Renovation of a 1930s end of terrace house in a quiet cul de sacin the sea side town of Bray County Wicklow. A new 30m2 extension was grafted onto the rear of the existing mass concrete shell to provide flow of activity from an open plan kitchen to the sunken living room in the old section of the house.Ecological construction methods were at the forefront of this project, we used wood fibre insulation and intelligent breathing walls with the primary structure expressed in douglas fir and southern yellow pine timbers.