In 1913 a stone extension was constructed on the western side to enlarge the hall and in 1923 a brick toilet block was added, again on the western side. In 2008, also on the western side toilet doors and an awning were added and the kitchen was modified.The roof is tiled following the fires of 1925 and 1961. This is a single storey brick building in the south-west corner of the precinct. The landscaping of the precinct consisting of the fencing of the property; gardens, trees and shrubs including the topping tree planted after completion of the tower in 1988; terracing and paving; garth wall in the north-west corner; the stone retaining wall in the vicinity of the western end of the Cathedral; and the rock monument celebrating the centenary of the Cathedral and accompanying tree planting on the Cathedral Green. Two Cedar of Lebanon trees planted by Dame Alice Chisolm. A garden and walkway on the south side of the Cathedral established in 2007 as a memorial to Louise Fell. St Saviour's has twelve bells. Eight of these were obtained from St Mark's Church in Leicester, England. They were restored at John Taylor Bell Foundry in Loughborough. The eight bells were "baptised", in the grounds of the cathedral, by the Archbishop of Canterbury, Robert Runcie, and installed ready to ring by October 1988. The eight bells were named after the ships of the First Fleet. In increasing order of size, they are: Supply, Friendship, Lady Penrhyn, Prince of Wales, Charlotte, Scarborough, Alexander and the Tenor bell Sirius, which is the largest bell at . In 1985 a grant was received from the Bicentennial Authority to enable the completion of the tower and spire and to install the rest of the bells which were included in Blacket's original 1871 design. In 1993 two more bells, Golden Grove and Fishburn were added to the top of the bell ring to give the Cathedral a ring of ten bells. The final two trebles, Endeavour and Borrowdale, were added in May 2005, thus completing the peal of twelve bells. Ringing tower bells requires training for several months. The bells swing through a full 360° so that they can be rung in a specific order. The ringer must control the swing of the bell so that they ring in the correct place. Bellringers do not ring by a musical score but by numbers. Special sequences can be rung so that every combination of the bells are rung. The Service Bell is named Mesac, after the first bishop.