All industrial land in Kwun Tong, Kowloon Bay and San Po Kong was gradually rezoned to "Business" use since 2001, which allows conversion of industrial buildings to office use and redevelopment into commercial / office buildings. In April 2010, the Government first introduced measures to revitalize industrial buildings and reactivated the revitalization scheme in October 2018. By end December 2024, 72 applications in Kwun Tong, Kowloon Bay and San Po Kong have been approved and executed for wholesale conversion or redevelopment under the revitalization policy for industrial buildings. These industrial buildings have been or will be redeveloped or converted into offices, shops and services, and hotels.