Twin homes are a strange dwelling. It is a 2-unit building with each owner owning one side of the building and the lot beneath that side. It is kind of like a duplex that is split up to 2 different owners. The units are joined by a common wall which runs down the middle of the building. Sometimes this type of home can be beneficial as it is similar to an association townhouse without the association. But being married to a neighbor that doesn't have the same concern for the property can be a source of conflict.