A future-oriented urban development, as far as legal research is concerned, has two main topics: On one hand it is important to continue with the programmatic opening-up of German urban planning law with regard to the environmental standards in Community law, e.g. the German nature conservation law (a good example for this instrument is the implementation of the SEA-Directive into urban development planning law in such a way that the planning procedure is not impeded, but rather optimized with respect to the weighing-up of environmental concerns on one hand and social and economic concerns on the other hand to stop suburbanisation-processes, reuse inner-urban brownfields in case of urban restructuring at the same time. On the other hand it is also necessary to strengthen the different planning systems of the local communities. Zoning plans, development plans and local landscape plans have to become effective instruments in order to control the environmental impacts of settlements. At the same time, the different environmental requirements and procedures relevant to development planning under the German Federal Building Code (BauGB) have to be focused and adapted to the existing development planning procedure. In order to achieve this aim, the local communities, as the authorities responsible for local development planning, should be responsible for monitoring. They are responsible not only for preparing the land-use and local plans, but also for altering, supplementing or suspending them. In addition to that, both other plans, the zoning plan and the local landscape plan, can have positive effects on controlling the land use: Zoning plans are able to limit the development of settlements to certain areas. On the other hand basic parameters of urban development in the interest of a space-saving development of settlement should be fixed in the zoning plan (e.g. a more specific and detailed type and scale of use). Although local landscape planning systems have no direct intervention possibilities with legal force to control the development of settlement areas in order to achieve a sustainable use of land. The preservation of countryside includes the following strategies: Reactivation of brownfield sites within the urban area, increasing density in existing settlements and mixed use in new building areas and enhancement of vegetation and open space in the urban area. Reactivation of brownfields as an important aim for the future means a significant part of the potential building land within existing urban consists of industrial, military, railway and postal brownfield sites. The development of these sites for settlement (and probably for stopping suburbanisation) is one of the most important strategy for development with economy of space and preservation of the countryside (and also for the reduction of a further dispersion of settlements into the surrounding area, a more efficient use of the existing urban infrastructure and for the reduction of deficits in vegetation in the core urban area). Sustainable land use has not only to do with real-estate-property, but also with the legal mechanisms of urban planning, in which local development plans (the most important plans to achieve an efficient use of land) lay down determinations which give constitutionally enforceable rights regarding the permissibility of land use that cannot be restricted on grounds of planning law in the subsequent procedure for granting planning permission for the specific building projects. Time restrictions on certain uses by the determinations of the local plans would be new and innovative strategies for all local communities in Germany. By the way, it is also important to discuss that planning law should become more flexible in order to take better account of the tendency for more short term land use, to avoid empty buildings that cannot fulfil the residents needs and to advance urban-restructuring-processes.