The statement "Our building design will save 30% less water than a typical code-compliant building" relates best to the Performance Perspective.
The Performance Perspective places importance on the measurable outcomes of a system, product, or service. It prioritizes the effectiveness of the system/product/service over its structure or components. Specifically, it assesses the water-saving performance of a building design in comparison to a typical code compliant building. Designers can use this perspective to assess the effectiveness of their design decisions and make necessary improvements.