ITASCA, ILL. — HSBC-North America is planning to construct a 304,000-square-foot building in Itasca to for a new corporate facility, which will consolidate HSBC’s five existing locations in suburban Chicago. Construction is expected to begin in the fall, with occupancy slated for the third quarter of 2010. Elaine Melonides, Dan McCarthy and Meredith O’Connor of Jones Lang LaSalle negotiated the 15-year build-to-suit lease. The Itasca development is the second phase of HSBC’s plan to consolidate nine of its facilities. Jones Lang LaSalle also worked with HSBC on the first phase of development, which included the company’s new 550,000-square-foot North American headquarters in Mettawa, Ill.