Additional residences for staff accommodation were introduced in 1959, 1984 and 1986. A tennis court and swimming pool were built in 1959-1960. Air conditioning services were first introduced in 1957 and were extended in 1978. Refurbishment of the original section of Fernberg, referred to as the guest wing, was carried out in 1981-82. A new guard house was constructed in 1987 and substantial internal works involving the refurbishment of the reception areas were also carried out in the same year. The main house underwent major external refurbishment and painting again in 1992.