WikiHouse wants to create sets of downloadable dwelling designs for CNC-milled houses that can be assembled without connectors. The parts are interconnected, like cardboard cutout.
The introductory pages on the site promote a grand plan:
Click 'Make this House' from within Google Sketchup and WikiHouse will generate a complete set of milling drawings from your model, which can be used by a CNC cutter to fabricate the house parts.
Article on The Register: http://www.theregister.co.uk/2013/03/01/wikihouse_architect_pitches_print_your_own_house_project/