More than one person can be registered on a single home loan, and they are not required to be related or married. Sole ownership is simply when the home loan is registered to one person, but joint ownership (or co-ownership) may entitle you to borrow more based on your combined incomes.

There are many other things to think about when considering joint ownership, not least the length and size of the commitment you're making with that other person, so it's important to consult your lender, solicitor and an Aussie Broker to get the full picture.