Perrett was ordained to the transitional diaconate on 15 November 2024 in Brisbane by Bishop Ken Howell, then auxiliary bishop of Brisbane, who was later appointed Bishop of Toowoomba.[5]
He was ordained to the priesthood on 3 July 2025 at St Patrick's Cathedral, Toowoomba.[4] The event was a significant milestone for the Diocese and was the first ordination by Bishop Howell, attended by over 500 people despite poor weather.[1] His ordination received significant local and national media coverage as he became the youngest Catholic priest in Australia.[6][4][7]
He celebrated his Thanksgiving Mass in Stanthorpe the following day, 4 July.[4]