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For salePrice cut: $1M (7/3)
$11,000,000
4beds
5,244sqft

440 Japonica Way, Boulder, CO 80304

4beds
5,244sqft
Residential-detached, residential
Built in 2023
0.29 Acres
2 Attached garage spaces
$2,098 price/sqft

What's special

Views of the foothillsMain-floor primary suiteSpa-like bathOpen-concept livingYear-round saltwater poolVaulted ceilingsCustom floating staircase

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 ...

111 days
on Zillow
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1,624
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69
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Source: IRES,MLS#: 1031937MLS Logo
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Travel times

Kitchen

Family Room

Primary Bedroom

Zillow last checked: 7 hours ago

Listing updated: August 07, 2025 at 12:43pm

Listed by:

R Tim Goodacre 303-817-9300,

milehimodern - Boulder

Source: IRES,MLS#: 1031937MLS Logo

Facts & features

Interior

Bedrooms & bathrooms
  • Bedrooms: 4
  • Bathrooms: 5
  • Full bathrooms: 1
  • 3/4 bathrooms: 3
  • 1/2 bathrooms: 1
  • Main level bedrooms: 1
Primary bedroom
  • Area: 289
  • Dimensions: 17 x 17
Bedroom 2
  • Area: 208
  • Dimensions: 13 x 16
Bedroom 3
  • Area: 255
  • Dimensions: 15 x 17
Bedroom 4
  • Area: 425
  • Dimensions: 17 x 25
Dining room
  • Area: 231
  • Dimensions: 11 x 21
Kitchen
  • Area: 231
  • Dimensions: 11 x 21
Living room
  • Area: 420
  • Dimensions: 20 x 21
Heating
  • Hot Water, Heat Pump, Zoned
Cooling
  • Central Air
Appliances
  • Included: Double Oven, Dishwasher, Refrigerator
  • Laundry: Washer/Dryer Hookups
Features
  • Study Area, Eat-in Kitchen, Cathedral/Vaulted Ceilings, Open Floorplan, Pantry, Walk-In Closet(s), Kitchen Island, High Ceilings, Beamed Ceilings, Open Floor Plan, Walk-in Closet, 9ft+ Ceilings
  • Flooring: Wood, Wood Floors
  • Windows: Window Coverings, Wood Frames, Double Pane Windows, Wood Windows
  • Basement: Partially Finished
  • Has fireplace: Yes
  • Fireplace features: Living Room
Interior area
  • Total structure area: 5,244
  • Total interior livable area: 5,244 sqft
  • Finished area above ground: 3,512
  • Finished area below ground: 1,732
Video & virtual tour

Property

Parking
  • Total spaces: 2
  • Parking features: Oversized
  • Attached garage spaces: 2
  • Details: Garage Type: Attached
Accessibility
  • Accessibility features: Level Lot, Main Floor Bath, Accessible Bedroom
Features
  • Levels: Two
  • Stories: 2
  • Patio & porch: Patio
  • Has private pool: Yes
  • Pool features: Private
  • Has spa: Yes
  • Has view: Yes
  • View description: Hills
Lot
  • Size: 0.29 Acres
  • Features: Curbs, Sidewalks, Lawn Sprinkler System, Cul-De-Sac, Level, Within City Limits
Details
  • Parcel number: R0001873
  • Zoning: RES
  • Special conditions: Private Owner

Construction

Type & style
  • Home type: SingleFamily
  • Property subtype: Residential-Detached, Residential
Materials
  • Wood/Frame, Brick
  • Roof: Composition,Rubber
Condition
  • Not New, Previously Owned
  • New construction: No
  • Year built: 2023

Utilities & green energy

  • Electric: Electric
  • Gas: Natural Gas
  • Sewer: City Sewer
  • Water: City Water, Boulder Water
  • Utilities for property: Natural Gas Available, Electricity Available, Cable Available
Green energy
  • Energy efficient items: Southern Exposure
  • Energy generation: Solar PV Owned

Community & HOA

Community
  • Subdivision: Northwest Boulder
HOA
  • Has HOA: No
Location
  • Region: Boulder

Financial & listing details

  • Price per square foot: $2,098/sqft
  • Tax assessed value: $5,069,939
  • Annual tax amount: $29,529
  • Date on market: 4/23/2025
  • Listing terms: Cash,Conventional
  • Exclusions: Seller's Personal Property And/Or Staging Items. Flat Files In Office.
  • Electric utility on property: Yes
  • Road surface type: Paved, Asphalt

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