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  • Sustainable Homes × High Airtightness and High Insulation
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    Sustainable Homes × High Airtightness and High Insulation

    View project photos for Sustainable Homes and High Airtightness and High Insulation.

    Follow your intuition to save photos that catch your eye. Explore spatial designs to uncover implicit preferences you haven't yet put into words.

    Sustainable Homes

    A comprehensive collection of zero-energy and highly insulated custom residences. These homes harmonize comfort and environmental responsibility through innovative use of photovoltaic systems, ventilation strategies, and advanced insulation materials. Featuring eco-friendly housing concepts and case studies that incorporate modern, tasteful design aesthetics.

    High-Airtightness & High-Insulation House

    High-airtightness and high-insulation construction maintaining stable, comfortable room temperatures year-round. Introducing high insulation residential examples.

  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Kitchen｜Custom-built house
    A few steps down from the kitchen side stairs leads to a multipurpose counter for study or computer use.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Children's Room｜Custom-built house
    Child's room features an operable small window that provides a north view at eye level when a desk is placed
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    Passing through the corridor into the living room, a spacious, expansive one-room space unfolds
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Living Room｜Custom-built house
    PARALLEL｜Living Room
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Kitchen｜Custom-built house
    Duet House｜Kitchen
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Kitchen｜Custom-built house
    The expansive one‑room living space on the first floor.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    Miyanosawa House｜LDK
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    Polygonal exterior walls formed by combining angles derived from the surrounding site.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Storage｜Custom-built house
    Walk-in closet
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Approach｜Custom-built house
    Entrance porch with Todomatsu tongue-and-groove boarding
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    North elevation at dusk
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Lavatory｜Custom-built house
    Utility room that captures light from the stairwell
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Stairs｜Custom-built house
    House with Forest Windows｜Stairs
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Living Room｜Custom-built house
    House of the North Window｜Living Room
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    Duet House｜LDK
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    Duet House｜LDK
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    The polygonal exterior wall roof draws a soft line against the sky.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Courtyard｜Custom-built house
    Dry garden surfaced with large crushed stone centered on a feature tree
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Atrium｜Custom-built house
    Light-Gathering House｜Atrium
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Hobby room｜Custom-built house
    A few steps down from the first floor leads to a free space — a semi‑basement utilizing the foundation height.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    The large opening along the second-floor atrium frames nothing but the sky
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Kitchen｜Custom-built house
    The kitchen combines teak with stained ash
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Bedroom｜Custom-built house
    Cat door allowing free passage between individual rooms
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Hobby room｜Custom-built house
    House with Forest Windows｜Hobby room
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Corridor｜Custom-built house
    House with Forest Windows｜Corridor
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    PARALLEL｜Exterior
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Study｜Custom-built house
    Skip-floor mid-level mezzanine; it is also possible to climb to the second floor via the bouldering wall from here
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Living Room｜Custom-built house
    Living space with broad exposure to the northern landscape
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Entrance hall｜Custom-built house
    Duet House｜Entrance hall
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    House with Forest Windows｜Exterior
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Corridor｜Custom-built house
    Second-floor dusk view showing the north window with distant mountain ranges
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Atrium｜Custom-built house
    PARALLEL｜Atrium
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Stairs｜Custom-built house
    The stairwell is also a pathway for light and air
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Study｜Custom-built house
    View of the double-height void above the wood-burning stove from the mid-level study corner
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜LDK｜Custom-built house
    A one‑room space with exposed beams. The stairwell admits light and views through glass.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Corridor｜Custom-built house
    Duet House｜Corridor
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Dining Area｜Custom-built house
    PARALLEL｜Dining Area
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Kitchen｜Custom-built house
    Duet House｜Kitchen
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    House with Forest Windows｜Exterior
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Stairs｜Custom-built house
    PARALLEL｜Stairs
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • House with Forest Windows｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Soundproof room｜Custom-built house
    House with Forest Windows｜Soundproof room
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Living in the Forest
    Reading Room
    High Airtightness and High Insulation
    Wood Deck
    House with Doma
    Borrowed Scenery
    Outdoor Living
    ZEH
    Music Room
    Solar Panel
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Atrium｜Custom-built house
    Catwalk connecting the entire dwelling via the double-height void
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • PARALLEL｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    PARALLEL｜Exterior
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Natural Modern
    Capturing Light
    Energy-Saving House
    High Airtightness and High Insulation
    Cat Steps
    Living with Cats
    Exposed Beam
    Pet Space
    Catwalk
    Pet Door
  • House of the North Window｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Exterior｜Custom-built house
    Front elevation at dusk
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Wood-Burning Stove
    Bouldering Wall
    High Airtightness and High Insulation
    Borrowed Scenery
    Lattice
    Exposed Beam
    Skip Floor
  • Light-Gathering House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Corridor｜Custom-built house
    Curved atrium that gathers light
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Study corner
    Parallel Kitchen & Dining
    Large Opening
    Energy-Saving House
    High Airtightness and High Insulation
    Curved Wall
    Family closet
    Built-in Kitchen
    Outdoor Living
    Terrace
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Entrance hall｜Custom-built house
    Duet House｜Entrance hall
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • Duet House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Garage｜Custom-built house
    Duet House｜Garage
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    DIY
    Capturing Light
    High Airtightness and High Insulation
    Built-in Kitchen
    ZEH
    Built-in Garage
  • Miyanosawa House｜Sustainable Homes｜High-Airtightness & High-Insulation House｜Living Room｜Custom-built house
    When seated on the sofa, passersby are just out of view and only the greenery is reflected in the window.
    Architecture Firm:Yosuke Tomiya Architectural Design Co., Ltd.
    Yosuke Tomiya Architectural Design Co., Ltd.
    4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
    Two-Family House
    High Airtightness and High Insulation
    Semi-Basement
    Second-Floor Living
    Borrowed Scenery
    High Sidelight
    Exposed Beam
    Skip Floor
    Wood Texture
    Ground‑source heat pump
    Underfloor central heating
  • TOP
  • 〉Sustainable Homes
  • 〉High Airtightness and High Insulation
Tips for connecting what you love with your home
English
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日本語 (ja) 简体中文 (zh-hans) 繁體中文 (zh-hant) English (en)
  • #Rooftop Garden
  • #Wet-Engawa
  • #Sustainable Renovation
  • #Scandinavian Lighting
  • #Home with Margins
  • #Narrow House
  • #Gallery
  • #Local Timber
  • #Luxury home
  • #Simple Modern
  • #Fishing
  • #Luxury Modern
  • #Inner Garage
  • #Picture Window
  • #Contemporary
  • #Wood-Burning Stove
  • #Golf
  • #Office-House
  • #Iron Details
  • #Workspace
  • #Audio room
  • #Tsubo Garden
  • #Renovation
  • #Tile
  • #DIY
  • #Living in the Forest
  • #Mountain Cabin
  • #Flag-Shaped Lot
  • #Forever Home
  • #Charred Cedar
  • #Architect's Own House
  • #Family with Children
  • #Material Texture
  • #Green Wall
  • #Generational Home
  • #SOHO
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