alphaville: house folded
alphaville: house folded alphaville: house folded
oct 19, 2011

alphaville: house folded

‘house folded’ by alphaville in osaka, japan all images courtesy alphaville image © kai nakamura




kyoto-based architecture practice alphaville (kentaro takeguchi, asako yamamoto) has sent us images of ‘house folded’, a three-storey residence for a couple in osaka, japan. exploring methods of creating distinct and individual rooms that break away from a monotonous spatial experience, the design pleats the dividing walls to form optimal and dynamic volumes of space.

exterior view image © kai nakamura




standing on a slim site measuring 80 m2, the concrete structure translates its angular character to its facade, featuring asymmetrical slices in its facade. both the east and west facade is defined by a triangular slit that introduces light into the interior while providing an outdoor-space-like effect through  a system of floor-to-ceiling glazing. a sheltered parking space for a single car is also created by excising an irregular opening from the street.

(left) street view / image © kai nakamura (right) garage / image © kentaro takeguchi




the delineation of space utilizes the decomposition techniques of a voronoi diagram, equally dividing the shortest distance between points to create optimal spatial segments. the process, which required the full use of a 3D model, started from a parallelogram with a center wall that runs diagonally to define two spaces. this partition was then pivoted to run parallel to the site as it continued to the third level. the roof was pulled up to form a slant and a private outdoor terrace. structurally rational and dynamic, the result is a collection of flowing living spaces that seemingly shift and change from every vantage point.

view of garage and entrance image © kai nakamura

view of stairs from garage level (left) image © kai nakamura (right) image © kentaro takeguchi

view of living room on second level image © kai nakamura

stiars leading up to third level image © kai nakamura

view from living room image © kentaro takeguchi

(left) hallway image © kentaro takeguchi (right) access to terrace from bedroom image © kai nakamura

roof top terrace image © kai nakamura

within context image © kai nakamura

night view image © kai nakamura

folded scheme

site map

floor plan / level +1.0 m

floor plan / level +4.7 m

floor plan / level +6.3m

cross-sectional perspective

longitudinal section

light distribution diagram



project info:


site area: 79.93 m2 total floor area: 102.03 m2 storeys: 3 structure: reinforced concretestructural enginner: eisuke mitsuda / mitsuda structural consultants

  • someone finally brought this sort of an aesthetic down to a domestic and intimate scale in a thoroughly refined manner

    well done, except for that door off the garage – looks like a bitch to open/close

    dbkii says:
  • totally agree with dbkii for this bearable deconstructivist approach. About the door I had the same reserve, until I noticed it’s a sliding door, which make sense 🙂
    Otherwise, out of style consideration, another confirmation that our Japanese friends are the masters of micro space management. Kudos !

    thevzitor says:
  • I think I would feel constantly sea sick in this home. Too much slant in a small space for me. Even the photos make me feel a little queasy.
    To each their own I suppose!

    OmiOmiO says:
  • Fantastic…
    I just need to get over my lack of appreciation of exposed concrete.
    Get over it.

    Constructural Realism - Maui says:
  • love the stair

    LML says:
  • re: the door



    dbkii says:

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