Devonshire House is a 186,000 square foot office building in London’s West End, the highest rent submarket in the city. This building, which is “listed” by the government as a property of special architectural or historic interest, was the London residence of the Dukes of Devonshire during the 18th and 19th centuries. Witkoff acquired Devonshire House in 2007 and undertook a comprehensive redevelopment. Upon completion, it attracted high-profile tenants, including Bain Capital, Highbridge, and Boston Consulting Group. In 2013, Witkoff sold Devonshire House at a record price per square foot for an office building in the Western Hemisphere.