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, in which 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.

• 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, including 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.