WASHINGTON, D.C. — The Seattle-based law firm Davis Wright Termaine has leased 49,814 square feet of office space in Washington. The property, located at 1919 Pennsylvania Ave., is owned by SITQ and Tishman Speyer. The firm will occupy the entire eighth floor and a portion of the seventh floor when it moves into the new space in July 2010. The firm is currently located in the building, but this new lease allows the company to consolidate and expand. Brokers from Woodmark, CB Richard Ellis and Century Pacific represented the tenant.