Contractors are lining-up for the job with ISG and Vinci believed to be among those in the hunt according to construction information specialist Glenigan.
CLS has been granted planning for the scheme which it said will create “hundreds” of construction jobs.
Refurbishment work will focus on the lower ground, ground, first and second floors, and to include a complementary infill extension.
This will provide new, high-specification, Category ‘A’, air-conditioned office accommodation, with a gross internal area totalling 3,423 sq m, behind a new, high-quality Portland stone façade.
The scheme includes the provision of eight new residential apartments within the front portion of the first and second floors of the existing office space, providing a total of 500 sq m of residential accommodation.
The refurbishment is scheduled to start in the second quarter of 2013, with completion 12 months later, at a cost of £9.1m.
Executive Chairman of CLS, Sten Mortstedt, said: “We are very pleased to have secured planning approval in this prime location to substantially enhance the Group’s property into high quality offices and residential apartments, and look forward to starting the refurbishment shortly.
“This project will create hundreds of construction jobs over the next 15 months.”