Much work and thought has been put into creating new communities, as well as restructuring and rebuilding of older ones. Asking about the conditions for sustainable civilization requires one to explore the potential of ecovillages, the impact of “sustainable development” (as it is currently called), and emerging communal structures such as urban homesteading and urban agriculture. Transportation options, town planning, social structures, communal and spiritual values all play a role in developing the kinds of sustainable communities that would have to compose an enduring civilization. Policy recommendations will address the privatization of public goods, use of public monies, and policies that promote or undercut particular types of communal arrangements.