One of the companies that I give consultancy is manufacturing Module-t prefabricated office containers. My friend Eda Dals's Mixcloud adress.  The construction site offices are delivered disassembled as a set. 10 prefabricated offices of 15 m2, with one door and two windows, all electrically equipped, are shipped in a 40-foot sea container. Our office containers can be combined to create prefabricated modular buildings. It can be assembled or stowed easily.