A main contract award is due later this year on the £75m Plot NW06 contract.
The deal will see construction of 370 residential units alongside 693 square metres of retail and leisure space.
Planning permission for the latest phase – known as Alto – was granted in February.
Maxwell James, Chief Executive of Quintain, said: “Alto, will enable us to increase the number of homes under construction this year to 845, ensuring a pipeline of completions to the end of 2017 at a price point where a significant imbalance persists between sup ly and demand and buyers may also benefit from the Government’s Help to Buy scheme.”