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Front exterior of a new home in , Boulder, CO, highlighting curb appeal (Image 1).

Front exterior of a new home in , Boulder, CO, highlighting curb appeal (Image 2).

2D floor plan layout of this home in , Boulder, CO (Image 3).

2D floor plan layout of this home in , Boulder, CO (Image 4).

2D floor plan layout of this home in , Boulder, CO (Image 5).

Furnished interior view inside a new home in , Boulder (Image 6).

Furnished interior view inside a new home in , Boulder (Image 7).

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Front exterior of a new home in , Boulder, CO, highlighting curb appeal (Image 15).

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Move-in ready

4 bd
1.5 ba
4,943 sqft
2 stories
2-car

440 Japonica Wy, Boulder, CO 80304

$9,950,000

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Jome is featured in

Single-Family
Quick move-in
$2012.95/sqft
Northeast facing

Home 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.

Listed by R Tim Goodacre, tim@goodacreproperties.com
milehimodern - Boulder, MLS 1031937

Information last verified by Jome: Yesterday at 5:07 AM (January 11, 2026)

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Home details

*Pricing and availability are subject to change.

Property status:: Move-in ready
Neighborhood:: Juniper - Kalmia
Lot size (acres):: 0.29
Size:: 4,943 sqft
Stories:: 2

Beds:: 4
Baths:: 1.5
Garage spaces:: 2
Facing direction:: Northeast

Construction details

Roof:: Composition Roofing, Rubber Roofing

Home features & finishes

Construction Materials:: Wood FrameBrick
Cooling:: Central Air
Flooring:: Wood Flooring
Garage/Parking:: GarageAttached Garage
Home amenities:: Green Construction

Interior Features:: Ceiling-VaultedWalk-In ClosetPantryWindow Coverings
Kitchen:: DishwasherOvenRefrigeratorKitchen IslandDouble Oven
Laundry facilities:: DryerWasher
Property amenities:: Cul-de-sacPoolPatioFireplace
Rooms:: KitchenOffice/StudyFamily RoomOpen Concept Floorplan

Room details

Master Bedroom

Level: Main

Dimensions: 17 x 17 ft

Area: 289 sqft

Kitchen

Level: Main

Dimensions: 11 x 21 ft

Area: 231 sqft

Dining Room

Level: Main

Dimensions: 11 x 21 ft

Area: 231 sqft

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Utility information

Heating:: Heat Pump, Zoned Heating, Hot Water Heating
Utilities:: Electricity Available, Natural Gas Available, Cable Available

Neighborhood

Home address

440 Japonica Wy, Boulder, CO 80304

Neighborhood:: Juniper - Kalmia
City:: Boulder

County:: Boulder
Zip Code:: 80304

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Schools in Boulder Valley School District RE-2

Set in the vibrant Boulder, Colorado area, The home at Japonica Wy is part of the Boulder Valley School District RE-2. Students here are zoned to Foothill Elementary School, serving Elementary grades and located 0.4 mi from the neighborhood with a rating of 8. Casey Middle School educates Middle grades and sits roughly 1.1 mi away. Older students attend Tara Performing Arts High School, a private school supporting grades within about 1.4 mi.

Grades KG-05Public
foothill elementary school
0.4 mi
1001 hawthorn avenue
8/10
Grades PK-06Private
jarrow montessori school
0.7 mi
3900 orange court
na
Grades 06-12Private
watershed school
1.1 mi
1661 alpine ave
na
Grades 06-08Public
casey middle school
1.1 mi
1301 high street
5/10
Grades PK-PKPublic
mapleton early childhood center
1.2 mi
840 mapleton avenue
na
Grades KG-08Private
sacred heart of jesus school
1.2 mi
1317 mapleton avenue
na

GreatSchools’ Summary Rating calculation is based on 4 of the school’s themed ratings, including test scores, student/academic progress, college readiness, and equity. This information should only be used as a reference. Jome is not affiliated with GreatSchools and does not endorse or guarantee this information. Please reach out to schools directly to verify all information and enrollment eligibility. Data provided by GreatSchools.org © 2025

More homes in Boulder Valley School District RE-2

Places of interest

The area features a distribution of River locations that contribute to the regional dynamic. One notable example among the various listed places is Clear Creek, positioned about 19.8 mi away. These venues complement other types of destinations, ranging from recreational spots to commercial hubs, creating a balanced setting. This variety underscores the range of surrounding points of interest found throughout the vicinity.

Business Center

Google Boulder Campus2.2 mi

Ball Aerospace13.3 mi

DaVita HQ24.8 mi

River

St. Vrain Creek13.0 mi

Big Dry Creek17.6 mi

Ralston Creek18.1 mi

Education

Red Rocks Community College - Arvada Campus19.2 mi

Pima Medical Institute20.9 mi

Regis University22.0 mi

Lake

Sloan’s Lake23.7 mi

Military Base

Denver Federal Center24.2 mi

U.S. Mint Denver26.0 mi

Getting around

Assessing transportation access near The home at Japonica Wy involves looking at multiple connectivity ratings. The Walk Score of 15 (Car-Dependent) offers a baseline for understanding how walkable the immediate vicinity is. Biking potential is captured by a Bike Score of 59 (Bikeable), helping residents gauge whether cycling is a viable commute option. Transit service is also quantified by a score of 35 (Some Transit), supported by 3 routes. These scores are valuable tools for anticipating travel needs.

15 /100

Car-Dependent

59 /100

Bikeable

Transit score ®

35 /100

Some Transit

3 nearby routes: 3 bus, 0 rail, 0 other

Air quality

Noise level

Sound measurements in the area reflect a composite Noise Score of Active, providing a snapshot of the local environment. This value is categorized as Active based on methodology from Soundscore. The profile includes distinct ratings for traffic noise (Active), local sources (Calm), and airport noise (Calm). These figures summarize the sound levels near The home at Japonica Wy.

76

50Active100

Traffic noiseActive

Local sources noiseCalm

Airports noiseCalm

A Soundscore™ rating is a number between 50 (very loud) and 100 (very quiet) that tells you how loud a location is due to environmental noise.

Natural hazards risk

Environmental data plays a significant role in defining the setting of The home at Japonica Wy. To provide transparency, local conditions are measured against standardized scales, offering a level of detail that helps in understanding the physical characteristics of the location. This objective approach ensures that all environmental factors are treated with the same analytical rigor. The index for Lightning is currently recorded at 96.01, corresponding to a rating of Relatively High. This data point serves as one component of a comprehensive county-level environmental assessment, helping to paint a complete picture of the region's environmental identity.

Riverine flooding98.1

Relatively High

Wildfire96.7

Relatively Moderate

Earthquake76.0

Relatively Low

Heat wave0.0

No Rating

Strong wind88.0

Relatively High

Tornado94.0

Relatively High

Winter weather76.0

Relatively Moderate

Cold wave86.4

Relatively High

Drought30.2

Very Low

Hail89.8

Relatively Moderate

Lightning96.0

Relatively High

Ice storm73.8

Relatively Moderate

Landslide96.2

Relatively High

Avalanche69.2

Relatively Low

Provided by FEMA

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Listed by R Tim Goodacre, tim@goodacreproperties.com
milehimodern - Boulder, MLS 1031937

Information source: Information and Real Estate Services, LLC. Provided for limited non-commercial use only under IRES Rules © 2025 IRES, LLC. 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. Information deemed reliable but not guaranteed by the MLS. Compensation information displayed on listing details is only applicable to other participants and subscribers of the source MLS.

Last checked Jan 11, 11:20 pm