Infrastructure provision is one of the most important factors in the socio-economic development of mountain areas. The level of security and the state of the infrastructure have a significant impact on the development of entrepreneurship and the quality of life of people in mountain regions. All states that have mountain regions carry out state policy of the development of mountain territories or use legally established approaches to solving certain problems. The infrastructure of the mountain regions is problematic in many countries. Different tools and mechanisms are used in order to address this issue, but in virtually all countries there is an understanding that improving the infrastructure of these territories is the heart of the socio-economic growth of mountain regions. It is also indisputable that, due to the inequality of economic potential, mountain regions are not able to fully ensure self-sustainability and self-financing, and therefore financially supported by the state. The article analyzes the trends and the state of the infrastructure of mountain areas of Lviv region (Starosambirsky, Skolivsky and Turkivsky). The results of the analysis showed an increase in the provision of the population of these territories with the main infrastructure components. In particular, the level of equipment of the housing stock by the water supply system in the years 2000-2016 has increased: in the Skolivsky district by 28.2%, in Starosambirsky - by 27.8% and Turkivsky - by 13.5%. Significant improvement of the housing stock in providing water supply was held in the rural areas of these regions (by 26.1%, by 32.4% and by 14.7% respectively). At the same time, the current level of infrastructure maintenance of mountain areas in comparison with the average oblast indicator is low. This is due to the fact that after prolonged exploitation (over 50 years), a significant part of the water supply networks and the damaged and outdated energy-intensive equipment require replacement. Almost all sewage treatment facilities had been built by 1990, as of today they require reconstruction, and in some settlements - the construction of new ones. The direction of infrastructure development in mountain areas is to increase the investment attractiveness of these regions. The first step in this should be the implementation of a thorough and adequate program for the development of communal infrastructure in a transboundary region and mountainous areas. Within the framework of this program, it is necessary to resolve the issue of the institutional and financial environment for the infrastructure development of these regions.