Youve been told, I am a plumber and a builder.
Your refusal to accept opinion other than your own will see the issue reoccour in the future

Basically because theres no need to tile it if its not going to be seen.

Regardless of how the code is interpreted you have a water leak issue causing the vanity suffer watter damage.
Regardless of what the code states, this issue must be resolved.
The shower…

What is your question?

Quality=after tiles
Budget=before tiles

Everything Simeon said is correct.
Everything you have assumed is incorrect.
Defective and non compliant wet area

Extend the WIP into the vacant space

The remediation of damaged neighboring property is typically required prior to occupation. But to be certain you should refer to your DA, it should be included within the approval requirements.

You’ve misunderstood the issue. The expansion joints must be installed vertically, it’s in the code

Some metal frame companies will provide magnetic fixings that allow you to mount items without the need for mechanical fixings.

This is untrue

It’s likely not a leak.
Just not drying after a cold night.
To be sure, wait till summer and check after rain, it’ll probably be dry

These works are not compliant.
Any inspector would pick these as defective.
There is a code to gaps in brickwork and no “fixing” will rectify these.
Any”fixing” undertaken should only…

Like at ground level outside beside the footings?
Is this where you mean?

This is not installed to the manufacturers installation specification and hence is not fit for purpose, voids warranty and possibly not meet code. I’m not sure on the last one…

1:100 fall is required, a drain and the threshold is also required

Does this wall face south?

Your solicitor might be able to help you

Exempt development if the house is existing.
If it’s a new build it’s likely not an issue either but always call council to confirm. They’re usually very helpful.

Should the waterproofing not cover the junction of the tile strip and wall then yes it’ll likely leak should the falls be insufficient or a blockage occur.
Request the waterproofing…

I can’t make out the issue in any pictures but the shower is not compliant if it is leaking and a repair such as you’ve mentioned is likely a temporary…

It is a lot of work to move it but if you’re u happy with it then the expense may be worth it.
Best to ask your builder for a…

It’s a typical building method because it’s economical.
Stud frame and Cladding is also the best method for building in most parts of Australia.
Just be happy with your choice…

You must have a puddle flange at EVERY floor waste.
It’s in the code

BASIX is fairly simple but the thermal comfort potion of BASIX is the most difficult.
It’s best to have an energy assessor rate the house rather than using the…

I once specialized in roof repairs such as this and this sounds like a complex issue therefore I suggest seeking the advice of a professional so they can attend site…

This isn’t code complaint. Check your standards.

This is what is expected in a project home build.
Its unfortunate but necessary to maintain high profitability and lower building costs.
The majority of new home owners don’t have the knowledge…

Simeon is being nice with his response.
How do you intend to design with 20 years of forethought?
Did you imagine the advances in technology could even support a car let…

Over capitalise.
Enjoy yourself.
You only live once, be happy