Build King Holdings Limited is an investment holding company engaged in building construction and civil engineering in Hong Kong and the People's Republic of China. Its projects include institutional, school, residential and commercial buildings, as well as fitting out, improvement and alteration works. The company also undertakes environmental, foundation, general civil, marine, railway infrastructure and track, structural steel, and tunnel works, and provides property development, marine engineering and transportation, sewage treatment, electrical and mechanical engineering, environmental engineering, and marine construction contracting services. It also supplies steam fuel. Founded in 1980 and headquartered in Kwun Tong, Hong Kong, it operates as a subsidiary of Wai Kee Holdings Limited.