This project took place in northern Hamamatsu, over a duplex house for two families —the mother and her son’s family— standing on its own in the midst of an industrial district lined with a number of factories.One of the two families was represented by the mother and nobody else, and the other: her son, his spouse and four children. We were required to work out an arrangement for this unbalanced inhabitant ratio as well as secure an open space for the families to get together.Along with the physical limitations of the site impeding reclamation of the external environment, we deliberated on the openness of the internal space and control of light.
▼项目外观，appearance © Kiyoshi Nishioka
Appearance that blends in with the surrounding
We assigned each of the three blocks produced by the zigzag structure a function: “for the mother”, “sharing” and “for the son and his family”. The simple dimensional structure design created space for clerestory while protecting privacy, extensive living space and large-volume underfloor storage and dedicated the second for to the son and his family. The uneven roof created multiple clerestories, resembling the iconic appearance of the factories in the neighborhood.
▼凹凸不平的屋顶创造出多组高侧窗，the uneven roof created multiple clerestories © Kiyoshi Nishioka
Soft light and openness generated by closeness
In consideration of the ambient surrounding, we ensured privacy by keeping a fixed distance from the outside space. Meanwhile, clerestories gather plenty of light and its soft reflection on the wall surface permeates throughout the space.Closeness and openness are two contradicting elements at a glance, yet we pursued the cohabitation of the closeness of sense of protection from the outside world and the openness of the diffusion of light. By having these two opposite elements live under the same roof, we were able to achieve tranquility and extensiveness for a pleasant space embracing the big family.
▼客厅，封闭与开放共存，living room，closeness and openness coexisting © Kiyoshi Nishioka
▼光线经墙壁反射变得柔和，the light is softened by the reflection of the wall © Kiyoshi Nishioka
Tatami mat and polycarbonate
The entire floor of the shared living room is lined with tatami mats. The shared living room has six entrances connecting to other rooms and a spiral staircase connecting to the children’s room on the second floor which make the living room the epicenter of the house where different scenes of everyday life are met. Inhabitants could have just bypassed this space with wooden flooring or floor covered with some hard material; the tatami mats invite the families to sit, lie down, or be in whatever position they may feel comfortable with. Unexpected stay in the living room would produce natural interaction among the family members.The polycarbonate adopted for the wall surface of the living room transmits soft light to connect the spaces, creating a comfortable distance between the families at which they are able to enjoy their private life while feeling each other’s presence.
▼螺旋楼梯，地面采用榻榻米，侧墙使用PC板，the spiral staircase，the floor using tatami，walls using polycarbonate sheets © Kiyoshi Nishioka
▼细节，details © Kiyoshi Nishioka
This inventive combination of tatami mats and polycarbonate enhances the unique extensity of this duplex housing and helps conjure up interactions and interrelationships among the family members.
▼PC板，polycarbonate © Kiyoshi Nishioka
Light brings the family together
The shared living room attracts the families as it gathers much light through the clerestory and becomes the hub of communication within the house. The light collected in the living room softens itself as it gets carried into the adjoining room, connecting the two independent spaces together and allowing the families to enjoy their private life while mildly feeling each other’s presence.
▼高侧窗汇集大量光线，clerestories gather plenty of light © Kiyoshi Nishioka
▼客厅将两个家庭连接起来，the living room connecting two families © Kiyoshi Nishioka
▼母亲的厨房与餐厅，光线柔和，mother’s kitchen and dining room，the light is soft © Kiyoshi Nishioka
▼儿子一家的厨房，the kitchen of son’s family © Kiyoshi Nishioka
▼二层儿童房，阳光通过高侧窗洒满整个空间 © Kiyoshi Nishioka
children’s room on the second floor，the light permeates the space through clerestories
The light produces interrelationships among two families distinctive of a duplex housing.
▼从儿童房看向储藏室，光线向两个房间渗透 © Kiyoshi Nishioka
view from children’s room to the storage room，the light penetrating into the two rooms
▼平面，plans © 2id Architects
▼立面，elevations © 2id Architects
▼剖面，sections © 2id Architects
Design：Tsukasa Okada , Ryutaro Arai / 2id Architects
Sructure Engineer：Tetsuro Adachi
Design Period：Jan 2019 – Aug 2019
Construction Period：Sep 2019 – May 2020
Main Materials：Floor -Flooring, Tatami, Ceramic tiles, Wall – Polycarbonate Panel, Ceramic tiles, Ceiling – Plasterboard ceiling, Furniture – Kitchen: Stainless steel