Real estate agent. The Montreal west island real estate agency Keller Williams Prestige is committed to providing their clients with unparalleled real estate service when buying or selling their property. Through regular training, our brokers are constantly evolving to become the best that they can be. They work as a team and learn from top brokers in the industry; we believe that together, everyone achieves more. Our west island real estate brokers are highly skilled, knowledgeable, and professional individuals who will be there to guide you in every step of the buying or selling process.