Sustainability drivers, Policy and legislation. Cost issues: Cost information, Costed exemplars, Adding value through design, Cost and quality benefits, Whole-life costs. Appraisal tools and techniques: Benchmarking, Critical path tools, Targeting tools. Materials selection: The life cycle approach, Resource base, Processing and production, Toxicity, Passive environmental control, Local issues, Durability, Maintenance, Lifespans. Low-impact construction, Heating, Electrical installations, Lighting and day lighting, Ventilation and cooling strategies. Renewable technology, Water and sewage management, Urban ecology