The owner is a telecommunication agent and his wife. This duplex project started with their concept as their mother and the family with 5-year-old twins living together. The plot is located near the commercial area within 1 minute walk from the JR station. The vicinity is crowded with buildings and hotels, so what perplexed us was the regulation such as fire preventions, thus we were committed to planning maximum space in a very limited site adopting steel structure.

Music, art, photograph, movies and other unlimited cultures are the masters hobbies which emerge in his versed furniture, and especially he is partial to the atmosphere of London and New York town houses.

The family like vintage materials preferably rather than brand new things thus we intended to create chronologically growing space.

The open void in the center performs as branches of a big tree and the private rooms arranged at the edge of each branch represent variety of perches for different scene and situations. This project would be so-called “urban tree house” of the family of five keeping moderate distance in a big tree.


[MONO magazine]


[The House]

[Japan Architect Blog]


「MONO magazine」


「The House」

Japan Architect Blog


  • Location Hirai Edogawa ward Tokyo
    Completion 2010. 4
    Lot area 41.75㎡
    Site area 31.70㎡
    1F floor area 27.71㎡
    2F floor area 31.70㎡
    3F floor area 25.99㎡
    PH floor area 3.24㎡
    Total floor area 88.64㎡
    Structure Steel
    Scale 3F
    Typology Private housing
    Family structure A grandmother + a couple + two daughters
    Structure engineers Masaki Structural Laboratory
    Kenta Masaki
    Facility engineers Shimada Architects
    Zenei Shimada
    Construction Honma Construction
    Photographer Masao Nishikawa
  • 所在地 東京都江戸川区平井
    竣工 2010年4月
    敷地面積 41.75㎡(12.62坪)
    建築面積 31.70㎡(9.58坪)
    1F床面積 27.71㎡(8.38坪)
    2F床面積 31.70㎡(9.58坪)
    3F床面積 25.99㎡(7.86坪)
    PHF床面積 3.24㎡(0.98坪)
    延床面積 88.64㎡(26.81坪)
    構造 重量鉄骨造
    規模 地上3階 PH階建
    用途 専用住宅
    家族構成 祖母+夫婦+子供2人
    構造設計 正木構造研究所
    設備設計 シマダ設計
    施工 本間建設
    建築写真 西川公朗