I've recently tried to buy rate rolls so I can directly mail owners to purchase particular properties for clients. However, councils have stopped this due to privacy.
If it is a person, you're stuck up stream without a paddle. I've had limited success with facebook, linkedin, google and pipl.com. Another suggestion is looking up the same name in RPdata for other properties (but you can't use their number for marketing). If you are really keen on a property, you might employ a private investigator.
If it is a company/corporate trust, like other people have suggested you can get the ASIC data.