Exclusive: Four contractors are understood to be battling to win the £600m phase two of the Battersea Power Station development.
It is understood the contract, expected to be worth around £600m, will be awarded in early July.
Mace was previously appointed as construction manager for the £100m preliminary works, which began in October 2013. It is understood that if Mace does not secure the contract it will stop on site, with work taken over by the winning bidder.
The team working alongside Mace includes structural engineers Buro Happold, conservation and architectural adviser Purcell, project manager Turner & Townsend and cost consultants Gardiner & Theobald.
Phase two of the development includes the creation of high-end retail space adjacent to the power station’s two turbine halls, as well as commercial office space and residential apartments. Construction is expected to begin around March 2015.
Each of the turbine halls is the size of that in the Tate Modern art gallery, with retail space set to the side. The halls will be used as event spaces, with commercial offices situated above them.
A total of 254 residential properties will be created on the upper levels, ranging from studios to five-bedroom apartments.
They will be located at the top of the existing facades on the western and eastern flanks of the Grade II-listed building, as well as on top of the central boiler house.
The second phase also includes the construction of a six-acre public park between the power station and the River Thames that will allow free access along the riverfront for the first time in many years.
Construction on phase one of the development, called Circus West, started in December 2013. Carillion is building the 866-unit scheme, which is due to finish in autumn 2016.
The development will also incorporate a new tube station at the end of a planned extension to the Northern line.
Construction News revealed last month that the race for the £600m Underground extension is down to two bidders: Balfour Beatty/Bam and Ferrovial/Laing O’Rourke.
Plans for the third phase were revealed in April. The designs by architects Gehry Partners and Foster & Partners feature a new high street for London, to be known as The Electric Boulevard.
Battersea Power Station Development Company declined to comment on the bidders.
The shareholders of Battersea Power Station – SP Setia, Sime Darby and Employees’ Provident Fund – have promised up to £1bn of equity finance to fund the 3.5m sq ft development, which comprises 1.6m sq ft of offices and 1.15m sq ft of retail space at Battersea Power Station.
Former Land Securities’ development director Victoria Fairhall was appointed as its head of commercial development in January.