About Gunn & Co. The Williamstown office was established by the company's founder Anthony Gunn in 1998, originally trading as Wilson Pride and Century 21. Since then, Gunn & Co has established a proud reputation for reliability, honesty, integrity and our ability to achieve the highest prices for our sellers and landlords. Gunn & Co has attracted and retained the best people in the business, with current employees enjoying years with the office. We support them with a business environment and proven systems that give them a decisive edge over others. We do business with heart and purpose. Call us in to experience a refreshing approach to Real-Estate. For appraisals please call 03 9397 5555.