Serving Buyers and Sellers in all Price Ranges. Cascade Sotheby’s International Realty was established in 2006 and serves diverse communities across Oregon and SW Washington. With 380 brokers and 16 offices, the firm has become the most effective real estate brokerage in the Pacific Northwest. Our brokers are masters of their craft, combining local expertise and global connections to set the standard for real estate guidance. This exceptional team shares one belief—your best life begins with a home and way of life that inspires you.