Williams, an artist and wood-turner originally from Liverpool, has been living in Letterfrack for nearly thirty years. She lives in a two-storey artisan cottage with her children Florence and Daniel. Her mother was from the area. Clutter includes wooden chairs hanging from her sitting room wall, an old cash register, several stained glass windows, lots of handbags and an elephant-calling hat.

Barry's grandparents bought the house on South Circular Road in 1924 and Barry has lived there all his life. A home to three generations of the same family. Barry worked as a post office driver for twenty five years before his retirement, a keen pigeon fancier he used to cycle to races with his pigeons on the back of his bike. He's still in contact with racing crowd but no longer attends races, due to his arthritis. His childhood friend Rita Gill lives around the corner and every week Barry and Gill go to their local pub. Despite the fact they have been lifelong friends, Gill has never been inside Barry's house until now. Clutter includes newspapers from 1962, childhood toys and Barry's old ration book.

Guy and Nolan claim to live in the "largest toy box in Ireland". The couple are both self-employed and live with their two children, five-year-old Laura and two-year-old Brenna. Nolan is an insurance broker and Guy runs an on-line baby store and is a baby masseuse. It is impossible to walk down their hallway. It contains, amongst other things, Guy's grandmother's hundred-year-old piano that they inherited six months ago. Even though it cannot be repaired Guy refuses to part with it. The kitchen has two tables but the family has to eat standing up or else they retreat to the sitting room with trays. Guy blames the birth of their second child Brenna. Guy suffered from postnatal depression that was further exacerbated by Brenna being very ill for the first six months.

Carolann is a full-time mother who lives with her two sons, 12-year-old Conor and 10-year-old Rónán. Conor recently received treatment for a rare form of cancer and their family routine has been disrupted as a result. Conor spent an amount of time in hospital with his mother, Rónán stayed with family friends and their dogs Ruby and Neo were fostered. Carolann wants the team to tackle the spare bedroom and transform it into a bedroom and play area for her boys. She would like to convert the bedroom the boys use into a study and guest bedroom.

Kay is slowly coming to terms with her children's deaprture from the family home. She still buys three of everything, one for each sibling and this has added to the clutter in her home. Her living room is described as "completely unusable", whilst the tumble dryer is located in her bedroom. She also has the contents of several charity shops in her house.

Ashley (who is Chinese but was raised in Malaysia) is a retired pilot. He studies cookery in Killybegs. Anne is retired but works part-time in a call centre in Carrick-on-Shannon. The problem is not the living quarters of their house. Their clutter is in the loft and attic. This is largely because they have moved from a large house to a cottage. The two have travelled extensively and have collected items from across the world. They have no storage and Ashley desires a study area to complete his cookery studies.