I had a chat with the strata manager who told me that NBN need to install new cables to each unit.
Therefore NBN will drill holes from the electricity room (where the street fibre cable ends) to each units.
They will drill through every floor in the building (4 in total) to the floor common area, from there it will be split into each unit front doors, which then will be taken over by the ISPs, whom will drill the wall into the inside of the unit.
I was shocked with so much drilling involved, and how ugly and messy it will look. I can't understand why they can't use the existing Foxtel cables or Telephone (Cat6).
I am campaigning for another alternative, even if it means ditching Foxtel forever (who needs them anyway when you have NBN). I'm not very techy, do you know if it is the only solution?
Edit: The plans from the nbn check address site showed that it is using HFC network.
TLDR: NBN wants to install new cables (hfc) inside the building and therefore need to drill holes through every floor and walls to each unit.