Aging of building stock is emerging. Open Building as a sustainable approach to deal with the problems associated
with the aging housing stock is seldom applied in high-rise, densely populated built environment. With aims to identify
the constraints and seek rooms for Open Building implementation in aforementioned context, a survey of 495
building layout plans from ten major housing estates in Hong Kong is conducted. The floor plans are analysed against
the Open Building characteristics and criteria laid down by Tiuri (1998). Facts and obstacles of achieving Open
Building in the territory are unearthed, and opportunities for implementation are then discussed.
The layout and structure of the surveyed private residential buildings in Hong Kong are very much alike. They are
in fact closed buildings without the capacity to adapt, so any change in user requirements cannot be accommodated
easily. Implementing Open Building using flexible and green fittings remains a viable option that enables transformation
in existing housing stock.
Keywords: Aging Building Stock, Building Layouts, Existing Housing, High-Rise Built Environment.
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