You need to check with the council because the setback would usually include the tank unless they do things differently where you are.
You should check your builder's supplier's website but…

You would need a building consultant who is suitably qualified and very experienced with contracts and who knows what to look for. The examples are too numerous to mention but…

The 3 critical ones are pre contract signing consultation, slab and pre plaster but that is not to say that any others are not important.
This question has been…

When you posted the above saying that the tank was topped up, I was hoping that you had an inexpensive top up device that ensures that the tank always has…

Why there hasn't been a Royal Commission into the building industry a long time before now amazes me.

Thank you for posting this.

Do you have a device that feeds water into the tank to maintain a supply to the pump? If so, these are a good option and you can fit a…

What you have is 'water hammer' caused by the pump generating a pressure wave in the pipe.
Most rainwater harvesting systems are poorly installed and one of many common faults…

You need to say what region you are in when asking for landscaping advice so that people know what your climate has been like lately and give the best advice…

You have an existing thread in this sub forum on this subject but aside from your lawn, what are your weep hole heights in relation to the garden bed visible…

For water from the gutter to get into the house, the water has to overtop the fascia. It sounds like you have a high fronted gutter and the gutter's back…

Try Whirlpool Forums Home lounge. There are countless sparkies on there.
https://forums.whirlpool.net.au/forum/138

Who drew your plans? Are you absolutely sure that you own the copyright?

anu123,
Who employed the building surveyor, you or the builder?

A chain is only as strong as its weakest link.

Same with plumbing which is self certfying, the building surveyor only needs to sight the certificate as 'proof' of compliance.

Builder is required to grade compacted soil away from the slab for site drainage during construction.

You need an industry professional to do a pre contract signing review, a solicitor just doesn't cut it because they don't know what to look for.
There are many things…

This is one of the increasing number of issues that people are now facing with zero boundary lots and the answer to your question comes back to the natural ground…

It is true that it is the way that it has been done for a long time but in the absence of a certified Performance Solution, they have to abide…

Do you know someone with a 3D Printer?

The Standards do call for it to be visible and the brick manufacturers also advise that the DPC should be visible but many builders now have various certified "Performance Solutions"…

Large cracks start off small.
It is impossible to give advice without being on site but taking some subsurface soil moisture samples at various depths may be in order.
Tree roots…

Because the slope is in rooms along one side of the house, it is best to have it investigated for your peace of mind. What is your soil classification?
Degrees of…

Did you read the links that Gaudi posted?

The photos don't show downpipes going under the slab.
The pipes in the photos are not charged and the rectangular downpipes also appear to be metal. You haven't indicated otherwise.
The opening…