Regen green
1 Triton Square is a paragon of decarbonising existing stock. Throughout the redevelopment, one question was continually probed: how much can we retain and reuse? This is marginal gains at its best.
📍Location
🏢Building Details
Completed 2021
366,000 sq ft redevelopment + extension of 90s building
3 extra floors added = net lettable area increased by 57%
👷🏾♀️Developer & Contractor
Tim Downes – Development Director @ British Land
Chris Carragher – Project Director @ Lendlease
✍️Architects & Engineers
Nick Jackson – Director @ Arup
Kate Fletcher – Associate Director & MEP Lead @ Arup
John Dakin – Associate @ Arup
Matteo Arturo Lazzarotto – Senior Façade Engineer @ Arup
Elinor Reeves – Structural Engineer @ Arup
Festus Moffat – Director @ John Robertson Architects
🌱Sustainability
BREEAM Outstanding (92%) + EPC B
Extensive material reuse: 36,000 sq ft of limestone, 35,000 T of concrete, 1,900 T of steel = 99.9% construction waste diverted from landfill
Façade represents one of largest examples of circular economy practices in the industry: removal, refurbishment + reinstallation of 25,000 separate parts = equivalent of over 12 tennis courts (66% cost saving)
57,000 T of embodied CO2 savings: equivalent to powering 14,000 homes
43% cost saving compared to typical commercial building + 30% faster to completion
🥦 Wellbeing
Floor to ceiling windows + atrium roof-light fills building with natural light
Over 5,000 sq ft of green roofs with insect hotels, beehives, and bird boxes
5 panoramic terraces with rich wildflower planting
500 secure cycle spaces + independent ground floor gym
🎈Bonus feature
It also significantly improved water efficiency. According to the BREEAM water calculator, a 66.3% reduction in potable water use was achieved – or 7.5 Olympic swimming pools saved annually.
🔗 Check it out
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