The red headed royal has moved into Kensington Palace, where his brother William and Catherine, the Duke and Duchess of Cambridge, reside.
Harry, 27, used to live in nearby Clarence House, the home of his father Prince Charles.
The brothers know the place well. The two used to live there with their mother Diana when they were younger.
The living arrangement may sound like "Three's Company," but that might not be the case as there's plenty of room at the palace.
Harry, 27, is living in what has been described as a modest one-bedroom apartment, complete with a kitchen and living room, so he won't have to disturb the newlyweds, who are living in a cottage on the grounds of Kensington Palace, while their apartment gets a million-dollar makeover. Harry will move into the cottage once the renovation is finished next year.
ABC News contributed to this report.