
When do you start engaging Builders? Titling is 12m away.
I agree with Althom. Though it certainly doesn't hurt to start browsing through display homes to get an idea of what you're after.

Alfresco floor doesn't come as standard?
From a builder we've spoken to, yes it's normal to not be included. They told us concrete is only included inside the house, anything outside will cost extra (alfresco, driveway,…

Tiles - difference between $30 and $60 tiles in the bathroom
Porcelain tiles will be stronger than ceramic.

Tiles - difference between $30 and $60 tiles in the bathroom
As long as they're glazed tiles they'll both be the same to clean/maintain.

Tiles - difference between $30 and $60 tiles in the bathroom
At the $30/m2 price point I’d say they’d be ceramic tiles. $60/m2 you’d probably be looking at a decent porcelain tile.
Really just depends on what you’d prefer.

URGENT HELP NEEDED BAL RATING
Our builder has estimated around $3,500 for a BAL 19. Windows don't need to be double glazed, just 5mm toughened glass I believe.

Fixing loose tile with no spare tiles available
Have you got a heat gun by any chance? A mate of mine just went through a similar thing and managed to get two tiles up in one piece by…

Changing windows after DA approval
We spoke to our local council and were told any changes (even minor) would require an amendment.