Green Star FAQs

No, all apartments are not required to be tested for air-tightness in Green Star.

Project teams may test a minimum of 10 dwelling units or 10% of the total number of dwelling units, whichever is greater as sample units to satisfy the Testing Area Requirements.

The sample units selected must include:

• A representative of the lower-most, upper-most, and intermediate floors;
• A representative of the external envelope construction including different façade types and building geometries;
• A representative of each apartment typology (by number of bedrooms, Accessibility/DDA etc.);
• The unit with lowest-performing NatHERS rating

Note: These requirements are not mutually exclusive i.e. a representative unit that meets more than one of the above requirements can be used to demonstrate compliance with each of those requirements. 

All other requirements are to be met as per the submission guidelines.

The surface areas used to calculate permeability shall include the exterior as well as inter-unit walls, floors, and ceilings, including those bordering other dwelling units. Partitions within a dwelling unit shall not be included in the surface area calculation.

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