Introducing Unison, a custom-built home example by Yosuke Tomiya Architectural Design Co., Ltd., a Architect / Design office in 4-8, 16-chome, 5-jo, Shinkawa, Kita-ku, Sapporo, Hokkaido
Night exterior viewed from the approach
The stratified interior composition visible through the two-storey continuous windows
Unison
View from the dining area toward the living room and mezzanine-level counter space
Layers of the folded, overlapping staircase
The living room is set lower than the dining area to create a sense of calm
Vertical space connecting to a diamond-shaped atrium formed by triangular geometry and a louvered floor
Upward view of the staircase
View of the mezzanine from the second-floor corridor
Corridor with a louvered floor that transmits light and atmosphere
Second-floor multipurpose hall and raised-platform space
Living room night view
Living room night view
Soundproof room for enjoying dance as a hobby
Steel Staircase
Skip Floor
Home Theater
Workspace
Simple Modern
Music Room
Lattice
danceRoom
audioRoom
homeTheater
miniBar
darts
Hiroshi Sakai (Great Tone Photographs)
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This home was planned together with the client starting from the land search, with close attention to the family's lifestyle.
The most notable feature is a soundproof room designed for multipurpose use such as dance, music, and home theater.
By locating the soundproof room on the building's northwest side and designing an L-shaped living-dining-kitchen (LDK) to capture natural light from the south and east, we created a space where hobbies and daily life coexist comfortably.
In addition, loft-like workspaces, skip floors, and a raised-platform second living area are distributed throughout as versatile places, allowing each family member to spend time with a comfortable sense of proximity.
This residence harmonizes hobbies and daily living, enriching everyday life. Use: Residential
Building area: 66.66 m² (20.16 tsubo)
Total floor area: 123.95 m² (37.49 tsubo)
Construction: New build / conventional timber-frame, two-storey
Contractor: Koyu Soken Co., Ltd.
Electrical: Abe Electric
Mechanical/Plumbing: Circle Kanko
Custom millwork: Takuryu Mokko-sha
Kitchen: Cleanup Sapporo Branch
Entrance door: Insulated wooden door (m.a.p)
Exterior windows/doors: uPVC sashes with triple glazing, both sides Low-E
Heating & hot water: Eco-Jozu (LPG gas) central heating; hydronic underfloor heating + hydronic panel heaters
Ventilation: Type 3
Thermal insulation: Foundation insulation (extruded polystyrene foam insulation, type 3-b, 100 mm); under-slab insulation (extruded polystyrene foam insulation, type 3-b, 50 mm); exterior wall insulation (cavity insulation — high-performance glass wool 16K 105 mm + additional insulation — high-performance glass wool 16K 105 mm); ceiling insulation (blown rock wool 25 kg/m³, 300 mm)
Lighting: LED lighting
Flooring: Solid oak plank flooring, stained + OSMO Floor Clear finish
Interior walls & ceilings: Vinyl wallpaper; stained/painted shina plywood
Exterior cladding: 0.35 mm color Galvalume steel — vertical flat seam, small-profile corrugated metal, seamless spandrel cladding
Roofing: PVC sheet waterproofing
The most notable feature is a soundproof room designed for multipurpose use such as dance, music, and home theater.
By locating the soundproof room on the building's northwest side and designing an L-shaped living-dining-kitchen (LDK) to capture natural light from the south and east, we created a space where hobbies and daily life coexist comfortably.
In addition, loft-like workspaces, skip floors, and a raised-platform second living area are distributed throughout as versatile places, allowing each family member to spend time with a comfortable sense of proximity.
This residence harmonizes hobbies and daily living, enriching everyday life. Use: Residential
Building area: 66.66 m² (20.16 tsubo)
Total floor area: 123.95 m² (37.49 tsubo)
Construction: New build / conventional timber-frame, two-storey
Contractor: Koyu Soken Co., Ltd.
Electrical: Abe Electric
Mechanical/Plumbing: Circle Kanko
Custom millwork: Takuryu Mokko-sha
Kitchen: Cleanup Sapporo Branch
Entrance door: Insulated wooden door (m.a.p)
Exterior windows/doors: uPVC sashes with triple glazing, both sides Low-E
Heating & hot water: Eco-Jozu (LPG gas) central heating; hydronic underfloor heating + hydronic panel heaters
Ventilation: Type 3
Thermal insulation: Foundation insulation (extruded polystyrene foam insulation, type 3-b, 100 mm); under-slab insulation (extruded polystyrene foam insulation, type 3-b, 50 mm); exterior wall insulation (cavity insulation — high-performance glass wool 16K 105 mm + additional insulation — high-performance glass wool 16K 105 mm); ceiling insulation (blown rock wool 25 kg/m³, 300 mm)
Lighting: LED lighting
Flooring: Solid oak plank flooring, stained + OSMO Floor Clear finish
Interior walls & ceilings: Vinyl wallpaper; stained/painted shina plywood
Exterior cladding: 0.35 mm color Galvalume steel — vertical flat seam, small-profile corrugated metal, seamless spandrel cladding
Roofing: PVC sheet waterproofing
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