This is a points-based system. There is a checklist to tally points and a guide document to explain the requirements. There is a single point-threshold that is based on building use, with consideration of degree of completion. The usual "green" categories are represented: Site/water conservation; recycling and reuse; energy; renewable energy; indoor air quality; and innovation. There are some mandatory requirements, but there is also flexibility to reach the threshold along any path. The innovation category allows creativity or the application of the newest methods and materials.