Two-up two-down is a common term used to describe a two-story house with two rooms on each floor. It is a popular type of housing in the UK, especially for working-class families. However, there are a few synonyms for this phrase. For instance, it is sometimes referred to as "a double-double" or a "four-room house." Other terms used to describe this type of housing include "semi-detached house" and "two-bedroom terraced house" or cozy cottages. While the name may vary, the type of house remains the same, providing an affordable and practical living space for many individuals and families.