Last Uploaded: April, 2011

Keio University Hiyoshi Campus Collaboration Complex

Architectural DataFeaturesCasbee ScoreTechnical Details建物リストに戻る
Building exterior 1 (athletics field side) (Photograph: Mitsumasa Fujitsuka)
Building exterior 1 (athletics field side) (Photograph: Mitsumasa Fujitsuka) Building exterior 2 (Tsunashima Kaido side) (Photograph: AD GRAPHIC) Passage of Knowledge (Photograph: Mitsumasa Fujitsuka) Fujiwara Hiroshi Hall (Photograph: Mitsumasa Fujitsuka)

Project Outline

Constructed for the 150th anniversary of Keio University, the Collaboration Complex (Kyosei-Kan) at Hiyoshi Campus is an open learning facility for students, instructors and local communities designed to encourage cooperation and collaboration in line with the design concept of "providing a global center of learning." The glorious open space consisting of the Hiyoshi Forest and sports ground on the east side is ideal for the pursuit of physical activities of all kinds and serves as a springboard for global pursuits.
The Collaboration Complex is a new venue for sporting, cultural, health and business promotion and practical activities that complements and augments the programs offered at the three graduate schools. It provides a central focus for students and people of all ages to meet, mix and engage with one another.
The building itself features user-friendly and environmentally-friendly design along with a range of initiatives to reduce energy consumption and minimize ongoing running costs. In this way, it is the perfect embodiment of the Keio University ideal of an "Environment, Safety and Health campus."

Basic Information

[CASBEE rank] S  (5 stars)
[CASBEE tool used] CASBEE-Yokohama(2006 edition)
[Location] Yokohama City, Kanagawa Prefecture
[Completion date] July, 2008
[Site area] 358,226m2
[Total floor area] 38,207m2
[Structure] Steel frame reinforced concrete below ground, seismically isolated steel structure above ground
[Floors] 2 basement levels / 7 floors above ground plus penthouse
[Owner] Keio University (private educational corporation)
[Designer] Joint design venture between Environment Design Institute and Mitsubishi Jisho Sekkei
[Contractor] TOKYU CONSTRUCTION CO.,LTD. (building shell and mechanical equipment),

Information for visitors

Not open to general visitors (except open areas)


  • Visual Architecture, January 2009
  • KINDAI KENCHIKU, July 2009


  • General Award at the 10th Awards of the Japan Society of Seismic Isolation
  • Excellence Award at the 54th Kanagawa Architecture Competition
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These cases are described based on assessment results obtained using CASBEE.
CASBEE is a method for rating the environmental performance of buildings using Building Environmental Efficiency (BEE) as an indicator, which is based on the results of separate scores obtained for Q-1~Q-3 (Quality) and LR-1~LR-3 (Load Reduction).