The objective of this paper is to create methodological bases for the sustainable development of underground infrastructure projects with account of certain factors to substantiate elasticity and stability, when conducting technological processes on the underground space development. The analysis of modern methods and tooling for the formation of the urban designing system with the implementation of mixed-use schemes in Ukraine, made it possible to determine that the project financing is a promising form of the capital investment into the most profitable sectors of the state economy or into private business. The analysis of modern methods of planning and designing of urban infrastructure systems has made it possible to substantiate the promising directions for development of the underground space use with application of the innovation model of sustainable development through the implementation of designated programs of high-tech modernization and renovation of the economic complex. Based on the analysis of modern planning methods for infrastructure facilities, an innovation system of the country is proposed, which is being formed by stages in order to create sustainable urban designing with the implementation of mixed-use schemes with a high density in Ukraine, and with subsequent steady functioning of this infrastructure. The practical relevance is in the definition of universal innovation policy, as a combination of basic principles and directions for creating the effective state mechanisms of market relations, as follows: formation of the regulatory and legal framework in the field of innovation activity; ensuring the interaction between science, education, production, financial and credit sphere in the development of innovation activities; technology transfer and financial support. The scheme for the regulatory innovation mode has been substantiated by means of which the economic growth in the country is stimulated within the framework of the appropriate established system of incentives and constraints.