Which term describes a structure that contains two or more distinct uses under one roof?

Which term describes a structure that contains two or more distinct uses under one roof?

• A. Mixed occupancy
• B. Mixed-use occupancy
• C. Assembly
• D. Mercantile

Answer: (B)

A structure that contains two or more distinct uses under one roof is described as a mixed-use occupancy. This classification matters because different areas of the building may have different life-safety needs, occupant loads, egress requirements, and fire protection needs, so the plan must address multiple uses within the same structure. For example, a building with retail space on the ground floor and offices or residential units above fits mixed-use occupancy, since it combines distinct functions under one roof.

The other terms describe single-use scenarios: assembly refers to spaces where people gather for activities like theaters or arenas; mercantile refers to spaces primarily for selling goods to the public. While “mixed occupancy” is a related idea, the specific term used to denote multiple distinct uses under one roof is mixed-use occupancy.