The legal assessment of junk properties is usually problematic. Oftentimes, those properties have serious deficits and damages, respectively are dilapidated buildings. Particular legal rules need to be considered in those cases. Planning laws of the state and the federal government at the moment are applied side by side, causing problems to practically implement the rightful law. The assessment of the value of the properties needs to address these questions. Thereby, priority is given to the preservation of the status quo of the properties dealt with.