[highlight1] Double Helix House [/highlight1]
A little home designed by Tokyo-based architectural unit onishimaki+hyakudayuki architects (o+h). Maki Onishi narrates their concept for this small house in Tokyo: their design responds to the penned in character of the site – only accessed by two narrow alleys. A long corridor/stairway spirals up the outside of the house, blending the vertical circulation with the family’s living spaces. The project takes its name from the fact an exterior stair winds its way upward atop the internal stair, creating a parallel vertical route outside the home.
The house is located on a site in Tokyo which is only accessible via two narrow alleyways. A long corridor/stairway spirals up the outside of the house. The exterior stair winds its way upward atop the internal stair, creating a parallel vertical route outside the home.
The architects’ decision to dedicate generous floor space to circulation – despite the limited size of the house – was praised by the jurors for its boldness. The residents are able to use this spiraling space for activities such as reading, playtime, or simply relaxing.
- “That they imaged these two alleys wrapping around the core of the house, mixing circulation spaces – she calls the stairways “tubes” – with the living spaces within the core. – The architect Maki Onishi explained
- Double Helix House has a prominent long corridor/stairway spiralling up its exterior. The spiral was inspired by the site’s two narrow entryways leading from the surrounding streets. The jurors appreciated the project’s sensitivity to its context and architects Maki Onishi and Yuki Hyakuda’s dynamic representation of their clear concept.
- The spiraling volume is enclosed, and the top of the volume is used as a series of exterior spaces that lead to a rooftop terrace. These two spirals, the enclosed and the exterior one, give the project it’s name: Double Helix House.
o+h – onishimaki + hyakudayuki architects
This is a small house in Yanaka area in Tokyo. The site is fully surrounded by other houses and there is only a narrow ally from the front road to the site. The approach starts from the ally, then gradually goes up and winds itself around the house.
The center core is an abstract white cube and there are a living, a dining, a kitchen, a bathroom and bedrooms. In the wound corridor, there are a private art gallery, a library, and a studying space for the family. At the same time, they can use the roof of the corridor as roof gardens and terraces. It means there are double helix spaces in this house.
[highlight1] Project Data [/highlight1]
Project name: Double Helix House
Location: Yanaka, Tokyo, Japan
- Type By Characteristic: Contemporary House, Japanese House, Tower House
- Type By Site: City House
- Type By Size: Small House – (51 sqm – 200 sqm)
- Type By Structural: Concrete House
Project Area: approx 100 sqm
Project Year: 2010
Completion Year: 2011
- 28th Shinkenchiku Award – winner
[highlight1] The people [/highlight1]
Client / Owner / Developer: Private
Architects: o+h – onishimaki + hyakudayuki architects – Tokyo, Japan
Project Architect: Maki Onishi, Yuki Hyakuda
Text Description: © Courtesy of o+h – onishimaki + hyakudayuki architects, japlusu
Images: © o+h – onishimaki + hyakudayuki architects, Kai Nakamura