Hiroyuki Yoshida

Nihon Housing Co., Ltd. engages in the management of buildings, condominiums, and real estate properties. It operates through the following segments: Condominium Management, Building Management, Real Estate Management, and Building and Repair Works. The Condominium Management segment provides the cleaning, maintenance, facilities management, and general administration services to its condominiums. The Building Management segment offers general building maintenance operations including janitorial, security, reception, and environmental health services. The Real Estate Management segment deals with the real estate sales, leasing, and brokerage services. The Building and Repair Works segment includes the construction, renovation, and large-scale repair works of buildings and condominiums. The company was founded in December 1958 and is headquartered in Tokyo, Japan.

Part of Nihon Housing Co., Ltd., Caterina Building KK is a Japanese company that provides cleaning and maintenance services. The company is based in Tokyo, Japan.

Gojinsha Keikaku Kenkyuujo KK is a Japanese condominium management company that focuses on providing affordable services. The private company is based in Hiroshima, Japan. The company is also a research institute that specializes in agency management.

Propell Integrated Pte Ltd. engages in the provision of engineering consulting services. It specializes in mechanical and electrical integrated solutions. It also offer supply, installment, and management of electrical engineering, extra low voltage, air conditioning and mechanical ventilation, fire prevention and protection and energy efficiency systems, and integrated facilities. The company was founded by Leng Yew Meng in 1999 and is headquartered in Singapore.