The unified territorial communities are new structural units in the administrative system of Ukraine. In addition to the problems of regulatory and financial nature, issues of scientific and methodological substantiation of the processes of strategic development of the unified territorial communities on the principles of applying modern methodologies and project management practices are also relevant. The article develops methodological approaches to the formation and management of project portfolios for the implementation of strategies for the sustainable development of unified territorial communities on the principles of applying a value-oriented model of project management. The organizational aspects of the introduction of project management in the united territorial communities have been developed based on the creation of a project management office (committee) for managing strategies. The proposed approaches to the formation of territorial strategies will help to ensure the community's economic development and the effectiveness of utilizing the resources available to the communities.

Research is aimed at the improvement of methods and tools to assess the portfolio of regional economic development projects basing on the application of the system theory, algorithmic modelling, methods of expert evaluation, decomposition and synthesis. A methodical approach is proposed to establish the cause-and-effect relationships between strategic and operational goals, their