Kenta Hirayama Architect & Associates Lifts Daily Life Above an Atelier on a Pine-Lined Tokyo Street

The street in front of this site in Kinuta, Setagaya Ward, is lined with large Japanese red pines and houses built decades ago. Plenty of new Tokyo houses would treat that context as a backdrop. KENTA HIRAYAMA ARCHITECT & ASSOCIATES treats it as the brief instead. The 145 m² detached house, completed in 2026, is meant to read as a natural part of a streetscape that existed long before it. That modesty starts with the simplest available form, a gable.

The more interesting decision is in the section. The drawings place an atelier, a bedroom and the bath on the ground floor, and put the kitchen, dining and living spaces upstairs under the pitched roof, next to two terraces that look into the tree canopies. The result is a house that shows little to the street and gives the most to the people who spend the most time in it. A strong team of collaborators supports this: Tetsuya Tanaka Structural Engineers, Katsuaki Kobayashi on interiors, furniture and luminaires, AURORA Inc. on lighting, and Hashiuchi Landscape Design outside.

A Gable That Takes Its Cue from the Street

Facing the street, the house is close to a child's drawing of a home: a gable clad in vertical grey metal panels, a dark garage door, a balcony with vertical balusters. That plainness is the point. Next to a tall pine and the overhead power lines of a typical Setagaya street, the house does not compete for attention. It lines up with its neighbors and leaves the trees as the most striking thing in view.

The slatted timber and cedar fence panels do the softening that the metal cladding cannot. At dusk the balcony glows behind the fence, and the house shows its domestic life only in layers and only at certain times of day. We think this is a mature way to approach a street with character: gain privacy through depth rather than by making the facade blank.

Thresholds of Gravel, Cedar and Deck

The side entrance is a short sequence: a concrete step, a gravel bed, stepping stones and a cedar fence, with a pine rising behind. It reads as landscape first and architecture second, which suits a project whose landscape designer is credited as a full collaborator. Inside, the first thing you see past the white entry wall is a flowering tree in a fenced yard. The house introduces its garden before it introduces any room.

On the long side, a timber deck runs alongside the metal-clad wall, and sliding glass doors open onto it in the shade of a slender tree. These small outdoor rooms matter in a dense Tokyo lot. They give the ground floor something to look at besides the neighbors.

Living Upstairs Under the Pitched Roof

Upstairs, the gable becomes a ceiling you can actually feel. The kitchen of pale oak cabinetry, a steel backsplash and an island sits under the white pitched ceiling, with a round oak dining table close by. Slatted timber panelling lines the wall beneath a large window. Putting the shared rooms here is the plan's key move: they get the full roof volume, the best daylight, and views into the pine canopy instead of the street.

The round table anchors the room. It is a small but deliberate choice in a rectangular plan, because a table with no head encourages gathering rather than ranking. The narrow window beside the shelving frames greenery the way a picture rail would, and the slim metal stair railing behind the table keeps the vertical connection visually light.

Softened Light and Quiet Furniture

Sheer horizontal blinds cover most of the larger windows, and they shape how the house feels more than any wall does. Daylight comes in as stripes and haze rather than direct glare, and the wood-framed sofa, low timber table and slim floor lamp sit inside that filtered glow. Katsuaki Kobayashi's role across interiors, furniture and luminaires shows in the consistency. Nothing looks bought separately to fill a gap.

The disc pendant over the dining table is a good example. It is a pale shade hung from thin black cables, with slender legs meeting a cylindrical canopy, and it is as much a piece of furniture as a light. Together with AURORA Inc.'s lighting design, it keeps the evening interior low and warm rather than evenly lit.

In a double-height white room, a timber mezzanine edge and a louvred rooflight cast a single patch of sun onto the floor. The loft study nook tucks a built-in desk under the sloped ceiling, a reminder that a roof pitch can hold useful space if you plan for it from the start.

Material Honesty Along the Corridors

The service spaces are where the material choices show most clearly. In one corridor, exposed timber ceiling joists run above hempcrete panels, with white built-in cabinets on both sides leading to the bathroom. Hempcrete is an unusual material in a Tokyo house, and leaving it visible rather than plastering over it tells you the architects want its texture to be part of daily life.

The pale ash staircase, with a flat steel handrail and cupboards built into its side, follows the same rule: every element earns a second use. The utility corridor, with its white vanity, open shelving and frosted glass door, is plain without feeling cheap.

Sleeping at Ground Level

Putting the bedroom downstairs reverses the usual Japanese suburban arrangement, and it works here because of the garden. Exposed timber ceiling beams sit above a low bed, and floor-to-ceiling glass doors open onto a sunlit wooden deck. A sliding panel beside the bed reveals a narrow window onto greenery. The room is shielded from the street but open to the planted edges the landscape design created.

An Atelier for Making

The ground-floor atelier is the house's working core. A steel-framed table sits beneath a wood-wool ceiling crossed by timber beams, and a long work table faces a white wall, with an espresso machine on a built-in counter. Wood-wool is an acoustic and practical choice, and it gives the room a rougher texture that sets it apart from the more refined living floor above.

A pegboard alcove holds hanging tools, a small 3D printer and filament spools above a built-in desk. Wall-hung shelves carry books, objects and a log offcut beside a wooden stool. This is a room meant to get messy, and the design accepts that. Giving the ground floor to work rather than to display is one of the most honest decisions in the project.

Plans and Drawings

The site plan shows a simple rectangular house with a gabled roof set between neighboring lots, with trees marked around it. The ground floor plan arranges the entrance, atelier, corridor, bedroom, bath and terrace around a central room. The upper floor gathers kitchen, pantry, dining and living around the stair, with two terraces and tree canopies drawn in below.

The two sections confirm the inversion. The bedroom and atelier sit low, and living, dining and an upper terrace room sit beneath the pitched roof, with a tree drawn next to the terrace as if it were part of the building.

The elevations show how restrained the exterior is: vertical cladding, a balcony railing, sliding glass doors and a clerestory window band along the long side. Every opening is placed for a specific view or a specific kind of light, not to make a composition.

Why This Project Matters

Tokyo's residential neighborhoods are being rebuilt one lot at a time, and each replacement either strengthens or wears away the character that made the street worth living on. House in Kinuta shows that a new house can take its cues from mature pines and older homes without imitating them. The gable, the fence and the muted cladding are ordinary tools, used with discipline.

Inside, the lesson concerns priorities. Living goes up into the roof and the trees, work and sleep go down to the garden, and a closely coordinated team of interior, lighting and landscape designers carries one sensibility from the pendant to the gravel bed. You do not need 300 m² to build a house that feels complete. You need a clear section and collaborators who agree on what to leave out.

House in Kinuta by KENTA HIRAYAMA ARCHITECT & ASSOCIATES. Location: Kinuta, Setagaya Ward, Tokyo, Japan. Area: 145 m². Year: 2026. Structural engineering: Tetsuya Tanaka Structural Engineers. Interior, furniture and luminaire design: Katsuaki Kobayashi. Lighting design: AURORA Inc. Landscape design: Hashiuchi Landscape Design. Contractor: Miki Kensetsu. Photographs by Kengaku Tomooki.

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