key operation inc.: house taishido
key operation inc.: house taishido key operation inc.: house taishido
jun 03, 2011

key operation inc.: house taishido

‘house taishido’ by key operation inc. in setagaya, tokyo, japan all images courtesy key operation inc. (above) image by key operation inc.

japanese studio key operation inc. (akira koyama) has sent us images of ‘house taishido’, a three-storey private dwelling in a dense residential area of tokyo, japan. flanked by neighbouring structures on three sides, the design manipulates its proportions both horizontally and vertically to achieve interior spaces that are both spacious and effective.

street facade image by key operation inc.

standing on a plot measuring 7 x 12m, the house is stepped back from the site line by 1.5m to set it apart from the public street and alleyway. the entrance and garage is read as an extruded volume with a square face while the rest of the structure – stepped back another two meters – features bold angles and an asymmetrically pitched roof to create a dynamic profile. singularly finished in mortar, the facade provides a prominent contrast with the carport, which is executed in a shade of bright red.

garage image by keizo shibasaki

the main communal spaces – kitchen, living, dining – are hosted on the second level, which is fronted by a generous outdoor terrace on top of the garage unit. the kitchen is connected to the rest of the area by a kiosk-like opening, which can be fully extended and integrated. the large stretch of wall is studded with a series of platforms which was provided for the house cat.

interior view image by key operation inc.

dining room image by key operation inc.

image by key operation inc.

(left) common space (right) kitchen images by key operation inc.

the house’s core circulation is hosted is hosted in the north-west corner of the layout in a series of winding staircases. in order to efficiently and appropriately utilize all available space, this route serves a dual-purpose as the dwelling’s library. providing a bench to sit and read, the landing is transformed into a functional platform.

image by key operation inc.

washroom image by key operation inc.

(left) view of study from stairs image by keizo shibasaki (right) library image by key operation inc.

image by key operation inc.

from inside the study image by key operation inc.

image by keizo shibasaki

loft space image by key operation inc.

image by key operation inc.

image by key operation inc.

entrance image by keizo shibasaki

night view image by key operation inc.

in context

site plan

floor plan / level 0 (1) stairs (2) WC (3) washroom (4) bath (5) parking (6) entrance (7) spare room (8) kitchen (9) living / dining (10) balcony (11) corridor (12) study (13) WC (14) bedroom (15) bedroom

floor plan / level +1

floor plan / level +2


project info:

site area: 99.63 m2 constructed area: 58.76 m2 gross floor area: 148.24 m2 storeys: 3

  • Very nice. First Japanese house I see on this site with colours, with presence of people, to be lived!!! Not only withe and clear wood.

    Esteban says:
  • Colourful and vivid house. Gorgeous indeed.

    Mr.Ricky says:
  • I don’t really see the superb architectur in this house. The floor plans are rather boring, the rooms have the same height, so there is no difference between a bathing room, storage room or living room, which also contributes to a rather normal house. I also don’t get the point why a spare room in the ground floor gets nice big doors and is capable of transforming the room into a nice open area whereas the study room is rather cosy with a door that not only I would hit my head on every time. Also the location of the spare room is misplaced. I think there are many points which could have had a better solution. All in all a nice house but kinda “old fashioned”. It’s doesn’t seem to have any future approach. Correct me, if I am wrong. I just think architecture should be ahead of time in order to anticipate to its long life cycle and not be “just current”.

    paranoia24 says:
  • to Paranoia24:

    But dont forget, that human beings keep living for decades the same way. and there are reasons why “old fashioned” houses look that way…
    I have to mention that i would prefer living in a 19th century building with hights ceilings and stucco(even in the bathroom) than in many of the past shown examples of “modern, ahead of time” houses …

    old fashioned says:
  • I agree in some parts, but many (not all!) reason why people live the same way for decades is because there where not so much oportunities. Architecture changes faster and faster and is capabale of solving much problems, which could not be done before. you couldn’t imagine constructions like those from sannaa or zaha hadid 30 years ago. And also I#m not a fan of this architecture it creates interesting spaces. different spaces need different proportions. Of course not necessarily, but in this case it would have made a dramatic change. for example in the study. I mean it is not a “bad” house, and aslong as the people living there feel good it doesn’t matter, but this is a regular house, with no innovations, and I think this is not what this site is about. especially because it is based in tokyo, and there are soooo many good projects there dealing with space way better.

    paranoia says:
  • Finally a Japanese house with some color and furniture inside!

    Ali Manco says:
  • All good points made by paranoia and oldfashioned.

    Architecture is felt by different people in different ways. Some like it, other don’t, others will hate it and others will love it.

    For me, this is a good house because I feel good about it. Isn’t a big leap for architecture of course, but sometimes, the small things are more important in our lives than the great ones.

    And, I don’t want designboom showing only big projects from China or US. Or, even worse, showing pseudo-art-architecture.

    Take something so banal as building a house and make it in a way that matches the life style of the family that lives there is a huge challenge. Moreover, when the space and the environment imposes a few restrictions on it.

    Mr.Ricky says:
  • Good, pragmatic design, given the constraint of the site. The design accomplishes much without necessarily being a “grand design”. Agree with others that colour and “living content” adds to the overall view d;-)

    Jetwax says:
  • i can see everyone notes about colours, peoples and furniture inside a japanise anchitecture! so do i just i saw the project… perhaps it’s because of colours that it seems so nice

    noemi ita says:
  • interior simpatico / exterior antipatico

    juliano says:
  • I feel the study would be better as a tatami room; as it is now, when the wife has her friends over for a chat at the dinning table, they all get a great view of the work-from-home husband’s crotch. Great!

    Chris says:
  • Cool House!

    maxim says:
  • poor execution: stairs should not project into the doorway(s). the plans are correct, though.

    this trend of plywood floors (and walls and ceilings, etc) and it looks cheap, not frugal.

    theo says:

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