A Green Star NZ certification reflects the commitment and leadership of the building owner to green building practices and environmental performance. Green Star NZ addresses the needs of specific building types, such as office buildings, industrial buildings and education buildings, in the design phase, and following construction (the Built phase).  The tools assess the environmental impact that is a direct consequence of a buildings site selection, design, construction, and maintenance. The framework has eight separate environmental impact categories plus an innovation category. Green Star NZ rates a whole building rather than components or materials. It gives credits for materials and components that have been awarded other ecolabels such as Environmental Choice NZ and the Forest Stewardship Council.