Some states offer this - I know queensland has a PPR stamp duty rate and an investor rate.

Land is calculated on the investor rate - which is higher - because there is no house on it yet, regardless of whether or not there is a house going to be built on it.

Thats how it works in Queensland anyway.

In tassie everyone is charged a high rate - no matter if its land, PPR or investment purposes.
Yeah I'm not sure about this either, but when I went onto the calculator I put in WA and primary residence, so I guess it worked out any discounts for that state if there are any