The Roman domus was much more than a place of dwelling for a Roman familia. It also served as a place of business and a religious center for worship. The size of a domus could range from a very small house to a luxurious mansion. In some cases, one domus took up an entire city-block, while more commonly, there were up to 8 domus per insula (city-block). All domus were free-standing structures. Some were constructed like modern-day townhouses with common walls between them, while others were detached.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/77/the-roman-domus/.