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Our client was the Turkish Consulate in London, which owns a four-storey building in the Knightsbridge Conservation Area. The top storey of the existing Grade II-listed building is a much later addition (built around 1970), and is partially steel-framed with brick and timber/slate perimeter walls. The goal was to maximise the use of space, but given the need for listed building consent and the constraints of working in a conservation area, it wouldn’t be easy.
We recognised that Westminster Council often prefers vertical extensions, particularly in conservation areas. Therefore, our strategy involved designing a double-storey mansard extension to replace the non-original top storey. We focused on sustainable materials and enhancing natural light, while also respecting the neighbours' rights to light and privacy. Throughout the process we stayed in close communication with the council, ensuring compliance with all regulations.
The council ultimately approved our design, which allowed for a comprehensive renovation with high-specification fittings and carefully considered interior design. This solution not only provided the Turkish Consulate with the extra space and light they desired, but also enhanced the character and functionality of the listed building, meeting both client and council requirements.
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