This steel-framed extension to a bungalow overlooking the sea comprises a cantilevered roof and balcony and completely glazed west façade. In order to eliminate any down-standing beams in the ground floor ceiling or visible supporting columns, the design re-uses the original trusses, combined to form girders to support the new first floor structure.
The portal frame is enclosed on the ground floor by timber cladding and clad in zinc where it emerges through the balcony. The first floor spans 6.6-metres across a new opening in the original external wall. Most internal walls were demolished and the floor re-built to create an open plan living/ kitchen/ dining area of 90m2.  Solar collectors contribute to both hot water and underfloor heating and roof and balcony overhangs prevent summer overheating.
Locally sourced Western Red Cedar, galvanized steel, pre-weathered zinc and anodised aluminium, were chosen for durability and minimal maintenance in the coastal environment.