NAR; MLS. Realty Trust Group, Inc. is a quality niche market, full service real estate brokerage. The firm has strategically located offices in Portland’s close-in upper end neighborhoods. Realty Trust has particular expertise in knowing the finest neighborhoods in Portland, as well as the homes of architectural distinction. Realty Trust Group, due to its smaller, more niche oriented agents and brokers, is the highest per agent producing real estate firm in the area.