It can, when levels and circulation are carefully designed for safe use. A lower floor level defines a zone without walls and works particularly well beside a double-height volume.

Highlights include sunken living beneath a double-height volume, a kitchen that can be opened or closed, a master suite with space for the owners' dog, and a terrace and third floor for relaxation and fitness.

Not always, if storage functions are clearly organised. This project divides a long room into his-and-hers zones with a dressing table, island and bag display, while retaining convenient circulation.