From the architects:The house is located on an overcrowded residential area in Kouchi city. We planned the house to be filled up capacity of the premise whose size is width 6 meters * depth 17 meters.
We tried to reduce voids to keep the building coverage ratio less than 60%.
On the other hand the void which occupies about 40% of the premise is used as a parking area for two cards, a courtyard which includes stairs and a terrace.

Twin house / y+m design office
© Yohei Sasakura

The house is filled up capacity of the premise. So it is concerned that the house gives a feeling of pressure to neighbors and that ventilation and sunshine lighting through the courtyard because the outer wall is high.

To resolve these concern we designed the house that is divided into two house volumes. So that the two house volumes fit the neighbor’s house and reduce the feeling of pressure. To ensure the sunshine into the courtyard we save the height of the house volume. And to ensure ventilation we made the courtyard connect to the parking. As the result we can manage line of sight from the courtyard and rooms inside to sky. And it realizes sunny, opened and well-ventilated courtyard.

Twin house / y+m design office
© Yohei Sasakura

The client’s friends get together at the courtyard to enjoy both inside and outside space through the stairs. And a herringbone array gate satisfies both security and privacy for the people.

Twin house / y+m design office
© Yohei Sasakura

We designed elongated house in accordance with elongated site. In addition further elongated design around the courtyard ensures enough sunshine and ventilation in each room. We also designed glass curtain wall around the courtyard. It ensures line of sight among each room and breadth of space more than the real dimension.

Twin house / y+m design office
© Yohei Sasakura

We set a fan with temperature sensor on top of the house. The fan works as an exhaust heating in summer and a circulator in summer not to use air-conditioning equipment as much as possible.

Twin house / y+m design office
© Yohei Sasakura

The twin house is a special house that two house volumes connect each other and become one house. The house doesn’t need turning on lighting at afternoon because of the bright courtyard. The house also provides bright and well-ventilated living environment and pleasant space where friends come together and enjoy.

Project Details:

Location: Kouchi, Japan
Type: ResidentialHouses
Site Area:114.39㎡
Building Area:66.40㎡
Total Floor Area:127.08㎡
Architects: y+M design office
Photographs: Yohei Sasakura

Previous articleOrigami “Zippered Tube” Prototypes Offer New Structural Options
Next articlePerkins+Will unveils Haworth Los Angeles showroom
Aline Chahine
Aline is an international licensed architect currently practicing in Canada, she is the reason you are reading this right now, Aline founded the platform back in 2008 shaping the very foundation of Architecture Lab, her exemplary content curation process that defines the online magazine today.
Highlights
  • Aline founded Architecture Lab in 2008
  • Lead editor of dan | dailyarchnews since 2019
  • Founded and Creative Director of DesignRaid
  • Licensed architect with creative sales and marketing experience
Experience
As full-fledged architect, Aline's background involved a great deal of research that lead to the creation of Architecture Lab as an online database of exemplary design. Her experience snowballed into founding two architecture platforms, Architecture Lab and DesignRaid.
Education
Aline received USEK’s Master of Architecture in 2004 and BA in English from the University of Toronto
TITLE | Founder of Architecture Lab
About Architecture Lab
Architecture Lab is a MKR.S Media brand, a website devoted to extraordinary design and aesthetics aiming to promote exceptional aesthetic values and sustainable design in all it's shapes and sizes. Learn more about us and our editorial process and feel free to contact us if you would like to see something in particular on the website, our certified experts will get back to you with the most trustworthy advice as soon as possible.
Read all articles by Aline | Follow her on LinkedIn