From 2009 to 2016 Allen served as Dean of Taranaki Cathedral. His time at the new cathedral was marked with tragedy through the loss of his daughter, and a number of significant events. This included ;  In July 2014, prompted by the loss of their daughter, the Allens decided to sell up their family home  and to use the funds to establish a charitable trust which would offer a place for people to stay when going through tragedy - with the specific aim of suicide prevention. This was inspired by Allen's experience of pastoral work with families who had lost a loved-one to suicide where there was nowhere to turn to for support. The build of the facility was funded by the Allens' donation; by local businesses, and others in the community who had been affected by suicide - and through grants. The facility opened in March 2017 and offers free breaks (or support at home) for people dealing with tragedy or where people are dealing with suicidal thoughts. The Allen family were nominated and chosen as Taranaki Daily News Person of the year 2017 for their work through Taranaki Retreat.