Built exceeds green expectations at Sydney development
Construction company Built has outstripped the Green Star target for the $110 million refurbishment of 20 Martin Place in Sydney.
The 20 Martin Place project involved the complete reconstruction of an out-dated, 20-storey, 1970s office building, with the aim of transforming it into a ‘signature building’ in the heart of Sydney’s CBD.
Built was contracted to deliver a five-star rating on the development but instead achieved a six-star rating at no extra cost to client, Pembroke Real Estate. While the five-star Green Star office design pathway contemplated at the early stage of design targeted 65 points, the project team identified two additional Green Star points and 10 innovation points that could be implemented, according to Built.
The result is world leadership as a green building for the project, with a total score of 77 points awarded by the Green Building Council of Australia (GBCA) during the round one submission.
Eight out of the 10 innovation points came from innovation challenges, including 64 percent zero volatile organic compounds (VOC) paints, contractor sustainability education and materials life-cycle assessment. The building is projected to emit 107,000 tonnes of CO2e emissions in operational energy use over the building’s expected 60-year life.
The 20 Martin Place development is also one of Sydney’s first commercial office buildings to be delivered with LED light fittings installed to all office floors, according to Built. This has resulted in an 11 percent improvement on the most stringent Green Star benchmark.
In addition, the building features a 100 percent outside air system served via chilled beams at perimeter and VAV in its centre zone. Ultrasonic sensors in all fire stairs improve safety for all tenants and 95 percent of the waste generated in demolition and construction was diverted from landfill.
Built managing director Brett Mason believes the 20 Martin Place development highlights the positive impact the company is able to make when it becomes involved on projects from the very early stages.
“Early contractor involvement is our preferred method for working with clients to help them solve complex problems,” Mason says. “In this case, Pembroke bringing us to the table in the project’s early days created an opportunity for quite detailed research and innovation in construction processes, which in turn elevated the number of Green Star points that were earned on the project.”