What is the minimum required NatHERS star band across Australia?

According to NCC 2019, for Class 1 and Class 4 buildings, a 6 star energy rating is the minimum requirement. Also, for Class 2 multi-unit developments, an average of 6 star energy rating is required and all units must meet the minimum rating of 5 star.

Under NCC 2022, for a Class 1 or a Class 4 building, a 7 star energy rating is the minimum requirement. Consequently, for Class 2 multi-unit developments, an average of 7 star energy rating is required and all units must meet the minimum rating of 6 star.