Orange Balloon is looking at some houses, saying that he likes old houses best, whereas Mouse would prefer something small and cozy like a nest. We learn that when it comes to houses, there are two things people can do: either build their own house or purchase one and that today's tendency is for people to live close together in groups of clustered houses, as opposed to the past when they were much more spread out. We learn that fifty years ago, many people still built their own houses, but in current times it has become a much more fast and streamlined process, with somewhat less attention to detail and more focus on fast building that take place in as little as a few months. Even then, there is still a set plan, with a house beginning as a model, perhaps even of an entire neighborhood. A foundation is laid, a process that was skipped in the old days, leading to slipping and cracking. After the foundation is built, the floor is laid, the walls go up, the plumbing and electricial wires