Hanoi is the largest city in Vietnam. It is a political and socio-economic center, where attracting planners’ and environmentalist’s interests. Nowadays, Hanoi has been facing problems of rapid urbanization like many major cities in developing countries. Major commercial activity and pressure occur on almost all streets of the Ancient Quarter and causing local housing issues in a different socio-economic context. This paper aims to provide a deep view of housing issues and tube-house heritage in Vietnam referenced shop-houses in Singapore, Thailand, and Malaysia, respectively. The research used methods collecting primary data (observation, purposeful discussion) and secondary data to clarify factors, which are related to tube-house in the Quarter. It also presents the findings of such developmental history of tube-house, its typical structure, composition, and construction method as considerably important foundations for conservation activities. To enhance conservation strategy and improve “spirit” protection of Ancient Quarter for a better living environment to the year 2025, a framework for tube-house preservation covering “Inside-to-Outside” approach is proposed accordingly.
