Husband Matthew Vaughn first cemented his relationship with his new bride by buying her the pet. At the time, Schiffer said: "I love tortoises - there's just something about them."
The new houses will be Schiffer's seventh and eighth properties worldwide. She also has homes in New York, Bayswater in London, Germany, Monte Carlo and the £5 million Coldham Hall in Suffolk, where she married in May.
The new houses will be on one of the highest points of the mountain peninsular Schiffer has bought - marked out here in yellow - and will give amazing panoramic views of the bay.
Schiffer's publicist, Kris Thikier could not be contacted for comment.