The knowledge base section of this web site includes important information for everyone involved in affordable, sustainable housing. The scale and environmental topic sections provide insight into the environmental issues surrounding project according to specific scales and environmental issues. They are also the portal to detailed information on specific topics, materials, strategies, and assemblies. The Green Communities section provides support for developers and designers using the Green Communities guidelines in their project. The case studies provides insight into the decisions, process, and outcomes of noteworthy projects.