Washington Mutual Inc. leased the entire 7th floor of the 12-story, 244,690-square-foot, Class-A US Sprint Building at 535 Anton Blvd. in Costa Mesa. The five-year lease for 20,168 square feet is valued at $2.612 million and will commence sometime in November, as soon as the T.I.'s, which are already in progress, are complete. The tenant is relocating from its current location at 3200 Park Center Drive, also in Costa Mesa. The company's new location offers amenities such as on-site management, a courtyard, foodservice, and is located within walking distance to countless retail and restaurant locations. Toliver Morris and Brian Harnetiaux of McCarthy Cook & Co. represented the landlord, in-house. John Harty and Michael Coppin of Trammell Crow Co. represented Washington Mutual.