Dome House & The Portman Estate Head Office are shortlisted for the AJ Retrofit & Reuse Awards under the ‘Adaptive Reuse into Office’ and ‘Fit-Out’…
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Dome House & The Portman Estate Head Office are shortlisted for the AJ Retrofit & Reuse Awards under the ‘Adaptive Reuse into Office’ and ‘Fit-Out’ categories
Our retrofit approach for Dome House centres on retaining and celebrating the existing fabric while upgrading environmental performance in ways that are sensitive to heritage. For decades, the project’s unique roof structure was concealed behind a gridded ceiling; the design vision was to reveal this inherent beauty and make it the centrepiece of the refurbishment. By carefully removing the ceiling and stripping back layers of later additions, the historic timbers from below were exposed, breathing new life into the building and telling the story of its rich history. Many of the original 16th-century timbers remain intact, a testament to the craftsmanship of the original roof.
The original staircase beneath the dome was removed and replaced with a timber staircase positioned to the rear, creating a more efficient layout. New joinery elements are constructed in light ash, selected to contrast with the existing dark timber roof structure, respecting the building’s history while distinguishing new from old. The CAT A layout and rationalised circulation enhance flexibility for future occupants, extending the building’s useful life and supporting a long life/loose fit approach.
The Portman Estate’s new head office at One Great Cumberland Place is a low-carbon workplace within a restored 1920s Art Deco building, designed to support agile working, wellbeing and a more collaborative office culture. Working within the retained base build, we used extensive consultation to shape the layout and introduced low-carbon, high-recycled-content materials, generous planting, a flexible café-style heart and carefully placed rooms that preserve views to Hyde Park, while reused elements and measured embodied carbon helped reduce waste and support a carbon-neutral outcome with minimal offsetting.
The winning projects will be announced at the AJ ceremony in September.