Chisholm House

Avalon Beach, Northern Beaches, Sydney

Photography Pablo Veiga

Chisholm House in Avalon, on Sydney’s Northern Beaches, was designed to be simultaneously grounded and elevated. Brick, zinc and Australian hardwoods provide both density and lightness. A butterfly roof opens east and west, accentuating the dual aspect while funnelling cooling breezes through the house.

The property is an unusually large battle-axe block of 2600sqm. The previous house was elevated and while it enjoyed water views, it lacked connections to the garden and useable outdoor spaces. It was essential the new family home grounded its occupants in the site rather than sitting atop it and demolition of the existing house was needed to achieve this goal.

The upper level houses the main living spaces and master bedroom and is elevated and lightweight under its zinc-clad butterfly roof. While the lower level has a subterranean feel with its use of concrete and brick, the upper level was conceived as a covered verandah with Australian hardwood timber featuring on floors, walls, ceilings and joinery and doors opening broadly to the lawn and views beyond.  

The house contains no active cooling systems, relying on mass and effective cross-ventilation to maintain comfort levels. In winter, a relatively constant 20 degrees is maintained, aided by hydronic heating in the floors. An electric heat pump powered by renewable energy enables a small carbon footprint.

The home features a refined mix of Australian timber, brick and concrete and a muted palette of nature-inspired neutrals. Bespoke interiors include custom joinery, shelving, upholstery and furniture, designed by Architectsmith and Editor Interiors.