SUWA architects + engineers: 533house

‘533house’ by SUWA architects + engineers in nagano, japan all images courtesy SUWA architects + engineers image © daisuke sanada

tokyo-based practice SUWA architects + engineers has shared with us images of ‘533house’, a single-storey private residence in a cold region of nagano prefecture, japan. seeking to create a living space which mostly operates through natural means, the design features an inclined southern facade that lets in sunlight during the winter while facilitating natural ventilation during the summer.

exterior view from garden image © daisuke sanada

situated on a corner plot with a generous front garden, the linear structure lies slim and low to the ground. the slightly sloped elevation faces inwards away from the street to ensure a level of privacy for the inhabitants. an extension of the interior space, a concrete slab running perpendicular to the layout serves as an outdoor terrace next to a set of large glass doors. during the hotter days of the year, an awning keeps this space shaded and cool.

street view image © daisuke sanada

south facade image © kaoru ijima

outdoor terrace image © kaoru ijima

subtly raised to result in an inclined roof, the interior is punctuated by sections of exposed ceiling with structural wooden columns. the south-facing windows draw in a large amount of sunlight which is then stored in the concrete foundation to keep the house warm during the evening. elevated windows which run along the north facade provide additional natural light and views of the immediate site.

(left) awning over outdoor terrace image © kaoru ijima (right) interior hallway image © daisuke sanada

interior view of living space image © kaoru ijima

view of outdoor terrace from kitchen image © daisuke sanada

sunlight intake through windows image © kaoru ijima

view from bedroom image © kaoru ijima

washroom image © kaoru ijima

site plan

floor plan

south elevation

section

project info:

site area: 463.12 m2 building area: 94.40 m2 total floor area: 92.16 m2 structure: wood frame

structural engineer: nawakenjim construction: maruwa kensetsu