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Oshikamo by Katsutoshi Sasaki + Associates
Japanese architects Katsutoshi Sasaki + Associates have completed a four-winged house in Toyota.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_01.jpg)
The metal facade of the Oshikamo house conceals a timber interior and two sheltered courtyards.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_02.jpg)
Skylights between exposed rafters let natural light into an open-plan living room at the centre of the house.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_10.jpg)
Ladders climb up into loft bedrooms in two of the wings, above a third bedroom and a large walk-in closet.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_04.jpg)
The third remaining wing contains washrooms, while a space used for quiet contemplation occupies the fourth.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_08.jpg)
This is the third house by Katsutoshi Sasaki + Associates featured on Dezeen - see our earlier stories about one with rooms in separate blocks and another shaped like a triangle.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_06.jpg)
Photography is by Toshiyuki Yano.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_11.jpg)
Here's a little more text from Katsutoshi Sasaki:
Oshikamo
Prerequisite
The lot is located in a residential area and is surrounded by neighboring housings, with a mother's house on its west.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_09.jpg)
Requests for the house include: encourages the family to spend time together (rather than isolating anyone) / spatial / bright with plenty of natural light.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_07.jpg)
Plot
The family space is arranged at the center of the site.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_13.jpg)
The private space is arranged at the edge of the site, and they connect gradually by the one volume.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_15.jpg)
Distance among rooms and curved spaces provide adequate privacy.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_05.jpg)
Each rooms are indistinctly connected to each other via central space.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_12.jpg)
Indistinct
That indistinct connection is the key concept of this house, expressing the spatial relationship (not on/off relationship) among the rooms. Like a photo out of focus.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Assosciates_16.jpg)
Invisible one room
You can grasp the space visually if the entire space is visible.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_20.gif)
You can let your consciousness develop the space if not all is visible. Like walking in a path, not sure of what is ahead.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_17.gif)
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Ambiguously
Spaces divided by straight lines relate to rationally. Spaces connected with curving lines relate to ambiguously. Like a drop of milk in coffee.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_18.gif)
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Connection
What interests us is how rooms connect to each other, more than how a room is made. What interests us is the “air” that curves, crosses, and diffracts. Like a cloud, constantly moving without having definite shape.
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_19.gif)
Location: Toyota Aichi Japan
Site Area: 191.71m2
Built Area: 84.18m2
Total Floor Area: 101.94m2
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_21.gif)
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Type of Construction: Wooden
Exterior Materials: Metal finish
Interior Materials: paint finish
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_22.gif)
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Design time: June 2010 - February 2011
Year of completion: September, 2011
![Oshikamo by Katsutoshi Sasaki + Associates Oshikamo by Katsutoshi Sasaki + Associates](https://static.dezeen.com/uploads/2011/11/dezeen_Oshikamo-by-Katsutoshi-Sasaki-+-Associates_23.gif)
Design team: Katsutoshi Sasaki + Associates
Structure company: Masaki structural laboratory
Construction company: Inoue construction Ltd