Several are now in the process of development in Californiain Cabazon, San Leandro and Berkeley. They have great potential to connect construction and manufacturing activity, particularly through interfacing with eco-industrial parks and networks (Lowe, 1997). The development of RR parks would go hand-in-hand with the creation of secondary materials industry, fully closing the loop of regional materials cycles. The generalization of such a commitment by local, provincial and state governments to this level of mining the waste stream would clearly be a revolutionary development. It would create conditions to facilitate a breakthrough on the front end of building and product design, to actively encourage design for disassembly and deconstructioneffecting in turn a further transformation of deconstruction work.