Modular offices or portacabin office are modern objects used for the conduct of office works, built out of any number of repetitive modules. They are characterized by relatively large mobility – they are not permanently attached to the surface; thus, they may be transported to another place. What is more, small modular offices, also known as office containers, may be moved almost entirely. In case of larger objects consisting of multiple modules, such relocation involves partial disassembly. On the one hand they are known for their mobility, while on the other hand they ideally substitute brick office buildings, fulfilling all their functions. They constitute perfect premises designated for work in comfortable conditions while maintaining a modern design and relatively low costs.