Commercial architecture is its own field of design, with unique concerns and practices. To give a simple commercial architecture definition, it is architecture focused solely on buildings and spaces that are used for commercial purposes. These include offices, retail outlets, and other facilities where commercial business is conducted.
An office is a building, portion of a building, or a room, that is used for desk-based business purposes
A retail outlet or store is a retail sales establishment which has a genuine retail activity and which therefore has a sales area.