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Sold for $8,500,000

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Sold for $8,500,000

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440 Japonica Way Boulder, CO 80304

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0Saves

$8,500,000

CLOSED

Beds

Baths

Sqft

4,943

Acres

0.29

Year

2023

Close Date

Jul 2, 2026

Property Type

Residential

Sub Type

Single Family Residence

Per Square Foot

$1,720

Date Listed

Feb 19, 2026

Description of 440 Japonica Way, Boulder, CO 80304

Listing details for 440 Japonica Way, Boulder, CO 80304 : 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.

Listing Updated : 07-06-2026 at 6:15 PM MDT

Property Details

Property Overview

Listing Price

$8,700,000

MLS #ID

RECIR1051957

Close Price

$8,500,000

Close Date

Jul 2, 2026

Bedrooms

Bathrooms

Square Footage

4,943

Acres

0.29

Year

2023

Days on Site

196 Days

Property Type

Residential

Property Sub Type

Single-Family

Price per Sq Ft

$1,720

Date Listed

Feb 19, 2026

Location

Street Address

440 Japonica Way

City

Boulder

State

Colorado

ZIP Code

80304

County

Boulder

Neighborhood / Subdivision

Northwest Boulder

Schools

Elementary School

Middle School

High School

School District

Home Specification

Bedrooms

Bathrooms

1 Full / 1 Half

Total Square Feet

4,943

Construction / Architecture

Year Built

2023

Construction Materials

Brick and Frame

Roof

Composition and Membrane

New Construction

Price per Sq Ft

$1,720

Lot Features

Cul-De-Sac, Level and Sprinklers In Front

Lot Size (Acres)

0.29

Interior Details

Interior Features

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

Appliances

Dishwasher, Double Oven and Refrigerator

Flooring

Wood

Fireplace

Fireplace Features

Living Room

Heating

Heat Pump and Hot Water

Cooling

Central Air

Exterior Details

Garage

Garage Spaces

Parking Features

Oversized

Patio & Porch Features

Patio

Fencing

None

Water Source

Public

Sewer

Public Sewer

Taxes, HOA & Financing

HOA Fee Includes

None

Room Details

Room Type	Level	Dimensions
Bathroom Full	Main	—
Living Room	Main	20 × 21
Bedroom	Basement	15 × 17
Bedroom	Upper	13 × 16
Kitchen	Main	11 × 21
Dining Room	Main	11 × 21
Bedroom	Upper	13 × 16
Bedroom	Main	17 × 17
Bathroom Three Quarter	Basement	—
Bathroom Three Quarter	Upper	—
Bathroom Three Quarter	Upper	—
Bathroom Half	Main	—
Game Room	Basement	29 × 16
Bedroom	Upper	13 × 16

Listing Provided By

R Tim Goodacre, 3038761073, milehimodern - Boulder

Properties displayed may be listed or sold by various participants in the MLS

Source

recolorado as distributed by MLS GRID, MLS#: RECIR1051957

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Property History

DateEventPrice

7/2/2026

Sold

$8,700,000 0%

$1,760/sqft

Source:

recolorado #RECIR1051957

6/6/2026

Status change

$8,700,000 -8.4%

$1,760/sqft

Source:

recolorado #RECIR1051957

2/19/2026

Listed for sale

$9,500,000 -4.5%

$1,922/sqft

Source:

recolorado #RECIR1051957

1/14/2026

Listing removed

$9,950,000 0%

$2,013/sqft

Source:

recolorado #RECIR1031937

4/22/2025

Listed for sale

$9,950,000

$2,013/sqft

Source:

recolorado #RECIR1031937

Location of 440 Japonica Way, Boulder, CO 80304

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Comments

Homes Similar to 440 Japonica Way, Boulder, CO 80304

Sold Homes Similar to 440 Japonica Way, Boulder, CO 80304

Sold on Aug 7, 2024

$7,700,000

Closed

Beds

Baths

7848

Sqft

5.34

Acres

855 Timber Ln, Boulder, CO 80304

MLS#: RECIR1006753

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Source Logo
Based on information submitted to the MLS GRID as of 2026-07-07. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.