The firm will add three extra floors to the building and revise its internal layout to increase existing office accommodation by around 50%
This win represents the continuation of a successful partnership between ISG and Aviva Investors, which has seen the completion of major office developments at Mansfield House and 33 Kingsway and a current £12m scheme for a special dining destination at Exeter’s neo-classical Guildhall.
ISG will transform the outdated building façade, replacing roadside brickwork and glazed elevation with a striking scalloped curtain walling design.
Internally, the building will be comprehensively stripped back to a shell and core state, with ISG carrying out extensive structural works, replacing cores, creating a new central staircase.
Significant alterations will be made to the main entrance and public realm space, with a new ground floor reception area created.
Stuart Deverill, ISG’s Southern regional managing director, said: “This transformational scheme will revitalise an outdated property asset in the centre of Wimbledon into a stand out office development, with a significant increase in rentable space and a striking new exterior.”