Irene and Anthony Zambra live with their four children in Castleknock; they bought their semi-detached home 11 years ago and it came with an extension which the Zambras use as a kitchen and dining area.

Dermot is in Clontarf, with Denise and Ben who desperately want a second bathroom for their family home. However, their budget is limited.

Catherine Bennett and her youngest daughter Sarah Jane are keen to downsize from their huge 13-bedroom house in Mullingar. They're planning to move down the road, where they also own a 3-bed bungalow that's been uninhabited for the last nine years.

Dermot faces a unique challenge in Clane, Co. Kildare.

Dermot helps Senator Katherine Zappone and Dr. Ann Louise Gilligan, who share a former hunting lodge, built in the early 20th century in Brittas, West County Dublin.

Desperate for more space, a couple with two young daughters, who have long since outgrown their tiny cottage in Killawalla outside Westport, engage Dermot to help.