Work will involve revamping the building at One Puddle Dock near Blackfriars Station.
The winning contractor will refurbish the six-storeys of offices to create a new home for 580 Network Rail staff and retail facilities on the ground floor.
Network Rail said: “The works will either be tendered on a single or 2-stage procurement route which will lead to a Design and Build Contract.
“Network Rail will seek assurance around the Stage 1 costs and outturn cost and may implement a guaranteed maximum price. The works must be completed on site by March 2016.”
The estimated contract value is £16m-£25m.
Firms have until February 4 to express an interest in the deal and for more information contact [email protected]
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