Developer Helical Bar has appointed the firm to refurbish the 1960s Maple House on 37-45 City Road to create 70,000 sq ft of CAT A accommodation close to Old Street’s Silicon Roundabout.

The work includes extending the north elevation and adding a 4th storey to create a more prominent frontage on City Road when complete in Summer 2015.

Existing Maple House building near Silicon Roundabout

Revamped office block

The project follows similar work in London by Willmott Dixon which included the re-construction of an office behind an existing façade in Giltspur Street, Farringdon, for City & Guilds.

Chris Tredget, managing director for Willmott Dixon in north London, said: “This latest contract is a further sign that London is attracting new companies to set up their headquarters, especially in sectors like technology, as it has the talent pool, connectivity and working premises they need.”

Willmott Dixon current workload in London include commercial projects worth £149m a further £27m of interior fit-out work, plus well over £100m of residential projects.