We engaged in designing a house of a plaster craftsman to be built on a land facing an alley along which traditional houses stand.
You would be impressed with the beauty of nature found in farms spreading in the north side of the land. Meanwhile, the land is adjacent to the alley in its south, along which houses stand.

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Project Title: Konan-hoses


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Country: japan
Location: Kounan,terasho
Koka, Shiga
Creative Director:Design Director: Art Director:alts design office  sumiou mizumoto
Client: private person
Photographer: kenta kawamura


Wooden two-storied building
The lot area:450.41㎡
Floor space:129.18㎡
1floor area:101.83㎡
2floor area:37.69㎡
The total floor area:139.52㎡
House with Landscape Captured Inside

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terasho house By ALTS DESIGN OFFICE - Sheet3
We planned to create inside the building an outdoor-like space that would smoothly fuse with the rural scenery in the north of the land.
You would enjoy the comfort of the outdoors no matter where you are in the house, which has a relieving and calming atmosphere.

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A spot garden in the Japanese style room is connected with the terrace outside via a piece of glass, and the interior and the exterior are nested together. Also, a tiled floor extending from the entrance will produce an even more outdoor-like atmosphere.
In the living room with the kitchen located in its center, you would feel as if you were enjoying cooking outdoors because there is a window about six meters long that can be fully opened.

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terasho house By ALTS DESIGN OFFICE - Sheet15
On the terrace outside the window that can be fully opened, the sunlight is moderately weakened and you will notice a breeze blowing.
By setting up a space that would make you aware of the outdoors no matter where in the house you might be, we were able to create a natural and comfortable living environment.
We repeatedly discussed the finish and texture of the inner wall, the outer wall and the floor at each phase of the construction process with the client, who is a plaster craftsman, and finished those with great care.

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We were able to complete the house with the client, not on the basis of a design drawing completed 100%, but with the help of the clues we found in the process of house making. We will never forget this experience.


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Sumiou Mizumoto

Born on April 13, 1977 in Japan
The registered architect (second class)
March,1997  Graduated from a vocational school for architectures (Japan)
September,1998-October,2009  Architectural design office “Kankyo design Co.ltd” (Japan)
November,2009- January,2012  architectural design office (Japan)
February,2012  Established ALTS DESIGN OFICE
August,2014  Corporateizationed to ALTS DESIGN OFICE Co.ltd


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Address: Miwaku plaza 1F, 3-59 Ayano Minakuchi-cho, Kouka-shi, Shiga, Japan
TEL: +81-748-63-1025 FAX: +81-748-63-1025
The second class registered architect office. Registered number: Shiga 2616
Capital: 3 million JPY
Number of staff: 4



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Rethinking The Future Awards 2022