A healthy city connotes a city that is clean, comfortable, safe and healthy for inhabitants, which is achieved through the implementation of the arrangements and agreed activities between communities and local government units. Healthy house is one indicator of a healthy city. A healthy house meets the health requirements as measured by three parameters: components of house, sanitation facilities and the behavior of occupants. This study aimed to analyze if the houses in Medan qualify for the attainment of a healthy city, determine the knowledge of community in terms of healthy house, healthy city and the role of community, and to find out if there is a significant relationship between the role of community and having a healthy house. The study design used is survey with quantitative and qualitative approaches. Research sites were the 21 districts in the city of Medan wherein 400 respondents were selected through proportional random sampling. Data were analyzed quantitatively and qualitatively. The results showed that in the city of Medan, only 30% of houses were healthy and 70% were not. 63.0% of the respondents have good knowledge about healthy house and 57.8% have good knowledge about healthy city. Furthermore, the community perceived to have played a good role as much as 75.5% in the effort to realize a healthy home/city. The community's role has a positive and significant effect on healthy house in efforts to achieve a healthy city in Medan (p = 0.04). It is recommended that the government of Medan City draw up a program of healthy house and healthy city and involve related stakeholders, increase community participation from the beginning of planning stage in order to increase community involvement in the implementation of development and formation of Healthy City Forum.