At the centre of the house, flanked by the refurbished glass walkway, skylight shafts and fine-edged balustrading is AES, an in-situ artwork by Marcus Piper. Produced in collaboration with Axolotl, the builder Stuart Wilson Constructions and Pittwater Joinery, AES occupies the double-height wall of the stair void as both artefact and expression of movement, time, and light.