The Office Building Business, Mitsubishi Estate’s core business, engages in the development, leasing, and property management of office buildings with state-of-the-art functions, mainly in major Japanese cities centering on the Marunouchi area. Our businesses involve three types of earnings models: our property development and leasing business, in which we ourselves develop office buildings and receive rental revenue from them; our capital recycling business, where we generate capital gains on the sale of properties we have developed; and our non-asset businesses, which center on office building operations and management. Through building development and operations, we are promoting urban development to increase the attractiveness of the entire surrounding area.

Image: Business Concept

Revenue from Operations,Operating Income / Operating Income Ratio


Competitive Advantages

  • Ownership of about 30 office buildings in the Marunouchi area, a leading business area in Japan with one of the world's greatest concentrations of companies.
  • Redevelopment in Marunouchi not requiring new land acquisition is largely unaffected by fluctuations in the real estate investment market, thus enabling stable and continuous redevelopment.
  • Development know-how and a track record cultivated through continuous urban development in the Marunouchi area for more than 100 years.
  • Tenant relationships and information networks built through the Group’s wide-ranging businesses, includ-ing development in the Marunouchi area.
  • Relationships with the central and local governments built through public and private sector cooperation in urban development.
  • Urban development and area management with advanced disaster-management functions centering on the Marunouchi area.

Business Strategies

Marunouchi Area

  • Generally, redevelopment enables rental revenue to be increased by expanding building floor space and raising rents per square meter. In the Marunouchi area, we aim to promote continuous redevelopment that raises value through individual redevelopment projects as well as by realizing synergies across the whole area.
  • We intend to strengthen the functions of Marunouchi through the “Open Innovation Field” initiative to cultivate new communities and undertake field trials with leading-edge technologies.

Main Office Areas in Japan

  • We aim to strengthen our development pipeline by using the know-how we have accumulated through redevelopment in the Marunouchi and other areas.

Non-Asset Businesses and Others

  • We intend to expand and strengthen non-asset businesses, including property management and master leases, and businesses that utilize existing stock, such as through the renovation of aged buildings.
  • We aim to leverage relationships built through office building development and the office building leasing business to expand other businesses and create new businesses.

The “Open Innovation Field” Initiative in the Marunouchi Area

As one of the growth strategies for the Office Building Business in the Medium-Term Management Plan, we are promoting the “Open Innovation Field” initiative in the Marunouchi area. The initiative entails bringing people and companies that find opportunities in innovation together and interact. Accordingly, we aim to provide a constantly stimulating city environment that inspires creativity and a willingness to realize new possibilities and embrace change.

Specifically, we are focusing on the fields of AI, the Internet of Things (IoT), and robotics and seeking to actively promote practical tests with systems and services that utilize state-of-the-art technology. In the office building leasing business, we are providing small offices targeted at growing companies both in Japan and overseas as well as start-ups working on the application of advanced technologies. We are working to build a platform for providing a point of contact between different players and support the formation of networks for lively exchanges between start-ups and large companies.

Picture: Field Test of Self-Driving Taxi Conducted between Otemachi and Roppongi

Field Test of Self-Driving Taxi Conducted between Otemachi and Roppongi
The world’s first autonomous taxi to be operated on public roads



In the Marunouchi area, we completed the construction of the new Marunouchi Nijubashi Building in October 2018.We also commenced the redevelopment of the Marunouchi 1-3 Project in January 2018 as well as the construction of Tokyo Tokiwabashi Project Building A in February of the same year.

Tokyo Tokiwabashi Project is a large-scale redevelopment project being conducted in phases during a period of over 10 years. It will be developed over a 3.1-ha area in front of Tokyo Station and connect the major business districts of Marunouchi and Yaesu /Nihonbashi. For this project, we are creating 7,000 m2 of open space and implementing various state-of-the-art initiatives toward strengthening disaster prevention and reducing environmental burden. In terms of environmental burden reduction efforts, we are aiming for Tokyo Tokiwabashi Project to become the first-ever integrated urban building development project in Japan to receive the SITES® certification, while being on course* to acquire the highest rating for the DBJ Green Building Certification, which is spon-sored by the Development Bank of Japan and recognizes real estate properties with high environmental and social awareness. Further, for the appropriation of funds to construct Building A, we issued publicly offered green bonds with a term of five years and in the amount of ¥20 billion in June 2018, becoming the first major real estate developer in Japan to do so.

* Building A, currently under construction, was awarded a five-star rating, the highest such designation, for “plan certification” in fiscal 2019.

Image: Marunouchi Area,Tokyo (Outside of Marunouchi)