The owners of this terrace house love living in the conservation area, but with a growing family needed more space. The back yard was very small, but there were outbuildings – a shed and a coal store – that gave scope for an extension on a similar footprint. The floor tiles in the extension match the new tiles in the yard, which give a unified sense of space. We changed the staircase round so that the sitting room is now self-contained. Upstairs the two children now have separate bedrooms, and the parents have a new bed space in the loft. Painting the outside black was their idea – and adds sophistication. They told me that the extra space was an absolute godsend during lockdown!