 A columbarium was also constructed directly behind the main church building.Previously, Fr Tay was also involved in the construction of a columbarium in the Church of St Theresa, as well as the establishment of the Church of the Holy Trinity which has since become the largest parish in Singapore.The church comprises a main church building, where Masses are celebrated, a 3-storey Parish Welfare Hall, as well as a 7½ storey Community Building which sits on freehold land beside the Church.