GreenAnswers.com makes a strong case for the eco-friendly features that can comprise prefabricated home.  In terms of time, energy, and materials used, this blueprint of production is more efficient than stick built.  Highly efficient fixtures, appliances, and heating/cooling systems save money and energy.  Reclaimed materials are utilized when possible, cachement systems store water for irrigation, while sink and shower water re-circulates through the toilet.  The article concludes, “Moving into a ‘green’ future, our neighborhoods may look a whole lot different than they do now.”