Nikken Sekkei

Nikken Sekkei (日建設計) is an architectural, planning and engineering firm from Japan, with headquarters in Chiyoda, Tokyo. The practice is defined under the Company Act of Japan as 株式会社 - Kabushiki-gaisha. The term can be translated as "stock company", "joint-stock company" or "stock corporation". Today (2019), Nikken Sekkei ranks as the second largest architectural practice in the world.[3]

Nikken Sekkei Ltd.
Native name
TypePrivate KG
Founded1900; 121 years ago (1900)
Area served
Key people
Tadao Kamei
(President and CEO)
  • Architectural design
  • Interior design
  • Urban design and planning
  • Landscape design
  • Structural engineering
  • MEP engineering
  • Civil engineering
  • Computation design & BIM
  • Sustainability
  • Resilience
  • Consulting
Number of employees
2,685 (as of April 1, 2019)
Footnotes / references

Staff and OfficesEdit

As of 2019, the group employs 2,685 workers and has completed more than 25,000 projects in more than 50 countries. Nikken Sekkei's International offices are in Tokyo, Shanghai, Beijin, Dalian, Seoul, Hanoi, Ho Chi Minh, Singapore, Dubai, Riyadh, Moscow, Barcelona; while the Japanese branches are located in: Osaka, Nagoya, Fukuoka, and Sendai. The newest office opened in 2018 in Bangkok, Thailand.[2]


Nikken Sekkei dates its origins back to 1900, as an offspring of Sumitomo Corporation.[4] Under the name of Sumitomo Temporary Architecture Department, it was founded in response to Sumitomo's need to establish a headquarters. The company establishes its independence from the Sumitomo Corporation in the 1950s under the name Nikken Sekkei Komu Co. Ltd.[5] As a private practice since 1970, Nikken Sekkei has maintained its In-house Shareholder Corporate System and is partly owned by its employees.[2]

Nikken Sekkei together with Nikken Sekkei Research Institute (NSRI), Hokkaido Nikken Sekkei, Nikken Sekkei Civil Engineering (NSC), Nikken Housing System Ltd (NHS), Nikken Space Design (NSD), Nikken Sekkei Construction Management (NCM) forms the Nikken Group.

President and CEOEdit

Tadao Kamei has served as CEO and President of Nikken Sekkei since 2015.

Selected projectsEdit

Among other notable projects, Nikken Sekkei was the primary architectural firm for the Tokyo Skytree, currently (2019) the tallest self-supporting broadcasting tower in the world, and second tallest man made structure of any kind.

In 2016 it has been selected by FC Barcelona for the redesign of the largest stadium in Europe.[7] and in 2018, Sumitomo Forestry, in collaboration with Nikken Sekkei, announced the study of W350 Project, the future tallest timber tower (350 meters) and Japan tallest building.[8]

Group companiesEdit

  • Nikken Sekkei Research Institute (NSRI): Focused on the environment, energy and city management fields. It conducts researches, making policy recommendations and surveys, project and planning support services.
  • Hokkaido Nikken Sekkei: Specialized in architectural design and programming; urban, regional, and environmental planning, and related investigation and consulting for extreme-cold weather condition regions.
  • Nikken Sekkei Civil Engineering (NSC): Specialized in urban development, urban infrastructure, manufacturing facilities, geotechnical and marine environment investigation, planning, design management and consulting services.
  • Nikken Housing System Ltd (NHS): Specialized multiple dwelling complex planning, design and administration together with the related surveying, research, and product development.
  • Nikken Space Design (NSD): Specialized in space design and administration services, focusing on architectural interiors, furniture and component design.
  • Nikken Sekkei Construction Management (NCM): Specialized in construction management incorporating advances technology services throughout every stage of a construction project.


  1. ^ "Corporate Data". Nikken Sekkei. Retrieved April 19, 2019.
  2. ^ a b c "Company Overview of Nikken Sekkei Ltd". Bloomberg L.P. Retrieved April 19, 2019.
  3. ^ "The World's 20 Largest Architecture Firms". ArchDaily. May 8, 2017. Retrieved April 19, 2019.
  4. ^ Buckley, Sandra (March 7, 2006). Encyclopedia of Contemporary Japanese Culture. Routledge. pp. 359–360. ISBN 978-1-134-76353-5.
  5. ^ Watanabe, Hiroshi (2001). The Architecture of Tokyo: An Architectural History in 571 Individual Presentations. Edition Axel Menges. p. 122. ISBN 978-3-930698-93-6.
  6. ^ Bloom, Jonathan; Blair, Sheila S.; Blair, Sheila (May 14, 2009). Grove Encyclopedia of Islamic Art & Architecture: Three-Volume Set. 2. OUP USA. p. 45. ISBN 978-0-19-530991-1.
  7. ^ Mafi, Nick (March 9, 2016). "FC Barcelona Taps Nikken Sekkei to Renovate Camp Nou Stadium". Architectural Digest. Retrieved April 19, 2019.
  8. ^ Hunt, Elle (February 16, 2018). "Plyscraper city: Tokyo to build 350m tower made of wood". The Guardian. Retrieved April 19, 2019.

External linksEdit