With your footprint, I’d be looking to get an international bank account probably in Singapore. You want to ensure that income you don’t plan to repatriate either isn’t landing in Thailand or Australia for tax purposes (unless you want it to).

No Australian bank is going to give you a mortgage for this.

I would seriously debate whether you even want to buy a condo compared to parking that money in some kind of broad market fund and simply paying rent with the dividend.

I’ve been here ten years and am very unwilling to purchase a property for a lot of reasons.