4.1 Hierarchy of the Types of Plans, Connections and Conjunctions
The hierarchical connections between different types of plan are described in subsection 1.2.1 In practice, there is significant mutual influence between the plans of different levels. For example, the adopted national spatial plan has strongly impacted the choice of themes of the subsequent county plans. Also, national spatial plan has influenced the content of comprehensive plans.
As a rule, an adopted county plan should be followed while preparing comprehensive plan; however, relatively many amendments to county plans have been proposed with comprehensive plans. In practice, it is also quite common that detailed plans include proposals to amend comprehensive plans. As a conclusion it can be said that Estonia's interactive planning system allows effective reaction to the changing needs and avoids adopted plans' becoming dogmatic. At the same time, its interactive nature has a negative side, which becomes particularly evident on the local level - on many occasions the adopted comprehensive plans are amended with detailed plans too easily.
The situation, especially in the vicinity of larger cities, has been balanced by county plans that deal with the conditions for the functioning of green network. The majority of valid comprehensive plans have been adopted before the preparation of county plans that deal with green networks, and therefore they do not include green network related issues. The detailed plans which indicate new built-up areas on the defined green network areas have been rejected during supervision or court action, because they do not follow the conditions for a functioning green network that have been provided in county plan.