All buildings should be checked under any new mandatory inspection scheme, not just those more than 20 years old, a professional group said yesterday. Even new structures should be scrutinised, said the Hong Kong Institute of Surveyors in its response to a government move to draft new compulsory inspection laws after a hawker was killed by falling concrete last week. Institute president Samson Wong San said the group's proposals were vital in ensuring public safety. 'It is wrong to narrow our focus to old buildings only. Good maintenance slows down depreciation and guarantees public safety,' he said. The institute proposed that new complexes should go through an inspection cycle every 10 years, with a shorter cycle for older buildings. Those more than 30 years old should be inspected every five years and those more than 10 years old every seven. A member of the institute, David Chan Wah-wai, estimated about 16,000 buildings were more than 30 years old, while the number of those older than 20 was about 24,000.