- JPMorgan Chase is notifying landlords it will pull out of all the downtown Seattle office space rented by Washington Mutual by the end of March. The New York bank is laying off 80 percent of WaMu's Seattle work force and consolidating the 800 remaining office workers into the WaMu Center headquarters building it owns downtown. ... WaMu leased about 700,000 square feet in Seattle, according to brokers and building owners.