Conceived as an idyllic gathering place for a large family dispersed around the world, Bilgola Beach House cleverly employs movable screens, windows and a bridge linking two structures. Designed by Seattle’s Olsen Kundig, the beachfront home converts from an ideal space for big gatherings and then returns to an intimate, cosy retreat when guests have departed. Both comfortable and ageless, like the project, our Haven bath is perfectly situated to capture the stunning ocean views. Photography by Rory Gardiner