Turner will oversee the group’s building operations when he joins next month.
Turner was previously development and property services director at Kier but left in the summer as part of a major management reshuffle at the contractor.
John Tonkiss, Chief Executive Officer for McCarthy & Stone said: “Nigel has exceptional experience in the construction industry.
“He will lead our build cost reduction workstream and our deployment of more cost-effective building solutions, which is critical to the successful delivery of our new strategy.”