In Maynooth, Dermot redesigns George and Sinead's 1850s coach house only to discover the entire building has been compromised by a parasitic fungus.
A special edition of the show where Dermot revisits three of his favourite builds from earlier series: the Longford publicans he convinced the embrace the void, a couple moving home from California to Bishopstown and 14 year old Michaels wheelchair accessible semi-d in Malahide.
