Hey what up fellow aussie .
Looks like you have nothing to do with the project itself and looking to invest in the person or company that persuaded you to do so. You are not in control of any results. So make sure that the company has a good record at least.
Or get involved in the property development yourself
Here is an article about it apt for Australia: https://propertyupdate.com.au/how-to-get-started-in-property-development-article/