Buildings constructed with room units in steel frame construction can be used in technically different building configurations. They can be disassembled several times and can be reused with different functions at other locations. The lifetime of these buildings is always limited to a specific period. Special requirements regarding structural integrity, building physics, energy efficiency and deconstructability are to be considered in planning as well as construction and operation. This standard covers the basics of planning, construction and deconstruction of buildings constructed with room units in steel frame construction. The further parts of the series of standards VDI 6206, in preperation, cover specific issues, for example on installation and dismounting.