Located in the Hatton Garden Conservation Area, 23–27 Hatton Wall was originally a bar and restaurant across the lower ground, ground, and first floors, with two residential flats above and access to a roof terrace. The project involved a complete internal reconfiguration and refurbishment to create a self-contained commercial unit at lower ground and ground floor, with five new apartments above. Significant structural works were required to enhance the existing building fabric and deliver additional floor space.
Cambell Brown Engineers were appointed to design the permanent structure, retaining the four perimeter walls while removing the existing internal framework. CBE specified investigations into the existing structure and developed the permanent structural design.
Works included underpinning the historic structure, constructing new foundations, and adding a lightweight timber roof extension. The property was extended to the rear with a new brick façade and an additional zinc-clad storey at roof level. This extension sits discreetly within the roofline of neighbouring buildings, preserving the character and appearance of the conservation area. Natural light was a key design consideration. A new double-height space was introduced between the ground floor and basement, featuring a steel staircase visible from the street within the lightwell.
Cambell Brown Engineers also designed an internal feature staircase, adding architectural interest to the interior. At the rear, a large rooflight was installed to maximise daylight penetration into the deep lower ground floor plate. Externally, the original Hatton Wall façade was carefully restored, including new timber sash windows and extensive parapet repairs. To the rear, full-height glazing and outdoor terraces provide expansive views across London’s rooftops and glimpses into the hidden network of alleyways.
