Smart Design Studio designed a contemporary renovation and extension for an early 20th-century terrace house in Sydney, Australia. The house has a spacious living areas and private zones open out from each side of the stair with one area per level alternating between the old and new building. Formal living, dining, kitchen and informal living; master suite, guest suite, study and laundry: each zone maintains a natural sense of privacy from the other through the offset in level yet maintains a sense of interconnection in the openness and movement created by the stair. This exciting renovation and extension of a turn-of-the-century terrace house in Sydney’s Potts Point focuses on a grand and gracefully spiraling stair that forms the pivotal junction of the old and new parts of the house. The connection to the outdoors is accentuated through a 13 meter clear span wall of sliding doors that overlooks a pocket garden.This house offers extraordinary spaces complemented by confident forms, understated design and exquisite detail.