A multi-unit residential building containing two separate dwelling units within a single structure is a duplex. Typically, these units share a common central wall and may be arranged side-by-side or one above the other. A townhouse, conversely, is a single-family dwelling, usually two or more stories, that shares one or more walls with adjacent houses in a row. Each townhouse has its own entrance and direct access to the outside, unlike apartments which may share a common hallway.
Understanding the distinctions between these housing types is essential for prospective homebuyers, renters, and real estate investors. Homebuyers may prefer a townhouse due to its single-family home feel and potential for greater resale value. Renters may find duplexes more affordable or appealing due to a smaller sense of community. For investors, each property type presents different income streams and management considerations depending on location, market demand and the investor’s goal.