Tree house tackles an emerging crisis many bushy suburban sites face: building in fire zones. 'The four bedroom family house in Bayview on Sydney's Northern Beaches is a fine case study in how to resolve the sometimes inhibiting constraints of building in these challenging site conditions. Bushfire shutters are carefully detailed to be hidden, maintaining views and connections to the landscape that that are what have drawn people to occupy the bush. The resilient and tough weathering steel cladding of the outside is wonderfully counterbalanced by the soft light timbers of the inside.