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Back 440 Japonica Way
Off Market

440 Japonica Way

Boulder CO 80304

5
5
2
5244 sq. ft.
12784 sq. ft.
Single-Family
Last sold for $8,500,000
R Tim GoodacreR Tim Goodacre, last sold this property on 02 July 2026 after 132 days on market.

Overview

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.

Features

5 bedrooms
5 bathrooms
2 carspaces
2 garage spaces
5244 sq. ft. floor area
12784 sq. ft. lot size
Single-Family

Estimated Value

Based on this property and similar 5 bedroom single-family properties sold in Boulder over the last 12 months, the estimated median property value of 440 Japonica Way is $2.53m.

Median value
$2.53m
Estimated value range
$933.5k - $8.5m
Median days on market
60
Estimated value trend
-7%
decrease over the last 12 months
Average days on market is based on recent, comparable sales in Boulder. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 440 Japonica Way

2026
Sold
$8,500,000
02 Jul 2026 by R Tim Goodacre, of milehimodern - Boulder
2016
Sold
$1,355,000
27 Jun 2016 by Leyla Steele, of RE/MAX ALLIANCE ON WALNUT

Happy sellers in Boulder

~%

We have insufficient information to provide an overview of customer satisfaction for Boulder. Viewing the agent profiles, reviews and sales for Boulder can provide insights for this location.

Local market activity for 5 bedroom single-family properties in Boulder

In the last 12 months, 55 five-bedroom single-family properties similar to 440 Japonica Way, have been sold.

This represents a 23% increase in five-bedroom single-family properties sales when compared to the previous 12 months.

Nearby agents

Compare and contact these top performing agents who’ve delivered exception customer service for their clients in Boulder

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David Scott

David Scott is a recommended agent for Boulder.  They have 2 local sales and collected 2 local reviews across the last 12 months.

  •   5   (4 reviews)
  •  2 Reviews in Boulder
  •  2 Sales in Boulder
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Ryan Davis

Sellers who recommend Ryan Davis have praised them for being local expert, clear communication, reliable, responsive, detail-oriented, supportive, and well-prepared

  •   5   (69 reviews)
  •  1 Review in Boulder
  •  1 Sale in Boulder
View profile
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John Mcelveen

John Mcelveen is a recommended agent for Boulder.  They have 5 local sales across the last 12 months.

  •  5 Sales in Boulder
View profile
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Anne Wells

Anne Wells is a recommended agent for Boulder.  They have 5 local sales across the last 12 months.

  •   4.8   (6 reviews)
  •  5 Sales in Boulder
View profile
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