The many advantages and benefits of environmental, economic and social, which can be derived from sustainable planning have a great impact in supporting the trends and efforts to protect the environment and preserve the natural resource base for future generations as well as economic gains at the level of the individual and society and the application of these features gives a wide range through which to deal with them In the planning of contemporary sustainable cities, noting that these features can be felt in the Arab Islamic city, achieving those environmental gains, economic and social, which can not be ignored and can be employed in achieving sustainability Environmental contemporary cities. The problem of research is the neglect of environmental influences in the planning of residential communities as a result of the current scientific and technological progress, which reflected the natural and urban environment resulting in many problems of pollution of all kinds and this has a negative impact on the life and health of the population and also highlights the problem of excessive consumption of energy, Significant economic costs and depletion of natural resources. It is noticeable in contemporary planning for residential use that human beings are no longer viewed environmental, social, and economic issues except through specific and interrelated views. The aim of the research is to understand the concept of sustainability and its applicability in housing planning in general, focusing on sustainable housing that is compatible with the environment and social and economic aspects according to the concept of sustainability. The Millennium Village of Greenwich / London and Al-Jamia District in Baghdad / Iraq were selected as a model for studying the schematic and design reality of their respective residential units and the environmental consequences resulting from this reality.