Can I lend money from a US dune at their lower interest rates for a home mortgage within Australia?

Probably not. Most US banks will not lend money on property outside the US.
You can probably find that banks surrounded by Australia can arrange foreign loans for you. They will take care of the details.

Note that this is risky behavior. If the exchange rate go the other way, then you can catch f*cked up big time. How are you at predicting the future exchange rate? I'm not so hot at it, myself.

Unless you are earning USD, it's probably best to stay away from USD loans.
This is a remarkably good question, as after shopping around, i cant find any showy deals to refinance too any more (all the banks and credit union are all screwing us). I too considered an over sea home loan, but havent really looked more into it. I would contact the overseas bank directly tho, dont do thru Aust brokers...

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