Landmark Class A, High Rise Office Building in Sherman Oaks. Valley Executive Tower is a 387,843 square-foot, Class-A office property located on the prestigious South-East corner of Sepulveda Blvd and Ventura Blvd. This 21-story office building is one of the largest and most prominent office towers in the San Fernando Valley. It features modern architectural details on its exterior, complimenting its luxurious interior finishes. Terrific location for a corporate headquarters.