The demolition of four industrial buildings will be considered today by a Housing Authority committee. If the strategic planning committee endorses the proposal this afternoon, the authority is expected to return the vacant land to the government. The four industrial buildings were built between 1959 and 1975. They are in Kwun Tong, Kowloon Bay, Chai Wan and Tsuen Wan. Land returned by the authority is a significant source of sites for the government's land bank. At present, the authority administers 12 industrial buildings. Most have low occupancy rates because they lack modern facilities and because of the trend of more industries moving operations to the mainland. The four buildings under discussion have only half of the units in use. Committee member Patrick Lau Sau-shing said he agreed the land should be returned to the government. 'If the authority could use the sites to build residential flats, of course, it should keep them,' said Mr Lau, who is also an independent legislator and a Town Planning Board member. 'But the authority would have to apply to the board to change the sites' land use. I'm not sure if they can get the board's approval as it will consider whether the neighbourhood is suitable to become residential.' Mr Lau said that the land could be sold for office buildings and hotels. The buildings are the Kwun Tong Industrial Building and the Kowloon Bay Industrial Building, both in Wai Yip Street, the Chai Wan Industrial Building in Lee Chung Street, and the Tai Wo Hau Industrial Building in Tsuen Wan. If the plan is approved, the authority's commercial properties committee will discuss compensation and resettlement.