Previous decades saw a new type of housing format emerge in Ukraine – namely, residential complexes (RC). Following ongoing integration with European Union, Ukraine becomes included in a global stage of urbanization process, therefore accepting all positive and negative consequences of this stage. From the point of structure and planning, it means the formation of largest global world cities with their peculiar organization, and the appearance of multifunctional complexes, which constitute a specific structure of «city within a city» and subsequently form megalopolis, an urban system of highest hierarchy, from its base.