Tung Chee-hwa has pledged to increase the pace of renewal of old districts after a hawker was killed by a piece of concrete falling from a residential block in Mongkok on Tuesday. Speaking after inspecting the scene at Tung Choi Street, the Chief Executive said: 'Urban renewal is a long-term way of solving this particular problem. 'Gordon Siu (Kwing-chue) is studying various proposals. We ought to speed up the process.' The Planning, Environment and Lands Bureau, headed by Mr Siu, plans to finalise a bill on the setting up of the Urban Renewal Authority next year. Mr Tung said officials would also review the application procedure to a $500-million loan scheme to assist flat owners to refurbish their buildings. 'Unfortunately, only about half a million has been spent. We will study how to promote it,' he said. 'The other issue is to organise owners' corporations because it is up to the owners' corporations to be responsible for the safety and maintenance of their buildings.' According to the Rating and Valuation Department, about 45 per cent of Hong Kong's 963,000 private domestic units are more than 20 years old. They are mainly in Yau Ma Tei, Shamshuipo, Hunghom, Wan Chai and Kwun Tong. Legislators called for laws to make safety checks mandatory. They also accused officials of a lack of sincerity in promoting building management, saying they should be partly blamed for Tuesday's fatal incident. Independent legislator Dr Raymond Ho Chung-tai said: 'We should seriously consider new laws to require landlords to inspect their buildings periodically.' Mr Ho, who represents surveyors and engineers in the legislature, proposed that all blocks over 30 years old should be covered by a mandatory inspection scheme. His views were shared by Lau Kong-wah, of the Democratic Alliance for the Betterment of Hong Kong, who also urged the Government to help owners form owners' corporations. 'Most owners do not know what to do to manage a building or apply for government loans for maintenance. We cannot lay the blame solely on the owners - the Government should also play a more active role,' Mr Lau said. The Home Affairs Department helps owners to form corporations. At present, about 6,000 have been created.