Green Star FAQs

Where a multi-pass heat pump is used for domestic hot water and thereby COP varies across successive heating stages, projects may use the COP at 20°C ambient and 45°C leaving water temperature to demonstrate a minimum COP of 3.0 in accordance with the Domestic Hot Water Generation criteria under Energy Use - Residential Pathway.

Where a credit criterion has a ‘Check in’ submission frequency, project teams are required to confirm annually that no changes have occurred to the building or its management relevant to that criterion that would affect the previously submitted evidence. This requirement is satisfied by indicating ‘No Change’ in the relevant submission template and scorecard for that credit, accompanied by a brief...

In August 2025, the GBCA published an update advising that the scheduled 2026 Climate Positive Pathway rules within Green Star Buildings v1 would not come into effect for any star rating.  This means that the Climate Positive Pathway requirements known as the 2023 rules continued to apply to new projects registering under Green Star Buildings v1. The extension was provided to...

Projects can demonstrate that cycling equipment is safely secured by demonstrating that it is designed in accordance with Table 1.1 from AS 2890.3:2015 Parking facilities, Part 3: Bicycle parking. Bicycle parking facilities are classified in AS2890.3 according to the level of security that is relevant to its use. It is up to the project team to determine what is most appropriate...

Yes. In line with NABERS Embodied Carbon Rules version 2.1, the preferred emission factor data for a specific material is derived from an independently or third party-verified process LCA. This can be an EPD, a carbon footprint declaration (e.g. a PCF) or a Climate Active Product Certification. A PCF can be used as evidence for a product’s emission factor in...