features advanced energy systems, including geothermal heating/cooling, radiant in-floor heat, a high-efficiency gas boiler and a 14.44kW solar array. A thoughtful layout connects open-concept living with vaulted ceilings, custom floating staircase, extensive millwork and designer lighting from Italy, Denmark, England, and the U.S. The main-floor primary suite offers a spa-like bath with onyx and white marble tile, double vanities, and a Kohler whirlpool tub. Entertain indoors or out with a chef's kitchen featuring Gaggenau and Sub-Zero appliances, a built-in Sedona grill, and a 10'x38' year-round saltwater pool. Expansive Sierra Pacific windows and doors frame views of the foothills while blending interior and exterior spaces. Savant smart home tech and Lutron lighting ensure effortless living at every turn. Easy upstairs conversion for 3 beds up. Already designed.

Location

State CO

County Boulder

Zoning RES

Interior

Interior Features Eat-in Kitchen, Five Piece Bath, Kitchen Island, Open Floorplan, Pantry, Vaulted Ceiling(s), Walk-In Closet(s)

Heating Heat Pump, Hot Water

Cooling Central Air

Flooring Wood

Fireplaces Type Living Room

Appliance Dishwasher, Double Oven, Refrigerator

Laundry In Unit

Exterior

Parking Features Attached, Garage

Garage Spaces 2.0

Pool Private

Utilities Available Cable Available, Electricity Available, Natural Gas Available

Waterfront Description Public

View Mountain(s)

Roof Type Composition,Membrane

Porch Patio

Private Pool No

Building

Lot Description Cul-De-Sac, Level, Sprinklers In Front

Story Two

Sewer Public Sewer

Water Public

Schools

School District Elementary: Boulder Valley Re 2, High: Boulder Valley Re 2

Others

Tax ID R0001873

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REColorado MLS
Listed bymilehimodern - Boulder

Nearby Locations

Colorado Mountain Living - Joe Alvine
Colorado Mountain Living - Joe Alvine

+1(970) 763-8683 | joe@coloradomtnliving.com

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Joe Alvine

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+1(970) 763-8683

joe@coloradomtnliving.com

101 S MAIN ST, BRECKENRIDGE, Colorado 80424, USA

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