I need some legal advice on property settlement.?

Not familiar with Australian laws, but... As you are not married, there are no marital rights. The house was a gift from his parents and in his name so you have no claim to that. He is responsible for support of the one child that you have together. Otherwise, your position is not good. His offer of $30,000 and a car sounds generous to me. Sorry, but you have put YOURSELF into this position.