Rachel and Adam's family has outgrown their home, with three of their four children sharing one bedroom. Adam sees plenty of potential in the house to add more space, but work-at-home mom Rachel is ready to move to a larger house with a mudroom, playroom and guest room. Hilary Farr hunts for a way to enhance the function and hidden space in the house, while David Visentin searches for the home of their dreams with room to spare.