Now that Eugenie has moved into Ivy Cottage, during the next reign, I can now see Charles moving into BP, Windsor Castle, Sandringham and Balmoral (same as HM currently), and the Cambridges retaining Anmer Hall, and also taking on Clarence House, Birkhall and Highgrove. This would mean the Sussexes could retain Frogmore Cottage and move into the Cambridges' current KP apartment. Beatrice could then move into Nottingham Cottage. The residences of the Sussexes plus the York princesses would be settled once and for all then, with only William and Kate moving during their reign.