Implementing the ecological network concept on the local (municipal) level, established in documents with planning and operational nature, is difficult and needs further analysis. The study area considers five municipalities of the Warsaw Functional Area, such as: Jabłonna, Wieliszew, Nieporęt, Radzymin and Wołomin. These are units with high potential for development, increasing urbanization pressure, located in the system of regional and local natural connections. The study analyses: the concepts of ecological network enacted in the spatial development conditions and directions, coverage of the municipalities by local development plans and natural protection, as well as additional conditions that can help to control the spread of residential housing. The outcome has become a framework for evaluating the land management in the studied municipalities in terms of maintaining the ecological connectivity. The research shows that although all municipalities take into account the need to set up the ecological network in their spatial policy, the spatial extent, especially considering local corridors, lead to their marginalization over a priority for development of residential area. Additionally it was stated that the ecological corridors are mainly covered by natural protection or set up in the zones of limited suitability for development which enables to some extent protect them from urbanization pressure.