An attached house is also commonly referred to as a townhouse, row house, or duplex. A townhouse generally refers to a multi-level structure situated in a residential area. Row houses are typically narrow and attached one after the other in a well-laid-out row. Duplex houses, on the other hand, consist of two separate living units with a shared common wall. Other synonyms include zero-lot-line houses, patio homes, and terraced homes. Regardless of the name, attached houses make for an ideal living option for those who desire a sense of community but also enjoy the privacy of the house. With so many options available, there's an attached house to suit any lifestyle.