One Agency is a revolution in real estate, empowering both individual real estate professionals and established agencies to take control of their own business and their future and bring an entirely new level of service to clients. We are Australia and New Zealand's fastest growing real estate agency network, with new members quickly joining the network throughout Australasia. One Agency Principals are all well-known and respected real estate professionals who use the One Agency brand and technology platform to operate their own business, without operational or systems constraints.