Does Section J of NCC Vol 1 apply to apartments in NSW?

The whole of Section J does not apply to multi-unit residential buildings in NSW. Only the general requirements of Part J4 (Building Fabric), Part J5 (Building Sealing), Part J6 (Air-conditioning and Ventilation, with the exclusion of J6D10 Space Heating), Part J8 (Heated Water Supply), and Part J9 (Energy monitoring and on-site distributed energy resources) apply in NSW. The rest of the requirements are addressed in BASIX and other regulations.