is the property in mentone?
go and see a decent broker they will get it through in your name only or 99% to u and 1% ur mum
ditch the branch and westpac
there are many ways to skin a cat but by dealing with a branch muppett u r using a blunt knife
u should be able to get this 99%/1%
will make the transfer costs, capital gains and stamp duty insignificant
i would suggest avoiding cba for this transaction