Koh Brothers Group Limited, together with its subsidiaries, provides construction and management services in Singapore, Malaysia, Indonesia, and internationally. The company operates through three segments: Construction and Building Materials; Real Estate; and Leisure and Hospitality. It engages in the building and civil engineering construction and infrastructure works; engineering, procurement, and construction services for water and wastewater treatment, as well as hydro-engineering; and design, building, and installation of bio-refinery and renewable energy projects. The company also manufactures and supplies building materials, including ready-mix and pre-cast concrete, cement, and pre-cast components, as well as rents concrete pumps. In addition, it is involved in the development and rental of real estate properties; and hotel and leisure facilities operations. The company was founded in 1966 and is based in Singapore.