Cathedral of St Michael and St John a rare example of one of only four 19th century Cathedrals in NSW and is the second Cathedral to be built in the colony. The design of the building is one of only a few prepared by English architect Charles Hansom for use in Australia and notably modelled on St Osburg's Church in Coventry dating from the 1840s. The place is important in demonstrating the principal characteristics of a class of cultural or natural places/environments in New South Wales. The Cathedral of Saints Michael and John is representative example of a mid 19thbcentury Catholic Cathedral which was established during a
Cathedral of St Michael and St John period of early settlement and population growth west of the Blue Mountains. Its growth and development as a building reflects its growth and change as tan important administrative and spiritual centre for the catholic population west of the mountains and in the greater west of NSW. As it is currently configured, the former St Mary's Primary School is significant as a representative example of the design and attributes of Catholic educational institutions in the early part of the 20th century Cathedral of St Michael and St John Cathedral of St Michael and St John is a heritage-listed cathedral at 107