1 Bligh Street Building Tower By Ingenhoven Architects

1 Bligh Street Building Tower

The office tower designed by Christoph Ingenhoven (Ingenhoven architects) and Ray Brown (Architectus) is the winner of this year’s International Highrise Award.

The modern-style office building is located in the Sydney central business district overlooking Circular Quay, the Sydney Harbour, and the Sydney Harbour Bridge.

1 Bligh redefines the future of the workplace. It offers a rare opportunity to enjoy premium-grade accommodation in a superb location with the world’s best practice sustainability and a design that enhances collaboration.

An Inspirational Building:

At the heart of the financial district, 1 Bligh is the fi first of its kind. A striking new presence in the Sydney skyline, the unique elliptical tower breaks the mold for sustainable high-rise office space, combining leading edge design and technology to create the next generation workplace in one of the world’s most enviable business locations.

Connected by sweeping stairs to the dynamic open space of Farrer Place and the surrounding business community, it makes an impressive statement. Inside, the visionary design is nothing short of inspirational. It optimizes natural light and space to improve the way people collaborate and interact. A host of innovations, from the double-skin façade to the full height glass atrium, make this Sydney CBD’s first 6 Star Green Star high rise office tower. This brilliant vision is now a reality. It’s time to take your business to 1 Bligh – and into the future.

Designed for progressive organizations focused on attracting the very best talent, 1 Bligh lets you create a magnificent workplace, attuned to the way people want to work in the 21st century. Placing the highest value on workspace quality, productivity, and enjoyment, it’s an environment where everyone can enjoy abundant natural light and space with superb connections between floors so they can collaborate like never before. If you aspire not only to succeed but to lead, 1 Bligh is the natural choice for your business.


1 Bligh is a vehicle for success. The groundbreaking design, unique collaborative spaces, sweeping sky terrace, and green wall redefine what a workplace can be.

With a great deal of flexibility to configure your workplace in a way that suits your business, you will increase workfl ow and productivity. Efficient 1,637sqm floor plates in the high rise enable the most connected, collaborative, and interactive way of working your organization has ever experienced, letting you improve business relationships and boost results. The contemporary atrium ‘pod’ design on each level provides access to breakout space, guest areas, and meeting points within the naturally ventilated central atrium, where people can brainstorm in teams or work independently.

Design and Technology:

1 Bligh is a breakthrough in high-rise design and technology, raising the bar with a host of premium-grade features that make it not only extraordinary to look at, but extremely efficient. 1 Bligh is one of the first commercial projects in the country to implement 3D Building Information Modelling (BIM) technology in the design and construction and is a quantum leap forward for the property industry.

  • Energy efficient double skin façade: Stay comfortable as you work while enjoying plentiful natural light and harbor views. An intelligent double-skin glass façade with sensor-controlled automated blinds protects the building from the sun’s heat and reduces air conditioning costs while keeping you connected to the world outside.
  • Stunning central atrium: Arriving at 1 Bligh is a spectacular experience with a naturally ventilated glass atrium, the tallest in Australia, soaring the full height of the building. Dynamic views through the atrium expose the color and movement of collaborative workspaces and offices connected by glass lifts, revealing a highly productive and engaged workplace community.
  • Maximum natural light and views: By turning the footprint on its axis, the design achieves the largest possible north-facing floor plate, maximizing iconic harbor views so every floor is refreshingly light, spacious, and open.

Smart Sustainability:

Awarded a 6 Star Green Star – Office Design v2 Certified rating with a maximum of 5 points for innovation and designed to achieve a 5-star NABERS Energy rating, 1 Bligh is a healthy workplace that supports employees to perform at their peak. Energy and water efficient technologies are also expected to reduce carbon emissions by 42 percent compared to similar premium grade office buildings, helping to reduce business overheads. New to Australian high rise offices, these innovations set a new sustainability benchmark in this category – all without compromising the performance of the premium grade services.

  • Fresh air: The naturally ventilated atrium provides free fl owing fresh air throughout the building. A state of-the-art air conditioning system surpasses fresh air circulation benchmarks by 150 percent, providing variable air volume and chilled beam technology to maximise comfort while reducing energy consumption.
  • Energy smart: Automated sensor blinds provide highly efficient heat protection, enabling a design oriented to light and views with approximately 70 percent of net lettable area within eight metres of the façade or the full height atrium.
  • Water wise: Recycled water will meet 90 percent of the building’s water requirements, irrigating the green wall, rooftop banksias and other plantings. Waste water is treated onsite for use in washroom fl ushing systems and cooling towers, saving 100,000 litres per day, which equates to an Olympic size pool every two weeks.
  • Green power: An innovative tri-generation system combines gas and rooftop solar thermal collectors to generate cooling, heating and electricity.

Architectural features:

  • A glazed winter garden space at ground floor level with a 135m high naturally ventilated internal atrium approx 16m in diameter with internal pods at each level
  • Double skin column-free façade system with floor to ceiling glass to promote maximum daylight and views with 1,600mm mullions and inner columns set back approximately 5 meters from the façade provide a highly efficient and flexible workplace planning module
  • Horizontal and vertical connectivity between floors with high levels of natural light and views throughout Twin offset cores
  • Designed to achieve a 5-star NABERS Energy rating and achieved a 6 Star Green Star – Offi ce Design v2 Certifi ed rating with energy and water efficient features including rainwater and black water recycling, onsite power tri-generation, solar technology, double skin façade and naturally ventilated spaces.
  • greater visibility and public interaction.” – Architect Christoph Ingenhoven said
  • “Mr. Angus’s sculpture is highly visible, exciting, and enjoyable – it draws people to the building as a Sydney landmark and enlivens the whole precinct.” – Architect Ray Brown, Architectus

International Highrise Award:

The office tower “1 Bligh Street,” in Sydney to win the 50,000 euro competition for the most innovative high-rise. The architect Christoph Ingenhoven (Ingenhoven architects) and Ray Brown (Architectus) and the General Manager of the Development client based DEXUS, Tony Gulliver, accepted the award statuette and cash award as part of the ceremony at the St. Paul Church. The award was presented to the Mayor of the City of Frankfurt is Main, Peter Feldmann, and Dr. Matthias Danne, real estate and finance Board of DekaBank. The German Bank Towers in Frankfurt were honored with special recognition for the revitalization of an existing tower.

With 139 meters and 30 floors, the building breaks no winner height records but sets new standards on its continent in terms of social, cultural, urban planning, and sustainability criteria. “The overall quality of the building is outstanding. With their design, the architects avoided the iconic, rather represent the needs of users – such as the view of all offices – into focus, “the verdict of the jury chaired by the Frankfurt architect Professor Albert Speer.

The “1 Bligh Street,” has an elliptical shape and is slightly rotated in the street grid so that all offices have a direct view of Sydney Harbour and the Harbour Bridge. As the first high-rise building in Australia, it has a naturally ventilated double facade made of glass. It facilitates optimum daylight, reducing the heat loads and losses, stressing the homogeneous crystalline overall shape of the building.

The main tenant of the building, the law firm Clayton Utz, which has leased 15 floors. Developers of the 2011 completed high-rise are based DEXUS Property Group, one of Australia’s leading real estate companies.

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