Koh Brothers Group Limited, an investment holding company, engages in the construction and building materials, leisure and hospitality, and real estate businesses in Singapore, Malaysia, Indonesia, and internationally. The company engages in the construction activities for building and civil engineering, and water and wastewater treatment, as well as hydro-engineering, and bio-refinery and renewable energy projects. It also manufactures and supplies building materials, including ready-mix concrete, cement, and pre-cast products, such as facades, household shelters, bathroom units, columns, and planks; and concrete pump rental services. In addition, the company is involved in the real estate development activities; and the rental of properties. Further, it owns and operates Oxford Hotel; and The Alocassia, a resort-styled service apartments with suites in Singapore. Additionally, the company offers project management and commission agent services. Koh Brothers Group Limited was founded in 1966 and is based in Singapore.