Missouri based Open Source Ecology are developing a modular construction set to build the industrial machines needed to build. The Global Village Construction Set (GVCS) is a 'life-sized lego set' meant to enable the creation of a sustainable society with modern comforts. The toolkit consists of 50 manufacturing and construction devices with interchangeable, modular components. In keeping with their barrier free philosophy, all design, assembly, and budget information for the GVCS is available on the team's wiki.
Watch the video of their working prototype village:
Video: Open Source Ecology