Established in 2005, The Property Investors Alliance is one of Australiaâs largest and fastest growing property investment and Real Estate companies, currently providing services to more than 10,000 private investors, as well as selling residential apartment projects on behalf of some of Australiaâs leading property developers. PIA provides opportunities for investors to build personal wealth with the aim of achieving financial freedom through residential property investment. PIA offers a streamlined investment platform, property consultancy and property management service â providing a one-stop-shop for individuals and families looking to generate personal wealth and achieve financial freedom through property investment.