It is believed he will ultimately live at Marsh Farm on the estate.
Mountbatten-Windsor is expected to return to Windsor over the next few weeks to collect the remainder of his belongings but his permanent base is now officially in Norfolk.
He was last seen in Windsor on Monday, riding on horseback close to his previous home. He was also photographed driving away from Windsor Castle waving at passers by.
A statement about Royal Lodge in October said “formal notice has now been served to surrender the lease.”
It followed weeks of controversy over the amount of rent being paid to the Crown Estate who leased the property.
The Sandringham Estate is privately owned by the King and he will pay the costs of his brother’s new home.
