Evaluating unauthorized appendages in private apartment buildings

Hong Kong is a densely populated city where high-rise buildings are common. In such an environment, building failures can pose a serious threat. Unauthorized building works, which are constructed without prior approval and consent from the government, are responsible for certain building-related accidents. In particular, those unauthorized building works attached to the external envelopes of buildings endanger the lives not only of their occupants, but also of passers-by and they cause damage to properties themselves. An overview of the proliferation of unauthorized building works in Hong Kong is provided followed by the first known empirical study on this topic. After inspecting 323 apartment buildings in two districts, the factors affecting the proliferation of unauthorized building works were analysed. It was found that buildings with amenities incorporated into their designs generally had fewer unauthorized building works on their external envelopes. However, owners associations or property management companies did not have any influence on unauthorized building work numbers for their buildings. These findings have far-reaching implications on the formulation of government policies for building safety. The formation of statutory owners associations or the engagement of property management companies is not effective in containing the unauthorized building work problems in Hong Kong. Community education and stricter law enforcement would be more effective. Hong Kong est une ville très peuplée où les bâtiments de grande hauteur sont très répandus. Dans un tel environnement, les défauts de construction peuvent constituer une menace sérieuse. Les travaux de construction non autorisés, exécutés sans l'approbation préalable et le consentement du gouvernement, sont responsables d'un certain nombre d'accidents liés aux constructions. En particulier, les travaux non autorisés sur les enveloppes extérieures des bâtiments mettent en danger non seulement la vie des occupants mais aussi celles des passants; elles peuvent aussi provoquer des dégâts sur les bâtiments proprement dits. Cet article contient une vue générale de la prolifération des travaux de construction non autorisés à Hong Kong ainsi que la première étude empirique connue concernant ce sujet. Après inspection de 323 immeubles d'habitation dans deux quartiers, on a analysé les facteurs concernant la prolifération des travaux de construction non autorisés. Il en ressort que les bâtiments avec des commodités intégrées à la conception comportent généralement moins de travaux non autorisés sur leurs enveloppes extérieures. Toutefois, les associations de propriétaires ou les sociétés de gestion immobilière n'ont eu aucune influence sur le nombre de travaux de construction non autorisés en ce qui concerne leurs bâtiments. Ces conclusions ont des implications lourdes de conséquences sur la formulation des politiques officielles en matière de sécurité des bâtiments. La constitution d'associations légales de propriétaires ou l'engagement d'entreprises de gestion immobilière ne sont pas efficaces et ne parviennent pas à résoudre le problème des travaux de construction non autorisées à Hong Kong. Il serait plus efficace de former les communautés et de faire respecter la loi avec une plus grande vigueur. Mots clés: immeubles d'habitation, sécurité des bâtiments, gouvernance, bâtiments résidentiels, annexes non autorisées, travaux de construction non autorisés, Hong Kong

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