Cheers for the replies guys.

What is the cost in receiving a DA from the council. (just wondering from vendors point of view in regard to how much they have committed)

I have received the DA for the block (from the vendor) and it has the “infrastructure charges units” listed @ $40,895 for the (08/09) (ICU valued @ $1.63 a unit). So i am sure there is a CPI that will be applicable to that, But it is a starting point.

If the project was viable, And by viable i mean with 20% margin (100k profit) why would the vendor not proceed with the project?

SO thus far i have:
approx
stamps = $18,000
GST= $18,000
Infrastructure = $40,895
agents selling fees = $20,000
Demolition charges = $?????