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2018 National Architecture Awards: National Award for Commercial Architecture

International House Sydney by Tzannes Commercial Architecture: National Award Australian Institute of Architects

Jury citation

International House Sydney in Barangaroo was at the time of its completion the tallest timber structure for a commercial building in the world. This achievement alone signifies the degree of innovation needed to realize such a complex project in the inherently conservative construction industry.

The use of several timber structural systems, and there are four types at play, is a hallmark of the prowess of the project. Building tectonics are celebrated and confidently expressed. The overt expression of the blackened services and their integration with the structure yield an honest and expressive interior that feels intimate and humane – a counterpoint to the mega-floors of most new commercial floor plates. This careful attention to detail continues through the facade, where the use of transparent glazing allows the rich internal timber structure to be clearly visible to the street as a celebration of the building’s structure as its primary identity. Such an overt expression of the tectonics of the building presents as a learning tool for this new technology using an old material.

Located between the large Barangaroo towers and the main public street that binds Barangaroo to the city, the building tempers their excessive scale and wind effects. The parti of concrete base and a cantilevered offset lighter timber portion above creates a generous public realm at the ground plane with a timber-lined verandah of ironbark strutted columns – providing a rare human scale within the Barangaroo precinct.

For more coverage, read the project review by Andrew Nimmo.

Credits

Architect
Tzannes
Chippendale, Sydney, NSW, Australia
Project Team
Jonathan Evans, Alec Tzannes (design directors), Dijana Tasevska (project architect), Tony Lam (BIM and documentation lead), Chi Melhem, Amanda Roberts, Lily Tandeani, Dustin Cashmore, Wenxi Ren, Carl Holder, Luke Novotny,, Lyndsey Fitz-Gerald, Linda Kennedy
Consultants
Acoustic consultant Wilkinson Murray
Acoustic engineer Lend Lease
Developer and builder Lend Lease
ESD consultant Lend Lease, Lendlease Applied Insight
Electrical and mechanical consultant AECOM
Facade engineer Surface Design
Fire engineer Defire
Hydraulic and fire services consultant Warren Smith & Partners
Interior fitout Hassell.
Lighting consultant AECOM
Structural engineer (concrete) Arcadis
Structural engineer (timber) Lendlease Design Make
Site details
Location Sydney,  NSW,  Australia
Category Commercial / public buildings
Project Details
Status Built
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