Thanks for all the information. Extremely helpful. Am I correct in saying that the storm water (gutters etc) need to be completed by someone that has a roof plumbing license (NSW)? The builder can't just do it himself?

Right so the work has to be completed by the plumber not the builder and there is no way they could or would or should sign off on it?

This is what he has referred - HOME BUILDING ACT 1989 - SECT 18F Defences 18F Defences (1) In proceedings for a breach of a statutory warranty, it is a defence for the defendant to prove that the deficiencies of which the plaintiff complains arise from-- (a) instructions given by the person for whom...

https://forum.homeone.com.au/u/106645_1673666937.png Thanks for the response. This is basically what it would look like (sorry not to scale). I'm guessing the sensible thing to do would be to keep it straight from where the building line steps out and add a roof on the other side that drains in. Li...

Correct. My original question was asking why they don't allow for a change in direction?

Builder has agreed to do it. They just want us to sign a letter saying it's not to standard.

I was wondering why box gutters are not allowed to have a change in direction in them? Are you able to direct your builder to still complete one which has a change of direction?

Polyurethane Joint Sealant, ARDEX RA 040 - One Component, Polyurethane Based Joint Sealant (ardexaustralia.com) I went with an Ardex product in the end.

What is the best product to use to seal beneath coping paver and the top of a fibreglass pool ?

I'm wondering if anyone knows if companies like bradnams and Steg provide price lists for their standard windows to builders? If anyone has one could they send it to me please?

Based on that I would have thought 10-11k is more reasonable

400mm diameter

What has everyone paid for concrete piering? I've been quoted a rate of $180 per metre for 100m so $18,000. Is that reasonable?

What do you think is a reasonable cost for the work? As in a commercial rate

My calculations have it costing about 8-9k including the margin.

$30k

The contract clearly states where work is agreed upon but not priced upfront due to unknown facts or lack of time then the cost will be the cost to the builder plus a builder's margin - It is very clear in that regard. All I'm trying to determine from my original post is a rough estimate of the cost...

We haven't signed a variation. The contract states that for a variation that isn't agreed on upfront the cost to the client is the cost of the works to the builder + a builder's margin. So I believe in this scenario he does have to provide a breakdown of costs. I'd rather not start referring to the ...

It was excavated lower at the back to provide some storage under the bearers and joists (split-level house). Updated engineering was provided and paid for. The extra work required was to slightly increase the footings which needed to be poured anyway and amounted to an extra cubic metre of concrete ...