In 2006 Estadium was instructed by the International Bureau of Fiscal Documentation (IBFD) to advise them with their accommodation plans.
Although IBFD originally had plans to relocate and develop their new headquarters, they decided to prolong the lease for their current international headquarters located near the Amsterdam Ring road in January 2009. On behalf of IBFD Estadium negotiated the new lease of this 6.500 m² office building with the owner.