The existing grand country house was built in 1923 and designed by Sir Bertram Clough Williams-Ellis. In 2006 the house was extended with an additional 2 storey wing, identical to the original design. The 1980s pool is out-dated, so the client wants to replace it with a modern design and improved thermal envelope. They also want to create a private and cosy environment, so windows are limited to the rear elevation, with views over the Clee and Welsh hills. Large sliding doors to the courtyard and walled garden fully retract into the walls, so the pool can be opened to the outside on hot days and when lots of friends visit. The pool walls are clad in weathered Corten-steel, to pick up the textures and hues of the adjacent sandstone house and garden wall. A zinc seamed roof references the lead flashing to the sloping bay-window roofs on the house. Inside there is an hour-glass shaped pool, jacuzzi, sauna and steam room. Above the pool is a stretched ceiling, housing fibre-optic cables that can change colour to set different moods.