Coastal regions are areas of high ecological and economic importance. These areas do not exceed 12% of the urban areas in the world, although 45% of the world’s population lives there. Countries build new cities in coastal areas, seeking the scenic value of these areas. However, the great ignorance of the natural and environmental fragility of such areas has led to the development of high-density cities, destroying the natural ecosystems and biodiversity of these areas. Nowadays, most coastal regions are not only suffering from poor unsustainable development among most of their cities but also the high threat of being lying exposed without any defensive means against the high threat of natural and environmental disasters. There is a massive need for a new approach that may mitigate the negative impact of the poor developments, restore the nature of eco defensive systems, and increase the resilience of such cities against natural and environmental threats. The study develops a new approach that can be efficiently integrated through the traditional planning process for coastal communities. The adapted methodology aims to conduct a correlative analytical study among the most effective emerging approaches for the sustainable planning of coastal communities. Such a study reveals the ability of contingency planning to increase the sustainability of such communities. Furthermore, the paper profoundly studied the contingency planning process for coastal communities correlated with the traditional planning process for Egyptian coastal communities and cities. This study innovated a new planning process that can fulfill the development requirements while mitigating their impacts, maintaining/restoring the ecosystems, and increasing the resilience of the Egyptian coastal communities and cities.