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Green Star Rating

Green Star is a voluntary rating scheme to assess the environmental design, efficiency and performance of New Zealand's buildings. The NZ Green Building Council, in partnership with the building industry, developed a suite of rating toolkits applicable to a specific building type and function.

NZ's building Green Star RatingThe aim of the scheme is to:


  • Establish a common language and standard of measurement for green buildings
  • Promote integrated, whole-building design
  • Raise awareness of green building benefits
  • Recognise environmental leadership
  • Reduce the environmental impact of development.

The Green Star suite of rating tools was designed as a three-stage process to match the key phases in a building's lifecycle: design, built and performance. Presently, design and built tools are available for office, industrial and education buildings, and the NZGBC is focused on developing a performance tool.

The current tools assess the environmental impact of a building's site selection, design, construction and maintenance. The framework has eight separate environmental impact categories plus an innovation category.

Credits are awarded within each of the categories based on the building's environmental merits in a range of areas and consider the individual development requirements and impacts of each sector. Points are then weighted and an overall score is calculated, determining the project's Green Star rating.

Green Star