When Dublin born Eilín O'Carroll and her South African husband David Pansegrouw returned from the UK to live in Ireland - they couldn't have picked a better time.
With property prices bottomed out, they bought the austere Firmount House near Clane - complete with an adjoining, long-abandoned 1930s property called the Doctor's House, which they want to refurbish and move into with their 3 year-old identical twin sons.
With the unrelenting pressure of a tiny budget, a totally unrealistic schedule and two headstrong clients who want to manage the entire project themselves while holding down full time jobs, this is Dermot's most challenging and frustrating build to date.
What's more - with the odds stacked against him, Eilín and David in full control and QS Patricia Power excluded from the project, the architect is all on his own.
Even before Dermot can create a set of working drawings, independent contractors Johnny and Liam are put to work, basing the entire project on a rough drawing sketched by Dermot during his first site visit.
As the completion deadline looms, the old building throws up a series of obstacles, the plucky contractors attempt to wrestle floor to ceiling windows and an indoor barbeque room into the crumbling 80 year-old house.
As if that's not enough, Eilín presents Dermot with a request for the single most unlikely architectural feature he's ever been asked to design: a tubular indoor slide.
Will the Doctor's House be finished on time? More to the point: will it ever be finished at all?
Watch this episode of Room to Improve on the 24th November 9.30pm on RTÉ ONE.
For more information on the new series of Room to Improve please contact COCO Television on 01-4970817 or email firstname.lastname@example.org