Perhaps the most obvious attribute of authentic postindustrial production is its decentralizationespecially its character of being distributed over the landscape and community (Lyle, 1994). Thus far, this trend is more visible in the evolution of energy systems, where massive power plant production is giving way to fuel cells, photovoltaic roof shingles and other technologies that are beginning to turn ordinary buildings from being passive consumers of energy into decentralized producers. The typical individual building will likely not become a source of its own materials in the future, but we will nevertheless see massive recycling of existing building materials and assemblies, along with materials production that is much more locally- or regionally-based. And, as I will illustrate in the chapters on deconstruction and natural building, increasing portions of our building materials stock will come