Since the 21st century, major cities in Vietnam faced housing shortage and there was a lack in office spaces. As a result, construction companies from over seas provided mixed-use apartment as a new type of urban housing. A large number of mixed-use apartments are built in big cities such as Hanoi and Ho-chi-minh City. However, research on mixed-use housing in Vietnam is insufficient. Therefore, the main purpose of this study is to understand the characteristics of mixed-use apartments and have an effect on the development of urban housing in Vietnam. This study focuses on examining the planning characteristics of mixed-use apartments in Hanoi. The research will be based on 10 mixed-use apartments that are already built or expected to be built in a few years. Therefore, this study starts by looking into the history of the Vietnamese urban housing. The study focuses on the transformation of urban housing since 2000. Then, the study will mainly focus on examining the mixed-use apartments in different aspects, in order to analyze the planning characteristics.