The 100,000 sq ft Albion Square development will house 1,000 Sellafield office workers who will move from the main Sellafield site.
The project is part of Britain’s Energy Coast programme and aims to boost the economy of Whitehaven by attracting new workers to the town centre.
Morgan Sindall will build two, four-storey office buildings at two adjacent sites in the town, designed by Hurd Rolland Partnership.
The project appointment follows Morgan Sindall’s recent confirmation as preferred delivery partner, in joint venture with Arup, to provide a range of essential infrastructure asset services to the Sellafield site in Cumbria.
The contract, worth a potential £1.1bn, is expected to be signed shortly and will run for an initial five-year period but could be extended for a further 10 years.
Chris Brown, area director for Morgan Sindall, said: “We are aiming to work with around 20 subcontractors from Whitehaven and the surrounding area during the lifetime of the project and will be looking to hold a meet the buyer event.
“We are also hoping to recruit a number of apprentices, so this is a great opportunity for those in the town wanting to break into the construction industry.”