Local spatial development is affected by various authorities, including environmental authorities. The purpose of this article is to identify the extent to which national parks (on behalf of which the directors of national parks act) affected spatial development in municipalities in Poland in years 2008–2011 based on the arrangements made by them. In addition, an attempt has been made to verify whether in this period of time there were spatial conflicts between the intended space-related maintenance and development of national parks and other, occurring at the local level allocations. The article analyzed the data obtained from thirteen Polish national parks.