Build King Holdings Limited, an investment holding company, engages in the building construction and civil engineering works in Hong Kong and the People's Republic of China. It constructs institutions/schools, and residential and commercial buildings, as well as undertakes fitting out, improvement, and alteration works for buildings. The company also undertakes environmental projects; foundation works; general civil works, including airport, drainage and water, landscaping, site formation, sports ground and park, and road and bridge works; marine works comprising general marine works and submarine pipelines; railway infrastructure and track works; structural steel works; and tunnel works. In addition, it provides property development; marine engineering and transportation; sewage treatment; electrical and mechanical engineering; environmental engineering; and marine construction contracting services.