Save
Ask
Tour
Hide
Share
$12,000,000
2 Days On Site

440 Japonica Way
Boulder, CO 80304

For Sale|Single Family Residence|Active
3
Beds
1
Full Bath
4
Partial Baths
4,943
SqFt
$2,428
/SqFt
2023
Built
Subdivision:
Northwest Boulder
County:
Boulder

Due to the health concerns created by Coronavirus we are offering personal 1-1 online video walkthough tours where possible.

440 Japonica Way440 Japonica Way440 Japonica Way440 Japonica Way
Save
Ask
Tour
Hide
Share

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.

Save
Ask
Tour
Hide
Share
Listing Snapshot
Price 
$12,000,000
Days On Site 
2 Days
Bedrooms 
3
Inside Area (SqFt) 
4,943 sqft
Total Baths 
5
Full Baths 
1
Partial Baths 
4
Lot Size 
0.29 Acres
Year Built 
2023
MLS® Number 
1031937
Status 
Active
Property Tax 
$29,529
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
Assessor
Friends & Family
Recent Activity
3 days agoListing updated with changes from the MLS®
3 days agoListing first seen on site
General Features
Acres 
0.29
Attached Garage 
Yes
Garage 
Yes
Garage Spaces 
2
Number Of Stories 
2
Parking 
OversizedAttached
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
SqFt Above 
3512
SqFt Below 
1732
SqFt Total 
3512
Stories 
Two
Utilities 
Natural Gas AvailableElectricity AvailableCable Available
Water Source 
Public
Zoning 
RES
Interior Features
Appliances 
Double OvenDishwasherRefrigerator
Basement 
Partially Finished
Cooling 
Central Air
Fireplace 
Yes
Fireplace Features 
Living Room
Heating 
Hot WaterHeat PumpZoned
Interior 
Eat-in KitchenOpen FloorplanPantryWalk-In Closet(s)Kitchen IslandBeamed CeilingsHigh CeilingsCathedral Ceiling(s)
Spa 
Yes
Window Features 
Window CoveringsWood FramesDouble Pane Windows
Bedroom 2 
Dimensions - 13x16Level - UpperArea - 208Description - Wood Floor
Bedroom 3 
Dimensions - 15x17Level - BasementArea - 255Description - Concrete Floor
Dining Room 
Dimensions - 11x21Level - MainArea - 231Description - Wood Floor
Kitchen 
Dimensions - 11x21Level - MainArea - 231Description - Wood Floor
Living Room 
Dimensions - 20x21Level - MainArea - 420Description - Wood Floor
Master Bathroom 
Description - Luxury Features Primary Bath,5 Piece Primary Bath
Master Bedroom 
Dimensions - 17x17Level - MainArea - 289Description - Wood Floor
RecRoom 
Dimensions - 29x16Level - BasementDescription - Concrete
Study 
Dimensions - 17x25Level - Upper
Save
Ask
Tour
Hide
Share
Exterior Features
Lot Features 
Cul-De-SacLevel
Patio And Porch 
Patio
Pool Features 
Private
Private Pool 
Yes
Road Frontage 
City Street
Roof 
CompositionRubber
Spa 
Yes
Windows/Doors 
Window CoveringsWood FramesDouble Pane Windows
Community Features
Financing Terms Available 
CashConventional
MLS Area 
Boulder
Roads 
PavedAsphalt
School District 
Boulder Valley Dist RE2
Schools
School District
Boulder Valley Dist RE2
Elementary School
Foothill
Middle School
Centennial
High School
Boulder
Listing courtesy of milehimodern - Boulder


Compensation information displayed on listing details is only applicable to other participants and subscribers of the source MLS.

Information source: Information and Real Estate Services, LLC. Information deemed reliable but not guaranteed by the MLS. Listing information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Provided for limited non-commercial use only under IRES Rules © Copyright IRES. Digital Millenium Copyright Act

Last checked 2025-04-26 08:15 AM MST.

Neighborhood & Commute
Source: Walkscore
Community information and market data Powered by ATTOM Data Solutions. Copyright ©2019 ATTOM Data Solutions. Information is deemed reliable but not guaranteed.
Save
Ask
Tour
Hide
Share