The planning law classification of land is of particular importance in the determination of the land value. The distinction between the interior and the exterior is difficult in many cases. The development context and the status of a district have a special significance. In addition, land can consist of several value zones, especially if they are large. For land in the outdoor area, the method for determining land value is controversial. The article evaluates the very extensive jurisprudence and literature and summarizes it for real estate appraisal.