Mixed occupancy is an unofficial occupancy category that describes a situation in which a variety of:

• A. occupants live or work in the same structure
• B. occupancies may be included in the same structure
• C. occupancy types are located in the same jurisdiction
• D. construction methods were used in the same jurisdiction

Answer: (B)

The main idea here is that a single building can contain more than one occupancy type. Mixed occupancy describes a structure that includes different occupancy classifications within the same footprint, rather than just one use.

This matters because different occupancies carry different hazards, occupancy loads, fire protection needs, and egress requirements. When a building mixes uses—such as a storefront with offices or a residential area above a shop—the layout, fire separation, suppression, and life-safety planning must account for all of those varied occupancies in one structure.

So, the best choice is that occupancies may be included in the same structure. It isn’t about people living or working in the same building per se, nor about where occupancy types are located geographically or about construction methods in a jurisdiction. An example would be a building that has a retail store on the ground floor and offices or apartments on upper floors.