This report provides an evidence base to help builders, designers and specifiers to make better-informed decisions around investing in sustainability features. It calculates costs and benefits for a range of sustainability features and resilience options in different scenarios.
Features considered include greater than the minimum required levels of insulation; water conservation measures and rainwater tanks; lighting options; solar water heating; heat pump water heating; photovoltaic generation; resilience to flood, winds and earthquakes; lifetime design and material life cycle cost.