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Green Star FAQs

FAQ F-00349
Why were normalisation factors introduced in Green Star Buildings v1 for the Life Cycle Impacts credit?

Normalisation was introduced in Green Star Buildings for the Life Cycle Impacts credit following extensive consultation with our Expert Reference Panels and Advisory Groups. Normalisation scales the impact category results according to the global availability of that resource or magnitude of environmental impact. As a credit that intends to help project teams make informed decisions based on the whole-of-life impact of a building, the normalisation factors assist in scaling the importance of the impact categories and improves the meaningfulness of a project team's decision within the global context.

The normalisation factors were calculated by our technical consultant using scientific methods and units that are used by EN 15804+A1 compliant Environmental Product Declarations (EPDs). The GBCA acknowledges the transition to EN 15804+A2 and the different impact categories and units in this new version. The credit will be reviewed with this in mind for future versions of the rating tool.

Rating Tools

This FAQ is related to the following Rating Tools, Categories or Credits:

  • Green Star Buildings v1 / Positive / 26 Life Cycle Impacts


These FAQs are:

  • provided as additional technical assistance for Green Star users.
  • optional and free to use on Green Star projects.

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The GBCA reserves the right to add or remove FAQ at our discretion.

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