Looks like Kate Middleton and Prince William are heading to London. After temporarily staying at Amner Hall in Norfolk for the past few years, the Duke and Duchess of Cambridge and children Prince George and Princess Charlotte are moving back to Kensington Palace—and it’s going to be bigger and better than ever. The 400-year-old residence, which serves as the foursome’s official home, is set to undergo an expansion before the family moves back in time for George to start school this fall. The Telegraph reports that the Historic Royal Palaces have applied to build a two-story basement beneath the Orangery to accommodate royal staff members and ceremonial garb. After the renovations, it appears that Will and Kate will be spending more time in London (meaning more royal sightings for the rest of us). And although these types of basements were recently banned by the local council, we’re thinking they’ll make an exception—after all, we are talking about the royals here.