Sutton Estate wins Retrofit of the Year at the Building Awards 2026

11 April 2026

HTA Design’s retrofit of the Sutton Estate has transformedfour 1913 housing blocks into 81 accessible, energy-efficient homes, whilepreserving the estate’s historic character.

Instead of demolishing and rebuilding, the projectreconfigured outdated studios, retained load-bearing walls and repairedoriginal brickwork using salvaged materials. Internal wood fibre insulationreduces heat loss by 57%, while 27 ground-source heat pump boreholes providefossil-fuel-free heating and help cut carbon emissions by 70%.

The judges called it “a model example” of estateregeneration and “an exemplar for other UK schemes.”

The Queen Elizabeth II Garden in Regent’s Park was Highly Commended in the Environmental Impact Award

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