Normally, residential properties that you own don’t need planning permissions from the Urban Redevelopment Authority as long as they satisfy these requirements:   ●     Their projections don’t exceed 2m measured from the building wall line ●     There is no vertical support except for maintenance purpose only ●     They meet the setback requirement of at least 1m for a landed house outside of GCBA, 1.6m for a landed house within GCBA, and 2m for other developments ●     They are kept clear of green buffer ●     They are not to be installed over approved “uncovered” balconies and such addition will not lead to spillage of rainwater to neighbouring sites   That said, we highly recommend checking in with your chosen contractor to make sure that you won’t have problems later on.