A full refurbishment and modernisation of a seven-storey, 1000sqm mansion on Cadogan Square within the Cadogan Estate. The scheme rationalises a previously disjointed layout, introducing a central cantilevered Moleanos stone stair to unify the home. A new basement provides leisure facilities including a pool, gym, sauna, and steam room, while a contemporary roof terrace adds outdoor space. Interiors combine marble, stone, and refined detailing, with a double-height living space and mezzanine library enhancing volume and light. The result is a cohesive, high-end residence that blends historic character with contemporary luxury.