FHOG and Stamp Duty Concessions

Hi All, I’m currently in the early stages of purchasing an investment property with 2 family members all with equal share (Property worth around $400,000). Of the 3 investors, 1 has purchased a home which they live in and exhausted their FHOG. The other 2 investors have never owned any property.

My question is would we be entitled to any stamp duty concession on a pro rata rate (ie 66%)? Or would either of the 2 investors be entitled to any portion of the FHOG if they decided to live in it upon purchasing? Or does including one person who has previously owned property throw these benefits out the window?

 Cheers, Jimmy