Skip to Content
Bilgola Beach House

Bilgola Beach House

Sydney, Australia

Nestled in the sand dunes of Bilgola Beach, on the northern coast of Sydney, Australia, this flexible family home balances protection from the elements with deep immersion in the surrounding landscape.

Tough As Nails

Informed by the beachfront environment of its headland site, the home is designed to withstand Australia’s dramatic climate conditions, where harsh sunlight, high winds, and flooding are common. The structure is set on concrete piles, allowing sand and water to move in and out beneath the building. A custom system of horizontal bi‑fold screens can enclose the home to protect it from the elements or open it fully to capture stunning views, while providing passive ventilation.

Balancing Public & Private

Envisioned as a central gathering place for a large family dispersed around the world, Bilgola Beach House is organized into transparent and opaque zones. An open central gathering and entertaining space on the lower level features retractable window walls that allow the activity of the home to flow between the interior and exterior. More private spaces stretch to the north and south of the site, framed in board-formed concrete that blends with the sand. An upper-level suite creates an intimate refuge for the couple that lives year-round in the home, while a bar of guest bedrooms on the lower level provides space to host their children, grandchildren, and other friends and family.

Bilgola Beach House

Access to Natural Light & Shade

The home’s horizontal bi‑fold screens moderate harsh summer sunlight, providing different levels of shade to respond to on‑site conditions. These screens and their signature hinge elements were custom‑designed and fabricated to ensure durability and functionality in a wide range of weather conditions. An interior courtyard supports this approach, bringing softer, filtered daylight into the core of the home.

Bilgola Beach House 20

Immersed in the Landscape

The design of Bilgola Beach House balances the need for protection with the desire to directly engage with the surrounding natural landscape. The retractable window walls throughout the home’s lower-level gathering zones blur boundaries between interior and exterior environments; upstairs, glass guardrails preserve full-height views across the dunes. The courtyard’s central water feature also helps to cool the air, reducing the need for air conditioning and allowing residents to directly engage with the climate of the site as well as the ocean beyond. Board-formed concrete exterior walls, visible throughout the interior public spaces, reference the color of the local sands and will merge with the natural condition of the headlands as they weather over time.

My hope is that the home will grow and evolve as it responds to all the different environmental and climatic conditions of the site, hopefully blending into the headlands and becoming more integrated with Bilgola Beach over time. Tom Kundig, FAIA, RIBA
Design Principal

Wave House

Mercer Island, Washington

River House

Ketchum, Idaho