Interesting - thanks for that. I should get a discount off the building then right?
The one issue I know of (to date) is that the property is on a sloping block (maybe 30 degree angle) and so the stormwater will be going into the neighbours garden (behind the house.) I've been advised this will cost a little extra to connect the services of the new building (not by a builder).
Do you guys help sort this out?
RE: Discount for Building
I don't know. I suppose if you've signed a contract that you're legally stuck with it aren't you? If not, then yea, he should pass any savings onto you.
RE: Drainage
oooh ok. 30 degrees is quite a lot.
When the property slopes away from the street, stormwater disposal is definitely an issue that requires careful planning.
By "stormwater will be going into the neighbours yard" I hope you mean there's already a registered drainage easement behind (or on) your lot that services storwater drainage? If not, you can't just 'drain into your neighbours garden'. You'd have to formally ask for a drainage easement. These cost tens of thousands of dollars to do. I expect you know that, so I'll assume there's an existing drainage easement there already (not Sewerage Easement, that's different again)...You can check your Deposited Plan (it's in the contract). Look for a dotted line at your back boundary.It will have a key ( a letter or symbol) and it will say something like 'Eaement for Drainage 1.2m Wide and Variable' ~ something like that.
If there isn't a drainage easement, there is an option via on-site dispersion but this has to be designed very carefully and in accordance with the relevant Australian Standards for Stormwater Drainage (Australian Standard - AS 3500) and in compliance with your Local Council's 'Stormwater Code'. A 30 degree slope usually means designing 'level spreaders' to stop water creating grooves or channels in the soil . The work must also be carried out by a suitably licensed plumber. Your builder will make sure of that I expect.
This is a good example of knowledge being power.
If you know what you're doing, you can save a lot of money. If you don't, you could be up for tens of thousands of dollars for easements, surveyors, engineers etc..
We did 'Virgo's' Dispersion System design last year ourselves (her block also drains to the rear), and we did it for free. The drainage engineer alone would've charged her around $2,000 for this.
There are (very rarely) instances where we are forced to use a hydraulic engineer but this is in extreme cases and we get 'trade' prices from these guys. We pass these savings onto our client (poor bugger is usually already in shock)..
So just be sure your builder is clear and explains what he's doing there before you proceed. I'm sure he knows what he's doing. Just be sure he explains it to you clearly. Feel free to run it by me via PM.
You simply
do not want to get caught out with drainage (nor sewer) issues.