Seymour Harris Architecture were appointed by Nurton Developments in late 2004 to produce design proposals for the complete refurbishment and redevelopment of Cannon House in Central Birmingham. The building located within the Colmore Row Conservation area, was constructed in the 1960s and possessed one of the largest single floor plates of office space available within the city core.
The design proposals for the redevelopment of Cannon House paid particular attention to respecting and retaining the more successful architectural elements of the existing building. Accordingly the existing stone clad frame projections; the existing stone corners and the existing stone cornices were sympathetically refurbished and retained. At the same time the Design Team deliberately intended to dramatically modernise the visual appearance of the building, which had previously looked tired and unused and significantly upgrade the thermal performance of the building. The materials incorporated into the refurbishment works include a palette of full height structural glazing; floor to floor curtain walling, and colour coated metal cladding profiles. The redevelopment project was completed by Ashford Construction in January 2006. In early 2007 the offices were occupied by the tenants. Insolvency Service and Arriva Trains.