Koh Brothers Group Limited, an investment holding company, provides management services in Singapore, Malaysia, Indonesia, and internationally. It operates in three segments: Construction and Building Materials; Real Estate; and Leisure & Hospitality. The company provides building and civil engineering construction and infrastructure works; engineering, procurement, and construction services for the water and wastewater treatment; and hydro-engineering sectors; and design, building, and installation services for the bio-refinery and renewable energy sectors. It also manufactures and supplies building materials, such as ready-mix concrete, cement, and pre-cast products comprising facades, household shelters, bathroom units, columns, and planks; and concrete pump rental services. In addition, the company develops, leases, and manages real estate properties. Further, it operates, manages, and invests in hotels. Koh Brothers Group Limited was founded in 1966 and is based in Singapore.