London is facing a housing shortage but at the same time blessed to have a conglomeration of experimental post-war high-rise social housing which are unfortunately badly maintained. Instead of restocking housing by demolishing the current, many existing post-war estates should serve as scaffold to building new communities. Existing community density and building proportions will guide the new housing density and structural composition respectively. The proposed housing attachment will revitalize the community life by creating a flexible common space in between the new and existing in the sky. This space aims at recalibrating the social programs relevant for revitalizing the shared community between current estate’s residents and future tenants.