point not missed, just a suitable recommendation for someone who doesn't have any experience using drafting software and who is not super tech savy.
BIM = overkill, no question.

sketchup vote here also. you don't need BIM- way to specialised, at that point it would be in the realm of a professional service.

Regulations can be found here:
http://www.vba.vic.gov.au/__data/assets ... s-2006.pdf
You are looking for regulation 419.
As others have mentioned, the definition of a habitable room is important.
That definition is:
"Any room…

wow, what a crap situation- sorry to hear.
Did you have a contract in place with them, and are they a registered building practitioner, and did they have insurance etc? For…

in the case of a sink requirement, it does not need to be a laundry sink specifically- your kitchen sink would be adequate as long as the washing machine is…

In a space that small, I'd think about options a little bit outside the box. If you were to run a strip of bench heigh joinery right along the long…