Kingmaker House New Barnet, London

Barrett Mahony provided civil and structural engineering consultancy  services for a refurbishment and extension of an existing office building  to form 137 residential units. The existing building comprised a seven- storey reinforced concrete office building. 

Barrett Mahony designed a new three-storey steel-framed vertical  extension, supported on the existing structure. The existing office  structure was assessed and its load-bearing capacity enhanced to  enable it to support the additional vertical loading. New reinforced concrete shear walls and steel bracing elements were introduced to support the increased lateral loads. Steel framed elements were  introduced to the perimeter of the existing structure to support  cladding and balcony loads.

The scheme also included the construction of a new seven-storey  reinforced concrete framed extension to the rear of the existing  structure. Sustainability calculations indicated that repurposing the  existing office block achieved a significant reduction in Embodied  Carbon, compared with constructing a new-build.