Architect Dermot Bannon returns with four new designs for four incredible properties. First stop for Dermot and and QS Claire is Charlestown in Co. Mayo.

In this episode Dermot and Claire aim to help a young family in Palmerstown, Dublin to make the most of the space in their cramped home.

Dermot take on a 1970s seaside bungalow in Sligo.

Dermot teams up with Julian Benson to convert an old Victorian house into four self contained pods, for families of people with Cystic Fibrosis.

Dermot Bannon is in Dublin's North Strand in one of the most challenging builds that Room To Improve has ever seen.