The two outfits will jointly develop the Sugar Quay site on the north bank of the River Thames in the centre of London.
CPC secured planning consent for 165 private apartments ranging from studios to three bedrooms. They said that work would start later this year with completion in 2017.
Barratt London has a portfolio of active 29 sites in London with five in the centre. The developments at the Courthouse, Westminster and Altitude at Aldgate are 95% sold with both to be completed by August 2014.
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