Eddie Dilleen is a 33-year-old who claims to own 150 properties. His confidence in property investing cannot be overstated. "To me it's definitely a no-lose game, it's the best way to create wealth in Australia," he says. Mr Dilleen runs his own buyers agency, and his holdings make him one of 166 mega landlords identified by the ATO as owning 20 or more rentals in their own name during the 2022/23 tax year.