Looking at google maps last night, Frogmore Cottage is not much of a cottage, and much more a very large, sprawling house. If the 5 apartments have already been vacated, then I suppose it's possible that work has already begun, and a move in date for next year might be possible. But if the residents were given some time to gather their effects and move out (and right before Christmas, too, how's that for bad optics?) and work doesn't start until early next year, I'm not seeing an early move in date for the Sussexes. It is a big house, and to reconvert it to a single family dwelling from 5 apartments with five kitchens, entrances, etc. must be a massive job. And that's not even taking into account redecorating, that's just considering structural changes. This should be interesting.