Urban areas are considered as the integrated systems which are consisted of structures, environment and people, as well as they are holding the socio-economic activities that constitute the fundamentals of the everyday life. Providing the integration of the systems, which constitute the urban areas is significant in the sense that providing the maintenance of the daily life. In this context, the places, where aforesaid socioeconomic activities going on are the components of the built environment in the urban areas. Urban planning within this sense is conceived as the most important tool, which shape the components of the urban built environment. Land use, density and neighbourhood design decisions related with the urban space have a crucial role in structuring the built environment where we are living in and the built environment has the ability of directly affecting the daily life of its inhabitants. In order to determine these effects, it is required to measure the components, which shape the built environment. In this context, a method on the neighbourhood unit scale has been proposed to enable researchers to analyse numerically the built environment within the scope of land use diversity, density situation and whether the certain neighbourhood design criteria are provided, which are the results of the planning decisions related with land use, density and neighbourhood design, respectively. This proposed method could be applied to different neighbourhoods, by considering various sub-criteria. Hereby, existing situation of the built environment, in the context of land use diversity, density and neighbourhood design could be analysed numerically. Therefore, it would be possible to determine whether there is a correlation among the obtained results with the travel behaviour, medical condition (as obesity, mental health etc.), household residential choice, sense of community and place attachment etc. of the inhabitants. As well, it would be possible to confirm if there is a relation between the results of the planning decisions in the sense of land use, density and neighbourhood design characteristics of the built environment with social, environmental and economical sustainability.