The Goodwood plant is the headquarters, design, manufacturing and assembly centre for Rolls-Royce Motor Cars.
BMW came to an agreement with the Earl of March to buy a greenfield site on his Goodwood Estate, near Chichester, West Sussex.
The original plant, located close to Goodwood Circuit and Westhampnett village, cost £65 million.
The 30,000 square metres (320,000 sq ft) facility is located in Bognor Regis, eight miles from the Goodwood plant.
The TLC will be extended in late-2017 by almost 10,000 square metres (110,000 sq ft) to meet growing demand and in readiness for future models, such as the Cullinan.