We have a house in Nz which was originally our primary home. We moved to Australia in 2008 and have rented it. We have declared it with Aus tax. We then brought in Perth 5 yr ago in which we live in now. If we are to sell how much capital gains would we have to pay? And if we were to move back to that house in Nz how long do we need to live in it to make it our primary home again .