Retreat can effectively reduce exposure of urban residents to coastal hazards and provide opportunity for re-establishment of ecosystem services . But there is high confidence that it can sever cultural ties to the coast  and lead to negative and inequitable socioeconomic effects for resettled communities if not planned and implemented in ways that are inclusive and just and address cultural, place-attachment and livelihood considerations , as well as the rights and practices of Indigenous People . If planned well ahead and aligned with social goals, pathways to managed retreat can achieve positive outcomes and provide opportunities for transformation of coastal C&S . There is medium confidence that the availability of suitable and affordable land as well as appropriate financing is a major bottleneck for planned relocation , particularly in very dense mega-urban areas  and crowded small islands .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report