Status: Active
440 Japonica Way
Boulder, CO 80304
10% Drop
$11,000,000
$9,950,000
------/mo*
CalculateA 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.
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- Bedrooms
- 4
- Baths
- 4.5
- House Size
- 4,943 sqft
- Year Built
- 2023
- Lot Size
- 0.29 ac
- School District
- Boulder Valley RE 2
Location
Market Insights
In the last 30 days, homes for sale in 80304, Boulder, CO were on the market for a median of 32 days and 5.26% of homes sold above list price.
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Start TourInterior Information
- appliances
- Dishwasher
- Double Oven
- Refrigerator
- cooling
- Central Air
- features
- Eat-in Kitchen
- Kitchen Island
- Open Floorplan
- Pantry
- Vaulted Ceiling(s)
- Walk-in Closet(s)
- fireplace
- Living Room
- flooring
- Wood
- heating
- Heat Pump
- Hot Water
- laundry features
- In Unit
- view
- Mountain(s)
- window features
- Double Pane Windows
- Window Coverings
Exterior Information
- patio and porch
- Patio
- pool
- Private
- road surface
- Paved
- roof
- Composition
- Membrane
Property Information
- construction
- Brick
- Frame
- lot
- Cul-de-sac
- Level
- Sprinklers In Front
- parking
- Oversized
- Attached
- sewer
- Public Sewer
- subdivision name
- Northwest Boulder
- utilities
- Cable Available
- Electricity Available
- Natural Gas Available
- water source
- Public
- Listed By R Tim Goodacre
- (303) 817-9300
- milehimodern - Boulder
- (303) 876-1073
- MLS IR1031937
Tax History
Date | Property Tax | Land | Additions | Tax Assessment |
|---|---|---|---|---|
| 2024 | $29,529 (+124.4%) | $2,028,400 | $3,041,539 | $5,069,939 (+117.7%) |
| 2023 | $13,158 (+47.6%) | $2,028,400 | $300,700 | $2,329,100 (+68.6%) |
| 2022 | $8,914 (0%) | $1,243,080 | $138,120 | $1,381,200 (0%) |
| 2021 | $8,914 (+4.9%) | $1,243,080 | $138,120 | $1,381,200 (+11.3%) |
| 2020 | $8,500 | $993,000 | $248,200 | $1,241,200 |
Tax data provied by Attom
Monthly Payments Calculator
Estimated Monthly Cost
$55,185
30 year fixed·6.9% interest rate
- Principal & Interest
- $52,425
- Property Taxes
- $2,461
- Home Insurance
- $300
- HOA Fees
- $0
*All calculations are estimates and provided for informational purposes only. Actual amounts may vary.
