As at 29 October 2007, Hy Brasil is of State significance as one of three "organic" houses designed by Alexander Stewart Jolly in
Avalon. Hy Brasil with its simple construction of stone and timber and set in its native bushland setting represents Jolly's architecture and philosophy regarding the built form and its relationship to the natural Australian landscape. Hy Brasil was listed on the
New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria.
The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Hy Brasil is of State significance as an excellent example of twentieth century "organic" architecture and is one of three listed works by Alexander Stewart Jolly. The unique bushland setting of the building, large tile and stone terracing form an integral part of the design philosophy. This distinctive style influenced the later "
Sydney School" architectural movement of the mid sixties.
The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. The ridge-top siting of Hy Brasil is prominent from the surrounding area and takes advantage of superb panoramic views of the Tasman Sea and Pittwater. Native bushland has been retained and enhanced by the well chosen exotic ornamental planting to provide a setting which complements the natural qualities of the house. == See also ==