International House Sydney, situated at the gateway to Barangaroo South represents a completely new approach to commercial building design and construction for Australia. It is the country’s first, and at seven storeys in height, the world’s largest commercial office building to be constructed using mass engineered timber as its primary structural material. Engineered timber brings with it exceptional sustainability outcomes including embodied energy reductions, mitigation of greenhouse gas emissions as well as scope for prefabrication and opportunities for up-skilling and training of the workforce. Lendlease, working with architects Tzannes Associates have capitalized on the potential of this advanced material to design and construct a building that reveals and celebrates its innovative structure, while also employing a range of strategies to enhance building performance and comfort for end user. International House Sydney amply demonstrates that the economics of commercial development can be achieved while realising design excellence and setting new sustainability and innovation benchmarks for the construction industry.