Soundproofing regulations in Australia

Whilst I am not building, I thought Homeone may have the most knowledgeable people on this subject.

My day job involves working in the Gigahertz range and I've seen the effects of new office meeting rooms, so I have some knowledge in a related field.

Most old apartments I've lived in have had poor sound attenuation and pretty much all newer apartments in various cities/countries have been superior. I realise new apartment build quality can often be poor so am hoping to find something newish that is actually decent.

Music is major part of my life (listening, not playing) and I like it at a decent volume often but definitely do not want to annoy the neighbours. This leads to the following questions which will hopefully help when I'm looking to buy a newish (>2010) apartment.

1a) Are there Australia regulations / building codes that mandate the minimum attenuation between apartments, likely after a certain year of construction?
1b) If not Australia-wide, are there usually state or council-based?

2) I've seen reference to the ISO standard 717.1 but also AS2107 but it's not clear if these are part of any regulations or are just recommendations?

3) Where can I find whether an apartment was building to any of these standards?

4) I've seen references to an "Acoustics report". Is this testing performed post-construction and if so, how would I get a copy?