Section 2. Expanding Our Business

The Uchisaiwaicho Daibiru Building, completed in 1983, also had aging equipment, so renovation work was undertaken to upgrade the electrical substation equipment, lighting, lavatories and kitchenettes, and air conditioning equipment. The work was completed in March 2011.

The Awajimachi Daibiru Building, completed in 1986, was 26 years old in April 2011 when it underwent renovations to its rental offices and lavatories as well as upgrades to its electrical substation equipment, automatic fire alarm system, emergency broadcasting equipment, and air conditioning equipment. The renovation work was completed in June 2012. Renovations of the Mita-Nitto Daibiru Building, which was 26 years old, were also carried out. Repairs to the exterior walls and rooftop waterproofing, upgrades to electrical substation equipment and lighting, upgrades to air conditioning and heating, renovations of the lavatories, and plumbing upgrades were completed by February 2015.

Under Design 100 Project Phase I, the medium-term management plan established in May 2013, Daibiru had announced investment of 10 billion yen over five years to strengthen the competitiveness of its assets, and the first phase of these investments was to renovate the Hibiya Daibiru Building. The Hibiya Daibiru Building had originated with the Hibiya Osaka Building in 1927, and its history had included a rebuild in 1989, and now the decision was made to increase its value further through renovations. The main focus was on upgrading the electrical and air conditioning systems, but there would also be improvements to other building equipment functions and renovation of amenities in the common areas, such as the entrance and lavatories. Additionally, an emergency power generator capable of operating for 48 hours was installed in connection with the company’s BCP (business continuity plan), the need for which had increased as a result of the Great East Japan Earthquake. The renovations took 39 months and were completed by June 2016.

Renovation work on the Shiba Daibiru Building, which had been completed in 1989 and was 27 years old, began in January 2017. Thorough renovations that included repairs to the exterior walls and rooftop waterproofing, upgrades to electrical substation equipment and emergency power generators, conversion of all lighting to LEDs, upgrades to heating and air conditioning equipment, upgrades to water storage tanks, and renovations of the lavatories and kitchenettes, were completed in 2019.

Renovation work on the Yodoyabashi Daibiru Building, completed in 1997, began in August 2022. Daibiru plans to carry out repairs to the exterior walls and rooftop waterproofing, upgrades to electrical substation equipment, distribution panels, and control panels, upgrades to power generators and lighting fixtures, upgrades to air conditioning equipment, and lavatory renovations. The company plans to complete these renovations in 2024.