A portable building could be modified or purpose built for an extremely wide variety of purposes. Using any available land, they could be used for storage, as a study room, a library, an entertainment center, a store, an office, a guest area, a work station- almost any thing you could think of.  portable buildings  are quite often a lot more affordable than having a building built from the ground up. The cost effectiveness of portable buildings has made them the structure of choice for quite a very wide number of various applications.