Winner of the Observer Ethical Award, this exemplary sustainable retrofit transformed a neglected 1950s semi-detached house into a high-performance, low-energy family home. Located within a suburban setting, the project demonstrates how existing housing stock can be upgraded to achieve exceptional environmental performance while enhancing everyday living.

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The comprehensive refurbishment significantly improved thermal efficiency through upgraded roof, floor and cavity wall insulation, high-performance glazing, and the use of natural, sustainable materials throughout. These measures dramatically reduced energy demand, improved comfort, and lowered the home's carbon footprint.

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A carefully designed timber-framed extension provides a light-filled kitchen and dining space that connects seamlessly with the garden. Constructed from low-impact materials, the extension complements the original architecture while delivering outstanding thermal performance and energy efficiency.

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Combining sustainable architecture, passive design principles, and advanced building physics, the project minimises heat loss, reduces uncontrolled air leakage, and lowers overall energy consumption. The result is a beautiful, healthy, and environmentally responsible home that serves as a benchmark for residential retrofit and sustainable home design in the UK.