House in Shiraiwa 住宅 by Tsukasa Okada - 2id Architects

House in Shiraiwa 住宅 by Tsukasa Okada - 2id Architects is a highly esteemed winner of the very prestigious 2020 A' Design Award 銀獎 in 建築、樓宇及結構設計 Competition Category.

銀建築· 2020

House in Shiraiwa 住宅

by Tsukasa Okada - 2id Architects

Client: 2id Architects

A' Design Award 銀獎 Winner in 建築 Category

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Verified Award Winner

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The Design

About House in Shiraiwa 住宅

白岩之家係一間興建喺日本濱松山坡上嘅住宅，四周被柑橘園環繞。室內面積平均分成室內同半戶外兩個空間。一個寬敞嘅客廳促進家庭成員之間嘅交流，而其他房間就保持細小。棚架覆蓋咗半戶外嗰半邊，喺客廳同景觀之間形成一個緩衝區。棚架嘅細部設計係經過日照模擬而定，佢啲窄縫喺牆上投射出變化不斷嘅陰影。牆身以刮擦砂漿飾面，掺入本地嘅碎白岩石。

The Recognition

About the A' Design Award 銀獎

House in Shiraiwa 住宅是 A' Design Award 銀獎得主，這是授予頂級、華美而令人印象深刻的設計的極為崇高的認可。銀獎得主是極其卓越、極具創造力的作品，展現出其設計師傑出的專業技能、才華與敏銳。預計House in Shiraiwa 住宅將成為一件出色的典範之作，兼具非凡的專業性與深刻的創新性。這件贏得 A' Design Award 銀獎的設計是一項備受矚目、令人欽佩的發明，造福並拓展藝術、科學、設計和技術的界限。House in Shiraiwa 住宅是一件令人羨慕的創作，它喚起渴望，帶來積極的情感，並激發驚嘆與讚嘆。

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: Its interior space are equally divided into two different sections, Indoor and semi-outdoor space.
Large part of the indoor space is allocated to living room to enrich communication between the family, whilst the other rooms are minimized. The other half, semi-outdoor space is covered with pergola surrounding the indoor space. It allows residents to bring their indoor activities into buffer zone between the living room and magnificent landscape whilst they feel sense of local environment.
Dimensions & Packaging: Site area: 498m2
Building Area : 109m2
total Floor Area : 218m2
Tags: Pergola, silhouette, distance, Nature, buffer zone, white stone
Production Technology: Detail design of the pergola was determined by sunlight simulation.Its beautiful silhouette created by slits of the pergola gives wall of the building different characters by each days and seasons.Structurally, diagonal parts of pergola helps to reinforce the pergola as horizontal brace.
In terms of materiality, scraped mortar with crashed white rock as a local material are applied to the wall. Although, the wall continues from outside to the inside with same material, each walls have finished by different scraping equipments to soften indoor space.
Design Challenge: This project aims to regain locality in contemporary Japanese house whilst keeping context of modernism. Locality has been often lost in Japanese architecture since thinking in a way of architecture modernism has became general in the society. However, building always sticks to its local, and it can not move like vehicle and machine. Therefore, it is important that reconnecting architecture and its surroundings by a notion of locality such as style, history and material.
Research: Back in the past, Japanese house had many elements to create borderless relationship between in and out. such as Engawa: outer corridor located outside of window but used as the part of indoor space. Additionally, there was unique architectural style in each area in Japan. Nevertheless, it was lost because highly adiabatic and protected house to cope with severe changes of climate has been demanded.
Inspiration: A house is located in Shiraiwa, the area in the north of Hamamatsu city in Japan. It is surrounded by mandarin plantation halfway up the mountain.
Its environment having extraordinary view and rich nature allows to design a building by the concept of distance between inhabitation and nature.

The house has been formed by two of contradictory senses. One is a sense of openness led by its location looking down valley from slope on the mountain. The other is a sense of security led by the other fact of its location surrounded by mountains, as if it protects the house.
Project Duration: The project started in Feb,2017 and finished in Apr 2019 in Hamamatsu, Japan
Operation Flow: Use of the pergola space has not been defined intentionally to keep it flexible and free space changed by user’s imagination. In spite of the fact that it has same amount of space as the one in indoor space, I believe making such a space without specify type of activities is highly beneficial for user’s future living in their local.
Team Members: Structure Design : TETSURO ADACHI STRUCTURE DESIGN
Image Credits: Photographer : Toshiyuki Yano