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Sumit Singhal
Sumit Singhal
Sumit Singhal loves modern architecture. He comes from a family of builders who have built more than 20 projects in the last ten years near Delhi in India. He has recently started writing about the architectural projects that catch his imagination.

House Taishido in Setagaya, Japan by Key Operation Inc.

June 14th, 2011 by Sumit Singhal

Article source: Key Operation Inc.

3 stories timber structure house built in a dense residential area in Setagaya, Tokyo. The 7x12m plot is surrounded by narrow street and alley, so it was required to set back the building façade. The ground floor volume is set back for 1.5m and the upper level pitched roof volume is set back further for 2m. Even this house has a descent volume, this arrangement makes it fit to the scale of the surrounding.

House Taishido

  • Architects: Key Operation Inc.
  • Project: House Taishido
  • Location: Setagaya-ku, Tokyo, Japan
  • Client: Private
  • Usage: Residence
  • Completion: 2010.10
  • Software used: Vectorworks

Street View

  • Contractor: Tokyo gumi
  • Site Area: 99.63m2
  • Construct Area: 58.76m2
  • Gross Floor Area: 148.24m2
  • Floor Numbers: 3


  • Architecture Design: Akira Koyama + KEY OPERATION INC.
  • Design team: Akira Koyama + KEY OPERATION INC. / ARCHITECTS
  • Supervision: Akira Koyama + KEY OPERATION INC. / ARCHITECTS
  • Structural Engineer: aR Structural Engineering
  • Engineer: Akira Koyama + KEY OPERATION INC. / ARCHITECTS
  • Air-condition: Akira Koyama + KEY OPERATION INC. / ARCHITECTS
  • Interior: Akira Koyama + KEY OPERATION INC. / ARCHITECTS
  • Landscape: Akira Koyama + KEY OPERATION INC. / ARCHITECTS



  • Architecture: Tokyo Gumi
  • Engineer: Tokyo Gumi
  • Air-condition: Tokyo Gumi
  • Interior: Tokyo Gumi
  • Landscape: Tokyo Gumi



  • Outside wall: Mortal
  • Interior: Wall paper
  • Landscape: concrete block


Inside this external volume, a couple of internal voids with different size have been allocated. With this arrangement, a larger void gets more surfaces touching the other volumes which can create more connection. For example, the largest living/dining void is not only large horizontally but also vertically with 3.2m ceiling height. With this size, this void is connected to the kitchen void and study void. The stairs/library void is relatively small horizontally but as it is vertically large, this void is connected to many other voids. Moreover, the larger void has more connection with the external space as it has more surfaces that touch the external volume.


Just by adjusting the size and the position of the void, we tried to control the composition of the whole house.

Interior View

Interior View

Study Room


Interior View

Interior View

Interior View

House Taishido

Study Area

House Taishido

Related posts:

Contact Key Operation Inc.

Tags: ,

Categories: House, Residential, Vectorworks

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