IBM sold the main building in 2005. In November 2015 IBM sold two more buildings. In October 2024 IBM left the North Harbour site and moved its Headquarters to
IBM Hursley.
Construction The site was chosen in 1969, and drained during 1971 under direction of
Grontmij N.V. of the Netherlands. In 1972 construction of the lake took place, directly bounded to the south by the construction of the M27 embankment. The foundations were built in 1973, with 30 m-deep piles. The building was formed with pre-cast concrete sections, built on the piles. Structural engineering and architecture was by
Arup Associates. It was built by Taylor Woodrow Construction. It cost £17.2m.
Opening Prince Philip, Duke of Edinburgh opened the site on Friday 3 December 1976. The Prince had flown by aircraft, being met by
William Harris, 6th Earl of Malmesbury, the
Lord Lieutenant of Hampshire. IBM also had ten acres at Interchange Park, a nearby manufacturing plant, which opened in 1967.
Visits • Prince Philip attended a dinner at the site at 5pm on Friday 10 April 1992, representing the
National Playing Fields Association ==Structure==