Austudy: Can an Unofficial Rental Contract Be Accepted?

Hi, I am currently receiving Austudy. To prove my living situation and expenses, I provided my rental contract from a legitimate agent. However, I will be pursuing further studies and moving to a smaller town next year, where rental options are very limited.

If I find a rental property with a private landlord who provides a simple contract that may not be as official as one from an agent, and the landlord does not go through the full process of registering me as a tenant, would that be acceptable for my Austudy application? I don’t need to start a new application, but I do need to update my living expenses.

Thank you!