ON design partners: house with eaves and an attic ON design partners: house with eaves and an attic
jun 06, 2011

ON design partners: house with eaves and an attic

‘house with eaves and an attic’ by ON design partners in tokyo, japan all images courtesy ON design partners photographer: koichi torimura




japanese architects ON design partners (osamu nishida, takanori ineyama, rie yanai) have completed ‘house with eaves and an attic’, a three-level dwelling on a hilly site in in tokyo, japan. standing slim and tall, the design features an exaggerated pitched roof that is translated to the form of the interior space.

exterior view of roof form




located within a cluster of trees on the edge of a cliff, the house is built on the only flat part of the site which measures approximately 4.5 m by 16 m. the design leaves the trees untouched and even incorporates their presence into the structure by letting them grow through the over-extruded roof form. singular and solid, the roof is clad in a ‘doll house’-like fashion with grey shingles. puncturing the surface are a series of picture windows of different sizes which lend the house a playful identity. the extended eaves provides shade as well as controls views from the exterior.

(left) entrance (right) interior view




accommodating extra vertical space, the ‘attic’ level hosts the main communal programs such as the kitchen and living room. the windows provide views of the trees, inviting the elements of the outside inwards. in a similar manner, the ground floor opens up to the cliff side of the site with floor-to-ceiling glazing. the middle level is kept windowless and provides a generous amount of space for storage.  

from kitchen

garage room


living room at night


sectional sketch



project info:


site area: 182.25 m2 building area: 58.18 m2 total floor area: 84.84 m2 storeys: 2 structure: wood

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