1965. Concreting on that wing was finished in November 1964. Completion was pushed back from the start of 1966 by a year due to the rail companies failing to vault the nearby railway line that prevented access to the ground floor. The wing was completed on 1 February 1967, with the first civil servants moving in three months later. The three-month gap was due to disagreements about the conditions of the lease. The Belgian state was to lease the whole building to the Commission starting from when the work was finished, but the other member states found the cost excessive and wanted to explore other options, gaining a lease for the one and only completed wing instead. The lease came into effect on 1 May 1967 and cost €545,366 (the whole building would be €4.82 million, a reduction of €2.48 million taking into account construction costs). The building was only fully occupied at the beginning of September of that year. Expansion However, from the start of the project, it was clear that the commission would expand beyond the capacity of the Berlaymont. The Charlemagne building became available for the commission. Furthermore, there was a building on Rue Archimède, this would allow the commission to concentrate itself in these buildings around the Schuman Roundabout and vacate the outer office complex. The cost of this deterred the council from approving the plan, seeing the rent being driven too high. The commission also wanted to occupy the whole of the Berlaymont, which it shared with the Council and Parliament. The public most associated the commission with the building and it was seen as a matter of pride that they occupy the entire building. Doing so would give them more room and if they occupied that with the Joyeuse Entrée building which it had before, they would have enough space and the Charlemagne building could be occupied entirely by the council. This would mean they could communicate well but not have to work in the same building. The Council eventually agreed but moved into a different building on the roundabout. Renovation Renovation of the building became the responsibility of the Belgian state when it bought the Berlaymont from OSSOM in 1985, but put off any work due to budgetary constraints. The Commission complained and Belgium offered to sell the building to them at a reduced rate (the rent was already half) but as the