76 Southbank

Lambeth, Greater London

Special Award for Sustainability

Exemplary project which demonstrates excellent sustainability credentials in terms of overall design parameters, material selection, construction methods and long-term energy consumption. Sponsored by Derwent London

76 Southbank is an outstanding example of how carefully considered architectural design can deliver exemplary sustainability outcomes through reuse, adaptation and long-term thinking. Located prominently on the South Bank and listed at Grade II, the refurbishment of this 1980s building demonstrates a clear commitment to reducing environmental impact while enhancing architectural quality and future resilience. Sustainability is embedded as a guiding principle throughout the project, shaping decisions from strategic planning to detailed execution.

At the heart of the scheme is the retention and intelligent reuse of the existing building structure. By conserving the concrete frame, floor plates and core elements, the project achieves a substantial reduction in embodied carbon when compared to demolition and redevelopment. This design-led choice recognises the environmental value of the existing fabric and positions reuse as the most effective sustainability measure available. Structural interventions were limited and highly targeted, ensuring the building could continue to perform safely and efficiently over an extended lifespan. The approach to the building envelope is particularly notable. Rather than replacing the façade wholesale, the design team developed a strategy of enhancement and upgrade that respects both the listed status and the original architectural character. Improved insulation, upgraded glazing and refined detailing significantly enhance thermal performance, reduce heat loss and control solar gain. These measures improve comfort for occupants while lowering operational energy demand, demonstrating how heritage buildings can meet modern performance expectations through sensitive intervention.

Building services and environmental systems are carefully integrated to support the upgraded fabric. High-efficiency plant and intelligent controls are employed to minimise energy consumption and reduce carbon emissions in use. Passive design measures are prioritised wherever possible, limiting reliance on mechanical systems and supporting a stable, comfortable internal environment. This balanced approach ensures that operational sustainability is addressed alongside embodied carbon considerations. Material selection and construction methodology further reinforce the project’s sustainability credentials. New materials are introduced only where they deliver clear performance, durability or longevity benefits. Responsibly sourced, robust materials reduce future maintenance requirements and limit the need for replacement, supporting whole-life sustainability. During construction, waste reduction strategies were implemented, with materials reused or recycled wherever feasible, ensuring the refurbishment process aligned with the project’s environmental objectives. Internally, the building has been designed for adaptability and long-term flexibility. Generous, efficient floor plates support a range of future uses and working patterns, reducing the risk of obsolescence and the environmental cost of further major interventions. This emphasis on adaptability recognises that sustainable buildings must be capable of evolving over time.

76 Southbank as a confident and mature model of sustainable refurbishment. It demonstrates that the most effective sustainability outcomes are achieved through intelligent design choices, restraint and respect for existing assets. It sets a powerful benchmark for low-carbon refurbishment and illustrates how existing buildings can play a vital role in addressing the climate challenge while enriching the urban environment.