How is the achievement of sustainability goals assessed in LEED?

The achievement of sustainability goals in LEED is assessed through predefined metrics and credit requirements because these guidelines establish specific criteria that projects must meet to earn points toward certification. Each LEED credit has quantifiable benchmarks that relate to sustainable practices, such as water efficiency, energy performance, material reuse, and indoor environmental quality.

These metrics provide a clear framework for evaluating sustainability efforts within a project. By adhering to these established requirements, project teams can systematically assess their strategies, implement sustainable solutions, and verify compliance, ensuring that they meet LEED standards effectively. This structured approach not only promotes accountability but also enhances transparency in how sustainability is measured across various projects.

The other options do not align with the LEED assessment process. The involvement of contractors, project completion time, or public opinion surveys doesn't directly measure sustainability outcomes as defined by LEED criteria. Thus, the correct way to assess sustainable practices remains through the defined metrics and credit requirements set by the LEED rating system.